Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering (MEGE), College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China.
Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering (MEGE), College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China; Key Lab of Marine Environmental Science and Ecology (Ocean University of China), Ministry of Education, Qingdao 266100, China.
Mar Pollut Bull. 2022 Sep;182:114013. doi: 10.1016/j.marpolbul.2022.114013. Epub 2022 Aug 5.
Remediation of mariculture wastewater is of great practical importance. In this study, sediment microbial fuel cells (SMFCs) were adopted and carbon felt anodes were modified to enhance COD and ammonia removal in mariculture system. The results showed that the SMFC anode with 5 % (w/w) graphene oxide (GO) coating performed best in pollutants removal and electricity generation. The maximum power density approached 132 mW/m, nearly 4.5 times higher than the unmodified anode. The removal efficiency of COD and ammonia reached 82.1 % and 95.8 % respectively, both improved compared with the control and chemical modification. The modified anode effectively enriched the electrogenic Sulfurovum and Lactobacillus and thus led to a significant improvement in the electrochemical performance of SMFC. This study demonstrates the successful application of SMFCs with GO modified anodes in the in-situ removing pollutants and SMFCs present obvious remediation potential on the contaminated mariculture inhabitant.
水产养殖废水的修复具有重要的实际意义。本研究采用沉积物微生物燃料电池（SMFC），并对碳毡阳极进行改性，以增强水产养殖系统中 COD 和氨氮的去除效果。结果表明，经过 5%（质量分数）氧化石墨烯（GO）涂层修饰的 SMFC 阳极在污染物去除和发电方面表现最佳。最大功率密度接近 132 mW/m，比未修饰的阳极高近 4.5 倍。COD 和氨氮的去除效率分别达到 82.1%和 95.8%，均优于对照和化学修饰组。修饰后的阳极有效地富集了产电硫杆菌属和乳杆菌属，从而显著提高了 SMFC 的电化学性能。本研究证明了在原位去除污染物方面，GO 修饰阳极的 SMFC 应用是成功的，SMFC 对受污染的水产养殖环境具有明显的修复潜力。
