Optimization of chromium(VI) removal by indigenous microalga (Chlamydomonas sp.)‐based biosorbent using response surface methodology

Phycoremediation of heavy metals has garnered considerable recent research interest. In this study, an indigenous microalga (Chlamydomonas sp.)‐based biosorbent was employed for biosorption of Cr(VI) dissolved solids (Cr(VI)‐DS), optimized using response surface methodology (RSM). The effects of mic...

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Bibliographic Details
Published in:Water environment research 2021-08, Vol.93 (8), p.1276-1288
Main Authors: Ayele, Abate, Suresh, Arumuganainar, Benor, Solomon, Konwarh, Rocktotpal
Format: Article
Language:English
Subjects:
Algae
Aquatic microorganisms
Biomass
Bioremediation
biosorbent
Biosorption
Carbonyl compounds
Carbonyl groups
Carbonyls
Chlamydomonas
Chlamydomonas sp
Chromium
Dissolved solids
Electronegativity
Functional groups
Heavy metals
Hexavalent chromium
Metals
microalga
Microalgae
Optimization
pH effects
phycoremediation
Phytoplankton
Removal
Response surface methodology
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Summary:Phycoremediation of heavy metals has garnered considerable recent research interest. In this study, an indigenous microalga (Chlamydomonas sp.)‐based biosorbent was employed for biosorption of Cr(VI) dissolved solids (Cr(VI)‐DS), optimized using response surface methodology (RSM). The effects of microalga concentration, pH, and contact time were studied with 250 mg Cr(VI)‐DS L−1. The biosorption of Cr(VI)‐DS was higher at acidic pH (94.17% at pH 4) than at alkaline conditions (68.53% at pH 10). The interaction of pH and microalga concentration exerted significant (p 
ISSN:1061-4303
1554-7531
DOI:10.1002/wer.1510