Khardenavis, Anshuman and Kumar, M Suresh and Mudliar, Sandeep N and Chakrabarti, Tapan (2007) Biotechnological conversion of agro-industrial wastewaters into biodegradable plastic, poly b-hydroxybutyrate. Bioresource Technology , 98. pp. 3579-3584. ISSN 0960-8524, ESSN: 1873-2976

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Abstract

Waste activated sludge generated from a combined dairy and food processing industry wastewater treatment plant was evaluated for its potential to produce biodegradable plastic, poly b-hydroxybutyric acid (PHB). Deproteinized jowar grain-based distillery spentwash yielded 42.3% PHB production (w/w), followed by filtered rice grain-based distillery spentwash (40% PHB) when used as substrates. Addition of di-ammonium hydrogen phosphate (DAHP) resulted in an increase in PHB production to 67% when raw rice grain-based spentwash was used. Same wastewater, after removal of suspended solids by filtration and with DAHP supplementation resulted in lower PHB production (57.9%). However, supplementing other wastes with DAHP led to a substantial decrease in PHB content in comparison to what was observed in the absence of DAHP.

Item Type:	Article
Uncontrolled Keywords:	Biodegradable Plastics; Poly b-hydroxybutyric Acid; Activated Sludge; Industrial Wastewaters; Biopolymers
Subjects:	Industrial Wastewater Reuse Recycle Recovery Waste Utilization Environmental Resources, Conservation Environmental Biotechnology Microbiology
Divisions:	UNSPECIFIED
Depositing User:	Dr Anshuman Khardenavis
Date Deposited:	31 Mar 2017 10:02
Last Modified:	09 May 2017 09:11
URI:	http://neeri.csircentral.net/id/eprint/788

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