常州大学学报（自然科学版）2024，Vol.36Issue(6)：44-53,10.DOI:10.3969/j.issn.2095-0411.2024.06.006
中温厌氧发酵中初始pH和尿酸质量浓度对氨氮释放规律的影响
Effect of initial pH and concentration of uric acid on ammonium emission during mesophilic anaerobic digestion
摘要
Abstract
In the current research,batch assays were carried out under mesophilic condition to explore the methanogenic potential and kinetics from acetic acid with different initial pH and concentrations of uric acid.Ammonia nitrogen released from uric acid was further analyzed to demonstrate the possibility that the uric acid degradation process could be inhibited by adjusting initial pH.Results showed that uric acid could degrade to ammonia nitrogen rapidly under normal digested conditions.Methanogenesis activity of acetic acid was gradually inhibited associated with the increase of initial concentrations of u-ric acid(0—18 g/L)and ammonium concentration.At initial pH of 6.75 and 6.50,about 18％—20％of uric acid was inhibited and could not degrades to ammonia nitrogen,which could improve the organ-ic loading rate by around 22％—25％,and the methanogenic potential of acetic acid was almost no lim-ited,which effectively alleviated the inhibition of ammonia nitrogen.关键词
厌氧发酵/尿酸/氨抑制/初始pHKey words
anaerobic digestion/uric acid/ammonia inhibition/initial pH分类
资源环境引用本文复制引用
尹冬敏,夏禧龙,毛洪刚,朱李霞,任建军..中温厌氧发酵中初始pH和尿酸质量浓度对氨氮释放规律的影响[J].常州大学学报（自然科学版）,2024,36(6):44-53,10.基金项目
常州大学科研启动基金资助项目(ZMF22020022). （ZMF22020022）
