| Enhanced elimination of V 5+ in wastewater using zero-valent iron activated by ball milling: The overlooked crucial roles of energy input and sodium chloride | |
Wang, Peng; Hu, Jian ; Wang, Yidong; Liu, Tingyi
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| 2022-08-05 | |
| Source Publication | JOURNAL OF HAZARDOUS MATERIALS
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| ISSN | 0304-3894 |
| Volume | 435Issue:0Pages:129050 |
| Abstract | The ball-milling technology, a highly efficient and cost-effective method, had excellent application prospects for overcoming passivation issues of normal zero-valent iron (ZVI) to enhance the decontamination efficiency. In this work, we investigated the effects and mechanisms of pH, process control agents (PCA), and main process parameters on the removal of V5+ using ball-milled zero-valent iron (ZVIbm). The results showed that ZVI was successfully activated due to mechanochemical action. The enhanced proton conductivity of ZVIbm leaded to the rapid production of more Fe2+, thereby resulting in an order of magnitude higher elimination of V5+ by ZVIbm than by ZVI under near-neutral conditions. In addition, the introduction of NaCl in the ball milling process could not only effectively alleviate the agglomeration phenomenon of ZVIbm, but also effectively enhance its activity. Unexpectedly, due to over-compaction and small size effects, excessive energy input weakened the reactivity of ZVIbm on V5+ elimination. Various characterization results confirmed that the removal of V5+ by ZVIbm was dominated by reduction and supplemented by adsorption. This work updated the basic understanding of the critical effects of process parameters and NaCl on ZVIbm in the remediation of vanadium-containing wastewater. |
| Department | 城市与区域生态国家重点实验室 ; 城市与区域生态国家重点实验室 |
| Keyword | OXIDATIVE-DEGRADATION AQUEOUS NITRATE ZEROVALENT IRON CR(VI) REMOVAL SULFIDATION REDUCTION PERFORMANCE MECHANISM ALUMINUM PERSULFATE |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/47245 |
| Collection | 城市与区域生态国家重点实验室 |
| Corresponding Author | Liu, Tingyi |
| Affiliation | 1.Tianjin Normal Univ, Tianjin Key Lab Water Resources & Environm, Tianjin 300387, Peoples R China 2.Tianjin Normal Univ, Sch Geog & Environm Sci, Tianjin 300387, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Peng,Hu, Jian,Wang, Yidong,et al. Enhanced elimination of V 5+ in wastewater using zero-valent iron activated by ball milling: The overlooked crucial roles of energy input and sodium chloride[J]. JOURNAL OF HAZARDOUS MATERIALS,2022,435(0):129050. |
| APA | Wang, Peng,Hu, Jian,Wang, Yidong,&Liu, Tingyi.(2022).Enhanced elimination of V 5+ in wastewater using zero-valent iron activated by ball milling: The overlooked crucial roles of energy input and sodium chloride.JOURNAL OF HAZARDOUS MATERIALS,435(0),129050. |
| MLA | Wang, Peng,et al."Enhanced elimination of V 5+ in wastewater using zero-valent iron activated by ball milling: The overlooked crucial roles of energy input and sodium chloride".JOURNAL OF HAZARDOUS MATERIALS 435.0(2022):129050. |
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| Enhanced elimination（6335KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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