A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Production of Polyhydroxyalkanoate During Treatment of Tomato Cannery Wastewater
Polyhydroxyalkanoate (PHA) production was achieved using tomato cannery waste coupled with a mixed microbial culture during wastewater treatment. The two‐stage PHA production process comprised a sequencing batch reactor (SBR), operating under a periodic feast–famine regime, to accomplish simultaneously wastewater treatment and selection of PHA‐accumulating microbes, followed by a batch reactor for the production of PHA‐rich biomass. The SBRs were efficient at removing soluble carbon (84%), ammonia (100%), and phosphorus (76%). Meanwhile, PHA‐accumulating microbes were enriched under the SBR operating conditions, and PHA content on a cell‐weight basis was within the range 7 to 11% in nonfiltered wastewater and 2 to 8% in filtered wastewater. Subsequently, batch studies were implemented with varying loading rates, ranging from 0.4 to 3.2 food‐to‐microorganism ratios. A maximum 20% PHA content on a cell‐weight basis was obtained. Based on the experimental results, a PHA biosynthesis‐degradation kinetic model was developed to (1) aid in the design of a pilot‐ or full‐scale PHA production process coupled with wastewater treatment and (2) determine optimal conditions for harvest of PHA‐rich biomass.
Production of Polyhydroxyalkanoate During Treatment of Tomato Cannery Wastewater
Polyhydroxyalkanoate (PHA) production was achieved using tomato cannery waste coupled with a mixed microbial culture during wastewater treatment. The two‐stage PHA production process comprised a sequencing batch reactor (SBR), operating under a periodic feast–famine regime, to accomplish simultaneously wastewater treatment and selection of PHA‐accumulating microbes, followed by a batch reactor for the production of PHA‐rich biomass. The SBRs were efficient at removing soluble carbon (84%), ammonia (100%), and phosphorus (76%). Meanwhile, PHA‐accumulating microbes were enriched under the SBR operating conditions, and PHA content on a cell‐weight basis was within the range 7 to 11% in nonfiltered wastewater and 2 to 8% in filtered wastewater. Subsequently, batch studies were implemented with varying loading rates, ranging from 0.4 to 3.2 food‐to‐microorganism ratios. A maximum 20% PHA content on a cell‐weight basis was obtained. Based on the experimental results, a PHA biosynthesis‐degradation kinetic model was developed to (1) aid in the design of a pilot‐ or full‐scale PHA production process coupled with wastewater treatment and (2) determine optimal conditions for harvest of PHA‐rich biomass.
Production of Polyhydroxyalkanoate During Treatment of Tomato Cannery Wastewater
Liu, Hsin‐Ying (author) / Hall, Patrizia V. (author) / Darby, Jeannie L. (author) / Coats, Erik R. (author) / Green, Peter G. (author) / Thompson, Donald E. (author) / Loge, Frank J. (author)
Water Environment Research ; 80 ; 367-372
2008-04-01
6 pages
Article (Journal)
Electronic Resource
English
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