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|Title:||Effect of pH on chromium biosorption by chemically treated Saccharomyces|
|Keywords:||Biosorption;Chromium;Saccharomyces cerevisiae;Chemical pretreatment;pH|
|Abstract:||The effect of initial pH on biosorption by Saccharomyces cerevisiae of total chromium present in tannery effluent was investigated. Maximum biosorption efficiency was evident at neutral pH with a metal removal efficiency of 99 %. S. cerevisiae was then pretreated with NaOH and HCHO-HCOOH to study the role of proteins and amino acids, respectively, in biosorption. At pH 7, 9 and 11, biomass pretreated with NaOH exhibited significant biosorption as compared to raw biomass and that treated with HCHO-HCOOH. However, trend reversed at pH 2. At pH 4, untreated biomass exhibited maximum chromium sorption, when compared to that treated with NaOH and HCHO-HCOOH.|
|Appears in Collections:||JSIR Vol.66(08) [August 2007]|
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|JSIR 66(8) (2007) 675-679.pdf||62.71 kB||Adobe PDF||View/Open|
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