[1]尹冬敏,夏禧龙,毛洪刚,等.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(06):44-53.[doi:10.3969/j.issn.2095-0411.2024.06.006]
　YIN Dongmin,XIA Xilong,MAO Honggang,et al.Effect of initial pH and concentration of uric acid on ammonium emission during mesophilic anaerobic digestion[J].Journal of Changzhou University(Natural Science Edition),2024,36(06):44-53.[doi:10.3969/j.issn.2095-0411.2024.06.006]
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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()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第36卷
期数:
2024年06期
页码:
44-53
栏目:
环境科学与工程
出版日期:
2024-12-03

文章信息/Info

Title:
Effect of initial pH and concentration of uric acid on ammonium emission during mesophilic anaerobic digestion
文章编号:
2095-0411(2024)06-0044-10
作者:
尹冬敏1; 2; 夏禧龙1; 2; 毛洪刚2; 3; 朱李霞2; 3; 任建军1; 2
1.常州大学 城乡矿山研究院, 江苏 常州 213164; 2.常州市生物质绿色安全高值利用技术重点实验室常州大学, 江苏 常州 213164; 3.常州大学 药学院, 江苏 常州 213164
Author(s):
YIN Dongmin1; 2;  XIA Xilong1; 2;  MAO Honggang2; 3;  ZHU Lixia2; 3;  REN Jianjun1; 2
(1.Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China; 2.Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Changzhou University, Changzhou 213164, China; 3.School of Pharmacy, Changzhou University, Changzhou 213164, China)
关键词:
厌氧发酵;  尿酸;  氨抑制;  初始pH
Keywords:
anaerobic digestion;  uric acid;  ammonia inhibition;  initial pH
分类号:
X 787
DOI:
10.3969/j.issn.2095-0411.2024.06.006
文献标志码:
A
摘要:
以乙酸为碳源、尿酸为氮源,开展不同尿酸质量浓度和不同初始pH条件下的乙酸产甲烷潜能与动力学试验,探究中温条件下尿酸的氨氮释放规律及其对产甲烷过程的影响。结果显示,未调节发酵pH条件下,尿酸会迅速降解生成氨氮,乙酸产甲烷过程的抑制程度随尿酸质量浓度的升高(0～18 g/L)而逐渐升高。调节发酵初始pH后,尿酸的降解受到不同程度的抑制,初始pH为6.75和6.50时,18%～20%的尿酸受到抑制而未降解为氨氮,发酵系统的负荷可提高22%～25%,有效缓解氨氮抑制。
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 uric 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 organic loading rate by around 22%—25%, and the methanogenic potential of acetic acid was almost no limited, which effectively alleviated the inhibition of ammonia nitrogen.

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备注/Memo

备注/Memo:
收稿日期: 2024-08-05。
基金项目: 常州大学科研启动基金资助项目(ZMF22020022)。
作者简介: 尹冬敏(1993—), 女, 黑龙江齐齐哈尔人, 博士, 讲师。通信联系人: 任建军, E-mail: rjj@cczu.edu.cn
更新日期/Last Update: 1900-01-01