Ultrasonic treatment of waste sludge: A review on mechanisms and applications

Critical Reviews in Environmental Science and Technology

Volumn 44, Issue 11, 2014, Pages 1220-1288

  Tyagi, Vinay Kumar ^a   Lo, Shang Lien ^a   Appels, Lise ^b   Dewil, Raf ^b  

^a NATIONAL TAIWAN UNIVERSITY   (Taiwan)

^b UNIVERSITY OF LEUVEN   (Belgium)

Author keywords

physicochemical techniques; ultrasonication; waste sludge

Indexed keywords

ULTRASONIC TESTING;

ECONOMICAL ASSESSMENTS; ENVIRONMENTALLY FRIENDLY PROCESSING; FULL-SCALE IMPLEMENTATION; FUTURE RESEARCH DIRECTIONS; MECHANICAL PRE-TREATMENT; PHYSICOCHEMICAL TECHNIQUES; ULTRA-SONICATION; WASTE SLUDGE;

SLUDGE DIGESTION;

BIOGAS;

POLLUTANT; SLUDGE; SOLUBILIZATION; ULTRASONICS; WASTE TREATMENT;

AEROBIC METABOLISM; ANAEROBIC DIGESTION; ARTICLE; BACTERIAL CELL; DEGRADATION; DISINFECTION; ENZYME ACTIVITY; HYDROLYSIS; INDUSTRIAL SLUDGE; LYSIS; PARTICLE SIZE; RECYCLING; SLUDGE; SLUDGE DEWATERING; SLUDGE TREATMENT; SOLID; SOLUBILIZATION; TURBIDITY; ULTRASOUND;

EID: 84900034707     PISSN: 10643389     EISSN: 15476537     Source Type: Journal    
DOI: 10.1080/10643389.2013.763587     Document Type: Article

References (184)

1. Abramov, V.O., Abramov, O.V., Gekhman, A.E., Kuznetsov, V.M., and Price, G.J. (2006). Ultrasonic intensification of ozone and electrochemical destruction of 1,3-dinitrobenzene and 2,4-dini-trotoluene. Ultrasonics Sonochemistry, 13, 303-307.
2. Adebayo, O.T., Fagbenro, O.A., and Jegede, T. (2004). Evaluation of Cassia fistula meal as a replacement for soybean meal in practical diets of Oreochromis niloticus fingerlings. Aquaculture Nutrition, 10, 99-104.
3. Akin, B., Khanal, S.K., Sung, S., Grewell, D., and van Leeuwen, J. (2006). Ultrasound pre-treatment of waste activated sludge: effect of specific energy input and total solids on sludge disintegration. Water Science and Technology, 6, 35-42.
4. Andreottola, G., and Foladori, P. (2006). A review and assessment of emerging technologies for the minimization of excess sludge production in wastewater treatment plants. Journal of Environmental Science and Health-Part A, 41, 1853-1872.
5. Angerbauer, C., Siebenhofer, M., Mittelbach, M., and Guebitz, G.M. (2008). Conversion of sewage sludge into lipids by Lipomyces starkeyi for biodiesel production. Bioresource Technology, 99, 3051-3056.
6. Appels, L., Baeyens, J., Degrève, J., and Dewil, R. (2008). Principles and potential of the anaerobic digestion of waste-activated sludge. Progress in Energy and Combustion Science, 34, 755-781.
7. Apul, O.G., and Sanin, F.D. (2010). Ultrasonic pretreatment and subsequent anaerobic digestion under different operational conditions, Bioresource Technology, 101, 8984-8992.
8. Aydin, B., and Civelekoglǧu1, G. (2010). Effects of ultrasonic treatment on the waste activated sludge. Journal of Engineering Science and Design, 1, 28-32.
9. Baier, U., and Schmidheiny, P. (1997). Enhanced anaerobic degradation of mechanically disintegrated sludge. Water Science Technology, 36, 137-143.
10. Bandosz, T.J., and Block, K. (2006). Effect of pyrolysis temperature and time on catalytic performance of sewage sludge/industrial sludge-based composite adsorbents. Applied Catalysis B: Environmental, 67, 77-85.
11. Banks, C.J., and Walker, I. (1977). Sonication of activated sludge flocs and the recovery of their bacteria on solid media. Journal of General Microbiology, 98, 363-368.
12. Barber, W.P. (2002). The effects of ultrasound on anaerobic digestion of sludge. In Seventh European Biosolids and Organics Residual Conference. Wakefield, England: Aqua-Enviro.
13. Barber, W.P. (2005). The effects of ultrasound on sludge digestion. Journal of the Charted Institution of Water and Environmental Management, 19, 2-7.
14. Bien, J.B., and Wolny, L. (1997). Changes of some sewage sludge parameters prepared with an ultrasonic field. Water Science and Technology, 36, 101-106.
15. Bordeleau, E.L., and Droste, R.L. (2011). Comprehensive review and compilation of pretreatments for mesophilic and thermophilic anaerobic digestion. Water Science and Technology, 63, 291-296.
16. Bougrier, C., Carrere, H., and Delgenes, J.P. (2005). Solubilization of waste-activated sludge by ultrasonic treatment. Chemical Engineering Journal, 106, 163-169.
17. Bourven, I., Joussein, E., and Guibaud, G. (2011). Characterization of the mineral fraction in extracellular polymeric substances (EPS) from activated sludges extracted by eight different methods. Bioresource Technology, 102, 7124-7130.
18. Braguglia, C.M., Gianico, A., and Mininni, G. (2009). Effect of ultrasound on particle surface charge and filterability during sludge anaerobic digestion. Water Science and Technology, 60, 2025-2033.
19. Braguglia, C.M., Gianico, A., and Mininni, G. (2011). Laboratory-scale ultrasound pre-treated digestion of sludge: Heat and energy balance. Bioresource Technology, 102, 7567-7573.
20. Braguglia, C.M., Gianico, A., and Mininni, G. (2012). Comparison between ozone and ultrasound disintegration on sludge anaerobic digestion. Journal of Environmental Management, 95, S139-S143.
21. Braguglia, C.M., Mininni, G., Tomei, M.C., and Rolle, E. (2006). Effect of feed/inoculum ratio on anaerobic digestion of sonicated sludge. Water Science and Technology, 54, 77-84.
22. Cai, M.L., Liu, J.X., and Wei, Y.S. (2004). Enhanced biohydrogen production from sewage sludge with alkaline pretreatment. Environmental Science and Technology, 38, 3195-3202.
23. Cao, X.Q., Chen, J., Cao, Y.L., Zhu, J.Y., and Hao, X.D. (2006). Experimental study on sludge reduction by ultrasound. Water Science and Technology, 54, 87-93.
24. Cao, X.Q., and Tan, J.J. (2009). Study on sludge reduction of A-A / O process with low C / P ratio. Paper presented at the 3rd IWA-ASPIRE Conference and Exhibition, October 18-22, Taipei (Taiwan).
25. Carrere, H., Dumas, C., Battimelli, A., Batstone, D.J., Delgenes, J.P., Steyer, J.P., and Ferrer, I. (2010). Pretreatment methods to improve sludge anaerobic degradability: A review. Journal of Hazardous Materials, 183, 1-15.
26. Chang, B.V., Wang, T.H., and Yuan, S.Y. (2007). Biodegradation of four phthalate esters in sludge. Chemosphere, 69, 1116-1123.
27. Chang, C.J., Tyagi, V.K., and Lo, S.L. (2011). Effects of microwave and alkali induced pretreatment on sludge solubilization and subsequent aerobic digestion. Bioresource Technology, 102, 7633-7640.
28. Chang, T.C., You, S.J., Damodar, R.A., and Chen, Y.Y. (2011). Ultrasound pre-treatment step for performance enhancement in an aerobic sludge digestion process. Journal of the Taiwan Institute of Chemical Engineers, 42, 801-808.
29. Chen, G.H., Saby, S., Djaer, M., and Mo, H.K. (2001). New approaches to minimize excess sludge in activated sludge systems. Water Science and Technology, 44, 203-208.
30. Chi, Y.Z., Zhang, S.T., and Li, Y.Y. (2009). Treatment and disposal of sewage sludge in China. Journal of Environmental Conservation Engineering, 38, 45-50.
31. Chiu, Y.C., Chang, C.N., Lin, J.G., and Huang, S.J. (1997). Ultrasonic and alkaline pretreatment of sludge before anaerobic digestion. Water Science and Technology, 36, 155-162.
32. Chu, C.P., Lee, D.J., Chang, B.V., and Liao, C.S. (2001). Observations on changes in ultrasonically treated waste activated sludge. Water Research, 35, 1038-1046.
33. Clark, P.B., and Nujjoo, I. (2000). Ultrasonic sludge pretreatment for enhanced sludge digestion. Water Environment Journal, 14, 66-71.
34. Commenges-Bernole, N., and Marguerie, J. (2009). Adsorption of heavy metal sonicated activated sludge. Ultrasonics Sonochemistry, 16, 83-87.
35. Commission of European Communities (1998). Council of Directive 91/271/EEC of 21 March 1991 Concerning Urban Wastewater Treatment amended by the 98/15/EC of 27 February 1998.
36. Comte, S., Guibaud, G., and Baudu, M. (2006). Relations between extraction protocols for activated sludge extracellular polymeric substances (EPS) and EPS complexion properties. Part I. Comparison of the efficiency of eight EPS extraction methods. Enzyme and Microbial Technology, 38, 237-245.
37. Cui, X.F., Talley, J.F., Liu, G., and Larson, S.L. (2011). Effects of primary sludge particulate (PSP) entrapment on ultrasonic (20 kHz) disinfection of Escherichia coli. Water Research, 45, 3300-3308.
38. Deng, J., Feng, X., and Qiu, X. (2009). Extraction of heavy metal from sewage sludge using ultrasound-assisted nitric acid. Chemical Engineering Journal, 152, 177-182.
39. Destaillats, H., Hung, H.M., and Hoffmann, M.R. (2000). Degradation of alkylphenol ethoxylate surfactants in water with ultrasonic irradiation. Environmental Science and Technology, 34, 311-317.
40. Dewil, R., Baeyens, J., and Goutvrind, R. (2006a). The use of ultrasonics in the treatment of waste activated sludge. Chinese Journal of Chemical Engineering, 14, 105-113.
41. Dewil, R., Baeyens, J., and Goutvrind, R. (2006b). Ultrasonic treatment of waste activated sludge. Environmental Progress, 25, 121-128.
42. Dhar, B.P., Nakhla, G., and Ray, M.B. (2012). Techno-economic evaluation of ultrasound and thermal pretreatments for enhanced anaerobic digestion of municipal waste activated sludge. Waste Management, 32, 542-549.
43. Domínguez, L., Rodríguez, M., and Prats, D. (2010). Effect of different extraction methods on bound EPS from MBR sludges. Part I: Influence of extraction methods over three-dimensional EEM fluorescence spectroscopy fingerprint. Desalination, 261, 19-26.
44. Donoso-Bravo, A., Pérez-Elvira, S.I., and Polanco, F. (2010). Application of simplified models for anaerobic biodegradability tests. Evaluation of pre-treatment processes. Chemical Engineering Journal, 160, 607-614.
45. El-Hadj, T.B., Dosta, J., Marquez-Serrano, R., and Mata-Alvarez, J. (2007). Effect of ultrasound pretreatment in mesophilic and thermophilic anaerobic digestion with emphasis on naphthalene and pyrene removal. Water Research, 41, 87-94.
46. Elbeshbishy, E., Hafez, H., and Nakhla, G. (2010). Enhancement of bio-hydrogen producing using ultrasonication. International Journal of Hydrogen Energy, 35, 6184-6193.
47. Elliott, A., and Mahmood, T. (2007). Pretreatment technologies for advancing digestion of pulp and paper bio-treatment residues. Water Research, 41, 4273-4286.
48. Erden, G., Demir, O., and Filibeli, A. (2010). Disintegration of biological sludge: Effect of ozone oxidation and ultrasonic treatment on aerobic digestibility. Bioresource Technology, 101, 8093-8098.
49. Eskicioglu, C., Prorot, A., Marin, J., Kennedy, K.J., and Droste, R.L. (2008). Synergetic Pretreatment of Sewage Sludge by Microwave Irradiation in Presence of H 2O 2 for Enhanced Anaerobic Digestion. Water Research 4674-4682.
50. Eskicioglu, C., Terzian, N., Kennedy, K.J., Droste, R.L., and Hamoda, M. (2007). Athermal MW effects for enhancing digestibility of waste activated sludge. Water Research, 41, 2457-2466.
51. Feng, X., Deng, J., Lei, H., Bai, T., Fan, Q., and Li, Z. (2009). Dewaterability of waste activated sludge with ultrasound conditioning. Bioresource Technology, 100, 1074-1081.
52. Foladoria, P., Laurab, B., Giannia, A., and Giulianoa, Z. (2007). Effects of sonication on bacteria viability in wastewater treatment plants evaluated by flow cytometry: fecal indicators, wastewater and activated sludge. Water Research, 41, 235-243.
53. Fountoulakis, M.S., Stamalelatou, K., Batstone, D.J., and Lyberatos, G. (2006). Simulation of DEHP biodegradation and sorption during the anaerobic digestion of secondary sludge. Water Science and Technology, 54, 119-126.
54. Frølund, B., Griebe. T., and Nielsen, P.H. (1995). Enzymatic activity in the activated sludge floc matrix. Applied Microbiology and Biotechnology, 43, 755-761.
55. Frølund, B., Palmgren, R., Keinding, K., and Nielsen, P.H. (1996). Extraction of extracellular polymers from activated sludge using a cation exchange resin, Water Research, 30, 1749-1758.
56. García-Valcárcel, A.I., and Tadeo, J.L. (2009). A combination of ultrasonic assisted extraction with LC-MS/MS for the determination of organophosphorus pesticides in sludge. Analytica Chimica Acta, 641, 117-123.
57. Gatidou, G., Thomaidis, N.S., Stasinakis, A.S., and Lekkas, T.D. (2007). Simultaneous determination of the endocrine disrupting compounds nonylphenol, nonylphenol ethoxylates, triclosan and bisphenol A in wastewater and sewage sludge by gas chromatography-mass spectrometry. Journal of Chromatography A, 1138, 32-41.
58. Gogate, P.R. (2002). Cavitation: an auxiliary technique in wastewater treatment schemes. Advances in Environmental Research, 6, 335-358.
59. Gogate, P.R., and Kabadi, A.M. (2009). A review of applications of cavitation in biochemical engineering/biotechnology. Biochemical Engineering Journal, 44, 60-72
60. Gonze, E., Pillot, S., Valette, E., Gonthier, Y., and Bernis, A. (2003). Ultrasonic treatment of an aerobic activated sludge in a batch reactor. Chemical Engineering and Processing: Process Intensification, 42, 965-975.
61. Graczyk, T.K., Kacprzak, M., Neczaj, E., Tamang, L., Graczyk, H., Lucy, F.E., and Girouard, A.S. (2008). Occurrence of Cryptosporidium and Giardia in sewage sludge and solid waste landfill leachate and quantitative comparative analysis of sanitization treatments on pathogen inactivation. Environmental Research, 106, 27-33
62. Gronroos, A., Kyllonen, H., Korpijarvi, K., Pirkonen, P., Paavola, T., Jokela, J., and Rintala, J. (2005). Ultrasound assisted method to increase soluble chemical oxygen demand (SCOD) of sewage sludge for digestion. Ultrasonics Sonochemistry, 12, 115-120.
63. Guo, W.Q., Ren, N.Q., Chen, Z.B., Liu, B.F., Wang, X.J., and Xiang, W.S. (2008). Simultaneous bio-hydrogen production and starch wastewater treatment in an acidogenic expanded granular sludge bed reactor by mixed culture for long-term operation. International Journal of Hydrogen Energy, 33, 7397-7404.
64. Guo, Y., Kim, S., Sung, S., and Lee, P. (2010). Effect of ultrasonic treatment of digestion sludge on bio-hydrogen production from sucrose by anaerobic fermentation. International Journal of Hydrogen Energy, 35, 3450-3455.
65. Harrison, S.T. L. (1991). Bacterial cell disruption: a key unit operation in the recovery of intracellular products. Biotechnology Advances, 9, 217-240.
66. He, J., Wan, T., Zhang, G., and Yang, J. (2011). Ultrasonic reduction of excess sludge from activated sludge system: Energy efficiency improvement via operation optimization. Ultrasonics Sonochemistry, 18, 99-103.
67. Hernando, M.R., Labanda, J., and Llorens, J. (2010). Effect of ultrasonic waves on the rheological features of secondary sludge. Biochemical Engineering Journal, 52, 131-136.
68. Hirooka, K., Asano, R., Yokoyama, A., Okazaki, M., Sakamoto, A., and Nakai. Y. (2009). Reduction in excess sludge production in a dairy wastewater treatment plant via nozzle-cavitation treatment: Case study of an on-farm wastewater treatment plant. Bioresource Technology, 100, 3161-3166.
69. Hoch, M. (2001). Organotin compounds in the environment: an overview. Applied Geochemistry, 16, 719-743.
70. Hogan, F., Mormede, S., Clark, P.B., and Crane, M. (2004). Ultrasonic sludge treatment for enhanced anaerobic digestion. Water Science and Technology, 50, 25-32.
71. Hristozov, D., Domini, A.C., Kmetov, V., Stefanova, V., Georgieva, D., and Canals, A. (2004). Direct ultrasound-assisted extraction of heavy metals from sewage sludge samples for ICP-OES analysis. Analytical Chimica Acta, 516, 187-196.
72. Hua, I., and Hoffmann, M.R. (1997). Optimization of ultrasonic irradiation as an advanced oxidation technology. Environmental Science and Technology, 31, 2237-2243.
73. Hua, I., and Thompson, J.E. (2000). Inactivation of Escherichia coli by sonication at discrete ultrasonic frequencies. Water Research, 34, 3888-3893.
74. Huan, L., Yiying, J., Mahar, R.B., Zhiyu, W., and Yongfeng, N. (2009). Effects of ultrasonic disintegration on sludge microbial activity and dewaterability. Journal of Hazardous Materials, 161, 1421-1426.
75. Hwang, J., Zhang, L., Seo, S., Lee, Y.W., and Jhang, D. (2008). Protein recovery from excess sludge for its use as animal feed. Bioresource Technology, 99, 8949-8954.
76. Jean, D.S., Chang, B.V., Liao, G.S., Tsou, G.W., and Lee, D.J. (2000). Reduction of microbial density level in sewage sludge through pH adjustment and ultrasonic treatment. Water Science and Technology, 42, 97-102.
77. Jiang, J., Yang, S., Chen, M., and Zhang, Q. (2009). Disintegration of sewage sludge with bi-frequency ultrasonic treatment. Water Science and Technology, 60, 1445-1453.
78. Jin, Y., Li, H., Mahar, R.B., Wang, Z., and Nie, Y. (2009). Combined alkaline and ultrasonic pretreatment of sludge before aerobic digestion. Journal of Environmental Science, 21, 279-284.
79. Jorand, F., Zartarian, F., Thomas, F., Block, J.C., Bottero, J.Y., Villemin, G., Urbain, V., and Manem, J. (1995). Chemical and structural (2D) linkage between bacteria within activated sludge flocs. Water Research, 29, 1639-1647.
80. Kazi, T.G., Jamali, M.K., Siddiqui, A., Kazi, G.H., Arain, M.B., and Affidi, H.I. (2006). An ultrasonic assisted extraction method to release heavy metals from untreated sewage sludge samples. Chemosphere, 63, 411-420.
81. Kesari, K.K., Kumar, S., Verma, H.N., and Behari, J. (2011). Influence of ultrasonic treatment in sewage sludge. Hydrology: Current Research, 2, 1-7.
82. Khanal, S.K., Grewell, D., Sung, S., and Leeuwen, J.V. (2007). Ultrasound applications in wastewater sludge pretreatment: a review. Critical Reviews in Environmental Science and Technology, 37, 277-313.
83. Khanal, S.K., Isik, H., Sung, S., and van Leeuwen, J. (2006a). Effects of ultrasound pretreatment on aerobic digestibility of thickened waste activated sludge. Paper presented at the 7th Specialized Conference on Small Water and Wastewater Systems, March 7-10, Mexico City, Mexico.
84. Khanal, S.K., Isik, H., Sung, S., and van Leeuwen, J. (2006b). Ultrasonic conditioning of waste activated sludge for enhanced aerobic digestion. Paper presented at the IWA Specialized Conference-Sustainable Sludge Management: State of the Art, Challenges and Perspectives, May 29-31, Moscow, Russia.
85. Khanal, S.K., Isik, H., Sung, S., and van Leeuwen, J. (2006c). Ultrasound pretreatment of waste activated sludge: evaluation of sludge disintegration and aerobic digestibility. Paper presented at the IWA World Water Congress and Exhibition, September 10-14, Beijing, China.
86. Kidak, R., Wilhelm, A.M., and Delmas, H. (2009). Effect of process parameters on the energy requirement in ultrasonical treatment of waste sludge. Chemical Engineering Processing: Process Intensification, 48, 1346-1352.
87. Kim, D.H., Jeong, E., Oh, S.E., and Shin, H.S. (2010). Combined (alkaline D ultrasonic) pretreatment effect on sewage sludge disintegration. Water Research, 44, 3093-3100.
88. Kim, D.J., and Lee, J. (2012). Ultrasonic sludge disintegration for enhanced methane production in anaerobic digestion: effects of sludge hydrolysis efficiency and hydraulic retention time. Bioprocess Biosystem Engineering, 35, 289-296.
89. Kim, J., Kaurich, T.A., Sylvester, P., and Martin, A.G. (2006). Enhanced selective leaching of chromium from radioactive sludges. Separation Science and Technology, 41, 179-196.
90. King, R.O., and Forster, C.F. (1990). Effects of sonication on activated sludge. Enzyme and Microbial Technology, 12, 109-115.
91. Koksoy, G.T., and Sanin, F.D. (2010). Effect of digester F/M ratio on gas production and sludge minimization of ultrasonically treated sludge. Water Science and Technology, 62, 1510-1517.
92. Kruger, R., and Hogan, F. (2005). Using sonix to enhance anaerobic digestion: an overview from different trials and installations. Paper presented at the WEF Proceedings of the Residuals and Biosolids Conference, Covington, KY.
93. Kuttruff, H. (1991). Ultrasonics fundamentals and applications. Essex, England: Elsevier Science.
94. Kwiatkowska, B., Bennett, J., Akunna, J., Walker, G.M., and Bremner, D.H. (2011). Stimulation of bioprocesses by ultrasound. Biotechnology Advances, 29, 768-780
95. Lafitte-Trouque, S., and Forster, C.F. (2002). The use of ultrasound and γ-irradiation as pre-treatments for the anaerobic digestion of waste activated sludge at mesophilic and thermophilic temperatures. Bioresource Technology, 84, 113-118.
96. Laurent, J., Casellas, M., and Dagot, C. (2009). Heavy metals uptake by sonicated activated sludge: relation with floc surface properties. Journal of Hazardous Materials, 162, 652-660.
97. Leonelli, C., and Mason, T.J. (2010). Microwave and ultrasonic processing: Now a realistic option for industry. Chemical Engineering and Processing: Process Intensification, 49, 885-900.
98. Li, C., Xie, F., Ma, Y., Cai, T., Li, H., Huang, Z., and Yuan, G. (2010). Multiple heavy metals extraction and recovery from hazardous electroplating sludge waste via ultrasonically enhanced two-stage acid leaching. Journal of Hazardous Materials, 178, 823-833.
99. Lin, J.G., Chang, C.N., and Chang, S.C. (1997). Enhancement of anaerobic digestion of waste activated sludge by alkaline solubilization. Bioresource Technology, 62, 85-90.
100. Lin, L.D., and Wu, J.Y. (2002). Enhancement of shikonin production in single- and two-phase suspension cultures of Lithospermum erythrorhizon cells using low-energy ultrasound. Biotechnology and Bioengineering, 78, 81-88.
101. Liu, C., Xiao, B., Dauta, A., Peng, G., Liu, S., and Hu, Z. (2009). Effect of low power ultrasonic radiation on anaerobic biodegradability of sewage sludge. Bioresource Technology, 100, 6217-6222.
102. Liu, X., Liu, H., Chen, J., Du, G., and Chen, J. (2008). Enhancement of solubilization and acidification of waste activated sludge by pretreatment. Waste Management, 28, 2614-2622.
103. Ma, Y.S., and Lin, J.G. (2011). Sono-alkalization pretreatment of sewage sludge containing phthalate acid esters. Journal of Environmental Science and Health: Part A, 46, 980-988.
104. Mahmood, T., and Elliott, A. (2006). A review of secondary sludge reduction technologies for the pulp and paper industry. Water Research, 40, 2093-2112.
105. Mao, T., Hong, S.Y., Show, K.Y., Tay, J.H., and Lee, D.J. (2004). A comparison of ultrasound treatment on primary and secondary sludge. Water Science and Technology, 50, 91-97.
106. Mark, G., Tauber, A., Laupert, R., Schuchmann, H.P., Schulz, D., Mues, A., and von Sonntag, C. (1998). OH-radical formation by ultrasound in aqueous solution-Part II. Terephthalate and Fricke dosimetry and the influence of various conditions on the sonolytic yield, Ultrasonic Sonochemistry, 5, 41-52.
107. Marttinen, S.K., Kettunen, R.H., and Rintala, J.A. (2003). Occurrence and removal of organic pollutants in sewages and landfill leachates. Science of The Total Environment, 301, 1-12.
108. Mason, T. (1991). Practical sonochemistry: User's guide to applications in chemistry and chemical engineering. Chichester, England: Ellis Horword.
109. Mason, T. (2007). Sonochemistry and the environment-Providing a green link between chemistry, physics and engineering, Ultrasonics Sonochemistry, 14, 476-483.
110. Mason, T.J., Joyce, E., Phull, S.S., and Lorimer, J.P. (2003). Potential uses of ultrasound in the biological decontamination of water. Ultrasonics Sonochemistry, 10, 319-324.
111. Mignotte, B., Maul, A., and Schwartzbrod, L. (1999). Comparative study of techniques used to recover viruses from residual urban sludge. Journal of Virological Methods, 78, 71-80.
112. Mohammadi, A.R., Mehrdadi, N., Bidhendi, G.N., and Torabian, A. (2011). Excess sludge reduction using ultrasonic waves in biological wastewater treatment. Desalination, 275, 67-73.
113. Mohapatra, D.P., Brara, S.K., Tyagi, R.D., and Surampalli, R.Y. (2011). Parameter optimization of ferro-sonication pre-treatment process for degradation of bisphenol A and biodegradation from wastewater sludge using response surface model. Journal of Hazardous Materials, 189, 100-107.
114. Monique, R., Elisabeth, G.N., Etienne, P., and Dominique, L. (2008). A high yield multi-method extraction protocol for protein quantification in activated sludge. Bioresource Technology, 99, 7464-7471.
115. Muller, C., Abu-Orf, M., Blumenschein, C., and Novak, J. (2005). The impact of ultrasound energy on mesophilic anaerobic digestion. Paper presented at the WEF Residuals and Biosolids Management Conference, Covington, KY.
116. Na, S., Kim, Y.U., and Khim, J. (2007). Physiochemical properties of digested sewage sludge with ultrasonic treatment. Ultrasonics Sonochemistry, 14, 281-285.
117. Nabarlatz, D., Vondrysova, J., Janicek, P., Stüber, F., Font, J., and Fortuny, A. (2010). Hydrolytic enzymes in activated sludge: extraction of protease and lipase by stirring and ultrasonication. Ultrasonics Sonochemistry, 17, 923-31.
118. Neis, U. (2000). Ultrasound in water, wastewater and sludge treatment. Sewage Treatment, 21, 36-39.
119. Neis, U., and Tiehm, A. (1999). Ultrasound in wastewater and sludge treatment. Technical University of Hamburg-Harburg Reports on Sanitary Engineering, Ultrasound in Environmental Engineering, 25, 39-61.
120. Nickel, K. (2002). Ultrasonic disintegration of biosolids: benefits, consequences and new strategies. TU Hamburg Reports on Sanitary Engineering, 35, 189-200.
121. Nickel, K., and Neis, U. (2007). Ultrasonic disintegration of biosolids for improved biodegradation. Ultrasonics Sonochemistry, 14, 450-455
122. Nies, U., Nickel, K., and Tiehm, A. (2000). Enhancement of anaerobic digestion by ultrasonic disintegration. Water Science and Technology, 42, 73-80.
123. Onyeche, T.I., Schlafer, O., Bormann, H., Schroder, C., and Sievers, M. (2002). Ultrasonic cell disruption of stabilised sludge with subsequent anaerobic digestion. Ultrasonics, 40, 31-35.
124. Perez-Cid, B., Lavilla, I., and Bendicho, C. (1998). Speeding up of a three-stage sequential extraction method for metal speciation using focused ultrasound. Analytical Chimica Acta, 360, 35-41.
125. Pérez-Elvira, S.I., Ferreira, L.C., Donoso-Bravo, A., Fernandez-Polanco, M., and Fernandez-Polanco, F. (2010). Full-stream and part-stream ultrasound treatment effect on sludge anaerobic digestion. Water Science and Technology, 61, 1363-1372.
126. Pétrier, C., and Francony, A. (1997). Incidence of wave-frequency on the reaction rates during ultrasonic wastewater treatment. Water Science and Technology, 35, 175-180
127. Pham, T.T.H., Brar, S.K., Tyagi, R.D., and Surampalli, R.Y. (2009). Ultrasonication of wastewater sludge-Consequences on biodegradability and flow-ability. Journal of Hazardous Material, 163, 891-898.
128. Pham, T.T.H., Brar, S.K., Tyagi, R.D., and Surampalli, R.Y. (2010). Influence of ultrasonication and Fenton oxidation pre-treatment on rheological characteristics of wastewater sludge, Ultrasonics Sonochemistry, 17, 38-45.
129. Pham, T.T.H., Tyagi, R.D., Brar, S.K., and Surampalli, R.Y. (2011). Effect of ultrasonication and Fenton oxidation on biodegradation of bis (2-ethylhexyl) phthalate (DEHP) in wastewater sludge. Chemosphere, 82, 923-928.
130. Pilli, S., Bhunia. P., Yan, S., LeBlanc, R.J., R.D.D. Tyagi, R.D., and Surampalli, R.Y. (2011). Ultrasonic pretreatment of sludge: A review. Ultrasonics Sonochemistry, 18, 1-18.
131. Portenlanger, G. (1999). Mechanical and radical effects of ultrasound. Ultrasound in Environmental Engineering, TU Hamburg-Harburg Reports on Sanitary Engineering, 25, 39-151.
132. Qian, Z., Stoodley, P., and Pitt, W.G. (1996). Effect of low-intensity ultrasound upon biofilm structure from confocal scanning laser microscopy observation. Biomaterials, 17, 1975-1980.
133. Quarmby, J., Scott, J.R., Mason, A.K., Davies, G., and Parsons, S.A. (1999). The application of ultrasound as a pre-treatment for anaerobic digestion, Environmental Technology, 20, 1155-1161.
134. Rai, C.L., and Rao, P.G. (2009). Influence of sludge disintegration by high pressure homogenizer on microbial growth in sewage sludge: An approach for excess sludge reduction. Clean Technologies and Environmental Policy, 11, 437-446.
135. Rokhina, E.V., Lens, P., and Virkutyte, J. (2009). Low-frequency ultrasound in biotechnology: State of the art. Trends in Biotechnology, 27, 298-306.
136. Rudel, H. (2003). Case study: bioavailability of tin and tin compounds. Ecotoxicology and Environmental Safety, 56, 180-189.
137. Rulkens, W. (2008). Sewage sludge as a biomass resource for the production of energy: overview and assessment of the various options. Energy and Fuels, 22, 9-15.
138. Saha, M., Eskicioglu, C., and Marin, J. (2011). Microwave, ultrasonic and chemo-mechanical pretreatments for enhancing methane potential of pulp mill wastewater treatment sludge. Bioresource Technology, 102, 7815-7826.
139. Salsabil, M.R., Laurent, J., Casellas, M., and Dagot, C. (2010). Technoeconomic evaluation of thermal treatment, ozonation and sonication for the reduction of wastewater biomass volume before aerobic or anaerobic digestion. Journal of Hazardous Materials, 174, 323-333.
140. Salsabil, M.R., Prorot, A., Casellas, M., and Dagot, C. (2009). Pretreatment of activated sludge: effect of sonication on aerobic and anaerobic digestibility. Chemical Engineering Journal, 148, 327-335.
141. Sánchez-Brunete, C., Miguel, E., and Tadeo, J.L. (2008). Determination of organochlorine pesticides in sewage sludge by matrix solid-phase dispersion and gas chromatography-mass spectrometry. Talanta, 74, 1211-1217.
142. Sandino, J., Santha, H., Rogowski, S., Anderson, W., Sung, S., and Isik, F. (2005). Applicability of ultrasound pre-conditioning of WAS to reduce foaming potential in mesophilic digesters. Paper presented at the Joint Residuals and Biosolids Management Conference, April 17-19, Nashville, TN.
143. Sanin, F.D., and Vesilind, P.A. (1996). Synthetic sludge: A physical/chemical model in understanding bioflocculation. Water Environment Research, 68, 927-933.
144. Santos, J.L., Aparicio, I., and Alonso, E. (2007). A new method for the routine analysis of LAS and PAH in sewage sludge by simultaneous sonication-assisted extraction prior to liquid chromatographic determination. Analytical Chimica Acta, 605, 102-109.
145. Sarabia, E.R.F., Gallego-Juarez, J.A., Rodrguez-Corral, G., Elvira-Segura, L., and Gonzalez-Gomez, I. (2000). Application of high-power ultrasound to enhance liquid/solid particle separation processes. Ultrasonics, 38, 642-646.
146. Schlafer, O., Sievers, M., Klotzbucher, H., and Onyeche, T. (2000). Improvement of biological activity by low energy ultrasound assisted bioreactors. Ultrasonics, 38, 711-716.
147. Shan, G., Jin, W., Lam, E.K.H., and Xing, X. (2008). Purification of total DNA extracted from activated sludge. Journal of Environmental Science, 20, 80-87.
148. Shier, W.T., and Purwono, S.K. (1994). Extraction of single-cell protein from activated sewage sludge: thermal solubilization of protein. Bioresource Technology, 49, 157-162.
149. Show, K.Y., Mao, T., and Lee, D.J. (2007). Optimization of sludge disruption by sonication. Water Research, 41, 4741-4747.
150. Show, K.Y., Tay. J.H., and Hung. Y.T. (2010). Ultrasound pretreatment of sludge for anaerobic digestion. In: Wang, L.K., Tay, J.H., Tay, S.T.L., and Hung, Y.T. (Eds.), Handbook of environmental engineering, Vol. 11: Environmental Bioengineering, (pp. 53-73). Springer, Humana, Press: USA.
151. Song, S., Xia, M., He, Z., Ying, H., Bosheng, L., and Chen, J. (2007). Degradation of p-nitrotoluene in aqueous solution by ozonation combined with sonolysis. Journal of Hazardous Materials, 144, 532-537.
152. Suslick, K.S., Hammerton, D.A., and Cline, R.E. Jr. (1986). The sonochemical hot spot. Journal of American Chemical Society, 108, 5641-5642.
153. Tian, Y., Zuo, W., Ren, Z., and Chen, D. (2011). Estimation of a novel method to produce bio-oil from sewage sludge by microwave pyrolysis with the consideration of efficiency and safety. Bioresource Technol o gy, 102, 2053-2061.
154. Tiehm, A. (1999). Combination of ultrasound and biodegradation: enhanced bioavailability of polycyclic aromatic hydrocarbons. In Ultrasound in Environmental Engineering, TU Hamburg-Harburg Reports on Sanitary Engineering, 25, 167-180.
155. Tiehm, A., Nickel, K., and Neis, U. (1997). The use of ultrasound to accelerate the anaerobic digestion of sewage sludge. Water Science and Technology, 36, 121-128.
156. Tiehm, A., Nickel, K., Zellhorn, M., and Neis, U. (2001). Ultrasonic WAS disintegration for improving anaerobic stabilization. Water Research, 35, 2003-2009.
157. Toerien, D.F., and Hattingh, W.H.J. (1969). Review paper anaerobic digestion. Part I. The microbiology of anaerobic digestion. Water Research, 3, 385-416.
158. Trably, E., Patureau, D., and Delgenes, J.P. (2003). Enhancement of polycyclic aromatic hydrocarbons removal during anaerobic treatment of urban sludge. Water Science and Technology, 48, 53-60.
159. Tyagi, V.K., and Lo, S.L. (2011). Application of physico-chemical pretreatment methods to enhance the sludge disintegration and subsequent anaerobic digestion: An up to date review. Reviews in Environmental Science and Bio/Technology, 10, 215-242.
160. Tyagi, V.K., and Lo, S.L. (2012). Enhancement in mesophilic aerobic digestion of waste activated sludge by chemically assisted thermal pretreatment method. Bioresource Technology, 119, 105-113.
161. Villar, M., Fernández-Torres, R., Callejón, M., Villar, P., and Jiménez, J.C. (2008). Application of probe sonication extraction for the determination of linear alkylbenzene sulfonates from sewage sludge. Comparison with other extraction methods. Microchemical Journal, 90, 164-170.
162. Wang, F., Lu, S., and Ji, M. (2006). Components of released liquid from ultrasonic waste activated sludge disintegration. Ultrasonics Sonochemistry, 13, 334-338.
163. Wang, F., Wang, Y., and Ji, M. (2005). Mechanisms and kinetics models for ultrasonic activated sludge disintegration. Journal of Hazardous Materials, 123, 145-150.
164. Wang, Q., Kuninobo, M., Kakimoto, K., Ogawa, H.I., and Kato, Y. (1999). Upgrading of anaerobic digestion of WAS by ultrasonic pretreatment. Bioresource Technology, 68, 309-313.
165. Wang, X.X., Qiu. Z.F., Lu. S.G., and Ying. W.C. (2010). Characteristics of organic, nitrogen and phosphorus species released from ultrasonic treatment of waste activated sludge. Journal of Hazardous Materials, 176, 35-40.
166. Weinbauer, M.G., and Rassoulzadegan, F. (2004). Are viruses driving microbial diversification and diversity? Environmental Microbiology, 6, 1-11.
167. Woszczyk-Cierzynńska, K., Bienń, J., and Kacprzak, M. (2007). The effect of sewage sludge sonification on sanitary factors and pathogenic fungi. Environmental Protection Engineering, 33, 241-248.
168. Wu, Q., and Liu, W.T. (2009). Determination of virus abundance, diversity and distribution in a municipal wastewater treatment plant. Water Research, 43, 1101-1109.
169. Wunsch, B., Heine, W., and Neis, U. (2002). Combating bulking sludge with ultrasound. In Ultrasound in environmental engineering II. Reports on sanitary engineering 35 (pp. 201-212). Hamburg, Germany: Technical University Hamburg-Harburg, GFEU-Verlag, Germany.
170. Xie, B., Liu, H., and Yan, Y. (2009). Improvement of the activity of anaerobic sludge by low-intensity ultrasound. Journal of Environmental Management, 90, 260-264.
171. Xie, R., Xing, Y., Ghani, Y.A., Ooi, K., and Ng, S. (2007). Full-scale demonstration of an ultrasonic disintegration technology in enhancing anaerobic digestion of mixed primary and thickened secondary sewage sludge. Journal of Environmental Engineering Science, 6, 533-541.
172. Xu, G., Chen, S., Shi, J., Wang, S., and Zhu, G. (2010). Combination treatment of ultrasound and ozone for improving solubilization and anaerobic biodegradability of waste activated sludge. Journal of Hazardous Materials, 180, 340-346.
173. Xu, H., He, P., Yu, G., and Shao, L. (2011). Effect of ultrasonic pretreatment on anaerobic digestion and its sludge dewaterability. Journal of Environmental Science, 23, 1472-1478.
174. Xu, N., Wang, W., Han, P., and Lu, X. (2009). Effects of ultrasound on oily sludge deoiling. Journal of Hazardous Materials, 171, 914-917.
175. Yim, B., Nagata, Y., and Maeda, Y. (2002). Sonolytic degradation of phthalic acid esters in aqueous solutions. Acceleration of hydrolysis by sonochemical action. The Journal of Physical Chemistry A, 106, 104-107.
176. Yin, X., Han, P., Lu, X., and Wang, Y. (2004). A review on the dewaterability of bio-sludge and ultrasound pretreatment. Ultrasonics Sonochemistry, 11, 337-348.
177. Young, F.R. (1989). Cavitation. Maidenhead, England: McGraw-Hill.
178. Yu, G.H., He, P.J., Shao, L.M., and Zhu, Y.S. (2008). Extracellular proteins, polysaccharides and enzymes impact on sludge aerobic digestion after ultrasound pretreatment. Water Resreach, 42, 1925-1934.
179. Yu, G.H., He, P.J., Shao, L.M., and Zhu, Y.S. (2009). Enzyme extraction by ultrasound from sludge flocs. Journal of Environmental Science, 21, 204-210.
180. Zhang, G., He, J., Zhang, P., and Zhang, J. (2009). Ultrasonic reduction of excess sludge from activated sludge system II: Urban sewage treatment. Journal of Hazardous Materials, 164, 1105-1109.
181. Zhang, G., Zhang, P., Gao, J., and Chen, Y. (2008a). Using acoustic cavitation to improve the bio-activity of activated sludge. Bioresource Technology, 99, 1497-1502.
182. Zhang, G., Zhang, P., Yang, J., and Liu, H. (2008b). Energy-efficient sludge sonication: Power and sludge characteristics. Bioresource Technology, 99, 9029-9031.
183. Zhu, X., Xie, X., Liao, Q., Wang, Y., and Lee, D. (2011). Enhanced hydrogen production by Rhodopseudomonas palustris CQK 01 with ultra-sonication pretreatment in batch culture. Bioresource Technology, 102, 8696-8699.
184. Zuliani, T., Lespes, G., Milacic, R., and Scancar, J. (2010). Development of the extraction method for the simultaneous determination of butyl-, phenyl- and octyltin compounds in sewage sludge. Talanta, 80, 1945-1951.