| Title: | Power generation from cassava alcohol wastewater: effects of pretreatment and anode aeration |
| Author(s): | Quan X; Tao K; Mei Y; Jiang X; |
| Address: | "Key Laboratory of Water and Sediment Sciences, Ministry of Education, State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, People's Republic of China, xchquan@bnu.edu.cn" |
| DOI: | 10.1007/s00449-014-1210-9 |
| ISSN/ISBN: | 1615-7605 (Electronic) 1615-7591 (Linking) |
| Abstract: | "Cassava alcohol wastewater produced from the bioethanol production industry is carbohydrate-rich wastewater with large quantities of insoluble organic compounds. Microbial fuel cells (MFCs) were used for electricity recovery and pollutants removal from this wastewater. Different pretreatment methods (solid-liquid separation, ultrasonication, pre-fermentation) and anode-aeration modes were explored in MFCs aimed to enhance the efficiency of power generation and pollutants removal. Pre-fermentation was found to be the most effective pretreatment method. A maximum power density of 437.13 +/- 15.6 mW/m(2) and TCOD removal of 62.5 +/- 3.5% were achieved using the pre-fermented wastewater, 150 and 20% higher than the un-pretreated control. Aeration in anode chamber could promote the hydrolysis of organic matter and production of VFAs in the raw wastewater, and increase TCOD removal and power density. Pre-fermentation coupled with halfway anode aeration may be a feasible strategy to enhance power generation and pollutants removal from the cassava wastewater in MFCs" |
| Keywords: | "Aerobiosis Alcohols *Bioelectric Energy Sources Bioengineering *Biofuels Biological Oxygen Demand Analysis Equipment Design Fatty Acids, Volatile/analysis Fermentation Manihot/*chemistry Wastewater/*analysis Water Pollutants, Chemical/isolation & purifica;" |
| Notes: | "MedlineQuan, Xiangchun Tao, Kun Mei, Ying Jiang, Xiaoman eng Research Support, Non-U.S. Gov't Germany 2014/05/21 Bioprocess Biosyst Eng. 2014 Nov; 37(11):2325-32. doi: 10.1007/s00449-014-1210-9. Epub 2014 May 20" |
