In:
Environmental Science: Water Research & Technology, Royal Society of Chemistry (RSC), Vol. 10, No. 1 ( 2024), p. 296-303
Abstract:
Microbial fuel cells (MFCs) have been applied in wastewater treatment; however, the secondary use of recovered electricity has been rarely investigated. Here, we aimed to optimize electricity recovery and the secondary use strategy using a 246 L reactor packed with 12 tubular air-cathode MFC units using an anion exchange membrane (AEM) as the separator. Parallelly connected eight MFC units exhibited a maximum electric power, 3.5-fold higher than a single MFC, from 16 to 58 mW; however, the power density was the highest for a single MFC or two MFCs considered together, at 0.10 and 0.11 W m −2 , respectively, and decreased for more than three MFCs. Electricity recovery from the MFCs by changing the combination ratios of the MFCs and two DC/DC converters, LTC3105 and ADP5090, was the most efficient (60%) considering the connection of a single MFC and ADP5090, respectively. The 12 pairs of MFCs and ADP5090 in 245 L wastewater powered an aeration pump to achieve 0.39 L h −1 aeration flow in wastewater, an air fan to have 12.8 L h −1 air-flow, and lit two LEDs. Thus, the electricity generated by MFCs treating wastewater could be used to operate various devices, although improvements in individual MFCs are necessary for practical implementation.
Type of Medium:
Online Resource
ISSN:
2053-1400
,
2053-1419
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2024
detail.hit.zdb_id:
2818865-2
detail.hit.zdb_id:
2833082-1
