Liquid state bioconversion of domestic wastewater sludge for bioethanol production
The production of bioethanol was conduct-ed by utilizing domestic wastewater sludge as major substrate using the yeast, Saccharomyces cerevisiae in liquid state bioconversion method (submerged fermenta-tion). The optimum media and process conditions ob-tained from previous studies by using central c...
| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2007
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/5841/ http://irep.iium.edu.my/5841/ http://irep.iium.edu.my/5841/1/biomed2006-2.pdf |
| Summary: | The production of bioethanol was conduct-ed by utilizing domestic wastewater sludge as major substrate using the yeast, Saccharomyces cerevisiae in liquid state bioconversion method (submerged fermenta-tion). The optimum media and process conditions ob-tained from previous studies by using central composite design were applied in this study to evaluate the biocon-version process through ethanol production. The results presented in this study showed that 9.8% ethanol was produced utilizing sludge as substrate by Saccharomyces cerevisiae within 48 hours of fermentation while the COD, copper and chromium (heavy metals) removal were found to be 62%, 68% and 45% respectively in treated sludge after 72 hours of fermentation period. The total suspended solids (TSS) as biosolids (microbial growth) was observed to evaluate the microbial perfor-mance in bioconversion process. The observed yield and productivity were determined as well. |
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