新型磁性生物炭活化过一硫酸盐降解双酚A
Novel magnetic biochar degrades BPA by activating PMS
王善鹏 1崔康平 1刘彤 1聂贤宝 2徐正江2
作者信息
- 1. 合肥工业大学资源与环境工程学院,安徽合肥 230009
- 2. 安徽曙光化工集团有限公司,安徽安庆 246003
- 折叠
摘要
文章使用溶胶-凝胶燃烧法制备磁性生物炭CuFe2O4@SBC,并将其用于活化过一硫酸盐(peroxymo-nosulfate,PMS)降解双酚A(bisphenol,BPA).通过X射线衍射(X-ray diffraction,XRD)分析、扫描电子显微镜(scanning electron microscope,SEM)、傅里 叶变换红外光谱(Fourier transform infrared spectroscopy,FT-IR)和X射线光电子能谱(X-ray photoelectron spectroscopy,XPS)分析等表征方法探究该复合材料的理化特性,结果表明,CuFe2O4稳定地负载在生物炭表面,且复合材料表面有大量的含氧官能团,如O=C=O、C-O-C和—OH.通过批次试验,探究该材料在不同条件下活化PMS降解BPA的效果,并进行伪一级动力学拟合.结果表明,BPA的去除率随着磁性生物炭投加量、PMS浓度、温度和pH值的增加而增加.通过重复利用试验发现,磁性生物炭在第3轮催化降解试验中对BPA的降解率仍能达到91％.此外,通过淬灭试验发现,1O2、·OH、SO4-·和O2-·都参与了 BPA的降解,其中1O2是最主要的活性物种.
Abstract
In this work,magnetic CuFe2O4@SBC composites were prepared by sol-gel combustion method and used to degrade bisphenol A(BPA)by activating peroxymonosulfate(PMS).X-ray dif-fraction(XRD),scanning electron microscope(SEM),Fourier transform infrared spectroscopy(FTIR)and X-ray photoelectron spectroscopy(XPS)were used to investigate the physicochemical activities of the composite materials.The results showed that CuFe2O4 was stably loaded on the surface of bio-char,and the composite materials had abundant oxygen-containing functional groups such as O=C=O,C-O-C and-OH.By batch experiments,the degradation effects of BPA by activating PMS were investigated under different conditions,and pseudo-first-order kinetic fitting was performed.The results showed that the removal rate of BPA increased with the increase of magnetic biochar dos-age,PMS dosage,temperature and pH value.It was found that the magnetic biochar could still de-grade 91％of BPA in the third round of catalytic degradation tests.In addition,1 O2,·OH,SO4-· and O2-·were found to be involved in the degradation of BPA through quenching experiments,and 1 O2 was the most effective species.
关键词
双酚A(BPA)/磁性生物炭/高级氧化技术/过一硫酸盐(PMS)/协同作用Key words
bisphenol A(BPA)/magnetic biochar/advanced oxidation process/peroxymonosulfate(PMS)/synergy引用本文复制引用
基金项目
国家重点研发计划资助项目(2019YFC0408500)
安徽省科技重大专项资助项目(201903a07020009)
出版年
2024
NETL
NSTL
维普
万方数据