葡萄糖、淀粉、苯酚电化学氧化耦合制氢行为

Glucose,starch,and phenol electrochemical oxidation coupled with hydrogen production

电化学氧化处理有机废水的过程中阳极区降解废水中的有机物,同时在阴极耦合制氢回收清洁能源。选取苯酚、葡萄糖和淀粉为研究对象,研究了相同COD浓度不同有机物的降解效果、产氢量以及他们之间的关系。研究结果表明不同有机物的降解效果由于结构和性质的不同而不同,产氢量也随之变化。苯酚降解效果最好,产氢量和产氢速率最大。对苯酚降解动力学进一步研究表明苯酚的降解是一级动力学过程,在5 V和10 V条件下的反应平衡常数分别为0.01498 h 1和0.1202 h 1,反应速率随电压升高而增大。研究结果为不同类型的有机废水选择合理的处理工艺提供了理论依据。

Hydrogen production coupled with the electrochemical treatment of organic wastewater at the anode was investigated. Phenol, glucose, starch were used to investigate the degradation of organic matter, hydrogen production, and their relationship. The results indicated that degradation of organic matter was different due to the structure and properties of organic matter and hydrogen production changed as well. Meanwhile, degradation of phenol was effective, and hydrogen production volume and rate were higher than glucose and starch. Kinetic study of phenol showed a first order model, and the reaction constants at 5 V and 10 V were 0.01498 h-land 0.1202 h-1 respectively, which increased with the increase of voltage. These results could provide theoretical foundations for rational treatments of different organic wastewaters.