Transformation from biofiltration unit to hybrid constructed wetland-microbial fuel cell: Improvement of wastewater treatment performance and energy recovery.

Autor: Teoh TP; Water Research and Environmental Sustainability Growth, Centre of Excellence (WAREG), Universiti Malaysia Perlis, 02600, Arau, Perlis, Malaysia.; Faculty of Civil Engineering & Technology, Universiti Malaysia Perlis (UniMAP), 02600, Arau, Perlis, Malaysia., Koo CJ; Faculty of Civil Engineering & Technology, Universiti Malaysia Perlis (UniMAP), 02600, Arau, Perlis, Malaysia., Ho LN; Faculty of Chemical Engineering Technology, Universiti Malaysia Perlis (UniMAP), 02600, Arau, Perlis, Malaysia., Wong YS; Water Research and Environmental Sustainability Growth, Centre of Excellence (WAREG), Universiti Malaysia Perlis, 02600, Arau, Perlis, Malaysia.; Faculty of Civil Engineering & Technology, Universiti Malaysia Perlis (UniMAP), 02600, Arau, Perlis, Malaysia., Lutpi NA; Water Research and Environmental Sustainability Growth, Centre of Excellence (WAREG), Universiti Malaysia Perlis, 02600, Arau, Perlis, Malaysia.; Faculty of Civil Engineering & Technology, Universiti Malaysia Perlis (UniMAP), 02600, Arau, Perlis, Malaysia., Tan SM; Water Research and Environmental Sustainability Growth, Centre of Excellence (WAREG), Universiti Malaysia Perlis, 02600, Arau, Perlis, Malaysia.; Faculty of Civil Engineering & Technology, Universiti Malaysia Perlis (UniMAP), 02600, Arau, Perlis, Malaysia., Yap KL; Faculty of Chemical Engineering Technology, Universiti Malaysia Perlis (UniMAP), 02600, Arau, Perlis, Malaysia., Ong SA; Water Research and Environmental Sustainability Growth, Centre of Excellence (WAREG), Universiti Malaysia Perlis, 02600, Arau, Perlis, Malaysia. ongsoonan@yahoo.com.; Faculty of Civil Engineering & Technology, Universiti Malaysia Perlis (UniMAP), 02600, Arau, Perlis, Malaysia. ongsoonan@yahoo.com.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2023 May; Vol. 30 (21), pp. 59877-59890. Date of Electronic Publication: 2023 Apr 04.
DOI: 10.1007/s11356-023-26789-6
Abstrakt: This study aimed to compare the performance of biofiltration, constructed wetland, and constructed wetland microbial fuel cell (CW-MFC). The transformation from a biofiltration unit to a hybrid CW-MFC was demonstrated with the advantages of improvement of wastewater treatment while generating electricity simultaneously. The introduction of plants to the upper region of the bioreactor enhanced the DO level by 0.8 mg/L, ammonium removal by 5 %, and COD removal by 1 %. The integration of electrodes and external circuits stimulated the degradation rate of organic matter in the anodic region (1 % without aeration and 3 % with aeration) and produced 5.13 mW/m 3 of maximum power density. Artificial aeration improved the nitrification efficiency by 38 % and further removed the residual COD to an efficiency of 99 %. The maximum power density was also increased by 3.2 times (16.71 mW/m 3 ) with the aid of aeration. In treating higher organic loading wastewater (3M), the maximum power density showed a significant increment to 78.01 mW/m 3 (4.6-fold) and the COD removal efficiency was 98 %. The ohmic overpotential dominated the proportion of total loss (67-91 %), which could be ascribed to the low ionic conductivity. The reduction in activation and concentration loss contributed to the lower internal resistance with the additional aeration and higher organic loading. Overall, the transformation from biofiltration to a hybrid CW-MFC system is worthwhile since the systems quite resemble while CW-MFC could improve the wastewater treatment as well as recover energy from the treated wastewater.
(© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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