Fate, toxicity and effect of triclocarban on the microbial community in wastewater treatment systems was written by Wang, Hao;Yun, Hui;Li, Minghan;Cui, Hanlin;Ma, Xiaodan;Zhang, Yanqing;Pei, Xuanyuan;Zhang, Liying;Shi, Ke;Li, Zhiling;Liang, Bin;Wang, Aijie;Zhou, Jizhong. And the article was included in Journal of Hazardous Materials in 2022.Computed Properties of C13H9Cl3N2O This article mentions the following:
Triclocarban (TCC), one of the typical antimicrobial agents, is a contaminant of emerging concern commonly found in high concentration in water environments. However, the fate and toxicity of TCC in wastewater treatment systems remain poorly understood. Here, we investigated how TCC impacts COD and inorganic nitrogen transformation in a hydrolytic anaerobic-anoxic/oxic process. In the anaerobic section, the transformation of TCC was dominated by reductive dechlorination and supplemented by two amid bonds hydrolysis. In the anoxic and oxic sections, the hydrolysis of amid bonds dominated. The toxicity was reduced after the treatment (IC50 from 0.09 to 0.54). TCC inhibited NH+4-N removal in the anaerobic section and led to the NO–3-N accumulation (2.84-4.13 mg/L) after treatment, with the abundance of N-removal bacteria decreased by 6%. Furthermore, the original ecol. niche was gradually replaced by TCC-resistant/degradative bacteria, formating new microbial modules to resist the TCC stress. Importantly, fourteen genera including Methanosaeta, Longilinea, Dokdonella and Mycobacterium as potential bioindicators warning TCC and its intermediates were proposed. Overall, this study provides new insights into the fate of TCC in biol. wastewater treatment systems and suggests a great importance for TCC control to ensure the health and resilience of ecosystems. In the experiment, the researchers used many compounds, for example, 1-(4-Chlorophenyl)-3-(3,4-dichlorophenyl)urea (cas: 101-20-2Computed Properties of C13H9Cl3N2O).
1-(4-Chlorophenyl)-3-(3,4-dichlorophenyl)urea (cas: 101-20-2) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Computed Properties of C13H9Cl3N2O
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics