1. S. Fan, Y. Wang, Z. Wang, J. Tang, J. Tang, X. Li, Removal of methylene blue from aqueous solution by sewage sludge-derived biochar: adsorption kinetics, equilibrium, thermodynamics and mechanism, J. Environ. Chem. Eng., 5 (2017) 601–611.
  2. J.H. Li, G.H. Lv, W.B. Bai, Q. Liu, Y.C. Zhang, J.Q. Song, Modification and use of biochar from wheat straw (Triticum aestivum L.) for nitrate and phosphate removal from water, Desal. Water Treat., 57 (2016) 4681–4693.
  3. N. Zhu, T. Yan, J. Qiao, H. Cao, Adsorption of arsenic, phosphorus and chromium by bismuth impregnated biochar: adsorption mechanism and depleted adsorbent utilization, Chemosphere, 164 (2016) 32–40.
  4. S. Kizito, S. Wu, W.K. Kirui, M. Lei, Q. Lu, H. Bah, R. Dong, Evaluation of slow pyrolyzed wood and rice husks biochar for adsorption of ammonium nitrogen from piggery manure anaerobic digestate slurry, Sci. Total Environ., 505 (2015) 102–112.
  5. A. Bogusz, P. Oleszczuk, R. Dobrowolski, Application of laboratory prepared and commercially available biochars to adsorption of cadmium, copper and zinc ions from water, Bioresour. Technol., 196 (2015) 540–549.
  6. Y. Zhang, B. Cao, L. Zhao, L. Sun, Y. Gao, J. Li, F. Yang, Biocharsupported reduced graphene oxide composite for adsorption and coadsorption of atrazine and lead ions, Appl. Surf. Sci., 427 (2018) 147–155.
  7. S. Zhu, X. Huang, F. Ma, L. Wang, X. Duan, S. Wang, Catalytic removal of aqueous contaminants on N-doped graphitic biochars: inherent roles of adsorption and nonradical mechanisms, Environ. Sci. Technol., 52 (2018) 8649–8658.
  8. R. Khamirchi, A. Hosseini-Bandegharaei, A. Alahabadi, S. Sivamani, A. Rahmani-Sani, T. Shahryari, I. Anastopoulos, M. Miri, H.N. Tran, Adsorption property of Br-PADAP-impregnated multiwall carbon nanotubes towards uranium and its performance in the selective separation and determination of uranium in different environmental samples, Ecotoxicol. Environ. Saf., 150 (2018) 136–143.
  9. H. Bamdad, K. Hawboldt, S. MacQuarrie, A review on common adsorbents for acid gases removal: focus on biochar, Renewable Sustainable Energ. Rev., 81 (2018) 1705–1720.
  10. L. Chen, F. Li, Y. Wei, G. Li, K. Shen, H.J. He, High cadmium adsorption on nanoscale zero-valent iron coated Eichhornia crassipes biochar, Environ. Chem. Lett., 17 (2019) 589–594.
  11. N. Sivarajasekar, N. Mohanraj, S. Sivamani, J. Prakash Maran, I. Ganesh Moorthy, K. Balasubramani, Statistical optimization studies on adsorption of ibuprofen onto Albizialebbeck seed pods activated carbon prepared using microwave irradiation, Mater. Today:. Proc., 5 (2018) 7264–7274.
  12. D. Mohan, A. Sarswat, Y.S. Ok, C.U. Pittman Jr., 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.
  13. C. Parvathi, U.S. Shoba, C. Prakash, S. Sivamani, Manihot esculenta peel powder: effective adsorbent for removal of various textile dyes from aqueous solutions, J. Test. Eval., 46 (2018) 2299–2310.
  14. D. Kołodyńska, R. Wnętrzak, J.J. Leahy, M.H.B. Hayes, W. Kwapiński, Z. Hubicki, Kinetic and adsorptive characterization of biochar in metal ions removal, Chem. Eng. J., 197 (2012) 295–305.
  15. T. Clough, L. Condron, C. Kammann, C. Müller, A review of biochar and soil nitrogen dynamics, Agronomy, 3 (2013) 275–293.
  16. D. Kavitha, C. Namasivayam, Recycling coir pith, an agricultural solid waste, for the removal of procion orange from wastewater, Dyes Pigm., 74 (2007) 237–248.
  17. Y. Feng, H. Zhou, G. Liu, J. Qiao, J. Wang, H. Lu, C. Yang, Y. Wu, Methylene blue adsorption onto swede rape straw (Brassica napus L.) modified by tartaric acid: equilibrium, kinetic and adsorption mechanisms, Bioresour. Technol., 125 (2012) 138–144.
  18. T. Santhi, A.L. Prasad, S. Manonmani, A comparative study of microwave and chemically treated Acacia nilotica leaf as an eco friendly adsorbent for the removal of rhodamine B dye from aqueous solution, Arabian J. Chem., 7 (2014) 494–503.
  19. N. Sharma, B.K. Nandi, Utilization of sugarcane baggase, an agricultural waste to remove malachite green dye from aqueous solutions, J. Mater. Environ. Sci., 4 (2013) 1052–1065.
  20. S. Patil, S. Renukdas, N. Patel, Removal of methylene blue, a basic dye from aqueous solutions by adsorption using teak tree (Tectona grandis) bark powder, Int. J. Environ. Sci., 1 (2011) 711.
  21. F.A. Pavan, A.C. Mazzocato, Y. Gushikem, Removal of methylene blue dye from aqueous solutions by adsorption using yellow passion fruit peel as adsorbent, Bioresour. Technol., 99 (2008) 3162–3165.
  22. C. Theivarasu, S. Mylsamy, N. Sivakumar, Cocoa shell as adsorbent for the removal of methylene blue from aqueous solution: kinetic and equilibrium study, Universe J. Environ. Res. Technol., 1 (2011) 70–78.
  23. B. Armagan, F. Toprak, Optimum isotherm parameters for reactive azo dye onto pistachio nut shells: comparison of linear and non-linear methods, Pol. J. Environ. Stud., 22 (2013) 1007–1011.
  24. R. Srivastava, D.C. Rupainwar, A comparative evaluation for adsorption of dye on neem bark and mango bark powder, Indian J. Chem. Technol., 18 (2011) 67–75.
  25. L. Sun, S. Wan, W. Luo, Biochars prepared from anaerobic digestion residue, palm bark, and eucalyptus for adsorption of cationic methylene blue dye: characterization, equilibrium, and kinetic studies, Bioresour. Technol., 140 (2013) 406–413.
  26. M.S. Reddy, V. Nirmala, C. Ashwini, Bengal gram seed husk as an adsorbent for the removal of dye from aqueous solutions– batch studies, Arabian J. Chem., 10 (2017) S2554–S2566.
  27. Y. Su, B. Zhao, W. Xiao, R. Han, Adsorption behavior of light green anionic dye using cationic surfactant-modified wheat straw in batch and column mode, Environ. Sci. Pollut. Res., 20 (2013) 5558–5568.
  28. C. Umpuch, B. Jutarat, Adsorption of organic dyes from aqueous solution by surfactant modified corn straw, Int. J. Chem. Eng. Appl., 4 (2013) 134.
  29. W.K. Kim, T. Shim, Y.S. Kim, S. Hyun, C. Ryu, Y.K. Park, J. Jung, Characterization of cadmium removal from aqueous solution by biochar produced from a giant Miscanthus at different pyrolytic temperatures, Bioresour. Technol., 138 (2013) 266–270.
  30. W. Zhang, S. Mao, H. Chen, L. Huang, R. Qiu, Pb(II) and Cr(VI) sorption by biochars pyrolyzed from the municipal wastewater sludge under different heating conditions, Bioresour. Technol., 147 (2013) 545–552.
  31. J. Ren, N. Li, L. Li, J.K. An, L. Zhao, N.Q. Ren, Granulation and ferric oxides loading enable biochar derived from cotton stalk to remove phosphate from water, Bioresour. Technol., 178 (2015) 119–125.
  32. S. Prapagdee, S. Piyatiratitivorakul, A. Petsom, Activation of cassava stem biochar by physico-chemical method for stimulating cadmium removal efficiency from aqueous solution, Environment Asia, 7 (2014) 60–69.
  33. L. Meili, R.P.S. Godoy, J.I. Soletti, S.H.V. Carvalho, L.M.O. Ribeiro, M.G.C. Silva, M.G.A. Vieira, M.L. Gimenes, Cassava (Manihot esculenta Crantz) stump biochar: physical/ chemical characteristics and dye affinity, Chem. Eng. Commun., 206 (2019) 829–841.
  34. M.K.Z.M. Zaid, N.A. Jamion, Q. Omar, S.K. Yong, Sorption of malachite green (MG) by cassava stem biochar (CSB) kinetic and isotherm studies, J. Fundam. Appl. Sci., 9 (2017) 273–287.
  35. J. Luo, C. Ge, H. Yu, D. Feng, P. Huang, F. Li, Cassava waste derived biochar as soil amendments: effects on kinetics, equilibrium and thermodynamics of atrazine adsorption, Fresenius Environ. Bull., 25 (2016) 4607–4617.
  36. J. Yu, X. Zhang, D. Wang, P. Li, Adsorption of methyl orange dye onto biochar adsorbent prepared from chicken manure, Water Sci. Technol., 77 (2018) 1303–1312.
  37. Y. Yang, X. Lin, B. Wei, Y. Zhao, J. Wang, Evaluation of adsorption potential of bamboo biochar for metal-complex dye: equilibrium, kinetics and artificial neural network modelling, Int. J. Environ. Sci. Technol., 11 (2014) 1093–1100.
  38. M. Agarwal, J. Tardio, S.V. Mohan, Pyrolysis biochar from cellulosic municipal solid waste as adsorbent for azo dye removal: equilibrium isotherms and kinetics analysis, Int. J. Environ. Sci. Dev., 6 (2015) 67–72.
  39. F. Papari, P.R. Najafabadi, B. Ramavandi, Fluoride ion removal from aqueous solution, groundwater, and seawater by granular and powdered Conocarpus erectus biochar, Desal. Water Treat., 65 (2017) 375–386.
  40. D. Angın, E. Altintig, T.E. Köse, 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.
  41. X. Chen, G. Chen, L. Chen, Y. Chen, J. Lehmann, M.B. McBride, A.G. Hay, Adsorption of copper and zinc by biochars produced from pyrolysis of hardwood and corn straw in aqueous solution, Bioresour. Technol., 102 (2011) 8877–8884.
  42. M. Inyang, B. Gao, Y. Yao, Y. Xue, A.R. Zimmerman, P. Pullammanappallil, X. Cao, Removal of heavy metals from aqueous solution by biochars derived from anaerobically digested biomass, Bioresour. Technol., 110 (2012) 50–56.