A critical review on sustainable biochar system through gasification: Energy and environmental applications

Bioresource Technology

Volumn 246, Issue , 2017, Pages 242-253

  You, Siming ^a   Ok, Yong Sik ^b,e   Chen, Season S ^c   Tsang, Daniel C W ^c   Kwon, Eilhann E ^d   Lee, Jechan ^d   Wang, Chi Hwa ^a  

^a NATIONAL UNIVERSITY OF SINGAPORE   (Singapore)

^b Kangwon National University   (South Korea)

^c HONG KONG POLYTECHNIC UNIVERSITY   (Hong Kong)

^d Sejong University   (South Korea)

^e Korea University   (South Korea)

Author keywords

Biochar; Black carbon; Life cycle assessment; Pyrolysis; Soil amendment

Indexed keywords

GASIFICATION; PYROLYSIS; SOILS; SUSTAINABLE DEVELOPMENT; SYNTHESIS GAS;

BIO CHARS; BLACK CARBON; ENVIRONMENTAL APPLICATIONS; ENVIRONMENTAL IMPLICATIONS; GASIFICATION PRODUCTS; LIFE CYCLE ASSESSMENT (LCA); PHYSICOCHEMICAL PROPERTY; SOIL AMENDMENT;

LIFE CYCLE;

ACTIVATED CARBON; ADSORBENT; BIOCHAR; BIODIESEL; BLACK CARBON; FUEL; TAR; UNCLASSIFIED DRUG; CHARCOAL;

BIOMASS; BLACK CARBON; CHARCOAL; ENVIRONMENTAL IMPACT; LIFE CYCLE ANALYSIS; PHYSICOCHEMICAL PROPERTY; PYROLYSIS; SOIL AMENDMENT; SUSTAINABILITY;

ANAEROBIC DIGESTION; BIOFUEL PRODUCTION; CATALYST; CHEMICAL ANALYSIS; ECONOMIC ASPECT; ELECTROCHEMICAL ANALYSIS; ENERGY YIELD; ENVIRONMENTAL IMPACT; GASIFICATION; LIFE CYCLE ASSESSMENT; PHYSICAL CHEMISTRY; PRIORITY JOURNAL; PYROLYSIS; REVIEW; SOIL AMENDMENT; WASTE COMPONENT REMOVAL; BIOMASS; SOIL;

BIOMASS; CHARCOAL; SOIL;

EID: 85022040543     PISSN: 09608524     EISSN: 18732976     Source Type: Journal    
DOI: 10.1016/j.biortech.2017.06.177     Document Type: Review

References (112)

1. Abdulrazzaq, H., Jol, H., Husni, A., Abu-Bakr, R., Characterization and stabilisation of biochar obtained from empty fruit bunch, wood, and rice husk. BioResources 9:2 (2014), 2888–2898.
2. Abioye, A.M., Ani, F.N., Recent development in the production of activated carbon electrodes from agricultural waste biomass for supercapacitors: a review. Renew. Sustain. Energy Rev. 52 (2015), 1282–1293.
3. Ahn, S.Y., Eom, S.Y., Rhie, Y.H., Sung, Y.M., Moon, C.E., Choi, G.M., Kim, D.J., Application of refuse fuels in a direct carbon fuel cell system. Energy 51 (2013), 447–456.
4. Ahn, S.Y., Eom, S.Y., Rhie, Y.H., Sung, Y.M., Moon, C.E., Choi, G.M., Kim, D.J., Utilization of wood biomass char in a direct carbon fuel cell (DCFC) system. Appl. Energy 105 (2013), 207–216.
5. Alexander, B., Mitchell, R., Gür, T., Experimental and modeling study of biomass conversion in a solid carbon fuel cell. J. Electrochem. Soc. 159:3 (2012), B347–B354.
6. Angın, D., Altintig, E., Köse, T.E., Influence of process parameters on the surface and chemical properties of activated carbon obtained from biochar by chemical activation. Bioresour. Technol. 148 (2013), 542–549.
7. Appels, L., Baeyens, J., Degrève, J., Dewil, R., Principles and potential of the anaerobic digestion of waste-activated sludge. Prog. Energy Combust. Sci. 34:6 (2008), 755–781.
8. Barisano, D., Freda, C., Nanna, F., Fanelli, E., Villone, A., Biomass gasification and in-bed contaminants removal: performance of iron enriched Olivine and bauxite in a process of steam/O2 gasification. Bioresour. Technol. 118 (2012), 187–194.
9. Bazargan, A., Rough, S.L., McKay, G., Compaction of palm kernel shell biochar for application as solid fuel. Biomass Bioenergy 70 (2014), 489–497.
10. Bazargan, A., Kostić, M.D., Stamenković, O.S., Veljković, V.B., McKay, G., A calcium oxide-based catalyst derived from palm kernel shell gasification residues for biodiesel production. Fuel 150 (2015), 519–525.
11. Beesley, L., Moreno-Jiménez, E., Gomez-Eyles, J.L., Harris, E., Robinson, B., Sizmur, T., A review of biochar’ potential role in the remediation, revegetation and restoration of contaminated soils. Environ. Pollut. 159:12 (2011), 3269–3282.
12. Bhandari, P.N., Kumar, A., Bellmer, D.D., Huhnke, R.L., Synthesis and evaluation of biochar-derived catalysts for removal of toluene (model tar) from biomass-generated producer gas. Renew. Energy 66 (2014), 346–353.
13. Brewer, C.E., Schmidt-Rohr, K., Satrio, J.A., Brown, R.C., Characterization of biochar from fast pyrolysis and gasification systems. Environ. Prog. Sustain. Energy 28:3 (2009), 386–396.
14. Brewer, C.E., Unger, R., Schmidt-Rohr, K., Brown, R.C., Criteria to select biochar for field studies based on biochar chemical properties. Bioenergy Res. 4:4 (2011), 312–323.
15. Brewer, C.E., Chuang, V.J., Masiello, C.A., Gonnermann, H., Gao, X., Dugan, B., Driver, L.E., Panzacchi, P., Zygourakis, K., Davies, C.A., New approaches to measuring biochar density and porosity. Biomass Bioenergy 66 (2014), 176–185.
16. Carpenter, D.L., Bain, R.L., Davis, R.E., Dutta, A., Feik, C.J., Gaston, K.R., Jablonski, W., Phillips, S.D., Nimlos, M.R., Pilot-scale gasification of corn stover, switchgrass, wheat straw, and wood: 1. Parametric study and comparison with literature. Ind. Eng. Chem. Res. 49:4 (2010), 1859–1871.
17. Cetin, E., Moghtaderi, B., Gupta, R., Wall, T., Influence of pyrolysis conditions on the structure and gasification reactivity of biomass chars. Fuel 83:16 (2004), 2139–2150.
18. Chan, F.L., Tanksale, A., Review of recent developments in Ni-based catalysts for biomass gasification. Renew. Sustain. Energy Rev. 38 (2014), 428–438.
19. Cheah, S., Malone, S.C., Feik, C.J., Speciation of sulfur in biochar produced from pyrolysis and gasification of oak and corn stover. Environ. Sci. Technol. 48:15 (2014), 8474–8480.
20. Chen, H., Liu, D., Shen, Z., Bao, B., Zhao, S., Wu, L., Functional biomass carbons with hierarchical porous structure for supercapacitor electrode materials. Electrochim. Acta 180 (2015), 241–251.
21. Deal, C., Brewer, C.E., Brown, R.C., Okure, M.A., Amoding, A., Comparison of kiln-derived and gasifier-derived biochar as soil amendments in the humid tropics. Biomass Bioenergy 37 (2012), 161–168.
22. Dehkhoda, A.M., West, A.H., Ellis, N., Biochar based solid acid catalyst for biodiesel production. Appl. Catal. A. 382:2 (2010), 197–204.
23. Ducousso, M., Weiss-Hortala, E., Nzihou, A., Castaldi, M.J., Reactivity enhancement of gasification biochar for catalytic applications. Fuel 159 (2015), 491–499.
24. Dupont, C., Nocquet, T., Da Costa, J.A., Verne-Tournon, C., Kinetic modelling of steam gasification of various woody biomass chars: influence of inorganic elements. Bioresour. Technol. 102:20 (2011), 9743–9748.
25. Elleuch, A., Halouani, K., Li, Y., Investigation of chemical and electrochemical reactions mechanisms in a direct carbon fuel cell using olive wood charcoal as sustainable fuel. J. Power Sources 281 (2015), 350–361.
26. Elmouwahidi, A., Zapata-Benabithe, Z., Carrasco-Marín, F., Moreno-Castilla, C., Activated carbons from KOH-activation of argan (Argania spinosa) seed shells as supercapacitor electrodes. Bioresour. Technol. 111 (2012), 185–190.
27. El-Rub, Z.A., Bramer, E., Brem, G., Experimental comparison of biomass chars with other catalysts for tar reduction. Fuel 87:10 (2008), 2243–2252.
28. Enders, A., Hanley, K., Whitman, T., Joseph, S., Lehmann, J., Characterization of biochar to evaluate recalcitrance and agronomic performance. Bioresour. Technol. 114 (2012), 644–653.
29. Esfahani, R.A.M., Osmieri, L., Specchia, S., Yusup, S., Tavasoli, A., Zamaniyan, A., H2-rich syngas production through mixed residual biomass and HDPE waste via integrated catalytic gasification and tar cracking plus bio-char upgrading. Chem. Eng. J. 308 (2017), 578–587.
30. Fortier, H., Westreich, P., Selig, S., Zelenietz, C., Dahn, J., Ammonia, cyclohexane, nitrogen and water adsorption capacities of an activated carbon impregnated with increasing amounts of ZnCl2, and designed to chemisorb gaseous NH3 from an air stream. J. Colloid Interface Sci. 320:2 (2008), 423–435.
31. Gabhi, R.S., Kirk, D.W., Jia, C.Q., Preliminary investigation of electrical conductivity of monolithic biochar. Carbon 116 (2017), 435–442.
32. Giddey, S., Badwal, S., Kulkarni, A., Munnings, C., A comprehensive review of direct carbon fuel cell technology. Prog. Energy Combust. Sci. 38:3 (2012), 360–399.
33. Griffith, S.M., Banowetz, G.M., Gady, D., Chemical characterization of chars developed from thermochemical treatment of Kentucky bluegrass seed screenings. Chemosphere 92:10 (2013), 1275–1279.
34. Guan, G., Chen, G., Kasai, Y., Lim, E.W.C., Hao, X., Kaewpanha, M., Abuliti, A., Fushimi, C., Tsutsumi, A., Catalytic steam reforming of biomass tar over iron-or nickel-based catalyst supported on calcined scallop shell. Appl. Catal. B. 115 (2012), 159–168.
35. Hammond, J., Shackley, S., Sohi, S., Brownsort, P., Prospective life cycle carbon abatement for pyrolysis biochar systems in the UK. Energy Policy 39:5 (2011), 2646–2655.
36. Han, J., Kim, H., The reduction and control technology of tar during biomass gasification/pyrolysis: an overview. Renew. Sustain. Energy Rev. 12:2 (2008), 397–416.
37. Hansen, V., Müller-Stöver, D., Ahrenfeldt, J., Holm, J.K., Henriksen, U.B., Hauggaard-Nielsen, H., Gasification biochar as a valuable by-product for carbon sequestration and soil amendment. Biomass Bioenergy 72 (2015), 300–308.
38. Hansen, V., Hauggaard-Nielsen, H., Petersen, C.T., Mikkelsen, T.N., Müller-Stöver, D., Effects of gasification biochar on plant-available water capacity and plant growth in two contrasting soil types. Soil Tillage Res. 161 (2016), 1–9.
39. Hansen, V., Müller-Stöver, D., Munkholm, L.J., Peltre, C., Hauggaard-Nielsen, H., Jensen, L.S., The effect of straw and wood gasification biochar on carbon sequestration, selected soil fertility indicators and functional groups in soil: an incubation study. Geoderma 269 (2016), 99–107.
40. Hardy, B., Dufey, J., The resistance of centennial soil charcoal to the “Walkley-Black” oxidation. Geoderma 303 (2017), 37–43.
41. Hernández, J.J., Lapuerta, M., Monedero, E., Characterisation of residual char from biomass gasification: effect of the gasifier operating conditions. J. Clean. Prod. 138 (2016), 83–93.
42. Huggins, T.M., Pietron, J.J., Wang, H., Ren, Z.J., Biffinger, J.C., Graphitic biochar as a cathode electrocatalyst support for microbial fuel cells. Bioresour. Technol. 195 (2015), 147–153.
43. Ibarrola, R., Shackley, S., Hammond, J., Pyrolysis biochar systems for recovering biodegradable materials: a life cycle carbon assessment. Waste Manage. 32:5 (2012), 859–868.
44. Jung, J.-M., Lee, J., Choi, D., Oh, J.-I., Lee, S.-R., Kim, J.-K., Kwon, E.E., Biochar as porous media for thermally-induced non-catalytic transesterification to synthesize fatty acid ethyl esters from coconut oil. Energy Convers. Manage. 145 (2017), 308–313.
45. Kasozi, G.N., Zimmerman, A.R., Nkedi-Kizza, P., Gao, B., Catechol and humic acid sorption onto a range of laboratory-produced black carbons (biochar). Environ. Sci. Technol. 44:16 (2010), 6189–6195.
46. Kastner, J.R., Miller, J., Geller, D.P., Locklin, J., Keith, L.H., Johnson, T., Catalytic esterification of fatty acids using solid acid catalysts generated from biochar and activated carbon. Catal. Today 190:1 (2012), 122–132.
47. Kim, M., Lee, Y., Park, J., Ryu, C., Ohm, T.-I., Partial oxidation of sewage sludge briquettes in a updraft fixed bed. Waste Manage. 49 (2016), 204–211.
48. Klinghoffer, N.B., Castaldi, M.J., Nzihou, A., Catalyst properties and catalytic performance of char from biomass gasification. Ind. Eng. Chem. Res. 51:40 (2012), 13113–13122.
49. Le, C., Kolaczkowski, S., Steam gasification of a refuse derived char: reactivity and kinetics. Chem. Eng. Res. Des. 102 (2015), 389–398.
50. Lee, J., Jung, J.-M., Oh, J.-I., Ok, Y.S., Kwon, E.E., Establishing a green platform for biodiesel synthesis via strategic utilization of biochar and dimethyl carbonate. Bioresour. Technol., 2017.
51. Lehmann, J., Rillig, M.C., Thies, J., Masiello, C.A., Hockaday, W.C., Crowley, D., Biochar effects on soil biota-a review. Soil Biol. Biochem. 43:9 (2011), 1812–1836.
52. Leijenhorst, E., Assink, D., Van de Beld, L., Weiland, F., Wiinikka, H., Carlsson, P., Öhrman, O., Entrained flow gasification of straw-and wood-derived pyrolysis oil in a pressurized oxygen blown gasifier. Biomass Bioenergy 79 (2015), 166–176.
53. Li, X., Zhu, Z., Chen, J., De Marco, R., Dicks, A., Bradley, J., Lu, G., Surface modification of carbon fuels for direct carbon fuel cells. J. Power Sources 186:1 (2009), 1–9.
54. Li, X., Shen, Q., Zhang, D., Mei, X., Ran, W., Xu, Y., Yu, G., Functional groups determine biochar properties (pH and EC) as studied by two-dimensional 13C NMR correlation spectroscopy. PLoS One, 8(6), 2013, e65949.
55. Li, X., Liu, L., Wang, X., Ok, Y.S., Elliott, J.A., Chang, S.X., Chung, H.-J., Flexible and self-healing aqueous supercapacitors for low temperature applications: polyampholyte gel electrolytes with biochar electrodes. Sci. Rep., 7, 2017.
56. Liu, H., Luo, C., Kato, S., Uemiya, S., Kaneko, M., Kojima, T., Kinetics of CO2/Char gasification at elevated temperatures: Part I: experimental results. Fuel Process. Technol. 87:9 (2006), 775–781.
57. Loha, C., Gu, S., De Wilde, J., Mahanta, P., Chatterjee, P.K., Advances in mathematical modeling of fluidized bed gasification. Renew. Sustain. Energy Rev. 40 (2014), 688–715.
58. Luo, C., Lü, F., Shao, L., He, P., Application of eco-compatible biochar in anaerobic digestion to relieve acid stress and promote the selective colonization of functional microbes. Water Res. 68 (2015), 710–718.
59. Ma, Z., Xiao, R., Zhang, H., Catalytic steam reforming of bio-oil model compounds for hydrogen-rich gas production using bio-char as catalyst. Int. J. Hydrogen Energy 42:6 (2016), 3579–3585.
60. Maneerung, T., Liew, J., Dai, Y., Kawi, S., Chong, C., Wang, C.-H., Activated carbon derived from carbon residue from biomass gasification and its application for dye adsorption: kinetics, isotherms and thermodynamic studies. Bioresour. Technol. 200 (2016), 350–359.
61. Manyà, J.J., Pyrolysis for biochar purposes: a review to establish current knowledge gaps and research needs. Environ. Sci. Technol. 46:15 (2012), 7939–7954.
62. Marks, E.A., Mattana, S., Alcañiz, J.M., Pérez-Herrero, E., Domene, X., Gasifier biochar effects on nutrient availability, organic matter mineralization, and soil fauna activity in a multi-year Mediterranean trial. Agric. Ecosyst. Environ. 215 (2016), 30–39.
63. McBeath, A.V., Smernik, R.J., Schneider, M.P., Schmidt, M.W., Plant, E.L., Determination of the aromaticity and the degree of aromatic condensation of a thermosequence of wood charcoal using NMR. Org. Geochem. 42:10 (2011), 1194–1202.
64. Mermoud, F., Golfier, F., Salvador, S., Van de Steene, L., Dirion, J.-L., Experimental and numerical study of steam gasification of a single charcoal particle. Combust. Flame 145:1 (2006), 59–79.
65. Meyer, S., Glaser, B., Quicker, P., Technical, economical, and climate-related aspects of biochar production technologies: a literature review. Environ. Sci. Technol. 45:22 (2011), 9473–9483.
66. Mohan, D., Sarswat, A., Ok, Y.S., Pittman, C.U., Organic and inorganic contaminants removal from water with biochar, a renewable, low cost and sustainable adsorbent-A critical review. Bioresour. Technol. 160 (2014), 191–202.
67. Munnings, C., Kulkarni, A., Giddey, S., Badwal, S., Biomass to power conversion in a direct carbon fuel cell. Int. J. Hydrogen Energy 39:23 (2014), 12377–12385.
68. Naisse, C., Alexis, M., Plante, A., Wiedner, K., Glaser, B., Pozzi, A., Carcaillet, C., Criscuoli, I., Rumpel, C., Can biochar and hydrochar stability be assessed with chemical methods?. Org. Geochem. 60 (2013), 40–44.
69. Nguyen, T.L.T., Hermansen, J.E., Nielsen, R.G., Environmental assessment of gasification technology for biomass conversion to energy in comparison with other alternatives: the case of wheat straw. J. Clean. Prod. 53 (2013), 138–148.
70. Nzihou, A., Stanmore, B., Sharrock, P., A review of catalysts for the gasification of biomass char, with some reference to coal. Energy 58 (2013), 305–317.
71. Ojeda, G., Mattana, S., Àvila, A., Alcañiz, J.M., Volkmann, M., Bachmann, J., Are soil-water functions affected by biochar application?. Geoderma 249 (2015), 1–11.
72. Pacioni, T.R., Soares, D., Di Domenico, M., Rosa, M.F., Moreira, R.d.F.P.M., José, H.J., Bio-syngas production from agro-industrial biomass residues by steam gasification. Waste Manage. 58 (2016), 221–229.
73. Pereira, E.I.P., Suddick, E.C., Six, J., Carbon abatement and emissions associated with the gasification of walnut shells for bioenergy and biochar production. PLoS One, 11(3), 2016, e0150837.
74. Peterson, S.C., Jackson, M.A., Simplifying pyrolysis: using gasification to produce corn stover and wheat straw biochar for sorptive and horticultural media. Ind. Crops Prod. 53 (2014), 228–235.
75. Plácido, J., Capareda, S., Production of silicon compounds and fulvic acids from cotton wastes biochar using chemical depolymerization. Ind. Crops Prod. 67 (2015), 270–280.
76. Prasara-A, J., Gheewala, S.H., Sustainable utilization of rice husk ash from power plants: a review. J. Clean. Prod., 2016.
77. Qian, K., Kumar, A., Reforming of lignin-derived tars over char-based catalyst using Py-GC/MS. Fuel 162 (2015), 47–54.
78. Qian, K., Kumar, A., Zhang, H., Bellmer, D., Huhnke, R., Recent advances in utilization of biochar. Renew. Sustain. Energy Rev. 42 (2015), 1055–1064.
79. Rabou, L.P., Zwart, R.W., Vreugdenhil, B.J., Bos, L., Tar in biomass producer gas, the Energy research Centre of the Netherlands (ECN) experience: an enduring challenge. Energy Fuels 23:12 (2009), 6189–6198.
80. Rafatullah, M., Sulaiman, O., Hashim, R., Ahmad, A., Adsorption of methylene blue on low-cost adsorbents: a review. J. Hazard. Mater. 177:1 (2010), 70–80.
81. Rogovska, N., Laird, D., Cruse, R., Trabue, S., Heaton, E., Germination tests for assessing biochar quality. J. Environ. Qual. 41:4 (2012), 1014–1022.
82. Rollinson, A.N., Gasification reactor engineering approach to understanding the formation of biochar properties. Proc. R. Soc. A, 472, 2016, 20150841.
83. Scala, F., Chirone, R., Salatino, P., Combustion and attrition of biomass chars in a fluidized bed. Energy Fuels 20:1 (2006), 91–102.
84. Shackley, S., Carter, S., Knowles, T., Middelink, E., Haefele, S., Haszeldine, S., Sustainable gasification-biochar systems? A case-study of rice-husk gasification in Cambodia, Part II: field trial results, carbon abatement, economic assessment and conclusions. Energy Policy 41 (2012), 618–623.
85. Shackley, S., Carter, S., Knowles, T., Middelink, E., Haefele, S., Sohi, S., Cross, A., Haszeldine, S., Sustainable gasification-biochar systems? A case-study of rice-husk gasification in Cambodia, Part I: context, chemical properties, environmental and health and safety issues. Energy Policy 42 (2012), 49–58.
86. Shafeeyan, M.S., Daud, W.M.A.W., Houshmand, A., Shamiri, A., A review on surface modification of activated carbon for carbon dioxide adsorption. J. Anal. Appl. Pyrol. 89:2 (2010), 143–151.
87. Shen, Y., Chars as carbonaceous adsorbents/catalysts for tar elimination during biomass pyrolysis or gasification. Renew. Sustain. Energy Rev. 43 (2015), 281–295.
88. Shen, Y., Yoshikawa, K., Recent progresses in catalytic tar elimination during biomass gasification or pyrolysis-a review. Renew. Sustain. Energy Rev. 21 (2013), 371–392.
89. Shen, Y., Linville, J.L., Ignacio-de Leon, P.A.A., Schoene, R.P., Urgun-Demirtas, M., Towards a sustainable paradigm of waste-to-energy process: enhanced anaerobic digestion of sludge with woody biochar. J. Clean. Prod. 135 (2016), 1054–1064.
90. Sohi, S., Krull, E., Lopez-Capel, E., Bol, R., A review of biochar and its use and function in soil. Adv. Agron. 105 (2010), 47–82.
91. Spokas, K.A., Review of the stability of biochar in soils: predictability of O: C molar ratios. Carbon Manage. 1:2 (2010), 289–303.
92. Spokas, K.A., Novak, J.M., Stewart, C.E., Cantrell, K.B., Uchimiya, M., DuSaire, M.G., Ro, K.S., Qualitative analysis of volatile organic compounds on biochar. Chemosphere 85:5 (2011), 869–882.
93. Sun, H., Hockaday, W.C., Masiello, C.A., Zygourakis, K., Multiple controls on the chemical and physical structure of biochar. Ind. Eng. Chem. Res. 51:9 (2012), 3587–3597.
94. Taupe, N., Lynch, D., Wnetrzak, R., Kwapinska, M., Kwapinski, W., Leahy, J., Updraft gasification of poultry litter at farm-scale-A case study. Waste Manage. 50 (2016), 324–333.
95. Tay, T., Ucar, S., Karagöz, S., Preparation and characterization of activated carbon from waste biomass. J. Hazard. Mater. 165:1 (2009), 481–485.
96. Thompson, S.P., Parker, J.E., Tang, C.C., Thermal breakdown of calcium carbonate and constraints on its use as a biomarker. Icarus 229 (2014), 1–10.
97. Thompson, K.A., Shimabuku, K.K., Kearns, J.P., Knappe, D.R., Summers, R.S., Cook, S.M., Environmental comparison of biochar and activated carbon for tertiary wastewater treatment. Environ. Sci. Technol. 50:20 (2016), 11253–11262.
98. Wang, B., Li, C., Liang, H., Bioleaching of heavy metal from woody biochar using Acidithiobacillus ferrooxidans and activation for adsorption. Bioresour. Technol. 146 (2013), 803–806.
99. Wiedemeier, D.B., Abiven, S., Hockaday, W.C., Keiluweit, M., Kleber, M., Masiello, C.A., McBeath, A.V., Nico, P.S., Pyle, L.A., Schneider, M.P., Aromaticity and degree of aromatic condensation of char. Org. Geochem. 78 (2015), 135–143.
100. Wiedner, K., Rumpel, C., Steiner, C., Pozzi, A., Maas, R., Glaser, B., Chemical evaluation of chars produced by thermochemical conversion (gasification, pyrolysis and hydrothermal carbonization) of agro-industrial biomass on a commercial scale. Biomass Bioenergy 59 (2013), 264–278.
101. Wu, H., Yip, K., Tian, F., Xie, Z., Li, C.-Z., Evolution of char structure during the steam gasification of biochar produced from the pyrolysis of various mallee biomass components. Ind. Eng. Chem. Res. 48:23 (2009), 10431–10438.
102. Xiao, G., Ni, M.-J., Chi, Y., Cen, K.-F., Low-temperature gasification of waste tire in a fluidized bed. Energy Convers. Manage. 49:8 (2008), 2078–2082.
103. Xiu, S., Shahbazi, A., Li, R., Characterization, modification and application of biochar for energy storage and catalysis: a review. Trends Renew. Energy 3:1 (2017), 86–101.
104. Xu, C.C., Hamilton, S., Ghosh, M., Hydro-treatment of Athabasca vacuum tower bottoms in supercritical toluene with microporous activated carbons and metal-carbon composite. Fuel 88:11 (2009), 2097–2105.
105. Xue, Y., Gao, B., Yao, Y., Inyang, M., Zhang, M., Zimmerman, A.R., Ro, K.S., Hydrogen peroxide modification enhances the ability of biochar (hydrochar) produced from hydrothermal carbonization of peanut hull to remove aqueous heavy metals: batch and column tests. Chem. Eng. J. 200 (2012), 673–680.
106. Yargicoglu, E.N., Sadasivam, B.Y., Reddy, K.R., Spokas, K., Physical and chemical characterization of waste wood derived biochar. Waste Manage. 36 (2015), 256–268.
107. Yeo, T., Tan, I., Abdullah, M., Development of adsorption air-conditioning technology using modified activated carbon-A review. Renew. Sustain. Energy Rev. 16:5 (2012), 3355–3363.
108. Yip, K., Tian, F., Hayashi, J.-I., Wu, H., Effect of alkali and alkaline earth metallic species on biochar reactivity and syngas compositions during steam gasification. Energy Fuels 24:1 (2009), 173–181.
109. Yu, X.-Y., Ying, G.-G., Kookana, R.S., Reduced plant uptake of pesticides with biochar additions to soil. Chemosphere 76:5 (2009), 665–671.
110. Yu, M.M., Masnadi, M.S., Grace, J.R., Bi, X.T., Lim, C.J., Li, Y., Co-gasification of biosolids with biomass: thermogravimetric analysis and pilot scale study in a bubbling fluidized bed reactor. Bioresour. Technol. 175 (2015), 51–58.
111. Zhang, X., Zhang, S., Yang, H., Feng, Y., Chen, Y., Wang, X., Chen, H., Nitrogen enriched biochar modified by high temperature CO2-ammonia treatment: characterization and adsorption of CO2. Chem. Eng. J. 257 (2014), 20–27.
112. Zhao, P., Mao, Z., Jin, D., Zhao, P., Sun, B., Sun, W., Pang, X., Investigation on log responses of bulk density and thermal neutrons in coalbed with different ranks. J. Geophys. Eng., 12(3), 2015, 477.