1. H. Zou, E. Hu, S. Yang, L. Gong, F. He, Chromium(VI) removal by mechanochemically a sulfidated zero valent iron and its effect on dechlorination of trichloroethene as a co-contaminant, Sci. Total Environ., 650 (2019) 419–426.
  2. M.J. Scoullos, G.H. Vonkeman, I. Thornton, Z. Makuch, Mercury-Cadmium-Lead: Handbook for Sustainable Heavy Metals Policy and Regulation, Kluwer Academic Publishers, Dordrecht, the Netherlands, 2001.
  3. Buhani, Narsito, Nuryono, E.S. Kunarti, Production of metal ion imprinted polymer from mercapto-silica through solgel process as selective adsorbent of cadmium, Desalination, 251 (2010) 83–89.
  4. I. Ali, V.K. Gupta, Advances in water treatment by adsorption technology, Nat. Protoc., 1 (2007) 2661–2667.
  5. Buhani, Musrifatun, D.S. Pratama, Suharso, Rinawati, Modification of Chaetoceros sp. biomass with silica-magnetite coating and adsorption studies towards Cu(II) ions in single and binary system, Asian J. Chem., 29 (2017) 2734–2738.
  6. V. Kårelid, G. Larsson, B. Björlenius, Pilot-scale removal of pharmaceuticals in municipal wastewater: comparison of granular and powdered activated carbon treatment at three wastewater treatment plants, J. Environ. Manage., 193 (2017) 491–502.
  7. Buhani, F. Hariyanti, Suharso, Rinawati, Sumadi, Magnetized algae-silica hybrid from Porphyridium sp. biomass with Fe3O4 particle and its application as adsorbent for the removal of methylene blue from aqueous solution, Desal. Water Treat., 142 (2019) 331–340.
  8. U.A. Guler, M. Sarioglu, Mono and binary component biosorption of Cu(II), Ni(II), and methylene blue onto raw and pretreated S. cerevisiae: equilibrium and kinetics, Desal. Water Treat., 52 (2014) 4871–4888.
  9. O. Duman, E. Ayranci, Attachment of benzo-crown ethers onto activated carbon cloth to enhance the removal of chromium, cobalt and nickel ions from aqueous solutions by adsorption, J. Hazard. Mater., 176 (2010) 231–238.
  10. O. Duman, E. Ayranci, Adsorptive removal of cationic surfactants from aqueous solutions onto high-area activated carbon cloth monitored by in situ UV spectroscopy, J. Hazard. Mater., 174 (2010) 359–367.
  11. O. Duman, S. Tunç, B.K. Bozoglan, T.G. Polat, Removal of triphenylmethane and reactive azo dyes from aqueous solution by magnetic carbon nanotube-κ-carrageenan-Fe3O4 nanocomposite, J. Alloys Compd., 687 (2016) 370–383.
  12. L. Qimeng, Q. Yanshan, G. Canzhu, Chemical regeneration of spent powdered activated carbon used in decolorization of sodium salicylate for the pharmaceutical industry, J. Cleaner Prod., 86 (2015) 424–431.
  13. K.T. Wong, N.C. Eu, S. Ibrahim, H. Kim, Y. Yoon, M. Jang, Recyclable magnetite-loaded palm shell-waste based activated carbon for the effective removal of methylene blue from aqueous solution, J. Cleaner Prod., 115 (2016) 337–342.
  14. S.H. Araghi, M.H. Entezari, Amino-functionalized silica magnetite nanoparticles for the simultaneous removal of pollutants from aqueous solution, Appl. Surf. Sci., 333 (2015) 68–77.
  15. T.S. Anirudhan, F. Shainy, Adsorption behaviour of 2-mercaptobenzamide modified itaconic acid-grafted-magnetite nanocellulose composite for cadmium(II) from aqueous solutions, J. Ind. Eng. Chem., 32 (2015) 157–166.
  16. M.H.P. Wondracek, A.O. Jorgetto, A.C.P. Silva, J.R. Ivassechen, J.F. Schneider, M.J. Saeki, V.A. Pedrosa, W.K. Yoshito, F. Colauto, W.A. Ortiz, G.R. Castro, Synthesis of mesoporous silica-coated magnetic nanoparticles modified with 4-amino- 3-hydrazino-5-mercapto-1,2,4-triazole and its application as Cu(II) adsorbent from aqueous samples, Appl. Surf. Sci., 367 (2016) 533–541.
  17. I. Mohmood, C.B. Lopes, I. Lopes, D.S. Tavares, A.M.V.M Soares, A.C. Duarte, T. Trindade, I. Ahmad, E. Pereira, Remediation of mercury contaminated saltwater with functionalized silica coated magnetite nanoparticles, Sci. Total Environ., 557–558 (2016) 712–721.
  18. O. Duman, C. Özcan, T.G. Polat, S. Tunç, Carbon nanotubebased magnetic and non-magnetic adsorbents for the highefficiency removal of diquat dibromide herbicide from water: OMWCNT, OMWCNT-Fe3O4 and OMWCNT-κ-carrageenan-Fe3O4 nanocomposites, Environ. Pollut., 244 (2019) 723–732.
  19. O. Duman, S. Tunç, T.G. Polat, B.K. Bozoğlan, Synthesis of magnetic oxidized multiwalled carbon nanotube-κ-carrageenan-Fe3O4 nanocomposite adsorbent and its application in cationic Methylene Blue dye adsorption, Carbohydr. Polym., 147 (2016) 79–88.
  20. Q. Zhang, T. Lu, D.M. Bai, D.Q. Lin, S.J. Yao, Self-immobilization of a magnetic biosorbent and magnetic induction heated dye adsorption processes, Chem. Eng. J., 284 (2016) 972–979.
  21. H. Wang, Y. Liu, J. Ifthikar, L. Shi, A. Khan, Z. Chen, Towards a better understanding on mercury adsorption by magnetic bio-adsorbents with γ-Fe2O3 from pinewood sawdust derived hydrochar: Influence of atmosphere in heat treatment, Bioresour. Technol., 256 (2018) 269–276.
  22. D. Sud, G. Mahajan, M.P. Kaur, Agricultural waste material as potential adsorbent for sequestering heavy metal ions from aqueous solutions - a review, Bioresour. Technol., 99 (2008) 6017–6027.
  23. D. Mohan, A. Sarswat, V.K. Singh, M. Alexandre-Franco, C.U. Pittman Jr, Development of magnetic activated carbon from almond shells for trinitrophenol removal from water, Chem. Eng. J., 172 (2011) 1111–1125.
  24. M.M. Montazer-Rahmati, P. Rabbani, A. Abdolali, A.R. Keshtkar, Kinetics and equilibrium studies on biosorption of cadmium, lead, and nickel ions from aqueous solutions by intact and chemically modified brown algae, J. Hazard. Mater., 185 (2011) 401–407.
  25. N. Chen, Z. Zhang, C. Feng, M. Li, D. Zhu, N. Sugiura, Studies on fluoride adsorption of iron-impregnated granular ceramics from aqueous solution, Mater. Chem. Phys., 125 (2011) 293–298.
  26. Z. Chen, M. Ma, M. Han, Biosorption of nickel and copper onto treated alga (Undaria pinnatifida): application of isotherm and kinetic models, J. Hazard. Mater., 155 (2008) 327–333.
  27. S.J. Mousavi, M. Parvini, M. Ghorbani, Adsorption of heavy metals (Cu2+ and Zn2+) on novel bifunctional ordered mesoporous silica: optimization by response surface methodology, J. Taiwan Inst. Chem. Eng., 84 (2018) 123–141.
  28. J. Georgin, G.L. Dotto, M.A. Mazutti, E.L. Foletto, Preparation of activated carbon from peanut shell by conventional pyrolysis and microwave irradiation-pyrolysis to remove organic dyes from aqueous solutions, J. Environ. Chem. Eng., 4 (2016) 266–275.
  29. S. Naeimi, H. Faghihian, Performance of novel adsorbent prepared by magnetic metal-organic framework (MOF) modified by potassium nickel hexacyanoferrate for removal of Cs+ from aqueous solution, Sep. Purif. Technol., 175 (2017) 255–265.
  30. H.P.S. Abdul-Khalil, M. Jawaid, P. Firoozian, U. Rashid, A. Islam, H. Akil, Activated carbon from various agricultural wastes by chemical activation with KOH: preparation and characterization, J. Biobased Mater. Bioenergy, 7 (2013) 1–7.
  31. Buhani, Suharso, F. Luziana, M. Rilyanti, Sumadi, Production of adsorbent from activated carbon of palm oil shells coated by Fe3O4 particle to remove crystal violet in water, Desal. Water Treat., 171 (2019) 281–293.
  32. Y. Lin, H. Chen, K. Lin, B. Chen, C. Chiou, Application of magnetic modified with amino groups to adsorb copper ion in aqueous solution, J. Environ. Sci., 23 (2011) 44–50.
  33. V.K. Gupta, A. Rastogi, Biosorption of lead from aqueous solution by green algae Spirogyra species: kinetics and equilibrium studies, J. Hazard. Mater., 152 (2008) 407–414.
  34. A.H. AbdEl-Salam, H.A. Ewais, A.S. Basaleh, Silver nanoparticles immobilized on the activated carbon as efficient adsorbent for removal of crystal violet dye from aqueous solutions. A kinetic study, J. Mol. Liq., 248 (2017) 833–841.
  35. A.M. Aljeboree, A.F. Alkaim, A.H. Al-Dujaili, Adsorption isotherm, kinetic modeling and thermodynamics of crystal violet dye on coconut husk-based activated carbon, Desal. Water Treat., 53 (2015) 3656–3667.
  36. J. Gong, T. Liu, X. Wang, X. Hu, L. Zhang, Efficient removal of heavy metal ions from aqueous systems with the assembly of anisotropic layered double hydroxide nanocrystals@carbon nanosphere, Environ. Sci. Technol., 45 (2011) 6181–6187.
  37. T. Hou, L. Yan, J. Li, Y. Yang, L. Shan, X. Meng, X. Li, Y. Zhao, Adsorption performance and mechanistic study of heavy metals by facile synthesized magnetic layered double oxide/carbon composite from spent adsorbent, Chem. Eng., 384 (2020) 123331.
  38. E. Ayranci, O. Duman, Structural effects on the interactions of benzene and naphthalene sulfonates with activated carbon cloth during adsorption from aqueous solutions, Chem. Eng. J., 156 (2010) 70–76.
  39. O. Duman, S. Tunç, T.G. Polat, Determination of adsorptive properties of expanded vermiculite for the removal of CI Basic Red 9 from aqueous solution: kinetic, isotherm and thermodynamic studies, Appl. Clay Sci., 109 (2015) 22–32.
  40. K.P. Singh, S. Gupta, A.K. Singh, S. Sinha, Optimizing adsorption of crystal violet dye from water by magnetic nanocomposite using response surface modeling approach, J. Hazard. Mater., 186 (2011) 1462–1473.
  41. M. Achak, A. Hafidi, N. Ouazzani, S. Sayadi, L. Mandi, Low cost biosorbent “banana peel” for the removal of phenolic compounds from olive mill wastewater: kinetic and equilibrium studies, J. Hazard. Mater., 166 (2009) 117–125.
  42. Buhani, M. Puspitarini, Rahmawaty, Suharso, M. Rilyanti, Sumadi, Adsorption of phenol and methylene blue in solution by oil palm shell activated carbon prepared by chemical activation, Orient. J. Chem., 34 (2018) 2043–2050.
  43. Y.D. Liang, Y.J. He, T.T. Wang, L.H. Lei, Adsorptive removal of gentian violet from aqueous solution using CoFe2O4/activated carbon magnetic composite, J. Water Process. Eng., 27 (2019) 77–88.
  44. M. Dogan, H. Abak, M. Alkan, Adsorption of methylene blue onto hazelnut shell: kinetics, mechanism and activation parameters, J. Hazard. Mater., 164 (2009) 172–181.
  45. N.A. Oladoja, A.K. Akinlabi, Congo red biosorption on palm kernel seed coat, Ind. Eng. Chem. Res., 48 (2009) 6188–6196.
  46. X. Xin, Q. Wei, J. Yang, L. Yan, R. Feng, G. Chen, B. Du, H. Li, Highly efficient removal of heavy metal ions by aminefunctionalized mesoporous Fe3O4 nanoparticles, Chem. Eng. J., 184 (2012) 132–140.
  47. I. Larraza, M. Lŏpez-Gŏnzales, T. Corrales, G. Marcelo, Hybrid materials: Magnetite-ployethyenimine-montromolillonite, as magnetic adsorbents for Cr (VI) water treatment, J. Colloid Interface Sci., 385 (2012) 24–33.
  48. Y. Shao, L. Zhou, C. Bao, J. Ma, M. Liu, F. Wang, Magnetic responsive metal–organic frameworks nanosphere with core–shell structure for highly efficient removal of methylene blue, Chem. Eng. J., 283 (2016) 1127–1136.
  49. Y.S. Ho, J.F. Porter, G. McKay, Equilibrium isotherm studies for the sorption of divalent metal ions onto peat: copper, nickel, and lead single component systems, Water Air Soil Pollut., 141 (2002) 1–33.
  50. O. Duman, E. Ayranci, Structural and ionization effects on the adsorption behaviors of some anilinic compounds from aqueous solution onto high-area carbon-cloth, J. Hazard. Mater., 120 (2005) 173–181.
  51. O. Duman, E. Ayranci, Adsorption characteristics of benzaldehyde, sulphanilic acid, and p‐phenolsulfonate from water, acid, or base solutions onto activated carbon cloth, Sep. Sci. Technol., 41 (2006) 3673–3692.
  52. E. Ayranci, O. Duman, Adsorption behaviors of some phenolic compounds onto high specific area activated carbon cloth, J. Hazard. Mater., 124 (2005) 125–132.
  53. S. Hamidzadeh, M. Torabbeigi, S.J. Shahtaheri, Removal of crystal violet from water by magnetically modified activated carbon and nanomagnetic iron oxide, J. Environ. Health Sci. Eng., 13 (2015) 1–7.
  54. Buhani, Suharso, H. Satria, Hybridization of Nannochloropsis sp. biomass-silica through sol-gel process to adsorb Cd(II) ion in aqueous solutions, Eur. J. Sci. Res., 51 (2011) 467–476.
  55. U. Farooq, M.A. Khan, M. Athar, J.A. Kozinski, Effect of modification of environmentally friendly biosorbent wheat (Triticum aestivum) on the biosorptive removal of cadmium(II) ions from aqueous solution, Chem. Eng. J., 171 (2011) 400–410.
  56. T.M. Alslaibi, I. Abustan, M.A. Ahmad, A.A. Foul, Cadmium removal from aqueous solution using microwaved olive stone activated carbon, J. Environ. Chem. Eng., 1 (2013) 589–599.
  57. R. Sitko, P. Janik, B. Zawisza, E. Talik, E. Margui, I. Queralt, Green approach for ultratrace determination of divalent metal ions and arsenic species using total-reflection X-ray fluorescence spectrometry and mercapto-modified graphene oxide nanosheets as a novel adsorbent, Anal. Chem., 87 (2015) 3535–3542.
  58. Z.L. Du, T. Zheng, P. Wang, L.L. Hao, Y.X. Wang, Fast microwave-assisted preparation of a low-cost and recyclable carboxyl modified lignocellulose-biomass jute fiber for enhanced heavy metal removal from water, Bioresour. Technol., 201 (2016) 41–49.
  59. H.Y. Choi, J.H. Bae, Y. Hasegawa, S. An, I.S. Kim, H. Lee, M. Kim, Thiol-functionalized cellulose nanofiber membranes for the effective adsorption of heavy metal ions in water, Carbohydr. Polym., 234 (2020) 115881.
  60. B.L. Zhang, W. Qiu, P.P. Wang, Y.L. Liu, J. Zou, L. Wang, J. Ma, Mechanism study about the adsorption of Pb(II) and Cd(II) with iron-trimesic metal–organic frameworks, Chem. Eng. J., 385 (2020) 123507.
  61. H. Liu, X. Wang, G. Zhai, J. Zhang, C. Zhang, B. Nan, C. Cheng, Preparation of activated carbon from lotus stalks with the mixture of phosphoric acid and pentaerythritol impregnation and its application for Ni(II) sorption, Chem. Eng. J., 209 (2012) 155–162.