Microalgae growth using high-strength wastewater followed by anaerobic co-digestion

Integration of algal biofuel production to wastewater anaerobic digestion infrastructure has the potential to increase biogas production, decrease high and variable internal nitrogen loads, and improve sludge digestibility and dewaterability. In this research, two species of microalgae, Spirulina pl...

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Veröffentlicht in:Water environment research : a research publication of the Water Environment Federation. - 1998. - 84(2012), 5 vom: 25. Mai, Seite 396-404
1. Verfasser: Yuan, Xin (VerfasserIn)
Weitere Verfasser: Wang, Meng, Park, Chul, Sahu, Ashish K, Ergas, Sarina J
Format: Aufsatz
Sprache:English
Veröffentlicht: 2012
Zugriff auf das übergeordnete Werk:Water environment research : a research publication of the Water Environment Federation
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Biofuels Sewage Carbon Dioxide 142M471B3J
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245 1 0 |a Microalgae growth using high-strength wastewater followed by anaerobic co-digestion 
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520 |a Integration of algal biofuel production to wastewater anaerobic digestion infrastructure has the potential to increase biogas production, decrease high and variable internal nitrogen loads, and improve sludge digestibility and dewaterability. In this research, two species of microalgae, Spirulina platensis and Chlorella sp., were grown on sludge centrate and a centrate and nitrified wastewater effluent mixture. Harvested algae were co-digested with waste activated sludge (WAS) at varying ratios. High-growth (6.8 g m(-2) x d(-1)), nitrogen (36.5 g m(-3) x d(-1)), and phosphorus (6.5 g m(-3) x d(-1)) uptake rates were achieved with Chlorella on centrate. No growth was observed with S. platensis under the same conditions; however, both organisms grew well on the centrate and effluent mixture. Co-digestion of algae with WAS improved volatile solids reduction. Although co-digestion with S. platensis improved biosolids dewaterability, Chlorella had a slight negative effect on dewaterability compared to WAS alone. The efficiency of energy conversion from photons to biogas generated from Chlorella was estimated at 1.4% 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
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700 1 |a Wang, Meng  |e verfasserin  |4 aut 
700 1 |a Park, Chul  |e verfasserin  |4 aut 
700 1 |a Sahu, Ashish K  |e verfasserin  |4 aut 
700 1 |a Ergas, Sarina J  |e verfasserin  |4 aut 
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