Hydrogen production from alcohol wastewater by an anaerobic sequencing batch reactor under thermophilic operation: Nitrogen and phosphorous uptakes and transformation
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- 作者：Patcharee Intanoo ; Pramoch Rangsunvigit ; Weerachart Namprohm ; B ; hit Thamprajamchit ; Jittipan Chavadej ; Sumaeth Chavadej
- 关键词：Hydrogen production ; Alcohol wastewater ; Anaerobic sequencing batch reactor (ASBR) ; Thermophilic operation ; N and P requirement
- 刊名：International Journal of Hydrogen Energy
- 出版年：2012
- 出版时间：August, 2012
- 年：2012
- 卷：37
- 期：15
- 页码：11104-11112
- 全文大小：630 K
文摘
The objective of this study was to investigate hydrogen production from alcohol wastewater using an anaerobic sequencing batch reactor (ASBR) under thermophilic operation and at a constant pH of 5.5. Under the optimum COD loading rate of 68?kg/m3d, the produced gas contained 43 % H2 without methane and the system provided a hydrogen yield and specific hydrogen production rate of 130?ml H2/g COD removed and 2100?ml H2/l d, respectively, which were much higher than those obtained under the mesophilic operation. Under thermophilic operation, both nitrogen and phosphate uptakes were minimal at the optimum COD loading rate for hydrogen production and most nitrogen uptake was derived from organic nitrogen. Under the thermophilic operation for hydrogen production, the nutrient requirement in terms of COD:N:P was found to be 100:6:0.5, which was much higher than that for the methenogenic step for methane production under both thermophilic and mesophilic operations and for the acidogenic step for hydrogen production under mesophilic operation.