期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 383, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2019.121176
关键词
Waste activated sludge (WAS); Anaerobic digestion; Exogenous pollutants; Dose-dependent influences; Methanogens
资金
- National Natural Science Foundation of China [51708171]
- Fundamental Research Funds for the Central Universities [2019B14314]
- China Postdoctoral Science Foundation [2018M630508, 2019T120390]
- State Key Laboratory of Pollution Control and Resource Reuse Foundation, China [PCRRF17019]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), China
Anaerobic digestion is a promising approach for waste activated sludge (WAS) disposal. However, a wide range of exogenous pollutants (e.g. heavy metals, nanoparticles) exists in WAS and their influences on anaerobic digestion are neglected. This study investigates the correlations between exogenous pollutants and anaerobic digestion performance. The results indicate that exogenous pollutants exhibit dose-dependent influences on WAS digestion. Most of the pollutants improve the performance of anaerobic digestion by partially or wholly promoting the hydrolysis, acidification and methanogenesis processes at low dose, but exhibit negative effects at high levels due to their toxicity. Generally, methanogens are more vulnerable than those hydrolytic and acidogenic bacteria. Poly-aluminum chloride and polyacrylamide show strong inhibition on WAS digestion, which are primarily attributed to their physical enmeshments of organic matters in WAS. The synergistic effects of different mixed pollutants and the mitigating strategies for typical pollutants inhibition deserve more attention in light of WAS anaerobic digestion.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据