References
[1]. Volesky, B., Holan, Z.R. (1995). Biosorption of heavy
metals, Biotechnology. Prog. 11, 235-250.
[2]. Veglio, F., Beolchini, F. (1997). Removal of metals by
biosorption: a review, Hydrometallurgy. 44, 301-316.
[3]. Kortenkamp, A., Casadevali, M., Faux, S.P., Jenner,
A., Shayer, O.J., Woodbridge, N., Obrien, P. (1996). A role
for molecular oxygen in the formation of DNA damage
during the reduction of the carcinogen chromium (VI) by
alutathione, Arch. Biochem.Biophys., 329(2), 199-208.
[4]. Ross, S.M. (1994). Toxic metals in soil plant system,
John wiley and Sons, Chichester, 3-26.
[5]. John, M.K., Laerhoven, V., Cross, C.H. (1975).
Cadmium, Lead and Zinc accumulate in soils nearer a
smother complex, Environ.Lett., 10, 25-35.
[6]. Tiller, K.Y. (1989). Heavy metals in soil and their
environmental significance, Adv.Soil.Sci., 9, 113-142.
[7]. Kannan, K. (1995). Fundamentals of environmental
pollution, S chand Co Limited, New Delhi.
[8]. Sawyer, C.N., McCarty, P.L., Parkin, G.F. (2003).
Chemistry for environmental engineering and Science,
Tata McGraw-Hill Publishing, New Delhi, 5th Edn., 660-661 and 717.
[9]. Kumar, D.A. (2004). Environmental chemistry, New
age international, New Delhi, 5th Edn., 280.
[10]. Celik, A., Demirabas, A. (2005). Removal of heavy
metal ions from aqueous solutions via adsorption onto
modified lignin wastes, Energy sources, 27, 1167-1177.
[11]. Zhou, X., Korenaga, T., Takahashi, T Moriwake, T
Shinoda, S. (1993). A process monitoring/controlling
system for the treatment of waste water containing (VI),
Water Res. 27, 1049.
[12]. iravanti, G., Petruzzelli, D., Passino, R. (1997).
Pretreatment of tannery wastewaters by an ion-exchange
process for Cr (III) removal and recovery,
Water.Sci.Technol. 36, 197-207.
[13]. Seaman, J.C., Bertsch, P.M., Schwallie, L. (1999). In-
Situ Cr (VI) reduction within coarse – textured oxide-coated
soil and aquifer systems using Fe (II) solutions,
Environ.Sci.Technol. 33, 938-944.
[14]. Kongsricharoern, N., Polprasert, C. (1996).
Chromium removal by a bipolar electro-chemical
precipitation process, Water.Sci.Technol. 34, 109-116.
[15]. Pagilla, K.R., Canter, L.W. (1999). Laboratory studies
on remediation of Chromium –contaminated soils,
J.Environ.Eng, 125, 243-248.
[16]. Chakravathi, A.K., Chowadary, S.B., Chakrabarty,
S., Chakrabarty, T., Mukherjee, D.C. (1995). Liquid
membrane multiple emulsion process of chromium (VI)
separation from waste waters, Colloids,Surf.A, 103, 59-71.
[17]. Aksu, Z., Ozer, D., Ekiz, H.I., Kutsal, T., Calar.A. (1996).
Investigation of Biosorption of Chromium (VI) on
Cladophora Crispata in Two-Staged Batch Reactor,
Environ.Technol., 17, 215-220.
[18]. Huang, S.D., Fann, C.F., Hsiech, H.S. (1982). Foam
separation of chromium (VI) from aqueous solution,
J.Colloid.Interface.Sci., 89, 504-513.
[19]. Orthan, Y., Buyukgungor, H. (1993). The removal of
heavy metals by using agricultural wastes, Water
Sci.Technol., 28, 247-255.
[20]. Vazquez, G., Gonzalaez-Alvarez, J., Freire, S.,
Lopez-Lorenzo, M., Antorrena, G. (2002). Removal of cadmium and mercury ions from aqueous solution by
sorption on treated pinus pinaster bark: kinetics and
isotherms, Bio.reso. Technol., 82, 247-251.
[21]. Omgbu, J.A., Iweanya, V.I. (1990). Dynamic sorption
of Pb2+ and Zn2+ with palm kernel husk, J.Chem.Ed., 67,
800-801.
[22]. Low, K.S., Lee, C.K., Ng., A.Y. (1999). Column study on
the sorption of Cr (VI) using quaternized rice hulls, Bio.reso.
Technol., 68, 205-208.
[23]. Dakiky, M., Kharmics, M., Manassra, A., Mereb, M.
(2002). Selective adsorption of chromium (VI) in industrial
waste water using low cost abundantly available
adsorbents, Adv. Environ. Res., 6, 533-537.
[24]. Langmuir, I. (1918). Adsorption of gases on glass,
Mica, and Platinum, J.Am.Chem.Soc. 40, 1361-1403.
[25]. Freundlich, H. (1907). Veber die adsorption in
loesungen (adsorption in solution), Z.Phys.Chem. 57, 385.
[26]. Tempkin, M.J. & Pyzhev, V. (1940). Recent
modifications to Langmuir Isotherms, Acta Physiochim.
URSS, 12, 217-222.
[27]. Hall, K.E., Eagleton, L.C., Acrivos. A. & Vermeulen, T.
(1996). Pore and solid diffusion kinetics in fixed bed
adsorption under constant pattern conditions,
Ind.Eng.Chem.Fundam., 5, 212-223.
[28]. Mckay, G., Otterburn & Sweny, A.G. (1981). Surface
mass transfer processes during color removal from
effluent using silica, Water Res., 15, 327-331.
[29]. Baral, S.S., Das. N., Roy Choudary, G. & Das. S.N,
(2009). A preliminary study on the adsorptive removal of
Chromium (VI) using seaweed, Hydrilla Verticillata,
J.Hazard.Mater., 171, 358-369.
[30]. Weber, W.J. & Jr. Morris, J.C. (1963). Kinetics of
adsorption on carbon from solution, J. Sanit.
Eng.Div.AMSE, 89, 31-59.