Calcium alginate as an eco-friendly supporting material for baker’s yeast strain in chromium bioremediation
Joint Authors
Mahmud, M. S.
Muhammad, Samah A.
Source
Housing and Building National Research Center Journal
Issue
Vol. 13, Issue 3 (31 Dec. 2017), pp.245-254, 10 p.
Publisher
Housing and Building National Research Center
Publication Date
2017-12-31
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Earth Sciences, Water and Environment
Physics
Abstract EN
In this study, Baker’s yeast strain (Saccharomyces cerevisiae) biomass was immobilized in alginate extract 3% forming Biomass/Polymer Matrices Beads (BPMB).
These beads were investigated for chromium biosorption from aqueous solution.
Factors such as solution pH, contact times, temperature values, stirring rates, BPMB dosages and initial chromium ions concentrations were experimentally tested using repeated-batch process to determine the sorption capacity for chromium (VI) ions.
Batch experiments were conducted at pH range from 1.5 to 7.5.
The optimum pH value was 3.5 for direct chromium removal.
The effect of chromium concentration was studied using different concentrations from 200 to 1000 ppm.
Freundlich’s isothermal model showed better representation of data than Langmuir’s isothermal model with correlation coefficient 0.922.
The maximum biosorption capacity of chromium was found to be 154 mg g1 at initial concentration 200 ppm under optimum conditions.
At the end of the experiments, BPMB were investigated for chromium biosorption from tannery effluent sample.
Results showed decrease in chromium concentration up to 85%.
The availability of recycling of the BPMB was also studied for three subsequent cycles.
The surface sequestration of metal ions by BPMB was characterized before and after metal binding using a scanning electron microscope (SEM) equipped with an energy dispersive X-ray analysis (EDXA) and FTIR spectroscopy in order to determine the mechanisms of chromium biosorption.
American Psychological Association (APA)
Mahmud, M. S.& Muhammad, Samah A.. 2017. Calcium alginate as an eco-friendly supporting material for baker’s yeast strain in chromium bioremediation. Housing and Building National Research Center Journal،Vol. 13, no. 3, pp.245-254.
https://search.emarefa.net/detail/BIM-783817
Modern Language Association (MLA)
Mahmud, M. S.& Muhammad, Samah A.. Calcium alginate as an eco-friendly supporting material for baker’s yeast strain in chromium bioremediation. Housing and Building National Research Center Journal Vol. 13, no. 3 (Dec. 2017), pp.245-254.
https://search.emarefa.net/detail/BIM-783817
American Medical Association (AMA)
Mahmud, M. S.& Muhammad, Samah A.. Calcium alginate as an eco-friendly supporting material for baker’s yeast strain in chromium bioremediation. Housing and Building National Research Center Journal. 2017. Vol. 13, no. 3, pp.245-254.
https://search.emarefa.net/detail/BIM-783817
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 252-254
Record ID
BIM-783817