Performance improvement of the osmotic microbial fuel cell by the pre-treatment of anaerobic sewage sludge using solenoid magnetic field

被引:2
作者
Bhagat, Mandar S. [1 ]
Mungray, Arvind Kumar [1 ]
Mungray, Alka A. [1 ]
机构
[1] Sardar Vallabhbhai Natl Inst Technol SV NIT, Dept Chem Engn, Surat 395007, Gujarat, India
关键词
Sewage sludge; magnetic field; fuel cell; degradation; biofilm; WASTE-WATER TREATMENT; ORGANIZATIONAL JUSTICE; ELECTRICITY-GENERATION; PROCEDURAL JUSTICE; OSMOSIS; MEMBRANE; RECOVERY; DESALINATION; ENERGY;
D O I
10.1080/09593330.2023.2190039
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This study explored the effect of a solenoid magnetic field (SOMF) as a pre-treatment on anaerobic sewage sludge (ASS) before using it in an osmotic microbial fuel cell (OMFC) as an inoculant. The ASS efficiency in terms of colony-forming unit (CFU) was improved ten times by applying SOMF compared to the control conditions. The obtained highest power density, current density, and water flux in the OMFC were 32.70 +/- 5 mW center dot m(-2), 135.13 +/- 15 mA center dot m(-2), and 4.24 +/- 0.11 L center dot m(-2)h(-1) respectively, for 72 h at 1 mT magnetic field. The coulombic efficiency (CE) and chemical oxygen demand (COD) removal efficiency were increased to 40-45% and 4-5% respectively, compared to un-treated ASS. Also, the start-up time of the ASS-OMFC system was almost reduced to 1-2 days based on open circuit voltage data. On the other hand, increasing the pre-treatment intensity of SOMF with time, it decreased the performance of OMFC. Also, the low intensity with increased pre-treatment time up to a specific limit enhanced the performance of OMFC.
引用
收藏
页码:2809 / 2819
页数:11
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