REMOVAL OF NITRATE FROM GROUND WATER BY MIEX RESINS

被引：0

作者：

Liu, Cheng ^{[1
,2
]}

Zhu, Lifei ^{[2
]}

Zhang, Gian ^{[2
]}

Wang, Jie ^{[2
]}

Deng, Yang ^{[3
]}

Chen, Wei ^{[2
]}

机构：

[1] Hohai Univ, Minist Educ, Key Lab Integrated Regulat & Resource Dev Shallow, 1 Xikang Rd, Nanjing 210098, Jiangsu, Peoples R China

[2] Hohai Univ, Coll Environm, Nanjing 210098, Jiangsu, Peoples R China

[3] Montclair State Univ, Dept Earth & Environm Studies, Montclair, NJ USA

来源：

FRESENIUS ENVIRONMENTAL BULLETIN | 2016年 / 25卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Nitrate; Drinking water; MIEX; Groundwater; ORGANIC-MATTER; PRETREATMENT; REDUCTION;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Batch experiments were used to study the adsorption characteristics of nitrate on magnetic ion exchange resins (MIEX (R)), the distribution of nitrate in groundwater was investigated in the meantime. In addition, the material was characterized, and the effects of coexisting anions and organic matter on the adsorption properties were determined. The results showed that the content of nitrate in Xuzhou city was about 20mg/L, especially higher than 25mg/L in rainy season. MIEX (R) could effectively remove nitrate from groundwater. At 288 K and 298 K, the adsorption trend was well fitted by the Langmuir isotherm. The exchange capacity of the MIEX resin was determined to be 14.62 mg-N/g, which was tested by flowing 20 mg-N/L solution. To reach the MIEX saturation adsorption, a 0.6-M NaCl solution was used to satisfy the elution. The MIEX resin dose clearly affected the nitrate adsorption, where the maximum adsorption per unit of resin volume was 10 mL-resin/L. The following major anions in order reduced the nitrate adsorption: SO42- > CO32- > Cl- > HCO3-. However, humic acid did not have a clear effect on nitrate removal. The experimental results using ground water verified that the MIEX resin can be used as a new nitrate removal technique for water treatment.

引用

页码：316 / 324

页数：9

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