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HERO ID
2064248
Reference Type
Journal Article
Title
Biosorption of As (III) by non-living biomass of an arsenic-hypertolerant Bacillus cereus strain SZ2 isolated from a gold mining environment: Equilibrium and kinetic study
Author(s)
Mohd Bahari, Z; Ali Hamood Altowayti, W; Ibrahim, Z; Jaafar, J; Shahir, S
Year
2013
Is Peer Reviewed?
Yes
Journal
Applied Biochemistry and Biotechnology
ISSN:
0273-2289
EISSN:
1559-0291
Volume
171
Issue
8
Page Numbers
2247-2261
Language
English
PMID
24037600
DOI
10.1007/s12010-013-0490-x
Web of Science Id
WOS:000327494800027
Abstract
The ability of non-living biomass of an arsenic-hypertolerant Bacillus cereus strain SZ2 isolated from a gold mining environment to adsorb As (III) from aqueous solution in batch experiments was investigated as a function of contact time, initial As (III) concentration, pH, temperature and biomass dosage. Langmuir model fitted the equilibrium data better in comparison to Freundlich isotherm. The maximum biosorption capacity of the sorbent, as obtained from the Langmuir isotherm, was 153.41 mg/g. The sorption kinetic of As (III) biosorption followed well the pseudo-second-order rate equation. The Fourier transform infrared spectroscopy analysis indicated the involvement of hydroxyl, amide and amine groups in As (III) biosorption process. Field emission scanning electron microscopy-energy dispersive X-ray analysis of the non-living B. cereus SZ2 biomass demonstrated distinct cell morphological changes with significant amounts of As adsorbed onto the cells compared to non-treated cells. Desorption of 94 % As (III) was achieved at acidic pH 1 showing the capability of non-living biomass B. cereus SZ2 as potential biosorbent in removal of As (III) from arsenic-contaminated mining effluent.
Keywords
Biosorption; Bioremediation; Arsenic; Non-living biomass; Bacillus cereus
Tags
IRIS
•
Arsenic Hazard ID
PubMed
Considered New
PubMed
Considered New
PubMed
WOS
Considered New
2. Lit Search Updates through Oct 2015
PubMed
WOS
Considered
7. Other Studies through Oct 2015
Other
•
Arsenic (Inorganic)
1. Literature
Lit search updates through Oct 2015
3. Hazard ID Screening
Other potentially supporting studies
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