No enhancement of cyanobacterial bloom biomass decomposition by sediment microbial fuel cell (SMFC) at different temperatures. (November 2016)

• Record Type: Journal Article
• Authors: Ye, Tian-ran; Song, Na; Chen, Mo; Yan, Zai-sheng; Jiang, He-Long
• Is Part Of: Environmental pollution. Volume 218(2016)
• Page Start: 59
• Page End: 65
• Publication Date: 2016-11
• Subjects: Biodegradation -- Cyanobacteria biomass -- Organic matter -- Sediment microbial fuel cell -- Temperature; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2016.07.054
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: The sediment microbial fuel cell (SMFC) has potential application to control the degradation of decayed cyanobacterial bloom biomass (CBB) in sediment in eutrophic lakes. In this study, temperatures from 4 to 35 °C were investigated herein as the major impact on SMFC performance in CBB-amended sediment. Under low temperature conditions, the SMFC could still operate, and produced a maximum power density of 4.09 mW m −2 at 4 °C. Coupled with the high substrate utilization, high output voltage was generated in SMFCs at high temperatures. The application of SMFC affected the anaerobic fermentation progress and was detrimental to the growth of methanogens. At the same time, organic matter of sediments in SMFC became more humified. As a result, the fermentation of CBB was not accelerated with the SMFC application, and the removal efficiency of the total organic matter was inhibited by 5% compared to the control. Thus, SMFC could operate well year round in sediments with a temperature ranging from 4 to 35 °C, and also exhibit practical value by inhibiting quick CBB decomposition in sediments in summer against the pollution of algae organic matter. Graphical abstract: Highlights: High electricity generation coupled with high substrate utilization at temperature range from 4 to 35 °C. Methanogenesis and other fermentation processes were inhibited by SMFC. SMFC stimulated the humification of organic matter in sediments. The quick decomposition of CBB was inhibited with the SMFC application. Abstract : Effects of temperature on the performance of sediment microbial fuel cell.