Selection of magnetic anion exchange resins for the removal of dissolved organic and inorganic matters

作     者：Qiongjie Wang Aimin Li Jinnan Wang Chengdong Shuang 

作者机构：State Key Laboratory of Pollution Control and Resources ReuseSchool of the EnvironmentNanjing UniversityNanjing 210046China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2012年第24卷第11期

页      面：1891-1899页

核心收录：

学科分类：083001[工学-环境科学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0822[工学-轻工技术与工程] 082202[工学-制糖工程] 

基　　金：supported by the National Natural Science Foundation of China (No.50938004) the National Science Funds for Young Scientists (No.51008152) the Jiangsu Nature Science Fund for Distinguished Scientists, China(No.BK2010006) 

主　　题：magnetic anion exchange resins dissolved organic matter inorganic anions water quality 

摘      要：Four magnetic anion exchange resins （MAERs） were used as adsorbents to purify drinking water. The effect of water quality （pH, temperature, ionic strength, etc.） on the performance of MAER for the removal of dissolved organic matter （DOM） was also investigated. Among the four studied MAERs, the strong base resin named NDMP- 1 with high water content and enhanced exchange capacity exhibited the highest removal rate of dissolved organic carbon （DOC） （48.9% removal rate） and UV-absorbing substances （82.4% removal rate） with a resin dose of 10 mL/L after 30 rain of contact time. The MAERs could also effectively remove inorganic matter such as sulfate, nitrate and fluoride. Because of the higher specific UV absorbance （SUVA） value, the DOM in the raw water was found to be removed more effectively than that in the clarified water by NDMP resin. The temperature showed a weak influence on the removal of DOC from 6 to 26℃, while a relatively strong one at 36℃. The removal of DOM by NDMP was also affected to some extent by the pH value. Moreover, increasing the sulfate concentration in the raw water could decrease the removal rates of DOC and UV-absorbing substances.