文章基本信息
- 标题：Removal of Zn(II) from electroplating effluent using yeast biofilm formed on gravels: batch and column studies
- 本地全文：下载
- 作者：Geetanjali Basak ; Lakshmi V ; Preethy Chandran 等
- 期刊名称：Journal of Environmental Health Science and Engineering
- 印刷版ISSN：2052-336X
- 出版年度：2014
- 卷号：12
- 期号：1
- 页码：8
- DOI：10.1186/2052-336X-12-8
- 语种：English
- 出版社：BioMed Central
- 摘要：
Background
Present study deals with the removal of Zn(II) ions from effluent using yeast biofilm formed on gravels.
Methods
The biofilm forming ability of Candida rugosa and Cryptococcus laurentii was evaluated using XTT (2,3-bis[2-methoxy-4-nitro-5-sulfophenyl]-2H-tetrazolium-5-carboxanilide) reduction assay and monitored by scanning electron microscopy (SEM), and Confocal laser scanning microscopy (CLSM). Copious amount of extracellular polymeric substances (EPS) produced by yeast species was quantified and characterized by Fourier transform infrared spectroscopy (FT-IR).
Results
Yeast biofilm formed on gravels by C. rugosa and C. laurentii showed 88% and 74.2% removal of Zn(II) ions respectively in batch mode. In column mode, removal of Zn(II) ions from real effluent was found to be 95.29% by C. rugosa biofilm formed on gravels.
Conclusion
The results of the present study showed that there is a scope to develop a cost effective method for the efficient removal of Zn(II) from effluent using gravels coated with yeast biofilm.
- 关键词：Biofilm on gravels; CLSM; Electroplating effluent; Packed bed column; Yeast; Zn(II) removal
