Lipid-enhancement of activated sludges obtained from conventional activated sludge and oxidation ditch processes
Autor: | William Holmes, W. Todd French, Allison Forks, Robert Callahan, Rafael Hernandez, Emmanuel D. Revellame |
---|---|
Rok vydání: | 2013 |
Předmět: |
chemistry.chemical_classification
Environmental Engineering Waste management Sewage Renewable Energy Sustainability and the Environment Polyhydroxyalkanoates Fatty Acids Fatty acid Bioengineering General Medicine Lipids Waste Disposal Fluid Water Purification chemistry.chemical_compound Activated sludge Wastewater chemistry Bioenergy Biofuel Saponifiable lipid Sewage treatment Food science Waste Management and Disposal Oxidation-Reduction Fatty acid methyl ester |
Zdroj: | Bioresource technology. 148 |
ISSN: | 1873-2976 |
Popis: | Lipid-enhancement of activated sludges was conducted to increase the amount of saponifiable lipids in the sludges. The sludges were obtained from a conventional activated sludge (CAS) and an oxidation ditch process (ODP). Results showed 59–222% and 150–250% increase in saponifiable lipid content of the sludges from CAS and ODP, respectively. The fatty acid methyl ester (FAMEs) obtained from triacylglycerides was 57–67% (of total FAMEs) for enhanced CAS and 55–73% for enhanced ODP, a very significant improvement from 6% to 10% (CAS) and 4% to 8% (ODP). Regardless of the source, the enhancement resulted in sludges with similar fatty acid profile indicating homogenization of the lipids in the sludges. This study provides a potential strategy to utilize existing wastewater treatment facilities as source of significant amount of lipids for biofuel applications. |
Databáze: | OpenAIRE |
Externí odkaz: |