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- Title
Uptake of heavy metals by Stylonychia mytilus and its possible use in decontamination of industrial wastewater.
- Authors
A. Rehman; Farah Shakoori; A. Shakoori
- Abstract
Abstract The heavy metal resistant ciliate, Stylonychia mytilus, isolated from industrial wastewater has been shown to be potential bioremediator of contaminated wastewater. The ciliate showed tolerance against Zn2+ (30 μg/mL), Hg2+ (16 μg/mL) and Ni2+ (16 μg/mL). The metal ions slowed down the growth of the ciliate as compared with the culture grown without metal stress. The reduction in cell population was 46% for Cd2+, 38% for Hg2+, 23% for Zn2+, 39% for Cu2+ and 51% for Ni2+ after 8 days of metal stress. S. mytilus reduced 91% of Cd2+, 90% of Hg2+ and 98% of Zn2+ from the medium after 96 h of incubation in a culture medium containing 10 μg/mL of the respective metal ions. Besides this, the ciliate could also remove 88% of Cu2+ and 73% Ni2+ from the medium containing 5 μg/mL of each metal after 96 h. The ability of Stylonychia to take up variety of heavy metals from the medium could be exploited for metal detoxification and environmental clean-up operations.
- Subjects
INDUSTRIAL waste purification; BIOLOGICAL decontamination; STYLONYCHIA; HEAVY metals
- Publication
World Journal of Microbiology & Biotechnology, 2008, Vol 24, Issue 1, p47
- ISSN
0959-3993
- Publication type
Article
- DOI
10.1007/s11274-007-9436-1