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Separation and recovery of organic acids from fermented kitchen waste by an integrated process.

Omar, Farah Nadia, Abdul Rahman, Nor'Aini , Hafid, Halimatun Saadiah , Phang, Lai Yee and Hassan, Mohd Hassan (2009) Separation and recovery of organic acids from fermented kitchen waste by an integrated process. African Journal of Biotechnology, 8 (21). pp. 5807-5813. ISSN 1684–5315

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Abstract

Organic acids produced from anaerobic digestion of kitchen waste were recovered using a new integrated method which consisted of freezing and thawing, centrifugation, filtration and evaporation.The main organic acid produced was lactic acid (98%). After the freezing and thawing process, 73% of the total suspended solids were removed and the organic acids were elevated from 59.0 to 70 g/L. The evaporation technique was used to further concentrate the organic acids up to 224 g/L. Using the integrated recovery method, the reduction of the total suspended solids in the solution achieved was about 93%. The material balance for the recovery process was also presented.

Item Type:Article
Keyword:Anaerobic digestion; Kitchen waste; Organic acids; Recovery.
Subject:Organic acids.
Subject:Recycling (Waste, etc.)
Subject:Organic wastes.
Faculty or Institute:Faculty of Biotechnology and Biomolecular Sciences
Publisher:Academic Journals
ID Code:16670
Deposited By: Nida Hidayati Ghazali
Deposited On:19 Jun 2012 05:18
Last Modified:19 Jun 2012 05:18

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