Author:
Bhattacharya Priyankari,Ghosh Sourja,Mukhopadhyay Aniruddha
Abstract
Abstract
Background
The present study was undertaken to evaluate the efficiency of combined technology involving ceramic microfiltration and biosorbent for the treatment of tannery effluent from different streams, viz. composite effluent, effluent from primary clarifier and secondary clarifier. The membranes were prepared from a cost-effective composition of alumina and clay.
Results
The effluents had high organic loading of 12,895, 3,890 and 410 mg/L, respectively, in terms of chemical oxygen demand (COD). Apart from these, the effluents consisted of toxic heavy metals, turbidity, biochemical oxygen demand (BOD), etc. It was observed that COD reduction was about 96.5% for effluent 1, 96.6% for effluent 2 and 96.9% for effluent 3. Considerable reduction in suspended solids, total nitrogen, and total organic carbon was obtained. Turbidity for all three types of effluent was below 1 NTU. The average flux value for effluents 1, 2 and 3 was about 13, 19 and 24 L/m2/h (LMH), respectively. Response of the antioxidative defences of Euphorbia hirta was observed which resulted in considerable decrease in the activity of peroxidase, superoxide dismutase and catalase.
Conclusions
The treatment resulted in the reduction of toxicity thereby restoring normal activity when compared to control values. Changes in various biochemical parameters like protein, amino acid, carbohydrate, DNA, RNA and chlorophyll content were observed.
Publisher
Springer Science and Business Media LLC
Subject
Waste Management and Disposal,Agricultural and Biological Sciences (miscellaneous)
Reference45 articles.
1. Aebi HE: Catalase. In Methods of enzymatic analyses, vol 3. Edited by: Bergmeyer HU. Weinheim: Verlag Chemie; 1983:273–282.
2. Ahmad P, Sharma S, Srivastava PS: In vitro selection of NaHCO
3
tolerant cultivars of Morus alba (Local and Sujanpuri) in response to morphological and biochemical parameters. Hort Sci 2007, 34: 114–122.
3. Altaf MM, Masood F, Malik A: Impact of long-term application of treated tannery effluents on the emergence of resistance traits in Rhizobium sp. isolated from Trifolium alexandrinum . Turk J Biol 2008, 32: 1–8.
4. Anglada A, Urtiaga A, Ortiz I: Contributions of electrochemical oxidation to waste-water treatment: fundamentals and review of applications. J Chem Technol Biot 2009,84(12):1747–1755. 10.1002/jctb.2214
5. Anil KK, Varaprasad P, Vijaya Bhaskara Rao A: Effect of fluoride on catalase, guiacol peroxidase and ascorbate oxidase activities in two verities of mulberry leaves ( Morus alba L.). Res J Earth Sci 2009,1(2):69–73.
Cited by
6 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