1. Y.B. Zhou, J. Lu, Y. Zhou, Y.D. Liu, Recent advances for dyes removal using novel adsorbents: a review, Environ. Pollut., 252 (2019) 352–365.
  2. S. Zwane, M.L. Masheane, A.T. Kuvarega, G.D. Vilakati, B.B. Mamba, H. Nyoni, S.D. Mhlanga, D.S. Dlamini, Polyethersulfone/Chromolaena odorata (PES/CO) adsorptive membranes for removal of Congo red from water, J. Water Process Eng., 30 (2019) 100498, jwpe.2017.09.013.
  3. C.M. da Silva Burigato Costa, L. da Silva Marques, A.K. Almeida, I.R. Leite, I.K. de Almeida, Applicability of water quality models around the world—a review, Environ. Sci. Pollut. Res., 26 (2019) 36141–36162.
  4. R.P. Han, D.D. Ding, Y.F. Xu, W.H. Zou, Y.F. Wang, Y.F. Li, L.N. Zou, Use of rice husk for the adsorption of Congo red from aqueous solution in column mode, Bioresour. Technol., 99 (2008) 2938–2946.
  5. F. Gimbert, N. Morin-Crini, F. Renault, P.-M. Badot, G. Crini, Adsorption isotherm models for dye removal by cationized starch-based material in a single component system: error analysis, J. Hazard. Mater., 157 (2008) 34–46.
  6. S.S. Chen, K. Wen, X.T. Zhang, R.Z. Zhang, R.P. Han, Adsorption of neutral red onto MIL-100(Fe) from solution: characterization, equilibrium, kinetics, thermodynamics and process design, Desal. Water Treat., 177 (2020) 197–208.
  7. Y. Shang, J.H. Zhang, X. Wang, R.D. Zhang, W. Xiao, S.S. Zhang, R.P. Han, Use of polyethylenimine-modified wheat straw for adsorption of Congo red from solution in batch mode, Desal. Water Treat., 57 (2016) 8872–8883.
  8. C.X. Zhu, Y.X. Xia, Y.Y. Zai, Y.Q. Dai, X.Y. Liu, J. Bian, Y. Liu, J.S. Liu, J.S. Liu, G.Y. Li, Adsorption and desorption behaviors of HPEI and thermoresponsive HPEI based gels on anionic and cationic dyes, Chem. Eng. J., 369 (2019) 863–873.
  9. K. Grace Pavithra, P. Senthil Kumar, V. Jaikumar, P. Sundar Rajan, Removal of colorants from wastewater: a review on sources and treatment strategies, J. Ind. Eng. Chem., 75 (2019) 1–19.
  10. S. Dawood, T.K. Sen, Removal of anionic dye Congo red from aqueous solution by raw pine and acid-treated pine cone powder as adsorbent: equilibrium, thermodynamic, kinetics, mechanism and process design, Water Res., 46 (2012) 1933–1946.
  11. G. Crini, E. Lichtfouse, Advantages and disadvantages of techniques used for wastewater treatment, Environ. Chem. Lett., 17 (2018) 145–155.
  12. M.N. Khan, O. Bashir, T.A. Khan, S.A. AL-Thabaiti, Z. Khan, CTAB capped synthesis of bio-conjugated silver nanoparticles and their enhanced catalytic activities, J. Mol. Liq., 258 (2018) 133–141.
  13. O. Bashir, M.N. Khan, T.A. Khan, Z. Khan, S.A. AL-Thabaiti, Influence of stabilizing agents on the microstructure of co-nanoparticles for removal of Congo red, Environ. Technol. Innovation, 8 (2017) 327–342.
  14. F.M. Mpatani, A.A. Aryee, A.N. Kani, Q.H. Guo, E. Dovi, L.B. Qu, Z.H. Li, R.P. Han, Uptake of micropollutantbisphenol A, methylene blue and neutral red onto a novel bagasse-β-cyclodextrin polymer by adsorption process, Chemosphere, 259 (2020) 127439, chemosphere.2020.127439.
  15. A.A. Aryee, F.M. Mpatani, A.N. Kani, E. Dovi, R.P. Han, Z.H. Li, L.B. Qu, Iminodiacetic acid functionalized magnetic peanut husk for the removal of methylene blue from solution: characterization and equilibrium studies, Environ. Sci. Pollut. Res., 27 (2020) 40316–40330.
  16. C. Liao, X.-R. Zhao, X.-Y. Jiang, J. Teng, J.-G. Yu, Hydrothermal fabrication of novel three-dimensional graphene oxide-pentaerythritol composites with abundant oxygencontaining groups as efficient adsorbents, Microchem. J., 152 (2020) 104288,
  17. A.T. Ojedokun, O.S. Bello, Kinetic modeling of liquid-phase adsorption of Congo red dye using guava leaf-based activated carbon, Appl. Water Sci., 7 (2017) 1965–1977.
  18. R. Ahmad, R. Kumar, Adsorptive removal of Congo red dye from aqueous solution using bael shell carbon, Appl. Surf. Sci., 257 (2010) 1628–1633.
  19. K. Wen, Y. Li, S.X. Zhang, X.T. Zhang, R.P. Han, Adsorption of Congo red from solution by iron doped PVA-chitosan composite film, Desal. Water Treat., 187 (2020) 378–389.
  20. M.M. Yang, X.Y. Li, W.L. Wang, S.S. Zhang, R.P. Han, Adsorption of methyl blue from solution by carboxylic multi-walled carbon nanotubes in batch mode, Desal. Water Treat., 159 (2019) 365–376.
  21. Y.F. Gu, M.M. Yang, W.L. Wang, R.P. Han, Phosphate adsorption from solution by zirconium-loaded carbon nanotubes in batch mode, J. Chem. Eng. Data, 64 (2019) 2849–2858.
  22. C.D. Qi, H.Z. Chen, C.M. Xu, Z. Xu, H.B. Chen, S.G. Yang, S.Y. Li, H. He, C. Sun, Synthesis and application of magnetic materials-barium ferrite nanomaterial as an effective microwave catalyst for degradation of brilliant green, Chemosphere, 260 (2020) 127681, chemosphere.2020.127681.
  23. H.X. Lyu, K. Hu, J.S. Fan, Y.X.F. Ling, Z.H. Xie, J.X. Li, 3D hierarchical layered double hydroxide/carbon spheres composite with hollow structure for high adsorption of dye, Appl. Surf. Sci., 500 (2020) 144037, apsusc.2019.144037.
  24. X.C. Yan, X.P. Zhang, Q. Li, Preparation and characterization of CS/β-CD/Nano-ZnO composite porous membrane optimized by Box-Behnken for the adsorption of Congo red, Environ. Sci. Pollut. Res., 25 (2018) 22244–22258.
  25. Y. Ma, B.W. Zhang, H.J. Ma, M. Yu, L.F. Li, J.Y. Li, Polyethylenimine nanofibrous adsorbent for highly effective removal of anionic dyes from aqueous solution, Sci. China Mater., 59 (2016) 38–50.
  26. A.A. Aryee, F.M. Mpatani, X.T. Zhang, A.N. Kani, E. Dovi, R.P. Han, Z.H. Li, L.B. Qu, Iron(III) and iminodiacetic acid functionalized magnetic peanut husk for the removal of phosphate from solution: characterization, kinetic and equilibrium studies, J. Cleaner Prod., 268 (2020) 122191, https://
  27. F.M. Mpatani, A.A. Aryee, A.N. Kani, K. Wen, E. Dovi, L.B. Qu, Z.H. li, R.P. Han, Removal of methylene blue from aqueous medium by citrate modified bagasse: kinetic, equilibrium and thermodynamic study, Bioresour. Technol. Rep., 11 (2020) 100463,
  28. A.N. Kani, E. Dovi, F.M. Mpatani, Z.H. Li, R.P. Han, L.B. Qu, Tiger nut residue as a renewable adsorbent for methylene blue removal from solution: adsorption kinetics, isotherm, and thermodynamic studies, Desal. Water Treat., 191 (2020) 426–437.
  29. M.R. Oliveira, M.M. Oliveira, R.J. Oliveira, A. Dervanoski, E. Franceschi, S.M. Egues, J.F. de Conto, Amine-modified silica surface applied as adsorbent in the phenol adsorption assisted by ultrasound, Chem. Eng. Commun., 206 (2019) 1554–1569.
  30. M. Kousha, E. Daneshvar, M.S. Sohrabi, M. Jokar, A. Bhatnagar, Adsorption of acid orange II dye by raw and chemically modified brown macroalga Stoechospermum marginatum, Chem. Eng. J., 192 (2012) 67–76.
  31. S.T. Ong, C.K. Lee, Z. Zainal, Removal of basic and reactive dyes using ethylenediamine modified rice hull, Bioresour. Technol., 98 (2007) 2792–2799.
  32. Z.W. Wang, P. Han, Y.B. Jiao, D. Ma, C.C. Dou, R.P. Han, Adsorption of Congo red using ethylenediamine modified wheat straw, Desal. Water Treat., 30 (2011) 195–206
  33. M.S. Sajab, C.H. Chia, S. Zakaria, P.S. Khiew, Cationic and anionic modifications of oil palm empty fruit bunch fibers for the removal of dyes from aqueous solutions, Bioresour. Technol., 128 (2013) 571–577.
  34. Y.H. Li, H.X. Zhu, C.Z. Zhang, M.X. Cheng, H. He, PEI-grafted magnetic cellulose for Cr(VI) removal from aqueous solution, Cellulose, 25 (2018) 4757–4769.
  35. J.L. Wang, C. Chen, Biosorbents for heavy metals removal and their future, Biotechnol. Adv., 27 (2009) 195–226.
  36. J.J. Dong, Y.Y. Du, R.S. Duyu, Y. Shang, S.S. Zhang, R.P. Han, Adsorption of copper ion from solution by polyethylenimine modified wheat straw, Bioresour. Technol. Rep., 6 (2019) 96–102.
  37. S.B. Deng, Y.-P. Ting, Characterization of PEI-modified biomass and biosorption of Cu(II), Pb(II) and Ni(II), Water Res., 39 (2005) 2167–2177.
  38. X. Xu, B.Y. Gao, B. Jin, Q.Y. Yue, Removal of anionic pollutants from liquids by biomass materials: a review, J. Mol. Liq., 215 (2016) 565–595.
  39. L. Meili, P.V.S. Lins, M.T. Costa, R.L. Almeida, A.K.S. Abud, J.I. Soletti, G.L. Dotto, E.H. Tanabe, L. Sellaoui, S.H.V. Carvalho, A. Erto, Adsorption of methylene blue on agro-industrial wastes: experimental investigation and phenomenological modelling, Prog. Biophys. Mol. Biol., 141 (2019) 60–71.
  40. S.B. Deng, Y.P. Ting, Polyethylenimine-modified fungal biomass as a high-capacity biosorbent for Cr(VI) anions: sorption capacity and uptake mechanisms, Environ. Sci. Technol., 39 (2005) 8490–8496.
  41. R. Kumar, J. Rashid, M.A. Barakat, Synthesis and characterization of a starch-AlOOH-FeS2 nanocomposite for the adsorption of Congo red dye from aqueous solution, RSC Adv., 4 (2014) 38334–38340.
  42. S. Rongpipi, D. Ye, E.D. Gomez, E.W. Gomez, Progress and opportunities in the characterization of cellulose - an important regulator of cell wall growth and mechanics, Front. Plant Sci., 9 (2019) 1–28.
  43. R.D. Zhang, J.H. Zhang, X.N. Zhang, C.C. Dou, R.P. Han, Adsorption of Congo red from aqueous solutions using cationic surfactant modified wheat straw in batch mode: kinetic and equilibrium study, J. Taiwan Inst. Chem. Eng., 45 (2014) 2578–2583.
  44. M.C.S. Reddy, L. Sivaramakrishna, A.V. Reddy, The use of an agricultural waste material, Jujuba seeds for the removal of anionic dye (Congo red) from aqueous medium, J. Hazard. Mater., 203–204 (2012) 118–127.
  45. M.A.M. Salleh, D.K. Mahmoud, W.A.W.A. Karim, A. Idris, Cationic and anionic dye adsorption by agricultural solid wastes: a comprehensive review, Desalination, 280 (2011) 1–13.
  46. R. Kumar, R.Kr. Sharma, A.P. Singh, Removal of organic dyes and metal ions by cross-linked graft copolymers of cellulose obtained from the agricultural residue, J. Environ. Chem. Eng., 6 (2018) 6037–6048.
  47. G. Bayramoglu, M.Y. Arica, Adsorption of Congo red dye by native amine and carboxyl modified biomass of Funalia trogii: isotherms, kinetics and thermodynamics mechanisms, Korean J. Chem. Eng., 35 (2018) 1303–1311.
  48. J.-X. Yu, W.-L. Xiong, J. Zhu, J.-D. Chen, R.-A. Chi, Removal of Congo red from aqueous solution by adsorption onto different amine compounds modified sugarcane bagasse, Clean Technol. Environ. Policy, 19 (2017) 517–525.
  49. M. Butnariu, P. Negrea, L. Lupa, M. Ciopec, A. Negrea, M. Pentea, I. Sarac, I. Samfira, Remediation of rare earth element pollutants by sorption process using organic natural sorbents, Int. J. Environ. Res. Public Health, 12 (2015) 11278–11287.
  50. N. Belachew, G. Bekele, Synergy of magnetite intercalated bentonite for enhanced adsorption of Congo red dye, Silicon, 12 (2020) 603–612.
  51. A.J. Jadhav, V.C. Srivastava, Multicomponent adsorption isotherm modeling using thermodynamically inconsistent and consistent models, AIChE J., 65 (2019) e16727, https://doi. org/10.1002/aic.16727.
  52. T. Zhou, W.Z. Lu, L.F. Liu, H.M. Zhu, Y.B. Jiao, S.S. Zhang, R.P. Han, Effective adsorption of light green anionic dye from solution by CPB modified peanut in column mode, J. Mol. Liq., 211 (2015) 909–914.
  53. B.L. Zhao, W. Xiao, Y. Shang, H.M. Zhu, R.P. Han, Adsorption of light green anionic dye using cationic surfactant-modified peanut husk in batch mode, Arabian J. Chem., 10 (2017) S3595–S3602.
  54. Y.Y. Hu, R.P. Han, Selective and efficient removal of anionic dyes from solution by zirconium(IV) hydroxide-coated magnetic materials, J. Chem. Eng. Data, 64 (2019) 791–799.
  55. M.C.S. Reddy, Removal of direct dye from aqueous solutions with an adsorbent made from tamarind fruit shell, an agricultural solid waste, J. Sci. Ind. Res. (India), 65 (2006) 443–446.
  56. M.Y. Liu, X.T. Zhang, Z.H. Li, L.B. Qu, R.P. Han, Fabrication of zirconium (IV)-loaded chitosan/Fe3O4/graphene oxide for efficient removal of alizarin red from aqueous solution, Carbohydr. Polym., 248 (2020) 116792, carbpol.2020.116792.