1. A.H. Hawari, C.N. Mulligan, Heavy metals uptake mechanisms in a fixed bed column by calcium-treated anaerobic biomass, Process Biochem., 41 (2006) 187–198.
  2. F. Qin, B. Wen, X.Q. Shan, Y.N. Xie, T. Liu, S.Z. Zhang, S.U. Khan, Mechanisms of competitive adsorption of Pb, Cu, and Cd on peat, Environ. Pollut., 144 (2006) 669–680.
  3. WHO’s Guidelines for Drinking-water Quality, set up in Geneva, 1993.
  4. L. Canet, M. Ilpide, P. Seta, Efficient facilitated transport of lead, cadmium, zinc and silver across a flat sheet-supported liquid membrane mediated by lasalocid, Separ. Sci. Technol., 37 (2002) 1851–1860.
  5. G. Yan, T. Viraraghavan, Heavy metal removal in a biosorption column by immobilized M. Rouxii biomass, Bioresour Technol., 78 (2001) 243–249.
  6. K. Kadirvelu, K. Thamaraiselvi, C. Namasivayam, Removal of heavy metals from industrial waste waters by adsorption onto activated carbon prepared from an agricultural solid waste, Bioresour Technol., 76 (2001) 63–65.
  7. F. Ruggieri, A.A. D’Archivio, D. Di Camillo, L. Lozzi, M.A. Maggi, R. Mercorio, S. Santucci, Development of molecularly imprinted polymeric nano fibers by electro spinning and applications to pesticide adsorption, J. Separ. Sci., 38 (2015) 1402–1410.
  8. Y. Zhang, S. Yuan, X. Feng, H. Li, J. Zhou, B. Wang, Preparation of nano fibrous metal–organic framework filters for efficient air pollution control, J. Amer. Chem. Soc., 138 (2016) 5785–5788.
  9. C.K. Lee, K.S. Low, Removal of copper from solution using moss, Environ. Sci. Technol. Lett., 10 (1989) 395–404.
  10. W.T. Tan, S.T. Ooi, C.K. Lee, Removal of chromium (VI) from solution by coconut husk and palm pressed fibres, Environ. Technol., 14 (1993) 277–282.
  11. I. Saucedo, E. Guibal, C.H. Roulph, P. Cloirec, Sorption of uranyl ions by a modified chitosan: kinetic and equilibrium studies, Environ. Technol., 13 (1992) 1101–1105.
  12. E. Munaf, R. Zein, R. Kurniadi, I. Kurniadi, The use of rice husk for removal of toxic metals from waste water, Environ. Technol., 18 (1997) 359–362.
  13. T.W. Tee, A.R.M. Khan, Removal of lead, cadmium and zinc by waste tea leaves, Environ. Technol., 9 (1988) 1223–1232.
  14. H. Hasar, Y. Cuci, Removal of Cr (VI), Cd (II), and Cu (II) by using AC prepared from almond husk, Environ. Technol., 21 (2000) 1337–1342.
  15. S. Jenifer, M. Srihari, V. Shanmugam, M.H. Kalavathy, L.R. Miranda, Production of activated carbon from biomass residues, Int. J. Bioprocess Technol., 1 (2014) 1.
  16. J.N. Sahu, J. Acharya, B.K. Sahoo, B.C. Meikap, Optimization of lead (II) sorption potential using developed activated carbon from tamarind wood with chemical activation by zinc chloride Desal. Water Treat., 57 (2016) 2006–2017.
  17. K.N. Aboua, Y.A. Yobouet, K.B. Yao, D.L. Gone, A. Trokourey, Preparation of effective TiO2/Bi2O3 photo catalysts for water treatment, J. Environ. Manage., 156 (2015) 10–15.
  18. M.H. Kalavathy, T. Karthikeyan, S. Rajagopal, L.R. Miranda, Kinetic and isotherm studies of Cu(II) adsorption onto H3PO4- activated rubber wood saw dust, J. Colloid Interface Sci., 292 (2005) 354–362.
  19. M. Kincl, S. Turk, F. Vrecer, Application of experimental design methodology in development and optimization of drug release method, Int. J. Pharmaceutics, 291 (2005) 39–49.
  20. M. Rahmani, E. Ghasemi, M. Sasani, Application of response surface methodology for air assisted-dispersive liquid-liquid micro extraction of deoxynivalenol in rice samples prior to HPLC-DAD analysis and comparison with solid phase extraction cleanup, Talanta, 165 (2017) 27–32.
  21. A.A. D’Archivio, M.A. Maggi, F. Ruggieri, Prediction of the retention of s-triazines in reversed-phase high-performance liquid chromatography under linear gradient-elution conditions, J. Separ. Sci., 37 (2014) 1930–1936.
  22. A.A. D’Archivio, M.A. Maggi, F. Ruggieri, M. Carlucci, V. Ferrone, G. Carlucci, Optimization by response surface methodology of micro extraction by packed sorbent of non steroidal anti-inflammatory drugs and ultra-high performance liquid chromatography analysis of dialyzed samples, J. Pharm. Biomed. Anal., 125 (2016) 114–121.
  23. A.A. D’Archivio, M.A. Maggi, C. Marinelli, F. Ruggieri, F. Stecca, Optimization of temperature-programmed gas chromatographic separation of organochloride pesticides by response surface methodology, J. Chromatography A, 1423 (2015) 149–157.
  24. D.C. Montgomery, Design and analysis of experiments, fifth edition, John Wiley & Sons, New York. 2001
  25. G.M. Clarke, R.E. Kempson, Introduction to the Design and Analysis of Experiments, Arnold, London. 1997
  26. J.A. Cornell, How to apply response surface methodology, second edition, American Society for Quality Control, Wisconsin. 1990
  27. G. Box, N. Draper, Empirical model building and response surfaces, John Wiley & Sons, New York. 1987
  28. Z.R. Holan, B. Volesky, Biosorption of lead and Ni2+ by biomass of marine algae, Biotechnol. Bioeng., 43 (1994) 1001–1009.
  29. R. Wachter, A. Cordery, Response surface methodology modeling of diamond like carbon film deposition, Carbon, 37 (1999) 1529–1537.
  30. Rivera –Utrilla I Bautista-Toledo, M.A. Ferro-García, C. Moreno-Castilla method, Activated carbon surface modifications by adsorption of bacteria and their effect on aqueous lead adsorption, J. Chem. Technol. Biotechnol., 76 (2001) 1209–1215.
  31. D.E. Egirani, A.R. Baker, J.E. Andrews, Copper and zinc removal from aqueous solution by mixed mineral systems: I. Reactivity and removal kinetics, J. Colloid Interface Sci., 291 (2005) 319–325.
  32. V.C. Srivatsava, I.D. Mall, I.M. Mishra, Adsorption of toxic metal ions onto activated carbon: Study of sorption behaviour through characterization and kinetics, Chem. Eng. Process: Process Intensif., 47 (2008) 1269–1280.
  33. I. Aloma, M.A. Martin-Lara, I.L. Rodriguez, G. Blazquez, M. Calero, Removal of nickel(II) ions from aqueous solutions by biosorption on sugarcane bagasse, J. Taiwan Inst. Chem. Eng., 43 (2012) 275–281.
  34. I. Langmuir, The adsorption of gases on plane surfaces of glass, mica and platinum, J. Amer. Chem. Soc., 40 (1918) 1361–1403.
  35. H.Z. Freundlich, Uber die. Adsorption. in. losungen, Zeitschrift fur Physical Chemistry, 57 (1906) 385–470.
  36. S. Lagergren, Zur theorie der sogenannten adsorption gelöster stoffe, Kungliga Svenska Vetenskapsakademiens, Handlingar, 24 (1898) 1–39.
  37. Y.S. Ho, G. McKay, The kinetics of sorption of basic dyes from aqueous solution by sphagnum moss peat, Canad. J. Chem. Eng., 76 (1998) 822–827.
  38. M.H. Kalavathy, L.R. Miranda, M. Oleifera, A solid phase extractant for the removal of copper, nickeland zinc from aqueous solutions, Chem. Eng. J., 158 (2010) 188–199.
  39. K. Kadirvelu, K. Thamaraiselvi, C. Namasivayam, Adsorption of nickel(II) from aqueous solution onto activated carbon prepared from coir pith, Separ. Purif. Technol., 24 (2001) 497–505.
  40. K. Periasamy, C. Namasivayam, Removal of nickel(II) from aqueous solution wastewater using an agricultural waste: peanut hulls, Waste Manage., 15 (1995) 63–68.
  41. E. Dermibas, M. Kobya, S. Oncel, S. Sencan, Removal of Ni (II) from aqueous solution by adsorption onto hazelnut shell activated carbon: equilibrium studies, Bioresour Technol., 84 (2002) 291–293.
  42. H. Kalavathy, B. Karthik, L.R. Miranda, Removal and recovery of Ni and Zn from aqueous solution using activated carbon from Hevea brasiliensis: batch and column studies, Colloids Surfaces B, 78 (2010) 291–302.
  43. K. Kadirvelu, P. Senthilkumar, K. Thamaraiselvi, V. Subburam, Activated carbon prepared from biomass as adsorbent: elimination of Ni (II) from aqueous solution, Bioresourc Technol., 81 (2002) 87–90.
  44. A. Bhatnagara, A.K. Minochaa, Biosorption optimization of Nickel removal from water using Punica granatum peel waste, Colloids Surf. B Biointerfaces, 76 (2010) 544–548.
  45. C.A. Toles, W.E. Marshall, M.M. Johns, Granular activated carbon from nutshells for the uptake of metal ions and organic compounds, Carbon, 35 (1999) 1407–1414.