Removal of p-Nitrophenol in Aqueous Solution by Mixed Fe0/(Passivated Fe0) Fixed Bed Filters

被引：12
作者：
Ren, Yi [1 ]
Li, Jun [1 ]
Yuan, Donghai [2 ]
Lai, Bo [1 ]
机构：
[1] Sichuan Univ, Sch Architecture & Environm, Dept Environm Sci & Engn, Chengdu 610065, Sichuan, Peoples R China
[2] Beijing Univ Civil Engn & Architecture, Beijing Climate Change Response Res & Educ Ctr, Key Lab Urban Stormwater Syst & Water Environm, Minist Educ, Beijing 100037, Peoples R China
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2017年 / 56卷 / 33期
基金：
中国国家自然科学基金;
关键词：
ZERO-VALENT-IRON; PERMEABLE REACTIVE BARRIERS; FE/CU BIMETALLIC PARTICLES; WASTE-WATER; GROUNDWATER REMEDIATION; GRANULAR IRON; DECHLORINATION; DEGRADATION; 1,1,1-TRICHLOROETHANE; CHLOROPHENOLS;
D O I：
10.1021/acs.iecr.7b02082
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Fe-0 particles were passivated by concentrated nitric acid, and a Fe-0/(passivated Fe-0) system was setup for p-nitrophenol (PNP) removal. First, the characteristics of passivated Fe-0 particles were analyzed. The results suggest that the passivated Fe-0 particles have an iron oxide passivation film on their surface with inertness and high electrode potential (0.57 V). Besides, the optimal conditions were obtained according to the significant parameters optimization. In addition, control experiments were set up to investigate the advantage of reactivity and operational life of the Fe-0/(passivated Fe-0) system, and the results confirmed that the new system had higher reactivity and longer operational life. Meanwhile, the reaction mechanism of Fe-0/(passivated Fe-0) system for PNP removal was proposed. Finally, with an analysis of preparation cost, the Fe-0/(passivated Fe-0) system could also be seemed as a cost-effective technology. Consequently, the developed Fe-0/(passivated Fe-0) system in this study is a promising technology for treatment of contaminated water.
引用
收藏
页码：9293 / 9302
页数：10
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