1. S.-H. Liu, G.-M. Zeng, Q.-Y. Niu, Y. Liu, L. Zhou, L.-H. Jiang, X.-F. Tan, P. Xu, C. Zhang, M. Cheng, Bioremediation mechanisms of combined pollution of PAHs and heavy metals by bacteria and fungi: a mini review, Bioresour. Technol., 224 (2017) 25–33.
  2. S.M. Aghili, N. Mehrdadi, M.A. Zazouli, B. Aminzadeh, Heavy metal concentrations in dewatered sludge of wastewater treatment plant in Sari, Iran, J. Mazandaran Univ. Med. Sci., 28 (2019) 152–159.
  3. S. Tasharrofi, S.S. Hassani, H. Taghdisian, Z. Sobat, Chapter 24 – Environmentally Friendly Stabilized nZVI-Composite for Removal of Heavy Metals, C.M. Hussain, A.K. Mishra, Eds., New Polymer Nanocomposites for Environmental Remediation, Elsevier, 2018, pp. 623–642.
  4. Z. Esvandi, R. Foroutan, M. Mirjalili, G.A. Sorial, B. Ramavandi, Physicochemical behavior of Penaeuse semisulcatuse chitin for Pb and Cd removal from aqueous environment, J. Polym. Environ., 27 (2019) 263–274.
  5. M. Shafiee, R. Foroutan, K. Fouladi, M. Ahmadlouydarab, B. Ramavandi, S. Sahebi, Application of oak powder/Fe3O4 magnetic composite in toxic metals removal from aqueous solutions, Adv. Powder Technol., 30 (2019) 544–554.
  6. S. Abbasi, R. Foroutan, H. Esmaeili, F. Esmaeilzadeh, Preparation of activated carbon from worn tires for removal of Cu(II), Ni(II) and Co(II) ions from synthetic wastewater, Desal. Water Treat., 141 (2019) 269–278.
  7. B. Dovlati, E. Naderi, H. Pirkharrati, Kh. Farhadi, Removal of chromium (Cr3+) and (Cr6+) from aqueous solutions using leonardite, J. Water Wastewater, 30 (2019) 91–102.
  8. M.A. Hashem, M.A. Momen, M. Hasan, M.S. Nur-A-Tomal, M.H. Sheikh, Chromium removal from tannery wastewater using Syzygium cumini bark adsorbent, Int. J. Environ. Sci. Technol., 16 (2019) 1395–1404.
  9. M. Sharma, J. Singh, S. Hazra, S. Basu, Adsorption of heavy metal ions by mesoporous ZnO and TiO2@ZnO monoliths: adsorption and kinetic studies, Microchem. J., 145 (2019) 105–112.
  10. S. Srivastava, S. Agrawal, M. Mondal, Biosorption isotherms and kinetics on removal of Cr(VI) using native and chemically modified Lagerstroemia speciosa bark, Ecol. Eng., 85 (2015) 56–66.
  11. S. Elabbas, L. Mandi, F. Berrekhis, M.N. Pons, J.P. Leclerc, N. Ouazzani, Removal of Cr(III) from chrome tanning wastewater by adsorption using two natural carbonaceous materials: eggshell and powdered marble, J. Environ. Manage., 166 (2016) 589–595.
  12. S. Gunatilake, Methods of removing heavy metals from industrial wastewater, J. Multidiscip. Eng. Sci. Stud., 1 (2015) 12–18.
  13. M. Haghighi, F. Rahmani, R. Dehghani, A.M. Tehrani, M.B. Miranzadeh, Photocatalytic reduction of Cr(VI) in aqueous solution over ZnO/HZSM-5 nanocomposite: optimization of ZnO loading and process conditions, Desal. Water Treat., 58 (2017) 168–180.
  14. F. Minas, B.S. Chandravanshi, S. Leta, Chemical precipitation method for chromium removal and its recovery from tannery wastewater in Ethiopia, Chem. Int., 3 (2017) 392–405.
  15. M.K.N. Mahmad, M.M.R. Rozainy, I. Abustan, N. Baharun, Electrocoagulation process by using aluminum and stainless steel electrodes to treat total chromium, color and turbidity, Procedia Chem., 19 (2016) 681–686.
  16. M. Jyothi, V. Nayak, M. Padaki, R.G. Balakrishna, K. Soontarapa, Eco-friendly membrane process and product development for complete elimination of chromium toxicity in wastewater, J. Hazard. Mater., 332 (2017) 112–123.
  17. G. Vilardi, J.M. Ochando-Pulido, N. Verdone, M. Stoller, L. Di Palma, On the removal of hexavalent chromium by olive stones coated by iron-based nanoparticles: equilibrium study and chromium recovery, J. Cleaner Prod., 190 (2018) 200–210.
  18. D.M. Angelucci, V. Stazi, A.J. Daugulis, M.C. Tomei, Treatment of synthetic tannery wastewater in a continuous two-phase partitioning bioreactor: biodegradation of the organic fraction and chromium separation, J. Cleaner Prod., 152 (2017) 321–329.
  19. M. Haghighi, F. Rahmani, F. Kariminejad, R.A. Sene, Photodegradation of lignin from pulp and paper mill effluent using TiO2/PS composite under UV-LED radiation: optimization, toxicity assessment and reusability study, Process. Saf. Environ. Prot., 122 (2019) 48–57.
  20. Z. Yousefi, J. Yazdani Cherati, M. Movahedi, F. Kariminejad, Effect of organic loading rate on the performance of anaerobic process in treatment of pulp and paper mill effluents, J. Mazandaran Univ. Med. Sci., 25 (2015) 136–150.
  21. M.R. Rahimzadeh, S. Kazemi, A.A. Moghadamnia, Cadmium toxicity and treatment: an update, Caspian J. Int. Med., 8 (2017) 135.
  22. S. Guiza, Biosorption of heavy metal from aqueous solution using cellulosic waste orange peel, Ecol. Eng., 99 (2017) 134–140.
  23. F. Kariminejad, Z. Yousefi, J.Y. Cherati, Evaluation of COD, color and lignin removal from pulp and paper effluent by anaerobic sludge biosorption, Int. J. Environ. Sci. Technol., 15 (2018) 719–732.
  24. A. Witek Krowiak, R.G. Szafran, S. Modelski, Biosorption of heavy metals from aqueous solutions onto peanut shell as a low-cost biosorbent, Desalination, 265 (2011) 126–134.
  25. A. Rezgui, Y. Hannachi, E. Guibal, T. Boubaker, Biosorption of zinc from aqueous solution by dried activated sludge biomass, Desal. Water Treat., 56 (2015) 2699–2705.
  26. H. Zare, H. Heydarzade, M. Rahimnejad, A. Tardast, M. Seyfi, Dried activated sludge as an appropriate biosorbent for removal of copper(II) ions, Arabian J. Chem., 8 (2015) 858–864.
  27. O. Gulnaz, A. Kaya, S. Dincer, The reuse of dried activated sludge for adsorption of reactive dye, J. Hazard. Mater., 134 (2006) 190–196.
  28. A. Maleki, A.H. Mahvi, M.A. Zazouli, H. Izanloo, A.H. Barati, Aqueous cadmium removal by adsorption on barley hull and barley hull ash, Asian J. Chem., 23 (2011) 1373–1376.
  29. M.A. Zazouli, P. Ebrahimi, M. Bagheri Ardebilian, Study of Cd(II) and Cr(VI) biosorption by mesocarps of orange and sour orange from aqueous solutions, Environ. Eng. Manage. J., 13 (2014) 345–351.
  30. H. Demey, T. Vincent, E. Guibal, A novel algal-based sorbent for heavy metal removal, Chem. Eng. J., 332 (2018) 582–595.
  31. Z. Rahman, L. Thomas, V.P. Singh, Biosorption of heavy metals by a lead (Pb) resistant bacterium, Staphylococcus hominis strain AMB‐2, J. Basic Microbiol., 59 (2019) 477–486.
  32. W. Boulaiche, B. Hamdi, M. Trari, Removal of heavy metals by chitin: equilibrium, kinetic and thermodynamic studies, Appl. Water Sci., 9 (2019) 39,
  33. B.P. Zhang, X.L. Han, P.J. Gu, S.Q. Fang, J. Bai, Response surface methodology approach for optimization of ciprofloxacin adsorption using activated carbon derived from the residue of desilicated rice husk, J. Mol. Liq., 238 (2017) 316–325.
  34. P. Javanmardi, A. Takdastan, R. Jalilzadeh, M.J. Mohammadi, Study the efficiency and effective factors on the application of clinoptilolite zeolite for removal of Zn from aqueous solutions, determination of the adsorption kinetics and isotherms, J. Environ. Health Eng., 4 (2016) 43–57.
  35. R. Foroutan, R. Mohammadi, A.S. Adeleye, S. Farjadfard, Z. Esvandi, H. Arfaeinia, G.A. Sorial, B. Ramavandi, S. Sahebi, Efficient arsenic(V) removal from contaminated water using natural clay and clay composite adsorbents, Environ. Sci. Pollut. Res., 26 (2019) 29748–29762.
  36. R. Foroutan, R. Mohammadi, N. Sohrabi, S. Sahebi, S. Farjadfard, Z. Esvandi, B. Ramavandi, Calcined alluvium of agricultural streams as a recyclable and cleaning tool for cationic dye removal from aqueous media, Environ. Technol. Innov., 17 (2020) 100530.
  37. M.M. Boushehrian, H. Esmaeili, R. Foroutan, Ultrasonic assisted synthesis of kaolin/CuFe2O4 nanocomposite for removing cationic dyes from aqueous media, J. Environ. Chem. Eng., 8 (2020) 103869.
  38. A. Farhan, K. Ong, W.W. Yunus, M. Jabit, A. Fitrianto, A. Hussin, A. Sulaiman, S. Jamal, J. Osman, C. Teoh, Kinetics study of nickel(II) ions sorption by thermally treated rice husk, Nat. Environ. Pollut. Technol., 16 (2017) 889.
  39. R. Foroutan, R. Mohammadi, S. Farjadfard, H. Esmaeili, B. Ramavandi, G.A. Sorial, Eggshell nano-particle potential for methyl violet and mercury ion removal: surface study and field application, Adv. Powder Technol., 30 (2019) 2188–2199.
  40. P. Delir Kheyrollahi Nezhad, M. Haghighi, F. Rahmani, CO2/O2-enhanced ethane dehydrogenation over a sol–gel synthesized Ni/ZrO2–MgO nanocatalyst: effects of Mgo, ZrO2, and NiO on the catalytic performance, Part. Sci. Technol., 36 (2018) 1017–1028.
  41. A. Talati, M. Haghighi, F. Rahmani, Oxidative dehydrogenation of ethane to ethylene by carbon dioxide over Cr/TiO2–ZrO2 nanocatalyst: effect of active phase and support composition on catalytic properties and performance, Adv. Powder Technol., 27 (2016) 1195–1206.
  42. F. Rahmani, M. Haghighi, One-pot hydrothermal synthesis of ZSM-5–CeO2 composite as a support for Cr-based nanocatalysts: influence of ceria loading and process conditions on CO2-enhanced dehydrogenation of ethane, RSC Adv., 6 (2016) 89551–89563.
  43. M. Roushani, Z. Saedi, Y.M. Baghelani, Removal of cadmium ions from aqueous solutions using TMU-16-NH2 metal organic framework, Environ. Nanotechnol. Monit. Manage., 7 (2017) 89–96.
  44. L. Ramrakhiani, A. Halder, A. Mandal, S. Majumdar, S. Ghosh, Toxic Metal Removal Using Biosorption Process and Inertization of Generated Hazardous Metal-Laden Biosorbent, S.K. Ghosh, Ed., Utilization and Management of Bioresources, Springer, Singapore, 2018, pp. 301–311.
  45. R. Shokohi, S.H. Sadeghi, K. Karimian, M.H. Saghi, Removal of acid cyanine 5R dye by surface biosorption process using dried activated sludge, J. Environ. Health Eng., 2 (2014) 108–118.
  46. E. Giarratano, M. Faleschini, C. Bruni, N.L. Olivera, M.N. Gil, Metal removal from wastewater using sludge from a natural stabilization pond as biosorbent, Int. J. Environ. Res., 13 (2019) 581–595.
  47. S. Hojati, A. Landi, Kinetic and thermodynamic studies of zinc removal from a metal-plating wastewater using Firouzkouh zeolite, J. Environ. Stud., 40 (2015) 901–912.
  48. R.M. Kulkarni, K. Vidya Shetty, G. Srinikethan, Kinetic and equilibrium modeling of biosorption of nickel(II) and cadmium(II) on brewery sludge, Water Sci. Technol., 79 (2019) 888–894.
  49. M. Samarghandi, S. Azizian, M. Shirzad Siboni, Removal of hexavalent chromium from aqueous solution by modified holly sawdust: a study of equilibrium and kinetics scientific, J. Hamadan Univ. Med. Sci., 16 (2010) 61–67.
  50. M. Malakootian, K. Yaghmaeian, R. Momenzadeh, Performance evaluation of adsorbent leca–modified (TiO2/LECA) for the removal of anionic surfactants from wastewater, J. Knowl. Health, 11 (2016) 41–48.
  51. J.S. He, J.P. Chen, A comprehensive review on biosorption of heavy metals by algal biomass: materials, performances, chemistry, and modeling simulation tools, Bioresour. Technol., 160 (2014) 67–780.
  52. A.T.A. Farhan, K.K. Ong, W.M.Z. WanYunus, M.L. Jabit, A.G.A. Fitrianto, A. Hussin, C.C. Teoh, Isotherm study of nickel(II) adsorption from aqueous solution using thermally treated rice husk, Asian J. Chem., 29 (2017) 589–591.
  53. M. Malakootian, N. Yousefi, H.N. Jaafarzadeh, Kinetics modeling and isotherms for adsorption of phosphate from aqueous solution by modified clinoptilolite, J. Water Wastewater, 4 (2011) 21–29.
  54. M. Farrokhi, M. Shirzad Siboni, S. Tajasosi, M. Naeimi Jobeini, Removal of hexavalent chromium Cr(VI) from aqueous solution using adsorption onto modified alder sawdust: a study of equilibrium and kinetics, J. Guilan Univ. Med. Sci., 23 (2014) 57–65.
  55. A. Rahmani, R. Noorozi, M.T. Samadi, M. Shirzad Siboni, Removal of hexavalent chromium from aqueous solution by using adsorption onto commerical iron powder study of equilibrium and kinetics scientific, J. Hamadan Univ. Med. Sci., 18 (2011) 33–39.
  56. M. Sahmoune, K. Louhab, A. Boukhiar, Biosorption of Cr(III) from aqueous solutions using bacterium biomass Streptomyces rimosus, Int. J. Environ. Res., 3 (2009) 229–238.
  57. E. Pajootan, M. Arami, N.M. Mahmoodi, Binary system dye removal by electrocoagulation from synthetic and real colored wastewaters, J. Taiwan Inst. Chem. Eng., 43 (2012) 283–290.
  58. R. Foroutan, S.J. Peighambardoust, R. Mohammadi, M. Omidvar, G.A. Sorial, B. Ramavandi, Influence of chitosan and magnetic iron nanoparticles on chromium adsorption behavior of natural clay: adaptive neuro-fuzzy inference modeling, Int. J. Biol. Macromol., 151 (2020) 355–365.
  59. A. Ahmadi, R. Foroutan, H. Esmaeili, S. Tamjidi, The role of bentonite clay and bentonite clay@MnFe2O4 composite and their physico-chemical properties on the removal of Cr(III) and Cr(VI) from aqueous media, Environ. Sci. Pollut. Res., 27 (2020) 14044–14057.
  60. Y. Abshirini, H. Esmaeili, R. Foroutan, Enhancement removal of Cr(VI) ion using magnetically modified MgO nanoparticles, Mater. Res. Express, 6 (2019) 125513.
  61. Y. Abshirini, R. Foroutan, H. Esmaeili, Cr(VI) removal from aqueous solution using activated carbon prepared from Ziziphus spina–christi leaf, Mater. Res. Express, 6 (2019) 045607.
  62. R. Foroutan, R. Zareipour, R. Mohammadi, Fast adsorption of chromium(VI) ions from synthetic sewage using bentonite and bentonite/bio-coal composite: a comparative study, Mater. Res. Express, 6 (2018) 025508.
  63. R. Foroutan, R. Mohammadi, B. Ramavandi, M. Bastanian, Removal characteristics of chromium by activated carbon/CoFe2O4 magnetic composite and Phoenix dactylifera stone carbon, Korean J. Chem. Eng., 35 (2018) 2207–22019.