NDLI: Bioremediation of industrial toxic metals with gum kondagogu (Cochlospermum gossypium ): A natural carbohydrate biopolymer

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Bioremediation of industrial toxic metals with gum kondagogu (Cochlospermum gossypium ): A natural carbohydrate biopolymer

Content Provider	Semantic Scholar
Author	Vinod, V. Sashidhar, R. B.
Copyright Year	2011
Abstract	biosorption and adsorption capacity, were investigated. Metal biosorption (%) and adsorption capacity of the biopolymer was determined by ICP-MS. Gum kondagogu was capable of competitively biosorb 8 toxic metal ions from the samples of industrial effluents tested. The adsorption capacity was observed to be in the following order, Cd 2+ > Cu 2+ > Fe 2+ > Pb 2+ > Hg 2+ > total Cr > Ni 2+ > Zn 2+ . The maximum adsorption capacity of metals by gum kondagogu varied in the range of 31-37 mg g -1 for Fe 2+ and minimum of 5.5-9.3 mg g -1 for Hg 2+ in the effluent samples tested. The equilibrium adsorption data were fitted to Langmuir isotherm models for all the metal ions adsorbed. FT-IR studies were carried out to understand the type of functional groups in gum kondagogu responsible for metal biosorption process. Desorption studies on biosorbed metal ions showed that HCl was a good eluant for all metals tested. The re-adsorption capacity of the recycled gum kondagogu biopolymer sustained its biosorption property at 90% level, even after 3 cycle of desorption. Gum kondagogu biopolymer has the potential to be used as an effective, non-toxic, economical and an efficient biosorbent clean-up matrix for removal of toxic metals from industrial effluents.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://nopr.niscair.res.in/bitstream/123456789/10959/1/IJBT%2010(1)%20113-120.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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