电解电压对乙酸单池电解协助发酵产氢的影响  

EFFECT OF APPLIED VOLTAGE ON BIO-HYDROGEN PRODUCTION FROM ACETIC ACID USING A SINGLE-CHAMBER ELECTROLYTICALLY ASSISTED BIO-HYDROGEN PRODUCTION DEVICE

作　　者：李建昌[1,2] 孙可伟[1] 杨斌[2] 王文根[2] 尹芳[2] 张无敌[2] 

机构地区：[1]昆明理工大学固体废弃物资源化国家工程中心,昆明650031 [2]可再生能源材料先进技术与制备教育部重点实验室云南师范大学,昆明650092

出　　处：《太阳能学报》2011年第6期797-801,共5页Acta Energiae Solaris Sinica

基　　金：云南省自然科学基金(2009CD044);云南师范大学省农村能源工程重点实验室基金(KJ2008002);云南省中青年学术和技术带头人后备人才培养计划(2005py01-16)

摘　　要：采用单池电解协助发酵产氢装置,以厌氧活性污泥为接种物,以产酸发酵末端产物乙酸为底物,在35℃下,研究电解电压对乙酸的微生物电化学辅助产氢的影响。结果表明:电解电压是电解协助发酵制氢的主要控制参数,当电解电压约为250mV时,电解电流开始出现,随后有气体产生,当电解电压从0.8V升至1.0V时,氢气含量从15%升至30%,因此乙酸单池电解协助产氢的适宜电压为0.8～1.0V;在恒定电解电压1.0V下,由于有甲烷的形成,乙酸的氢转化率仅为0.039mol H2/mol乙酸。A single-cell electrolytically assisted device for bio-hydrogen production was used to investigate the effect of applied voltage on electrochemically assisted bio-hydrogen production from acetic acid by using anaerobic activated sludge as inoculum and sodium acetate as substrate, at the temperature of 35℃ and anaerobic condition. The results showed that applied voltage was a main control parameter. When the value of applied voltage was about 250mV, current began to occur, and then bio-gas was produced. Until applied voltage went up from 0.8V to 1.0V, hydrogen content changed from 15% to 30%. Hence, it was suitable for bio-hydrogen production from acetic acid at an applied voltage of 0.8V to 1.0V. However, when investigation of hydrogen potential was futher carried out under a constant applied voltage of 1.0V, the hydrogen potential was only 0. 039mol H2/mol acetate due to the forming of methane.

关 键 词：电解协助 挥发性有机酸 电活性微生物 发酵产氢 

分 类 号：TK6[动力工程及工程热物理—生物能]