Effect of surfactant on urease-producing flora from waste activated sludge using microbially induced calcite precipitation technology to suppress coal dust

被引:7
作者
Zhao, Yanyun [1 ,2 ,3 ,4 ]
Liu, Wenhao [1 ,2 ,3 ,4 ]
Hu, Xiangming [1 ,2 ,3 ,4 ]
Li, Xiao [1 ,2 ,3 ,4 ]
Wang, Chengcheng [1 ]
Yu, Yiyun [1 ]
Zhang, Jing [1 ]
机构
[1] Shandong Univ Sci & Technol, Coll Safety & Environm Engn, Qingdao 266590, Peoples R China
[2] Shandong Univ Sci & Technol, State Key Lab Min Disaster Prevent & Control Shand, Qingdao 266590, Peoples R China
[3] Shandong Univ Sci & Technol, Minist Sci & Technol, Qingdao 266590, Peoples R China
[4] Shandong Univ Sci & Technol, Inst Yellow River Delta Earth Surface Proc & Ecol, Qingdao 266590, Peoples R China
基金
中国国家自然科学基金;
关键词
Dust suppression; MICP; Urease-producing flora; Surfactant; Microbiome analysis; PERFORMANCE; OPTIMIZATION; CONCRETE;
D O I
10.1016/j.envres.2023.116941
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The wettability of microbially induced calcite precipitation (MICP) is a challenge in dust suppression. Herein, the tolerance of urease-producing flora to surfactants was investigated. The optimal tolerance concentrations of the urease-producing flora to sodium dodecylbenzene sulfonate (SDBS, anionic surfactant), alkyl polyglycoside (APG, non-ionic surfactant), and cocamidopropyl betaine (CAB, zwitterionic surfactant), and were 0.2%, 0.1%, and 0.05%. The cetyltrimethylammonium bromide (CTAB, cationic surfactant) inhibited urease production by urease-producing flora. The mineralization products of SDBS, APG, and CAB treatments were all transformed into calcite. The wind resistance test showed that the mass loss of all samples is less than 0.1%. The rain resistance and hardness tests showed that 0.2% SBDS had the best effect, followed by 0.1% APG and 0.05% CAB, and finally, No surfactants. Microbiome analysis showed that the abundance of Sporosarcina and Unclassified_bacillaceae reduced, and the intense competition between Paenalcaligenes and Sporosarcina are essential reasons for reducing urease activity. SDBS and APG could reduce the pathogenic risk of microbial dust suppressants. This study will facilitate the practical application of microbial dust suppressants.
引用
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页数:12
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