Author:
Basak Geetanjali,V Lakshmi,Chandran Preethy,Das Nilanjana
Abstract
Abstract
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.
Publisher
Springer Science and Business Media LLC
Subject
Health, Toxicology and Mutagenesis,Public Health, Environmental and Occupational Health,Pollution,Waste Management and Disposal,Water Science and Technology,Applied Microbiology and Biotechnology,Environmental Engineering
Reference42 articles.
1. The Council of the European Communities: Directive 76/464/EEC on pollution caused by certain dangerous substances discharged into the aquatic environment of the community. Off J Eur Commun 1976. No. L 129/23
2. Ramos RL, Jacome LAB, Barron JM, Rubio LF, Coronado RMG: Adsorption of zinc(II) from an aqueous solution onto activated carbon. J Hazard Mater 2002, B90: 27–38.
3. Mohan D, Singh KP: Single and multi-component adsorption of cadmium and zinc using activated carbon derived from bagasse – an agricultural waste. Water Res 2002, 36: 2304–2318.
4. Norton L, Baskaran K, McKenzie ST: Biosorption of zinc from aqueous solutions using biosolids. Adv Environ 2004, 8: 629–635.
5. Li H, Lin Y, Guan W, Chang J, Xu L, Guo J, Wei G: Biosorption of Zn(II) by live and dead cells of Streptomyces ciscaucasius Starin CCNWHX 72–14. J Hazard Mater 2010, 179: 151–159.
Cited by
22 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献