Bench- and pilot-scale studies on the removal of pesticides from water by VUV/UV process
文献类型：期刊论文
| 作者 | Li, Wentao; Li, Mengkai ; Yang, Laxiang; Qiang, Zhimin; Jiang, Yuejie
|
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2018-06-15 |
| 卷号 | 342页码:155-162 |
| 关键词 | Pesticide degradation VUV/UV Technical and economic assessment Small-scale water treatment |
| ISSN号 | 1385-8947 |
| 文献子类 | Article |
| 英文摘要 | As an advanced oxidation process, vacuum ultraviolet/ultraviolet (VUV/UV) process has recently gained increasing attention in water treatment, but assessment of its technical and economic feasibility for pesticide removal has rarely been conducted. This study investigated the degradation of five typical pesticides, including aldicarb (ALD), alachlor (ALA), chloroneb (CHL), methiocarb (MET) and atrazine (ATR), by VUV/UV under simulated water treatment conditions at both bench-and pilot-scales. Bench-scale tests showed that pesticide degradation followed pseudo-first-order kinetics and all pesticides were degraded by >90% at a VUV fluence of 12 mJ cm(-2). The second-order reaction rate constants of ALD, ALA, CHL, MET and ATR with HO% were 7.57x10(9), 4.89x10(9), 2.57x10(9), 3.81x10(9) and 2.38x10(9)M(-1) s(-1), respectively. Solution pH had varying influences on the degradation of different pesticides by VUV/UV. Inorganic anions (Cl-, NO3-, HCO3-) and natural organic matter (NOM) inhibited pesticide degradation by scavenging HO%, but SO(4)(2-)slightly promoted pesticide degradation. The toxicity of pesticide solutions was reduced by 33.7% to 74.8% after the VUV/UV treatment. In a long-term (80 d) operation of the pilot reaction system using a sand-filtered water, the stable performance with acceptable energy consumption (0.27-1.52 kWhm(-3) Order(-1)) suggested a good application potential of the VUV/UV process for pesticide removal in small-scale water treatment. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/41321]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Li, Wentao,Li, Mengkai,Yang, Laxiang,et al. Bench- and pilot-scale studies on the removal of pesticides from water by VUV/UV process[J]. CHEMICAL ENGINEERING JOURNAL,2018,342:155-162. |
| APA | Li, Wentao,Li, Mengkai,Yang, Laxiang,Qiang, Zhimin,&Jiang, Yuejie.(2018).Bench- and pilot-scale studies on the removal of pesticides from water by VUV/UV process.CHEMICAL ENGINEERING JOURNAL,342,155-162. |
| MLA | Li, Wentao,et al."Bench- and pilot-scale studies on the removal of pesticides from water by VUV/UV process".CHEMICAL ENGINEERING JOURNAL 342(2018):155-162. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。