Separation and recovery of organic acids from fermented kitchen waste by an integrated process
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...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Academic Journals
2009
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| Online Access: | http://psasir.upm.edu.my/id/eprint/16670/1/16670.pdf http://psasir.upm.edu.my/id/eprint/16670/ http://www.academicjournals.org/journal/AJB/article-abstract/A8777188619 |
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| Summary: | 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. |
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