Improved Electricity Generation by a Microbial Fuel Cell after Pretreatment of Ammonium and Nitrate in Livestock Wastewater with Microbubbles and a Catalyst
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Livestock wastewater containing high concentrations of ammonium and nitrate ions was pretreated with microbubbles and an Fe/MgO catalyst prior to its application in microbial fuel cells because high ion concentrations can interfere with current generation. Therefore, tests were designed to ascertain the effect of pretreatment on current generation. In initial tests, the optimal amount of catalyst was found to be 300 g/l. When 1,000 ml/min O2 was used as the oxidant, the removal of ammonium- and nitrate-nitrogen was highest. After the operating parameters were optimized, the removal of ammonium and nitrate ions was quantified. The maximum ammonium removal was 32.8%, and nitrate was removed by up to 75.8% at a 500 g/l catalyst concentration over the course of the 2 h reaction time. The current was about 0.5 mA when livestock wastewater was used without pretreatment, whereas the current increased to 2.14 ± 0.08 mA when livestock wastewater was pretreated with the method described above. This finding demonstrates that a 4-fold increase in the current can be achieved when using pretreated livestock wastewater. The maximum power density and current density performance were 10.3 W/m3 and 67.5 A/m3, respectively, during the evaluation of the microbial fuel cells driven by pretreated livestock wastewater.
Abstract
Livestock wastewater containing high concentrations of ammonium and nitrate ions was pretreated with microbubbles and an Fe/MgO catalyst prior to its application in microbial fuel cells because high ion concentrations can interfere with current generation. Therefore, tests were designed to ascertain the effect of pretreatment on current generation. In initial tests, the optimal amount of catalyst was found to be 300 g/l. When 1,000 ml/min O2 was used as the oxidant, the removal of ammonium- and nitrate-nitrogen was highest. After the operating parameters were optimized, the removal of ammonium and nitrate ions was quantified. The maximum ammonium removal was 32.8%, and nitrate was removed by up to 75.8% at a 500 g/l catalyst concentration over the course of the 2 h reaction time. The current was about 0.5 mA when livestock wastewater was used without pretreatment, whereas the current increased to 2.14 ± 0.08 mA when livestock wastewater was pretreated with the method described above. This finding demonstrates that a 4-fold increase in the current can be achieved when using pretreated livestock wastewater. The maximum power density and current density performance were 10.3 W/m3 and 67.5 A/m3, respectively, during the evaluation of the microbial fuel cells driven by pretreated livestock wastewater.
참고문헌 (27)
- Agarwal A, "Principle and applications of microbubble and nanobubble technology for water treatment", Chemosphere, 84, pp.1175~1180 (2011)
- Angenent L, "Production of bioenergy and biochemicals from industrial and agricultural wastewater", Trends Biotechnol, 22, pp.477~485 (2004)
- Boopathy R, "Biological treatment of swine waste using anaerobic baffled reactors", Bioresour. Technol, 64, pp.1~6 (1998)
- Gi l GC, "Operational parameters affecting the performance of a mediator-less microbial fuel cell", Biosens. Bioelectron, 18, pp.327~324 (2003)
- He Z, "Electricity production coupled to ammonium in a microbial fuel cell", Environ. Sci. Technol, 43, pp.3391~3397 (2009)
- Jang JK, "Nitrilotriacetic acid degradation under microbial fuel cell environment", Biotechnol. Bioeng, 95, pp.772~774 (2006)
- Jae Kyung Jang, "Effect of Ammonium and Nitrate on Current Generation Using Dual-Cathode Microbial Fuel Cells", Journal of Microbiology and Biotechnology, 22(2), pp.270~273 (2012), 한국미생물·생명공학회
- Jang JK, "Construction and operation of a novel mediator- and membrane-less microbial fuel cell", Process Biochem, 39, pp.1007~1012 (2004)
- 장재경, "가축분뇨의 마이크로버블과 촉매와의 반응 시간 증가에 따라 질소 제거에 미치는 영향", 대한환경공학회지, 39(10), pp.578~582 (2015), 대한환경공학회[DOI]
- Kim J, "Integrated realtime control strategy for nitrogen removal in swine wastewater treatment using sequencing batch reactors", Water Res, 38, pp.3340~3348 (2004)
- Kishida N, "Effectiveness of oxidation–reduction potential and pH as monitoring and control parameters for nitrogen removal in swine wastewater treatment by sequencing batch reactors", J. Biosci. Bioeng, 96, pp.285~290 (2003)
- Kudryashov SV, "Removal of hydrogen sulfide from methane in a barrier discharge", Plasma Chem. Plasma Process, 35, pp.201~215 (2015)
- 이득기, "촉매 산화에 의한 수중 암모니아의 분자질소로의 제거", 대한환경공학회지, 25(7), pp.889~897 (2003), 대한환경공학회
- 이인규, "Removal of COD and Color from Anaerobic Digestion Effluent of Livestock Wastewater by Advanced Oxidation Using Microbubbled Ozone", 공업화학, 22(6), pp.617~622 (2011), 한국공업화학회
- Lee J, "Advanced w et oxidation of Fe", MgO: catalystic ozonation of humic acid and phenol, 2002, pp.8, 4573~4575
- Logan BE, "Microbial fuel cells: methodology and technology", Environ. Sci. Technol, 40, pp.5181~5192 (2006)
- Lovley DR, "Bug juice: harvesting electricity with microorganisms", Nature, 4, pp.497~508 (2006)
- Marui T, "An introduction to micro", nano-bubbles and their applications, 2013, pp.11, 68~73
- Min B, "Electricity generation from swine wastewater using microbial fuel cells", Water Res, 39, pp.4961~4968 (2005)
- Nam JY, "Ammonia inhibition of electricity generation in single-chambed microbial fuel cells", J. Power Sources, 195, pp.6428~6433 (2010)
- Rabaey K, "Microbial fuel cells: novel biotechnology for energy generation", Trends Biotechnol, 23, pp.291~298 (2005)
- Rajagopal R, "A critical review on inhibition of anaerobic digestion process by excess ammonia", Bioresour. Technol, 143, pp.632~641 (2013)
- Ravaey K, "A microbial fuel cell capable of converting glucose to electricity at high rate and efficiency", Biotechnol. Lett, 25, pp.1531~1535 (2003)
- Shin J, "Enhanced COD and nitrogen removal for the treatment of swine wastewater by combining submerged membrane bioreactor (MBR) and anaerobic upflow bed filter (AUBF) reactor", Process Biochem, 40, pp.3769~3776 (2005)
- Takahashi M, "Free-radical generation from collapsing microbubbles in the absence of a dynamic stimulus", J. Phys. Chem. B, 111, pp.1343~1347 (2007)
- Terasaka K, "Development of microbubble aerator for waste water treatment using aerobic activated sludge", Chem. Eng. Sci, 66, pp.3172~3179 (2011)
- Wagner RC, "Hydrogen and methane production from swine wastewater using microbial electrolysis cells", Water Res, 43, pp.1480~1488 (2009)