Characteristics of p-nitrophenol removal by SAT system with iron oxide coated sands

被引：0
|
作者：
Wen Y. [1 ]
Yang Y. [1 ,2 ]
Song X. [1 ]
Zhang X. [2 ]
Li H. [3 ]
机构：
[1] Key Laboratory of Regional Environment and Eco-restoration, Ministry of Education, Shenyang University, Shenyang, 110044, Liaoning
[2] Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, Jilin
[3] Geological and Environmental Monitoring Station of Liaoning Province, Shenyang, 110032, Liaoning
来源：
Huagong Xuebao/CIESC Journal | 2018年 / 69卷 / 07期
关键词：
Diffusion model; Kinetics; Pollution; Regeneration; SAT;
D O I：
10.11949/j.issn.0438-1157.20171620
中图分类号：
学科分类号：
摘要：
The more and more nitro aromatic compounds have been detected in the environment, and one of the most popular compounds was p-nitrophenol. To improve the removal effect of p-nitrophenol using soil aquifer system (SAT), the system was innovated with iron-oxide coated sand as the aquifer media. Characterization of the iron coated SAT shows that surface of the oxidized iron film was flocculent or lamellar without fixed shape. Iron-oxide coated sand has pore structure and makes the specific surface increased 2 times to 4 times. Study of absorption kinetics indicated that the absorption kinetics were governed by the Freundlich model of chemical adsorption, and the absorption capacity was much enhanced. The diffusion model study demonstrated the pore diffusion was higher than sufficient diffusion. The results of the mini-column break through show that the adsorption is closely related to the residence time of the solute in the medium, so the flow rate should be appropriately controlled during the SAT operation. © All Right Reserved.
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页码：3059 / 3067
页数：8
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