Extreme-thermophilic biohydrogen production by an anaerobic heat treated digested sewage sludge culture
메타 데이터
바이오화학분류
바이오정밀화학
용매
연료
화장품용 기능성소재
계면활성제⁄증점제
의료용 화학소재
식품첨가제
논문
Extreme-thermophilic biohydrogen production by an anaerobic heat treated digested sewage sludge culture
학술지
International journal of hydrogen energy
저자명
Hasyim, R.; Imai, T.; Reungsang, A.; O-Thong, S.
초록
Biohydrogen production process from glucose using extreme-thermophilic H<SUB>2</SUB>-producing bacteria enriched from digested sewage sludge was investigated for five cycles of repeated batch experiment at 70 <SUP>o</SUP>C. Heat shock pretreatment was used for preparation of hydrogen-producing bacteria comparing to an untreated anaerobic digested sludge for their hydrogen production performance and responsible microbial community structures. The results showed that the heat shock pretreatment completely repressed methanogenic activity and gave the maximum hydrogen production yield of 355-488 ml H<SUB>2</SUB>/g COD in the second cycle of repeated batch cultivation with more stable gas production during the cultivation when compared with control. Hydrogen production was accompanied by production of acetic acid. The average specific hydrogen in five cycles experiment ranged from 150 to 200 ml H<SUB>2</SUB>/g VSS. PCR-DGGE profiling showed that the extreme-thermophilic culture predominant species were closely affiliated to Thermoanaerobacter pseudethanolicus.