| Reduction of nitrobenzene by a zero-valent iron microspheres/polyvinylidene fluoride (mZVI/PVDF) membrane | |
Yang, Chengfeng ; Li, Kuiling; Xu, Lili; Wang, Zhiyong; Yu, Ling; Wang, Jun
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| 2022-02-01 | |
| Source Publication | SEPARATION AND PURIFICATION TECHNOLOGY
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| ISSN | 1383-5866 |
| Volume | 282Issue:0Pages:120006 |
| Abstract | Zero-valent iron microparticle (mZVI) is an excellent reductant for nitroaromatic compounds (NACs). However, it still faces severe challenges including easy agglomeration, oxidation, loss and difficult reuse. To overcome these drawbacks, a zero-valent iron microspheres/polyvinylidene fluoride (mZVI/PVDF) composite membrane using non-solvent induced phase separation (NIPS) method was constructed. Compared with bare mZVI, the mZVI/PVDF composite membrane limited agglomeration and oxidation of mZVI and slowed down the loss of mZVI and resultant iron (hydr)oxide, which made it maintain 100% nitrobenzene (NB) degradation in eight cycles. In the 1st use of mZVI/PVDF composite membrane, the NB degradation went through four steps dominated by adsorption, reduction by mZVI, formation of Fe2+ species associated with iron (hydr)oxide, reduction by Fe2+ species associated with iron (hydr)oxide. The captured iron (hydr)oxide by mZVI/PVDF composite membrane after 1st use accelerated the formation of Fe2+ species associated with iron (hydr)oxide, which made the NB degradation in 2nd-5th use faster than in 1st use. To promote NB diffusion, the cross-flow model was further applied and the NB removal amount was 11.63 times that in static model in 1st use. Our findings showed the NB degradation by mZVI/PVDF composite membrane in details, which would accelerate optimized use of mZVI. |
| Department | 环境水质学国家重点实验室 ; 环境水质学国家重点实验室 |
| Keyword | WASTE-WATER GROUNDWATER REMEDIATION NITROAROMATIC COMPOUNDS DECHLORINATION NANOPARTICLES DEGRADATION TRICHLOROETHYLENE REMOVAL NZVI FE(II) |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/47720 |
| Collection | 环境水质学国家重点实验室 |
| Corresponding Author | Wang, Jun |
| Affiliation | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, 18 Shuangqing Rd, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Natl Engn Res Ctr Ind Wastewater Detoxicat & Reso, Res Ctr Ecoenvironm Sci, 18 Shuangqing Rd, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Yang, Chengfeng,Li, Kuiling,Xu, Lili,et al. Reduction of nitrobenzene by a zero-valent iron microspheres/polyvinylidene fluoride (mZVI/PVDF) membrane[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2022,282(0):120006. |
| APA | Yang, Chengfeng,Li, Kuiling,Xu, Lili,Wang, Zhiyong,Yu, Ling,&Wang, Jun.(2022).Reduction of nitrobenzene by a zero-valent iron microspheres/polyvinylidene fluoride (mZVI/PVDF) membrane.SEPARATION AND PURIFICATION TECHNOLOGY,282(0),120006. |
| MLA | Yang, Chengfeng,et al."Reduction of nitrobenzene by a zero-valent iron microspheres/polyvinylidene fluoride (mZVI/PVDF) membrane".SEPARATION AND PURIFICATION TECHNOLOGY 282.0(2022):120006. |
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| Reduction of nitrobe（3445KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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