{"title":"微波辐照改性红叶石楠生物炭回收铀伴生煤矿废水中的铀(VI","authors":"Yiqing Yang, Shimi Li, Dianxin Li, Siyou Xiao, Wenxian Guo, Jiangang Liu, Ziqi Nie","doi":"10.1007/s10967-024-09877-w","DOIUrl":null,"url":null,"abstract":"<div><p>Developing efficient adsorbents is key to mitigate radioactive contamination in coal mine wastewater and improve uranium extraction. This study processed local <i>Photinia</i> × <i>fraseri Dress</i> into biochar via high-temperature carbonization. Microwave irradiation yielded modified biochar, then treated under alkaline conditions and dilute sulfuric acid to produce PDC-M-K and PDC-M-H. The study found that PDC-M-K and PDC-M-H had U(VI) adsorption capacities of 79.6 and 116.3 mg U/g ads, with utilization rates of 69.3% and 75.6%, respectively. Their adsorption selectivity for U(VI) was 66.5% and 72.8%. Indicating that modified biochar effectively adsorbs U(VI) from wastewater, providing a reference for future studies.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 1","pages":"11 - 26"},"PeriodicalIF":1.6000,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Recovery of U(VI) from uranium-associated coal mine wastewater by microwave irradiation-modified Photinia × fraseri Dress biochar\",\"authors\":\"Yiqing Yang, Shimi Li, Dianxin Li, Siyou Xiao, Wenxian Guo, Jiangang Liu, Ziqi Nie\",\"doi\":\"10.1007/s10967-024-09877-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Developing efficient adsorbents is key to mitigate radioactive contamination in coal mine wastewater and improve uranium extraction. This study processed local <i>Photinia</i> × <i>fraseri Dress</i> into biochar via high-temperature carbonization. Microwave irradiation yielded modified biochar, then treated under alkaline conditions and dilute sulfuric acid to produce PDC-M-K and PDC-M-H. The study found that PDC-M-K and PDC-M-H had U(VI) adsorption capacities of 79.6 and 116.3 mg U/g ads, with utilization rates of 69.3% and 75.6%, respectively. Their adsorption selectivity for U(VI) was 66.5% and 72.8%. Indicating that modified biochar effectively adsorbs U(VI) from wastewater, providing a reference for future studies.</p></div>\",\"PeriodicalId\":661,\"journal\":{\"name\":\"Journal of Radioanalytical and Nuclear Chemistry\",\"volume\":\"334 1\",\"pages\":\"11 - 26\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2024-11-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Radioanalytical and Nuclear Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10967-024-09877-w\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Radioanalytical and Nuclear Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10967-024-09877-w","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
Recovery of U(VI) from uranium-associated coal mine wastewater by microwave irradiation-modified Photinia × fraseri Dress biochar
Developing efficient adsorbents is key to mitigate radioactive contamination in coal mine wastewater and improve uranium extraction. This study processed local Photinia × fraseri Dress into biochar via high-temperature carbonization. Microwave irradiation yielded modified biochar, then treated under alkaline conditions and dilute sulfuric acid to produce PDC-M-K and PDC-M-H. The study found that PDC-M-K and PDC-M-H had U(VI) adsorption capacities of 79.6 and 116.3 mg U/g ads, with utilization rates of 69.3% and 75.6%, respectively. Their adsorption selectivity for U(VI) was 66.5% and 72.8%. Indicating that modified biochar effectively adsorbs U(VI) from wastewater, providing a reference for future studies.
期刊介绍：
An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.
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