Cow dung-derived biochars engineered as antibacterial agents for bacterial decontamination |
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Authors: | Quanfu Yao Qinggele Borjihan Huihui Qu Yixuan Guo Ziying Zhao Long Qiao Ting Li Alideertu Dong Ying Liu |
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Institution: | 1. College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China;2. College of Chemistry and Environment, Hohhot Minzu College, Hohhot 010051, China;3. College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China;4. Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, China |
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Abstract: | Disposal of the pollutants arising from farming cattle and other livestock threatens the environment and public safety in diverse ways. Herein, we report on the synthesis of engineered biochars using cow dung as raw material, and investigating these biochars as antibacterial agents for water decontamination. By coating the biochars with N-halamine polymer and loading them with active chlorine (i.e., Cl+), we were able to regulate them on demand by tuning the polymer coating and bleaching conditions. The obtained N-halamine-modified biochars were found to be extremely potent against Escherichia coli and Staphylococcus aureus. We also investigated the possibility of using these N-halamine-modified biochars for bacterial decontamination in real-world applications. Our findings indicated that a homemade filter column packed with N-halamine-modified biochars removed pathogenic bacteria from mining sewage, dairy sewage, domestic sewage, and artificial seawater. This proposed strategy could indicate a new way for utilizing livestock pollutants to create on-demand decontaminants. |
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Keywords: | Corresponding authors Cow dung Biochars Polymer coating Antibacterial agent Bacterial decontamination |
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