By a News Reporter-Staff News Editor at Ecology, Environment & Conservation -- Data detailed on Environmental Science and Technology have been presented. According to news reporting originating from Tianjin, People's Republic of China, by VerticalNews correspondents, research stated, "The microbial fuel cell (MFC), being an environment-friendly technology for wastewater treatment, is limited by low efficiency and high cost. Power output based on capital cost had been greatly increased in our previous work by introducing a novel activated carbon (AC) air-cathode (ACAC).
Our news editors obtained a quote from the research from Nankai University, "The catalysis behavior of this ACAC was studied here based on catalysis kinetics and pore analysis of both carbon powders and catalyst layers (CLs). Plain AC (AC1#), ultracapacitor AC (AC2#), and non-AC (XC-72) powders were used as catalysts. The electron transfer number (n) of oxygen reduction reaction (ORR) with CLs increased by 5-23% compared to those n values of corresponding carbon powders before being rolled to CLs with PTFE, while the n value of Pt/C decreased by 38% when it was brushed with Nafion as the CL, indicating that rolling procedure with PTFE binder substantially increased the catalytic activity of carbon catalysts. Two-four times larger in micropore area of AC powders than non-AC powder resulted in 1.3-1.9 times increase in power density of MFCs."

According to the news editors, the research concluded: "In addition, more uniform distribution of microporosity was found in AC1# than in AC2#, which could be the reason for the 25% increase in power density of ACAC1# (1355 +/- 26 mW.m(-2)) compared to 1086 +/- 8 mW.m-(2) of ACAC2#."

For more information on this research see: Catalysis Kinetics and Porous Analysis of Rolling Activated Carbon-PTFE Air-Cathode in Microbial Fuel Cells. Environmental Science & Technology, 2012;46(23):13009-13015. Environmental Science & Technology can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society -; Environmental Science & Technology -

The news editors report that additional information may be obtained by contacting H. Dong, Nankai Univ, MOE Key Lab Pollut Proc & Environm Criteria, Tianjin Key Lab Environm Remedizit & Pollut Contr, Coll Environm Sci & EngnRes Center Cleaner Prod, Tianjin 300071, People's Republic of China.

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