摘要
采用厌氧污泥对单基质吡啶及苯酚共存下的吡啶进行降解,并研究其动力学的差异。实验结果表明:厌氧污泥可以同时降解苯酚和吡啶;与单基质相比,共基质下苯酚的存在抑制了厌氧污泥对吡啶的去除,当苯酚初始浓度增加至一定值时,这种抑制作用逐渐减弱。无论是单基质还是苯酚共基质,吡啶的降解均遵循零级反应动力学,但后者吡啶的降解速率常数与前者相比,数值明显减小。在化学需氧量与氮的质量浓度比值ρ(COD)/ρ(N)≈40、pH 7.5、35℃的条件下单基质吡啶厌氧降解效果最好,经过103h的降解,其降解率可达到88%以上。
Degradation characteristics and kinetics difference of pyridine were studied by anaerobic sludge without or with phenol.The results show that while the anaerobic sludge could degrade phenol and pyridine simultaneously,the phenol inhibits the removal of the pyridine.This inhibition decreases when initial phenol concentration increases to a certain value.The two degradation processes of pyridine both follow zero order kinetics equation without or with phenol,whereas the latter＇s degradation rate constant is much lower than the former＇s.The optimal pyridine degradation by anaerobic sludge without phenol is obtained,whenρ（COD）/ρ（N）,pH and temperature are 40,7.5and 35℃,respectively,with the rate more than 88%after 103 hof degradation.
出处
《太原理工大学学报》
CAS
北大核心
2015年第3期294-297,共4页
Journal of Taiyuan University of Technology
基金
国家自然科学基金资助项目:含氮杂环化合物在厌氧同时反硝化产甲烷体系中的降解性能研究(51378330)
关键词
厌氧污泥
降解动力学
吡啶
苯酚
anaerobic sludge
degradation kinetics
pyridine
phenol
