References

  1. M. Owlad, M.K. Aroua, W.A.W. Daud, S. Baroutian, Removal of hexavalent chromium-contaminated water and wastewater: a review, Water Air Soil Pollut., 200 (2009) 59–77.
  2. R.A. Gil, S. Cerutti, J.A. Gásquez, R.A. Olsina, L.D. Martinez, Preconcentration and speciation of chromium in drinking water samples by coupling of on-line sorption on activated carbon to ETAAS determination, Talanta, 68 (2006) 1065–1070.
  3. J. Kotaś, Z. Stasicka, Chromium occurrence in the environment and methods of its speciation, Environ. Pollut., 107 (2000) 263–283.
  4. D. Mohan, C.U. Pittman Jr., Activated carbons and low cost adsorbents for remediation of tri-and hexavalent chromium from water, J. Hazard. Mater., 137 (2006) 762–811.
  5. P.K. Ghosh, Hexavalent chromium [Cr(VI)] removal by acid modified waste activated carbons, J. Hazard. Mater., 171 (2009) 116–122.
  6. S. Babel, T.A. Kurniawan, Cr(VI) removal from synthetic wastewater using coconut shell charcoal and commercial activated carbon modified with oxidizing agents and/or chitosan, Chemosphere, 54 (2004) 951–967.
  7. M.A. Hashem, Adsorption of lead ions from aqueous solution by okra wastes, Int. J. Phys. Sci., 2 (2007) 178–184.
  8. M. Naushad, T. Ahamad, Z.A. Al-Othman, A.H. Al-Muhtaseb, Green and eco-friendly nanocomposite for the removal of toxic Hg(II) metal ion from aqueous environment: adsorption kinetics and isotherm modelling, J. Mol. Liq., 279 (2019) 1–8.
  9. J. Acharya, J.N. Sahu, B.K. Sahoo, C.R. Mohanty, B.C. Meikap, Removal of chromium(VI) from wastewater by activated carbon developed from Tamarind wood activated with zinc chloride, Chem. Eng. J., 150 (2009) 25–39.
  10. N.K. Hamadi, X.D. Chen, M.M. Farid, M.G. Lu, Adsorption kinetics for the removal of chromium(VI) from aqueous solution by adsorbents derived from used tyres and sawdust, Chem. Eng. J., 84 (2001) 95–105.
  11. T.N. Tran, D.G. Kim, S.O. Ko, Adsorption mechanisms of manganese(II) ions onto acid-treated activated carbon, KSCE J. Civ. Eng., 22 (2018) 3772–3782.
  12. Z.L. Deng, M.N. Liang, H.H. Li, Z.J. Zhu, Advances in preparation of modified activated carbon and its applications in the removal of chromium(VI) from aqueous solutions, IOP Conf. Ser.: Earth Environ. Sci., 39 (2016) 012065, doi: 10.1088/1755-1315/39/1/012065.
  13. P. Chingombe, B. Saha, R.J. Wakeman, Surface modification and characterisation of a coal-based activated carbon, Carbon, 43 (2005) 3132–3143.
  14. C.Y. Yin, M.K. Aroua, W.M.A.W. Daud, Review of modifications of activated carbon for enhancing contaminant uptakes from aqueous solutions, Sep. Purif. Technol., 52 (2007) 403–415.
  15. N. Adhoum, L. Monser, Removal of cyanide from aqueous solution using impregnated activated carbon, Chem. Eng. Process., 41 (2002) 17–21.
  16. N. Zhao, N. Wei, J. Li, Z. Qiao, J. Cui, F. He, Surface properties of chemically modified activated carbons for adsorption rate of Cr(VI), Chem. Eng. J., 115 (2005) 133–138.
  17. S.J. Park, Y.S. Jang, Pore structure and surface properties of chemically modified activated carbons for adsorption mechanism and rate of Cr(VI), J. Colloid Interface Sci., 249 (2002) 458–463.
  18. M. Sweetman, S. May, N. Mebberson, P. Pendleton, K. Vasilev, S. Plush, J. Hayball, Activated carbon, carbon nanotubes and graphene: materials and composites for advanced water purification, C-J. Carbon Res., 3 (2017) 18, doi: 10.3390/c3020018.
  19. K. Zotter, I. Licskó, Removal of chromium(VI) and other heavy metals from groundwaters in neutral and alkaline media, Water Sci. Technol., 26 (1992) 207–216.
  20. R. Dobrowolski, M. Otto, Study of chromium(VI) adsorption onto modified activated carbons with respect to analytical application, Adsorption, 16 (2010) 279–286.
  21. Y. Bian, Z. Bian, J. Zhang, A. Ding, S. Liu, L. Zheng, H. Wang, Adsorption of cadmium ions from aqueous solutions by activated carbon with oxygen-containing functional groups, Chin. J. Chem. Eng., 23 (2015) 1705–1711.
  22. A. Murugesan, T. Vidhyadevi, S.D. Kirupha, L. Ravikumar, S. Sivanesan, Removal of chromium(VI) from aqueous solution using chemically modified corncorb‐activated carbon: equilibrium and kinetic studies, Environ. Prog. Sustainable Energy, 32 (2013) 673–680.
  23. M.K. Rai, G. Shahi, V. Meena, R. Meena, S. Chakraborty, R.S. Singh, B.N. Rai, Removal of hexavalent chromium Cr(VI) using activated carbon prepared from mango kernel activated with H3PO4, Resour.-Effic. Technol., 2 (2016) S63–S70.
  24. D. Aggarwal, M. Goyal, R.C. Bansal, Adsorption of chromium by activated carbon from aqueous solution, Carbon, 37 (1999) 1989–1997.
  25. T.D. Minh, B.K., Lee, Effects of functionality and textural characteristics on the removal of Cd(II) by ammoniated and chlorinated nanoporous activated carbon, J. Mater. Cycles Waste Manage., 19 (2017) 1022–1035.
  26. US EPA, Methods for Chemical Analysis of Water and Wastes “Chromium-Method 218.1”, EPA, 1996.
  27. D.P. Vargas, L. Giraldo, A. Erto, J.C. Moreno-Piraján, Chemical modification of activated carbon monoliths for CO2 adsorption, J. Therm. Anal., 114 (2013) 1039–1047.
  28. S. Singha, U. Sarkar, P. Luharuka, Functionalized granular activated carbon and surface complexation with chromates and bi-chromates in wastewater, Sci. Total Environ., 447 (2013) 472–487.
  29. F.C. Wu, R.L. Tseng, C.C. Hu, Comparisons of pore properties and adsorption performance of KOH-activated and steamactivated carbons, Microporous Mesoporous Mater., 80 (2005) 95–106.
  30. J. Shu, S. Cheng, H. Xia, L. Zhang, J. Peng, C. Li, S. Zhang, Copper loaded on activated carbon as an efficient adsorbent for removal of methylene blue, RSC Adv., 7 (2017) 14395–14405.
  31. Z. Hongyue, S.H.I. Lei, S.U.N. Qi, Reduction of nitrobenzene with hydrazine hydrate catalyzed by acid-treated activated carbon, Chin. J. Catal., 33 (2012) 1463–1469.
  32. J.P. Chen, S. Wu, Acid/base-treated activated carbons: characterization of functional groups and metal adsorptive properties, Langmuir, 20 (2004) 2233–2242.
  33. D.L. Pavia, G.M. Lampman, G.S. Kriz, J.A. Vyvyan, Chapter 2: Infrared Spectroscopy, In: Introduction to Spectroscopy, 5th ed., Cengage Learning, Stamford, CT, 2015, pp. 14–106.
  34. H.L. Chiang, C.P. Huang, P.C. Chiang, The surface characteristics of activated carbon as affected by ozone and alkaline treatment, Chemosphere, 47 (2002) 257–265.
  35. S. Parlayici, V. Eskizeybek, A. Avcı, E. Pehlivan, Removal of chromium(VI) using activated carbon-supported-functionalized carbon nanotubes, J. Nanostruct. Chem., 5 (2015) 255–263.
  36. W. Daoud, T. Ebadi, A. Fahimifar, Optimization of hexavalent chromium removal from aqueous solution using acidmodified granular activated carbon as adsorbent through response surface methodology, Korean J. Chem. Eng., 32 (2015) 1119–1128.
  37. E. Bulut, M. Özacar, I.A. Şengil, Equilibrium and kinetic data and process design for adsorption of Congo Red onto bentonite, J. Hazard. Mater., 154 (2008) 613–622.
  38. D. Duranoğlu, A.W. Trochimczuk, U. Beker, Kinetics and thermodynamics of hexavalent chromium adsorption onto activated carbon derived from acrylonitrile-divinylbenzene copolymer, Chem. Eng. J., 187 (2012) 193–202.
  39. G. Sharma, M. Naushad, H. Ala’a, A. Kumar, M.R. Khan, S. Kalia, Shweta, M. Bala, A. Sharma, Fabrication and characterization of chitosan-crosslinked-poly (alginic acid) nanohydrogel for adsorptive removal of Cr(VI) metal ion from aqueous medium, Int. J. Biol. Macromol., 95 (2017) 484–493.
  40. R.S. Summers, D.R.U. Knappe, V.L. Snoeyink, Adsorption of Organic Compounds by Activated Carbon, J.K. Edzwald, Ed., Water Quality and Treatment: A Handbook on Drinking Water, 6th ed., McGraw-Hill, New York, 2011.
  41. M. Pérez-Candela, J. Martín-Martínez, R. Torregrosa-Maciá, Chromium(VI) removal with activated carbons, Water Res., 29 (1995) 2174–2180.
  42. T. Dula, K. Siraj, S.A. Kitte, Adsorption of hexavalent chromium from aqueous solution using chemically activated carbon prepared from locally available waste of bamboo (Oxytenanthera abyssinica), ISRN Environ. Chem., 2014 (2014) 438245, doi: 10.1155/2014/438245.
  43. B. Kakavandi, R.R. Kalantary, M. Farzadkia, A.H. Mahvi, A. Esrafili, A. Azari, A.B. Javid, Enhanced chromium(VI) removal using activated carbon modified by zero valent iron and silver bimetallic nanoparticles, J. Environ. Health Sci. Eng., 12 (2014) 115, doi: 10.1186/s40201-014-0115-5.
  44. D. Berihun, Removal of chromium from industrial wastewater by adsorption using coffee husk, J. Mater. Sci. Eng., 6 (2017) 2169–0022.
  45. M. Owlad, M.K. Aroua, W.M.A.W. Daud, Hexavalent chromium adsorption on impregnated palm shell activated carbon with polyethyleneimine, Bioresour. Technol., 101 (2010) 5098–5103.
  46. Z.A. Al-Othman, R. Ali, M. Naushad, Hexavalent chromium removal from aqueous medium by activated carbon prepared from peanut shell: adsorption kinetics, equilibrium and thermodynamic studies, Chem. Eng. J., 184 (2012) 238–247.
  47. M.A. Atieh, Removal of chromium(VI) from polluted water using carbon nanotubes supported with activated carbon, Procedia Environ. Sci., 4 (2011) 281–293.
  48. D.P. Mungasavalli, T. Viraraghavan, Y.C. Jin, Biosorption of chromium from aqueous solutions by pretreated Aspergillus niger: batch and column studies, Colloid Surf., A, 301 (2007) 214–223.
  49. N.H. Hsu, S.L. Wang, Y.H. Liao, S.T. Huang, Y.M. Tzou, Y.M. Huang, Removal of hexavalent chromium from acidic aqueous solutions using rice straw-derived carbon, J. Hazard. Mater., 171 (2009) 1066–1070.
  50. S. Rangabhashiyam, N. Selvaraju, Adsorptive remediation of hexavalent chromium from synthetic wastewater by a natural and ZnCl2 activated Sterculia guttata shell, J. Mol. Liq., 207 (2015) 39–49.
  51. M.B. McBride, Environmental Chemistry of Soils, Oxford University Press, New York, NY, 1994.