[1] H. Ucun, Y.K. Bayhan, Y. Kaya, A. Cakici and O.F. Algur, Biosorption of lead(II) from aqueous solution by cone biomass of Pinus sylvestris, Desalination 154 (2003) 233-238.
[2] V.A. Lemos, W.N.L. Santos, J.S. Santos and M.B. Carvalho, On-line preconcentration system using a mini column of polyurethane foam loaded with Me-BTABr for zinc determination by Flame Atomic Absorption Spectrometry, Anal. Chim. Acta 481 (2003) 283-290.
[3] E.J. Kim, S. Park, H. Hong, Y. Choi and J. Yang, Biosorption of chromium (Cr(III)/Cr(VI)) on the residual microalga Nannochloris oculata after lipid extraction for biodiesel production, Bioresource Technol. 102 (2011)1155-1160.
[4] C.M. Monteiro, P.M.L. Castro and F.X. Malcata, Biosorption of zinc ions from aqueous solution by the microalga Scenedesmus obliquus, Environ. Chem. Lett. 9 (2011) 169-176.
[5] A. Mudhoo, V.K. Garg and S. Wang, Removal of heavy metals by biosorption, Environ. Chem. Lett. 10 (2012) 109-117.
[6] H. Kinoshita, Y. Sohma, F. Ohtake, M. Ishida, Y. Kawai, H. Kitazawa, T. Saito and K. Kimura, Biosorption of heavy metals by lactic acid bacteria and identification of mercury binding protein, Res. Microbiol. 164 (2013) 701-709.
[7] O.S. Amuda, A.A. Giwa and I.A. Bello, Removal of heavy metal from industrial wastewater using modified activated coconut shell carbon, Biochem. Eng. J. 36 (2007)174181.
[8] M.J. Ayotamuno, R.N. Okparanma, S.O.T. Ogaji and S.D. Probert, Chromium removal from flocculation effluent of liquid-phase oilbased drill-cuttings using powdered activated carbon, Appl. Energ. 84 (2007) 1002-1011.
[9] A.K. Bhattacharya, T.K. Naiya, S.N. Mandal and S.K. Das, Chem. Eng. J. 137 (2008) 529541.
[10] M. Koroki, S. Saito, H. Hashimoto, T. Yamada and M. Aoyama, Removal of Cr(VI) from aqueous solutions by the culm of bamboo grass treated with concentrated sulfuric acid, Environ. Chem. Lett. 8 (2010) 59-61.
[11] C.M. Monteiro, P.M.L. Castro and F.X. Malcata, Capacity of simultaneous removal of zinc and cadmium from contaminated media, by two microalgae isolated from a polluted site, Environ. Chem. Lett. 9 (2011) 511-517.
[12] J. Volmajer, R. Toplak, S. Bittner and A.M. Le Marechal, 2-Oxiranecarbonitriles in the synthesis of linked quinono heterocyclic derivatives, ARKIVOC 14 (2003) 49-61.
[13] E.I. El-Shafey, Removal of Zn(II) and Hg(II) from aqueous solution on a carbonaceous sorbent chemically prepared from rice husk, J. Hazard. Mater. 175 (2010) 319-327.
[14] H.N. Bhatti, B. Mumtaz, M.A. Hanif and R. Nadeem, Removal of Zn(II) ions from aqueous solution using Moringa oleifera Lam. (horseradish tree) biomass, Process Biochem. 42 (2007) 547-553.
[15] M.K. Mondal, Removal of Pb(II) ions from aqueous solution using activated tea waste:Adsorption on a fixed-bed column, J. Environ.Manage 90 (2009) 3266-3271.
[16] M.M. Areco, S. Hanela, J. Duran and M.S. Afonso, Biosorption of Cu(II), Zn(II), Cd(II) and Pb(II) by dead biomasses of green alga Ulva lactuca and the development of a sustainable matrix for adsorption implementation J. Hazard. Mater. 213-214 (2012) 123-132.
[17] K.L. Wasewar, M. Atif, B. Prasad and I.M. Mishra, Batch adsorption of zinc on tea factory waste, Desalination 244 (2009) 6671.
[18] R.P. Suresh Jeyakumar and V. Chandrasekaran, Adsorption of lead(II) ions by activated carbons prepared from marine green algae: Equilibrium and kinetics studies, Int. J. Ind. Chem. 5 (2014) 2-10.
[19] N. Gupta, S.S. Amritphale and N. Chandra, Removal of Zn (II) from aqueous solution by using hybrid precursor of silicon and carbon, Bioresource Technol. 101 (2010) 3355-3362.
[20] R. Han, J. Zhang, W. Zou, J. Shi and H. Liu, Equilibrium biosorption isotherm for lead ion on chaff, J. Hazard. Mater. 125 (2005) 266271.
[21] P. Chand and Y.B. Pakade, Removal of Pb from water by adsorption on apple pomace: Equilibrium, kinetics, and thermodynamics studies, J. Chem. doi: 10.1155/2013/164575.
[22] L. Yuan and Y. Liu, Removal of Pb(II) and Zn(II) from aqueous solution by ceramisite prepared by sintering bentonite, iron powder and activated carbon, Chem. Eng. J. 215-216 (2013) 432-439.
[23] L. Wang, J. Zhang, R. Zhao, Y. Li, C. Li and C. Zhang, Adsorption of Pb(II) on activated carbon prepared from Polygonum orientale Linn.: Kinetics, isotherms, pH, and ionic strength studies, Bioresource Technol. 101 (2010) 5808-5814.
[24] M. Zhang, Adsorption study of Pb(II), Cu(II) and Zn(II) from simulated acid mine drainage using dairy manure compost, Chem. Eng. J. 172 (2011) 361-368.
[25] D. Zhao, X. Yang, H. Zhang , C. Chen and X. Wang, Effect of environmental conditions on Pb(II) adsorption on β-MnO2, Chem. Eng. J. 164 (2010) 49-55.
[26] H. Liu, C. Wang, J. Liu, B. Wang and H. Sun, Competitive adsorption of Cd(II), Zn(II) and Ni(II) from their binary and ternary acidic systems using tourmaline, J. Environ. Manage 128 (2013) 727-734.
[27] M.A. Prado Cechinel, S.M.A.G. Ulson de Souza and A.A. Ulson de Souza, Study of lead(II) adsorption onto activated carbon originating from cow bone, J. Clean. Proud. 65 (2014) 342-349.
[28] M. Mohammad, S. Maitra, N. Ahmad, A. Bustam, T.K. Sen and B.K. Dutta, Metal ions removal from aqueous solution using physic seed hull, J. Hazard. Mater. 179 (2010) 363372.
[29] A. Roy and J. Bhattacharya, Removal of Cu(II), Zn(II) and Pb(II) from water using microwave-assisted synthesized maghemite nanotubes, Chem. Eng. J. 211-212 (2012) 493-500.