南华大学学报（自然科学版）2024，Vol.38Issue(6)：36-45,77,11.DOI:10.19431/j.cnki.1673-0062.2024.06.005
生物炭负载纳米氯磷灰石去除水中U(VI)的性能研究
Study on the Removal of U(VI)by Biochar Loaded Nano-chlorapatite Composited Materials
麦颖清 1史妮静 1谢水波 2李绪忠3
作者信息
- 1. 南华大学 土木工程学院,湖南 衡阳 421001
- 2. 南华大学 土木工程学院,湖南 衡阳 421001||南华大学 污染控制与资源化技术湖南省重点实验室,湖南 衡阳 421001
- 3. 长沙有色冶金设计研究院有限公司,湖南 长沙 410000
- 折叠
摘要
Abstract
To treat the low-concentration uranium-containing wastewater,three kinds of biochar loaded nano-chlorapatite composited materials(nCLAP/BC)were prepared by co-precipitation method using pine shavings,discarded rice straw and peanut shells as raw materials.Scanning electron microscopy(SEM)and X-ray energy dispersive spectrum(EDS)were used to characterize pine shavings biochar loaded nano-chlorapatite composited material(nCLAP/BC-1).The effects of different factors on the adsorption process of U(VI)by the three were investigated.The results showed that compared with the corresponding original biochar(BC),the three types of nCLAP/BC had much greater uranium removal performance.Under conditions of nCLAP/BC dosage of 0.1 g/L,pH of 4 and the U(VI)initial concentration of 5 mg/L,the removal rate for U(VI)of three types of nCLAP/BC were all above99%.The adsorption of U(VI)is a chemical adsorp-tion dominated by a monolayer and a spontaneous endothermic process.Among the three,nCLAP/BC-1 had the best removal performance on the removal of U(VI).The character-ization results of X-ray energy dispersive spectrum(EDS)and X-ray photoelectron spec-troscopy(XPS)showed that the process of removing U(VI)by nCLAP/BC-1 was com-plex,involving electrostatic interaction,dissolution precipitation,ion exchange and com-plexation of functional groups such as surface hydroxyl groups.关键词
U(VI)/生物炭/纳米氯磷灰石/生物炭负载纳米氯磷灰石Key words
U(VI)/biochar/nano-chlorapatite/biochar loaded nano-chlorapatite分类
资源环境引用本文复制引用
麦颖清,史妮静,谢水波,李绪忠..生物炭负载纳米氯磷灰石去除水中U(VI)的性能研究[J].南华大学学报（自然科学版）,2024,38(6):36-45,77,11.
