Biohydrogen production using an up-flow anaerobic sludge blanket reactor

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• 作者：Chang ; Feng-Yung ; Lin ; Chiu-Yue
• 关键词：Hydrogen production ; Sewage sludge ; Biogranule ; UASB
• 刊名：International Journal of Hydrogen Energy
• 出版年：2004
• 出版时间：January, 2004
• 年：2004
• 卷：29
• 期：1
• 页码：33-39
• 全文大小：189 K

文摘

Sewage sludge was acclimated to establish H₂-producing enrichment cultures for converting sucrose (20gCOD/l) into H₂ in an up-flow anaerobic sludge blanket (UASB) reactor. The operating hydraulic retention times (HRTs) were 24–4h. The experimental results indicated that this UASB system could be used for hydrogen production. The hydrogen productivity was HRT dependent and nearly constant at the HRT of 8–20h. However, it drastically decreased at an HRT of 4 or 24h. The hydrogen production rate (HPR) and specific HPR peaked at the HRT of 8h and drastically decreased at all other HRTs. At an HRT of 8h, the average granular diameter peaked at 0.43mm and each gram of biomass produced 53.5mmolH₂/day with a hydrogen gas content of 42.4 % (v/v). Butyrate and acetate were the main fermentation volatile fatty acids. The anaerobic granule sludge kinetic constants were endogenous decay coefficient (K_d)0.1day⁻¹ and yield coefficient (Y_g)0.1gVSS/gCOD. The mean cell retention time was 22.2h and the excess sludge discharge rate was 3.24l/day.