Water Research Group (WAREG), School of Environmental Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia.
Water Research Group (WAREG), School of Environmental Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia.
Bioresour Technol. 2018 Oct;266:97-108. doi: 10.1016/j.biortech.2018.06.035. Epub 2018 Jun 18.
This study explored the influence of azo dye concentration, salinity (with and without aeration) and nitrate concentration on bioelectricity generation and treatment performance in the up-flow constructed wetland-microbial fuel cell (UFCW-MFC) system. The decolourisation efficiencies were up to 91% for 500 mg/L of Acid Red 18 (AR18). However, the power density declined with the increment in azo dye concentration. The results suggest that the combination of salinity and aeration at an optimum level improved the power performance. The highest power density achieved was 8.67 mW/m. The increase of nitrate by 3-fold led to decrease in decolourisation and power density of the system. The findings revealed that the electron acceptors (AR18, nitrate and anode) competed at the anodic region for electrons and the electron transfer pathways would directly influence the treatment and power performance of UFCW-MFC. The planted UFCW-MFC significantly outweighed the plant-free control in power performance.
本研究探讨了偶氮染料浓度、盐度（充气和不充气）以及硝酸盐浓度对上升式人工湿地-微生物燃料电池（UFCW-MFC）系统生物电能产生和处理性能的影响。对于 500mg/L 的酸性红 18（AR18，一种偶氮染料），脱色效率高达 91%。然而，随着偶氮染料浓度的增加，功率密度下降。结果表明，在最佳水平下结合盐度和充气可提高功率性能。达到的最大功率密度为 8.67mW/m。硝酸盐增加 3 倍会导致系统的脱色和功率密度下降。研究结果表明，电子受体（AR18、硝酸盐和阳极）在阳极区争夺电子，电子转移途径会直接影响 UFCW-MFC 的处理和功率性能。种植的 UFCW-MFC 在功率性能方面明显优于无植物对照。
