Advanced biochar-based materials for specific antibiotics removal from hospital wastewater via adsorption and oxidative degradation - Details

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Abstract：

Antibiotics　in　hospital　wastewater　has　become　a　critical　issue　due　to　their　potential　risks　to　human　health　and　ecosystems.　Biochar　as　a　cost-effective　and　environmental-friendly　carbon　material　has　been　employed　for　removing　antibiotics.　This　article　gives　a　holistic　view　of　the　properties　of　advanced　biochar-based　materials　and　clarifies　mechanisms　on　removal　of　specific　antibiotics　from　hospital　wastewater.　The　increased　pyrolysis　temperature　prepares　the　modified　biochar　with　higher　porosity　and　larger　specific　surface　for　enhancing　adsorption.　The　metal-modified　biochar　possesses　abundant　functional　groups,　limits　the　leaching　of　metal　ions,　and　increases　the　conductivity　for　improving　activation　of　advanced　oxidation　process　(AOP).　Adsorption　is　significantly　affected　by　the　pyrolysis　temperature,　solution　pH,　and　properties　of　modified　biochar　and　antibiotics.　The　metal-modified　biochar-assisted　AOP　can　effectively　degrade　the　pollutants　via　generating　more　reactive　oxygen　species.　Weak　acidic　and/or　weak　alkaline　condition　promotes　the　degradation　process　in　persulfate　and　peroxymonosulfate　systems　or　during　electrochemical　oxidation　process.　Antibiotics　removal　at　a　wide　pH　range　(3−11)　can　be　achieved　using　Fenton-like　and　photo-Fenton　systems　with　the　presence　of　metal-modified　biochar.　Future　research　should　focus　on　development　of　novel　biochar　with　high　reusability　and　great　capability　in　removing　a　broad　range　of　specific　antibiotics.　©　2024　The　Authors

Keyword：

Alkalinity Antibiotics Biodegradation Catalytic cracking Degradation Electrochemical oxidation Reactive oxygen species Reusability

Community：

[ 1 ] [Xue, Haotian]State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing; 100012, China
[ 2 ] [Deng, Lijuan]Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney; NSW; 2007, Australia
[ 3 ] [Kang, Dejun]College of Civil Engineering of Fuzhou University, Fuzhou University, Fuzhou; 350108, China
[ 4 ] [Zhao, Ying]State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing; 100012, China
[ 5 ] [Zhang, Xinbo]Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin; 300384, China
[ 6 ] [Liu, Ying]Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin; 300384, China
[ 7 ] [Chen, Hanyang]College of Civil Engineering of Fuzhou University, Fuzhou University, Fuzhou; 350108, China
[ 8 ] [Ngo, Huu Hao]Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney; NSW; 2007, Australia
[ 9 ] [Guo, Wenshan]Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney; NSW; 2007, Australia