کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1272646 | 1497484 | 2014 | 7 صفحه PDF | دانلود رایگان |
• A new process of bio-electrochemical system assisted ABR was proposed.
• The stability and efficiency were enhanced of this new combined system.
• 98.0% proportion of methane in biogas was achieved which is higher than others.
• Total COD removal rate was improved to 98.0% in the combining stage.
In this study, a new process was proposed to enhance the stability and efficiency of an anaerobic baffled reactor (ABR). The process was examined in a four equal compartments ABR with total volume of 3.46 L. The first compartment was operated for fermentative hydrogen production and the last three compartments were used as continuous singer chamber microbial electrolysis cells (MECs) for methanogenesis. The system was operated at 35 ± 1 °C and hydraulic retention time (HRT) of 24 h with influent chemical oxygen demand (COD) concentration of 3500 mg/L–4000 mg/L. The results indicated that the proportion of hydrogen in the first compartment was 20.7% and proportions of methane in the last three compartments were 98.0%, 93.6% and 70.1%, respectively. A total of 98.0% of COD removal rate was achieved as well. Hence, this new system has following advantages: hydrogen production with cleaner effluent, high COD removal rate, and net methane production for practical use.
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 25, 22 August 2014, Pages 13498–13504