Development of a UBFC biocatalyst fuel cell to generate power and treat industrial wastewaters.
Agro-industry wastewaters normally contain high levels of organic matter and require suitable treatment before discharge. The use of Microbial fuel cells, a novel wastewater treatment, can provide advantages over existing treatment methods. In this study, an up-flow bio-filter circuit (UBFC) for treating wastewaters without chemical treatment or nutrient supplement, was developed to solve a clogging problem. The optimal conditions included an organic loading rate of 30.0 g COD/L-d, hydraulic retention time of 1.04 day, pH level of 5.6-6.5 and aeration at 2.0 L/min. External resistance of the circuit was tested. COD removal levels of 8.08, 20.1 and 26.67 g COD/L-d were obtained, while fed with sea food, biodiesel and palm oil mill wastewater, respectively. These rates are higher than for conventional technologies. The carbon fiber brush immobilized base increased the performance of the new UBFC by 17.54% over that obtained in a previous study, while the cost was slightly decreased about 4.48%.
Department of Food Science and Technology, Faculty of Technology and Community Development, Thaksin University, Phatthalung Campus, Phatthalung 93110, Thailand; Research Center in Sustainable Energy and Environment, Thaksin University, Phatthalung Campus, Phatthalung 93110, Thailand. Electronic address: chontisa.s@gmail.com.
Chontisa
C
Sukkasem
Research Center in Sustainable Energy and Environment, Thaksin University, Phatthalung Campus, Phatthalung 93110, Thailand.
Sunee
S
Laehlah
D001674:Bioelectric Energy Sources; D056804:Biofuels; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors; D002244:Carbon / Q000737:chemistry; D000077482:Carbon Fiber; D002384:Catalysis; D004867:Equipment Design; D005285:Fermentation; D005374:Filtration; D019649:Food Industry; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D000073878:Palm Oil; D010938:Plant Oils; D017747:Seafood; D014865:Waste Disposal, Fluid / Q000379:methods; D062065:Wastewater; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
D056804:Biofuels; D002244:Carbon; D000077482:Carbon Fiber; D007220:Industrial Waste; D000073878:Palm Oil; D010938:Plant Oils; D062065:Wastewater; D014874:Water Pollutants, Chemical
Biocatalyst; High efficiency; Microbial fuel cell; Up-flow bio-filter circuit; Wastewater treatment