DCMFC两腔液量变化与产电性能的关系

doi:10.11949/j.issn.0438-1157.20180159

摘要/Abstract

摘要：

随着DCMFC产电周期的增加，阴阳极间的液位差明显增加。为解析此现象，从蒸发、渗透压、生物代谢及电场角度考察了质子和水的传递行为，研究了产水与电池性能的关系。结果表明：360 h内蒸发、渗透压引起的液量变化少于0.50 ml（液面降低0.5 mm）；断路312 h，阳极代谢气体使PEM形变凸向阴极，阳极液减少6.20 ml（下降6.5 mm），阴极液增加10.75 ml（上升11.2 mm），两腔液位差达17.7 mm；通路下，除膜的形变，水合质子被电渗透到阴极并还原成水，312 h内阳极液减少10.70 ml（下降11.1 mm），阴极液增加17.00 ml（上升17.7 mm），两腔液位差达28.8 mm，且产水量随电压的增大而增加。研究表明，生物代谢及电渗透对两腔液量影响较大，产水量可表征质子传递率。经计算该系统质子传递率大于54%，为评判产电效率提供了简便依据。

关键词: 燃料电池, 液量变化, 电渗透, 质子传递, 生物催化, 厌氧

Abstract:

The liquid level difference between the cathode and the anode increased obviously with increase of operation cycles in the dual chamber microbial fuel cell (DCMFC). To analyze this phenomenon, the transport behavior of proton and water was investigated from evaporation, osmotic pressure, metabolism and electric field. The relationship between water production and the fuel's performance was studied. The results showed that within 360 h, the liquid change due to evaporation and osmotic pressure was less than 0.50 ml (liquid level declined near 0.5 mm). Within 312 h of circuit breakage, the anodic metabolism gas led to the proton exchange membrane (PEM) deformation convex to the cathode. The anodic liquid decreased 6.20 ml (liquid level reduced near 6.5 mm), the cathodic liquid increased 10.75 ml (liquid level rose near 11.2 mm) and the liquid level difference reached 17.7 mm. Under the circuit connection, except the PEM deformation, the protons were dragged by electro-osmotic to the cathode and reduced to water. Within 312 h, the anodic liquid decreased 10.70 ml (liquid level reduced about 11.1 mm), the cathodic liquid increased 17.00 ml (liquid level rose about 17.7 mm), and then formed a 28.8 mm liquid level difference. Moreover, the water transmission increased with the increase of output voltage. The results implied that the biological metabolism and electro-osmotic had an important influence on DCMFC liquid difference. It was possible to calculate proton transfer rate based on its water production. The proton transfer rate in the system was over 54%. This study provided a simple and intuitive basis for judging the electricity production efficiency.

Key words: fuel cells, liquid volume change, electro-osmosis drag, proton transfer, bio-catalysis, anaerobic

中图分类号:

X172
X784

尹越, 袁林江, 牛雨薇. DCMFC两腔液量变化与产电性能的关系[J]. 化工学报, 2018, 69(8): 3605-3610.

YIN Yue, YUAN Linjiang, NIU Yuwei. Relationship between liquid change in dual chambers and performance of electricity production in DCMFC[J]. CIESC Journal, 2018, 69(8): 3605-3610.

参考文献 31

[1]	高雄英, 吴夏芫, 宋天顺, 等. 微生物燃料电池化学阴极与生物阴极处理含铬废水[J]. 环境工程学报, 2015, 9(7):3275-3280. GAO X Y, WU X Y, SONG T S, et al. Treatment of chromium (Ⅳ) wastewater with abiotic cathode and biocathode microbial fuel cells[J]. Chinese Journal of Environmental Engineering, 2015, 9(7):3275-3280
[2]	ROZENDAL R A, HAMELERS H V M, RABAEY K, et al. Towards practical implementation of bio-electrochemical wastewater treatment[J]. Trends in Biotechnology, 2008, 26(8):450-459.
[3]	MORRIS J M, JIN S. Feasibility of using microbial fuel cell technology for bioremediation of hydrocarbons in groundwater[J]. Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering, 2008, 43(1):18-23.
[4]	KIM I S, CJAE K J, MI J C, et al. Microbial fuel cells:recent advances, bacterial communities and application beyond electricity generation[J]. Environmental Engineering Research, 2008, 13(2):51-65.
[5]	MOON H, CHANG I S, JANG J K, et al. On-line monitoring of low biochemical oxygen demand through continuous operation of a mediator-less microbial fuel cell[J]. Journal of Microbiology & Biotechnology, 2005, 15(1):192-196.
[6]	KIM B H, CHANG I S, GIL G C, et al. Novel BOD (biological oxygen demand) sensor using mediator-less microbial fuel cell[J]. Biotechnology Letters, 2003, 25(7):541-545.
[7]	RABAEY K, VERSTRAETE W. Microbial fuel cells:novel biotechnology for energy generation[J]. Trends in Biotechnology, 2005, 23(6):291-298.
[8]	张吉强, 郑平, 季军远, 等. 微生物燃料电池及其在环境领域的应用[J]. 水处理技术, 2013, 39(1):12-18. ZHANG J Q, ZHENG P, JI J Y, et al. Microbial fuel cell application in the field of environment[J]. Technology of Water Treatment, 2013, 39(1):12-18.
[9]	ZHANG F, BRASTAD K S, HE Z. Integrating forward osmosis into microbial fuel cells for wastewater treatment, water extraction and bioelectricity generation[J]. Environmental Science & Technology, 2011, 45(15):6690-6695.
[10]	ISHIZAKI S, FUJIKI I, SANO D, et al. External CO2 and water supplies for enhancing electrical power generation of air-cathode microbial fuel cells[J]. Environmental Science & Technology, 2014, 48(19):11204-11210.
[11]	YANG E, CHAE K, KIM I S. Comparison of different semipermeable membranes for power generation and water flux in osmotic microbial fuel cells[J]. Journal of Chemical Technology & Biotechnology, 2015, 91(8):2305-2312.
[12]	CHENG S, LIU W, GUO J, et al. Effects of hydraulic pressure on the performance of single chamber air-cathode microbial fuel cells[J]. Biosensors & Bioelectronics, 2014, 56(2):264-270.
[13]	ZHANG X, CHENG S, HUANG X, et al. Improved performance of single-chamber microbial fuel cells through control of membrane deformation[J]. Biosensors & Bioelectronics, 2010, 25(7):1825-1828.
[14]	SANTORO C, CREMINS M, PASAOGULLARI U, et al. Evaluation of water transport and oxygen presence in single chamber microbial fuel cells with carbon-based cathodes[J]. Journal of the Electrochemical Society, 2013, 160(160):G3128-G3134.
[15]	MCCUTCHEON J R, ELIMELECH M. Influence of concentrative and dilutive internal concentration polarization on flux behavior in forward osmosis[J]. Journal of Membrane Science, 2006, 284(1):237-247.
[16]	SANTORO C, AGRIOS A, PASAOGULLARI U, et al. Effects of gas diffusion layer(GDL) and micro porous layer(MPL) on cathode performance in microbial fuel cells(MFCs)[J]. Fuel & Energy Abstracts, 2011, 36(36):13096-13104.
[17]	SONG G H, MENG H. Numerical modeling and simulation of PEM fuel cells:progress and perspective[J]. Acta Mechanica Sinica, 2013, 29(3):318-334.
[18]	成瑞段.考虑水传递的质子交换膜燃料电池性能优化[D]. 大连:大连交通大学, 2015. CHENG R D. Optimization of PEMFC performance considering water transport[D]. Dalian:Dalian Jiaotong University, 2015.
[19]	王学科, 王树博, 潘元, 等. 阳极进气湿度对质子交换膜水含量及电流密度分布影响[J]. 化工学报, 2015, 66(S2):342-348. WANG X K, WANG S B, PAN Y, et al. Effect of anode inlet gas humidification on PEM water contents and current density distribution[J]. CIESC Journal, 2015, 66(S2):342-348.
[20]	张蕾.水面蒸发尺度效应及其与气象要素关系研究[D]. 西安:长安大学, 2015. ZHANG L. The relationship between the water surface evaporation scale effect and its meteorological parameters[D]. Xi'an:Chang'an University, 2015.
[21]	NOEON P, JAEWEON C, HONG S K, et al. Ion transport characteristics in nanofiltration membranes:measurements and mechanisms[J]. Journal of Water Supply:Research and Technology-Aqua, 2015, 59:179-190.
[22]	PERMANA D, ROSDIANTI D, ISHMAVANA S, et al. Preliminary investigation of electricity production using dual chamber microbial fuel cell (DCMFC) with Saccharomyces cerevisiae as biocatalyst and methylene blue as an electron mediator[J]. Procedia Chemistry, 2015, 17:36-43.
[23]	KIM B H, PARK H S, KIM H J, et al. Enrichment of microbial community generating electricity using a fuel-cell-type electrochemical cell[J]. Applied Microbiology & Biotechnology, 2004, 63(6):672-681.
[24]	OH S, MIN B, LOGAN B E. Cathode performance as a factor in electricity generation in microbial fuel cells[J]. Environmental Science & Technology, 2004, 38(18):4900-4905.
[25]	KAMIYA M, SAITO S, OHMINE I. Proton transfer and associated molecular rearrangements in the photocycle of photoactive yellow protein:role of water molecular migration on the proton transfer reaction[J]. Journal of Physical Chemistry B, 2007, 111(11):2948-2956.
[26]	PRIGOGINE I, RICE S A. Hydrogen bonds with large proton polarizability and proton transfer processes in electrochemistry and biology[M]//Advances in Chemical Physics, Volume 111. John Wiley & Sons, Inc., 2007:1-217.
[27]	EIGEN M. Proton transfer, acid-base catalysis, and enzymatic hydrolysis (Ⅰ):Elementary processes[J]. Angewandte Chemie International Edition, 2010, 3(1):1-19.
[28]	LI H, TANG Y, WANG Z, et al. A review of water flooding issues in the proton exchange membrane fuel cell[J]. Journal of Power Sourcer, 2008, 178(1):103-117.
[29]	CAJDA I, GREENMAN J, MELHHUISH C, et al. Water formation at the cathode and sodium recovery using microbial fuel cells(MFCs)[J]. Sustainable Energy Technologies & Assessments, 2014, 7:187-194.
[30]	LU G Q, LIU F Q, WANGA C Y. Water transport through Nafion 112 membrane in DMFCs[J]. Electrochemical and Solid-State Letters, 2005, 8(1):A1-A4.
[31]	胡琳彬, 李俊, 张亮, 等. 双室微生物燃料电池阴阳极间水传递特性[J]. 化工学报, 2017, 68(S1):150-154. HU L B, LI J, ZHANG L, et al. Water transfer between anode and cathode of dual chamber microbial fuel cell[J]. CIESC Journal, 2017, 68(S1):150-154.