Bionanosystem Engineering Department, Chonbuk National University, Jeonju 561-756, Republic of Korea.
Chemical Engineering Department, Faculty of Engineering, Minia University, Minia, Egypt.
J Environ Manage. 2018 Jan 15;206:228-235. doi: 10.1016/j.jenvman.2017.10.022. Epub 2017 Oct 23.
This study investigates three different strategies for anode surface treatment by doping superficial nitrogen groups on the anode surfaces of carbon cloth (CC) and carbon paper (CP). The chosen anodes were hydrothermally treated in the presence of an ammonia solution (AST), a mixture of nitric acid and sulfuric acid (AHT), and solid urea (UT) at 180 °C for 3 h. The utilized characterization techniques confirmed doping of nitrogen on the anode surfaces and a decrease in the oxygen-bonded carbon content. Furthermore, the results showed that the power and current densities were significantly affected by the surface modification techniques. Interestingly, the AST strategy achieved the highest power density of 159.3 mW and 91.6 mWm, which revealed an increase in power of 115% and 56.8% for CC-AST and CP-AST, respectively. Additionally, the maximum coulombic efficiencies were 63.9% and 27.5% for the CC-AST and CP-AST anodes, respectively. Overall, these results highlight the significance of anode surface modification for enhancing MFC performance to generate electricity and treat actual wastewater.
本研究通过在碳布（CC）和碳纸（CP）的阳极表面掺杂表面氮基团，考察了三种不同的阳极表面处理策略。选择的阳极在氨水溶液（AST）、硝酸和硫酸混合物（AHT）和固体尿素（UT）存在下于 180°C 下进行水热处理 3 小时。所采用的表征技术证实了阳极表面的氮掺杂和含氧键合碳含量的减少。此外，结果表明，表面改性技术显著影响了功率和电流密度。有趣的是，AST 策略实现了 159.3 mW 和 91.6 mWm 的最高功率密度，分别使 CC-AST 和 CP-AST 的功率增加了 115%和 56.8%。此外，CC-AST 和 CP-AST 阳极的最大库仑效率分别为 63.9%和 27.5%。总的来说，这些结果强调了阳极表面改性对于提高 MFC 性能以发电和处理实际废水的重要性。
