Bhattacharya, Priyankari and Mallick, Kwonit and Ghosh, Sourja and Banerjee, Priya and Mukhopadhyay, Aniruddha and Bandyopadhyay, Sibdas (2014) Algal Biomass as Potential Biosorbent for Reduction of Organic Load in Gray Water and Subsequent Reuse: Effect on Seed Germination and Enzyme Activity. Bioremediation Journal, 18 (1). pp. 56-70. ISSN 1088-9868

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Abstract

Biosorptive treatment using algal biomass of Rhizoclonium riparium was proposed for higher-loading gray water for its effective utilization. A batch sorption study was conducted using composite wastewater having a wide range of initial chemical oxygen demand (COD) values (2400-44,800mg/L). The study showed an optimum dose of 5g/L of biosorbent resulted in 96% reduction of COD for wastewater with an initial COD of 10,500mg/L. The equilibrium isotherm data at different temperatures were fitted to linear and nonlinear isotherms. Biosorption kinetics was studied by various kinetic models. Chemical composition and surface morphology of the biosorbent were characterized by infrared, x-ray diffraction, and scanning electron microscopy techniques before and after biosorption. Applicability of the biosorbent-treated wastewater in agricultural uses was explored by studying the effect of untreated and treated wastewater on the germination of two seeds, i.e., Vigna radiata and Lens esculenta, and subsequently the activity of peroxidase (POD) enzymes were studied to understand the toxicity in plants. The study revealed that compared with seeds treated with different dilutions of untreated wastewater, germination (%) was significantly higher for biosorbent-treated wastewater, with a reduced level of POD activity, indicating positive response of the seeds towards the biosorptive treatment.

Item Type:	Article
Subjects:	Environment and Pollution
Divisions:	Ceramic Membrane
Depositing User:	Bidhan Chaudhuri
Date Deposited:	16 Dec 2014 07:30
Last Modified:	16 Dec 2014 07:30
URI:	http://cgcri.csircentral.net/id/eprint/2637

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