文章基本信息

标题：Bioremediation of Arsenic (III) from Water Using Baker Yeast Sacchromyces cerevisiae
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作者：Debarshi Roy ; Priya Gaur ; Neeraj Verma 等
期刊名称：International Journal of Environmental Bioremediation & Biodegradation
印刷版ISSN：2333-8628
电子版ISSN：2333-8636
出版年度：2013
卷号：1
期号：1
页码：14-19
DOI：10.12691/ijebb-1-1-3
语种：English
出版社：Science and Education Publishing
摘要：The availability of arsenic in ground water and potable water accounts many toxic effects on human health because of its high toxicity level; it has become a global concern. Previously to decrease As (III) concentration in water various removal methods were explored. In the present study baker yeast Saccharomyces cerevisiae, used as a biosorbate to remediate the Arsenic (III) in the ground water, its capability was examined to sequester the metal ions from the arsenic contaminated water. Initially yeast was grown in YEPD medium and synthetic solution of As (III) was prepared in 3 different conc. 0.2 mg/l, 0.3 mg/l and 0.4 mg/l respectively. Systematic batch kinetic experiments were conducted with various process parameters such as agitation period, pH, and temperature; all the parameters were studied and found that Saccharomyces cerevisiae had very fine competence towards arsenic removal from the contaminated water under optimized condition of agitation period 120 hours, temperature 55ºC and pH 6 were maintained. Removal of As (III) from supernatant was analyzed using the Atomic Absorption Spectrophotometer. It has been found that the percentage removal of Arsenic species (III) increases with decrease in YPD media and Saccharomyces cerevisiae removed 82.2%, 87.8% and 90.46% with respect to different concentration of synthetic solution of As (III) and it is highly effective method for the As (III) removal from the contaminated water.
关键词：Saccharomyces cerevisiae; bioremediation; arsenic; batch kinetics; Atomic absorption spectrophotometer; Growth optimization