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JSIR Vol.66 [2007] >
JSIR Vol.66(08) [August 2007] >
| Title: | Effect of pH on chromium biosorption by chemically treated Saccharomyces |
| Authors: | Parvathi, K
Nagendran, R
Nareshkumar, R |
| Keywords: | Biosorption
Chromium
Saccharomyces cerevisiae
Chemical pretreatment
pH |
| Issue Date: | Aug-2007 |
| Publisher: | CSIR |
| 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. |
| Page(s): | 675-679 |
| ISSN: | 0022-4456 |
| Source: | JSIR Vol.66(08) [August 2007]
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