Department of Biological Environment, Kangwon National University, Chuncheon, Gangwon 200-701, Republic of Korea.
Department of Environmental Science & Biotechnology, Institute of Energy & Environment, Hallym University, Chuncheon, Gangwon 200-702, Republic of Korea.
Bioresour Technol. 2014 Aug;165:21-6. doi: 10.1016/j.biortech.2014.03.018. Epub 2014 Mar 15.
This study investigated the effects of different sludge pretreatment methods (ultrasonic vs. combined heat/alkali) with varied sources of municipal sewage sludge (primary sludge (PS), secondary excess sludge (ES), anaerobic digestion sludge (ADS)) on electricity generation in microbial fuel cells (MFCs). Introduction of ultrasonically pretreated sludge (PS, ES, ADS) to MFCs generated maximum power densities of 13.59, 9.78 and 12.67mW/m(2) and soluble COD (SCOD) removal efficiencies of 87%, 90% and 57%, respectively. The sludge pretreated by combined heat/alkali (0.04N NaOH at 120°C for 1h) produced maximum power densities of 10.03, 5.21 and 12.53mW/m(2) and SCOD removal efficiencies of 83%, 75% and 74% with PS, ES and ADS samples, respectively. Higher SCOD by sludge pretreatment enhanced performance of the MFCs and the electricity generation was linearly proportional to the SCOD removal, especially for ES.
本研究考察了不同污泥预处理方法（超声与热/碱联合）与不同来源城市污水污泥（初沉污泥（PS）、剩余污泥（ES）、厌氧消化污泥（ADS））对微生物燃料电池（MFC）发电的影响。将超声预处理污泥（PS、ES、ADS）引入 MFC 中，可分别产生 13.59、9.78 和 12.67mW/m(2) 的最大功率密度和 87%、90%和 57%的可溶性 COD（SCOD）去除效率。经热/碱联合预处理（0.04N NaOH 在 120°C 下处理 1 小时）的污泥，分别在 PS、ES 和 ADS 样品中产生 10.03、5.21 和 12.53mW/m(2) 的最大功率密度和 83%、75%和 74%的 SCOD 去除效率。污泥预处理后 SCOD 增加，提高了 MFC 的性能，且发电与 SCOD 去除呈线性比例关系，尤其对于 ES 而言更是如此。
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