Wu, Jun1,2,3; Sun, Qi4; Lu, Jian4
发表期刊JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
2020-10-01
卷号8期号:5页码:10
关键词WasteBischofiteRecyclingCatalyticOzonationSulfathiazoleMagnetic core-shell particles
DOI10.1016/j.jece.2020.104318
通讯作者Lu, Jian(jlu@yic.ac.cn)
英文摘要This study investigated the possibility of recycling bischofite which was discarded with a great quantity from salt industry as catalyst for ozonation of sulfathiazole. Bischofite was used to successfully synthesize nano-scaled magnetic core-shell Fe3O4@SiO2@Mg(OH)(2) which could be easily separated for reuse by an external magnetic field. Element mapping showed that this composite microsphere was composed of a Fe3O4 core, a SiO2 shell and a Mg(OH)(2) outer shell. Reaction rate, operation conditions, mineralization, and antibacterial activity of catalytic ozonation of sulfathiazole using Fe3O4@SiO2@Mg(OH)(2) were investigated. The reaction rate constant of Fe3O4@SiO2@Mg(OH)(2) treatment was almost twice that of single ozonation. Operation conditions including catalyst dosage of 0.15 g/L, pH of 7.0, and temperature of 25 degrees C were optimal for removal of sulfathiazole by catalytic ozonation. Over 99.0% of sulfathiazole could be removed within 10 min by catalytic ozonation with Fe3O4@SiO2@Mg(OH)(2). About 99.0% of sulfathiazole could be removed by catalytic ozonation with Fe3O4@SiO2@Mg(OH)(2) that was reused 4 times. About 40.1% of total organic carbon was removed within 60 min by catalytic ozonation with Fe3O4@SiO2@Mg(OH)(2) to exhibit good mineralization feature for sulfathiazole. Catalytic ozonation played important role in affecting antibacterial activity of sulfathiazole. Initial concentration of sulfathiazole and inorganic ions had negative effect on removal efficiency. Sulfathiazole was degraded through cleavage and oxidation processes during catalytic ozonation by Fe3O4@SiO2@Mg(OH)(2). This study provides a new core-shell magnetic material for antibiotic pollution control and a promising new application pathway for using waste bischofite.
资助机构National Natural Science Foundation of China; Taishan Scholars Program of Shandong Province; Science and Technology Service Network Initiative of the Chinese Academy of Sciences; Youth Innovation Team Project for Talent Introduction and Cultivation in Universities of Shandong Province
收录类别SCI
语种英语
关键词[WOS]PHOTOCATALYTIC DEGRADATION; REMOVAL; WATER; SULFATHIAZOLE; MICROSPHERES; SULFONAMIDES; HYDROXIDE; OXIDATION; TOXICITY; PRODUCTS
研究领域[WOS]Engineering
WOS记录号WOS:000575531600019
引用统计被引频次：3[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/28429
专题中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
中科院海岸带环境过程与生态修复重点实验室
通讯作者Lu, Jian作者单位1.Harbin Engn Univ, Yantai Res Inst, Yantai 265501, Shandong, Peoples R China
2.Harbin Engn Univ, Grad Sch, Yantai 265501, Shandong, Peoples R China
3.Harbin Engn Univ, Coll Mat & Chem Engn, Harbin 150001, Heilongjiang, Peoples R China
4.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc,YICCAS, Yantai 264003, Shandong, Peoples R China
推荐引用方式
GB/T 7714Wu, Jun,Sun, Qi,Lu, Jian. Synthesis of magnetic core-shell Fe3O4@SiO2@Mg(OH)(2) composite using waste bischofite and its catalytic performance for ozonation of antibiotics[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2020,8(5):10.
APAWu, Jun,Sun, Qi,&Lu, Jian.(2020).Synthesis of magnetic core-shell Fe3O4@SiO2@Mg(OH)(2) composite using waste bischofite and its catalytic performance for ozonation of antibiotics.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,8(5),10.
MLAWu, Jun,et al."Synthesis of magnetic core-shell Fe3O4@SiO2@Mg(OH)(2) composite using waste bischofite and its catalytic performance for ozonation of antibiotics".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 8.5(2020):10.
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