1. S. Tamjidi, H. Esmaeili, B.K. Moghadas, Application of magnetic adsorbents for removal of heavy metals from wastewater: a review study, Mater. Res. Express., 6 (2019) 102004, doi: 10.1088/2053-1591/ab3ffb.
  2. X. Liu, R. Ma, X. Wang, Y. Ma, Y. Yang, L. Zhuang, S. Zhang, R. Jehan, J. Chen, X. Wang, Graphene oxide-based materials for efficient removal of heavy metal ions from aqueous solution: a review, Environ. Pollut., 252A (2019) 62–73.
  3. H. Zhang, H. Yang, B. Sarsenbekuly, M. Zhang, H. Jiang, W. Kang, S. Aidarova, The advances of organic chromium based polymer gels and their application in improved oil recovery, Adv. Colloid Interface Sci., 282 (2020) 102214, doi: 10.1016/j.cis.2020.102214.
  4. G. Durai, M. Rajasimman, Biological treatment of tannery wastewater – a review, J. Environ. Sci. Technol., 4 (2011) 1–17.
  5. A. Cassano, L.D. Pietra, Drioli, Integrated membrane process for the recovery of chromium salts from tannery effluents, Ind. Eng. Chem. Res., 46 (2007) 6825–6830.
  6. Y. Tang, J. Zhao, Y. Zhang, J. Zhou, B. Shi, Conversion of tannery solid waste to an adsorbent for high-efficiency dye removal from tannery wastewater: a road to circular utilization, Chemosphere, 263 (2021) 127987, doi:10.1016/j.chemosphere.2020.127987.
  7. S. Sharma, A. Adholeya, Detoxification and accumulation of chromium from tannery effluent and spent chrome effluent by Paecilomyces lilacinus fungi, Int. Biodeterior. Biodegrad., 65 (2011) 309–317.
  8. N.K. Mondal, S. Chakraborty, Adsorption of Cr(VI) from aqueous solution on graphene oxide (GO) prepared from graphite: equilibrium, kinetic and thermodynamic studies, Appl. Water Sci., 10 (2020) 61, doi:10.1007/s13201-020-1142-2.
  9. T.S. Anirudhan, P.G. Radhakrishnan, Chromium(III) removal from water and wastewater using a carboxylate-functionalized cation exchanger prepared from a lignocellulosic residue, J. Colloid Interface Sci., 15 (2007) 268–276.
  10. J. Li, M. Fan, M. Li, X. Lium, Cr(VI) removal from groundwater using double surfactant-modified nanoscale zero-valent iron (nZVI): effects of materials in different status, Sci. Total Environ., 717 (2020) 137112, doi:10.1016/j.scitotenv.2020.137112.
  11. E. Abu-Dansoa, S. Peraniemi, T. Leiviska, T.Y. Kim, K.M. Tripathi, A. Bhatnagara, Synthesis of clay-cellulose biocomposite for the removal of toxic metal ions from aqueous medium, J. Hazard. Mater., 381 (2020) 120871–120882.
  12. S. Sarode, P. Upadhyay, M.A. Khosa, T. Mak, A. Shakir, S. Song, A. Ullah, Overview of wastewater treatment methods with special focus on biopolymer chitin-chitosan, Int. J. Biol. Macromol., 121 (2019) 1086–1100.
  13. C.P.J. Isaac, A. Sivakumar, Removal of lead and cadmium ions from water using Annona squamosa shell: kinetic and equilibrium studies, Desal. Water Treat., 51 (2013) 7700–7709.
  14. T.A. Saleh, Nanocomposite of carbon nanotubes/silica nanoparticles and their use for adsorption of Pb(II): from surface properties to sorption mechanism, Desal. Water Treat., 57 (2016) 10730–10744.
  15. T.A. Saleh, Advanced trends of shale inhibitors for enhanced properties of water-based drilling fluid, Upstream Oil Gas Technol., 8 (2022) 100069, doi: 10.1016/j.upstre.2022.100069.
  16. T.A. Saleh, Experimental and analytical methods for testing inhibitors and fluids in water-based drilling environments, TrAC, Trends Anal. Chem., 149 (2022) 116543, doi: 10.1016/j. trac.2022.116543.
  17. T.A. Saleh, Isotherm, kinetic, and thermodynamic studies on Hg(II) adsorption from aqueous solution by silica- multiwall carbon nanotubes, Environ. Sci. Pollut. Res., 22 (2015) 16721–16731.
  18. M. Belhachemi, F. Addoun, Adsorption of Congo red onto activated carbons having different surface properties: studies of kinetics and adsorption equilibrium, Desal. Water Treat., 37 (2012) 122–129.
  19. T.A. Saleh, A.M. Musa, S.A. Ali, Synthesis of hydrophobic cross-linked polyzwitterionic acid for simultaneous sorption of Eriochrome black T and chromium ions from binary hazardous waters, J. Colloid Interface Sci., 468 (2016) 324–333.
  20. O.A. Bin-Dahman, T.A. Saleh, Synthesis of polyamide grafted on biosupport as polymeric adsorbents for the removal of dye and metal ions, Biomass Convers. Biorefin., (2022), doi: 10.1007/s13399-022-02382-8.
  21. A.A. Basaleh, M.H. Al-Malack, T.A. Saleh, Polyamide-baghouse dust nanocomposite for removal of methylene blue and metals: characterization, kinetic, thermodynamic and regeneration, Chin. J. Chem. Eng., 39 (2021) 112–125.
  22. A.C. Gonçalves Jr., D. Schwantes, M.A. Campagnolo, D.C. Dragunski, C.R.T. Tarley, A.K.D.S. Silva, Removal of toxic metals using endocarp of açaí berry as biosorbent, Water Sci. Technol., 77 (2018) 1547–1557.
  23. K.R. Jena, Studies on the removal of Pb(II) from wastewater by activated carbon developed from neem wood activated with sulphuric acid, Int. J. Eng. Sci. Res., 2 (2012) 382–394.
  24. H. Panda, N. Tiadi, M. Mohanty, C.R. Mohanty, Studies on adsorption behavior of an industrial waste for removal of chromium from aqueous solution, S. Afr. J. Chem. Eng., 23 (2017) 132–138.
  25. Z.Z. Chowdhury, S.M. Zain, R.A. Khan, M.S. Islam, Preparation and characterizations of activated carbon from kenaf fiber for equilibrium adsorption studies of copper from wastewater, Korean J. Chem. Eng., 29 (2012) 1187–1195.
  26. T.A. Saleh, Simultaneous adsorptive desulfurization of diesel fuel over bimetallic nanoparticles loaded on activated carbon, J. Cleaner Prod., 172 (2018) 2123–2132.
  27. T.A. Saleh, The influence of treatment temperature on the acidity of MWCNT oxidized by HNO3 or a mixture of HNO3/ H2SO4, Appl. Surf. Sci., 257 (2011) 7746–7751.
  28. Z. Xiao, W. Chen, K. Liu, P. Cui, D. Zhan, Porous biomass carbon derived from peanut shells as electrode materials with enhanced electrochemical performance for super capacitors, Int. J. Electrochem. Sci., 13 (2018) 5370–5381.
  29. A. Demirbas, Adsorption of Cr(III) and Cr(VI) ions from aqueous solutions on to modified lignin, Energy Sources, 27 (2005) 1449–1455.
  30. S. Deng, R. Bai, Removal of trivalent and hexavalent chromium with aminated polyacrylonitrile fibers: performance and mechanisms, Water Res., 38 (2004) 2424–2432.
  31. Y. Wu, S. Zhang, X. Guo, H. Huang, Adsorption of chromium(III) on lignin, Bioresour. Technol., 99 (2008) 7709–7715.
  32. V.C.G. Dos Santos, A. de Pádua Andrade Salvado, D.C. Dragunski, D.N. Clausen, C.R.T. Tarley, J. Caetano, Highly improved chromium(III) uptake capacity in modified sugarcane bagasse using different chemical treatments, Quim. Nova, 35 (2012) 1606–1611.
  33. A.Y. Dursun, A comparative study on determination of the equilibrium, kinetic and thermodynamic parameters of biosorption of copper(II) and lead(II) ions onto pretreated Aspergillus niger, Biochem. Eng. J., 28 (2006) 187–195.
  34. I. Langmuir, The adsorption of gases on plane surfaces of glass, mica and platinum, J. Am. Chem. Soc., 40 (1918) 1361–1403.
  35. H.M.F.U. Freundlich, Die Adsorption in Losungen, Z. fur. Physikal. Chem., 57 (1906) 385–470.
  36. K.R. Hall, L.C. Eagletonm, A. Acrivos, T. Vermeulen, Poreand solid-diffusion kinetics in fixed-bed adsorption under constant-pattern conditions, Ind. Eng. Chem. Fundam., 5 (1966) 212–223.
  37. M. Hua, S. Zhang, B. Pan, W. Zhang, L. Lv, Q. Zhang, Heavy metal removal from water/wastewater by nanosized metal oxides: a review, J. Hazard. Mater., 15 (2012) 211–212: 317–331.
  38. D. Božić, M. Gorgievski, V. Stanković, N. Štrbac, S. Šerbula, N. Petrović, Adsorption of heavy metal ions by beech sawdust – kinetics, mechanism and equilibrium of the process, Ecol. Eng., 58 (2013) 202–206.
  39. Y.S. Ho, J.C.Y. Ng, G. McKay, Kinetics of pollutant sorption by biosorbents: review, Sep. Purif. Methods, 29 (2000) 189–232.
  40. J. Kong, Q. Yue, S. Sun, B. Gao, Y. Kan, Q. Li, Y. Wang, Adsorption of Pb(II) from aqueous solution using keratin waste–hide waste: equilibrium, kinetic and thermodynamic modeling studies, Chem. Eng. J., 241 (2014) 393–400.
  41. S. Parlayicim, E. Pehlivan, Comparative study of Cr(VI) removal by bio-waste adsorbents: equilibrium, kinetics, and thermodynamic, J. Anal. Sci. Technol., 10 (2019) 15, doi: 10.1186/s40543-019-0175-3.
  42. Z. Droussi, V. D’Orazio, M.R. Provenzano, M. Hafidi, A. Ouatmane, Study of the biodegradation and transformation of olive-mill residues during composting using FTIR spectroscopy and differential scanning calorimetry, J. Hazard. Mater., 164 (2009) 1281–1285.
  43. R. Shan, Y. Shi, J. Gu, Y. Wang, H. Yuan, Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems, Chin. J. Chem. Eng., 28 (2020) 1375–1383.
  44. F. Albert Cotton, J. Takats, Structure of triphenylphosphine-(pentahaptocyclopentadienyl) copper(I), J. Am. Chem. Soc., 92 (1970) 2353–2358.