Removal of endocrine disruptors PAEs in drinking water by gamma-ray irradiation

ZHAO Yongfu1; 3 ZHENG Zheng1; 2 ZHENG Binguo1 WANG Changbao3 LI Lili3 1

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Removal of endocrine disruptors PAEs in drinking water by gamma-ray irradiation

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- Removal of endocrine disruptors PAEs in drinking water by gamma-ray irradiation
- NUCLEAR TECHNIQUES Vol. 35, Issue 9, (2012)
- 作者机构：
  
  1. 南京大学环境学院污染控制与资源化研究国家重点实验室
  2. 江苏省农业科学院原子能研究所
  3. 复旦大学环境科学系
- 作者简介：
- 基金信息：
  
  农业部公益性行业科研专项项目(201103007)资助
- DOI：
  CLC： TU991.2
- Published：01 September 2012
- 稿件说明：
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[1]赵永富,郑正,郑宾国,汪昌保,李俐俐.辐射去除饮用水中的内分泌干扰物PAEs[J].核技术,2012,35(09):680-685.

ZHAO Yongfu1, 3 ZHENG Zheng1, 2 ZHENG Binguo1 WANG Changbao3 LI Lili3 1. Removal of endocrine disruptors PAEs in drinking water by gamma-ray irradiation[J]. Nuclear techniques, 2012, 35(9): 680-685.
[1]赵永富,郑正,郑宾国,汪昌保,李俐俐.辐射去除饮用水中的内分泌干扰物PAEs[J].核技术,2012,35(09):680-685. DOI：

ZHAO Yongfu1, 3 ZHENG Zheng1, 2 ZHENG Binguo1 WANG Changbao3 LI Lili3 1. Removal of endocrine disruptors PAEs in drinking water by gamma-ray irradiation[J]. Nuclear techniques, 2012, 35(9): 680-685. DOI：

摘要

邻苯二甲酸酯（PAEs）是环境内分泌干扰物之一。选取已列入我国环境优先控制污染物黑名单的邻苯二甲酸二甲酯（DMP）、邻苯二甲酸二乙酯（DEP）和邻苯二甲酸二丁酯（DBP）为对象进行γ辐射降解研究

结果表明:DMP、DEP和DBP能被γ辐照有效降解;辐照0.8 kGy

12 mg/L的DMP、DEP和DBP降解率分别为96.6%、94.5%和86.2%;辐照去除其总碳（TC）所需剂量远高于降解剂量

经2 kGy辐照其TC去除率分别仅为23.6%、14.3%、12.9%。HLCP、UV及其降解中间产物等分析都表明

DMP、DEP和DBP辐照去除分为高、低剂量两个阶段:在低剂量阶段

尽管DMP、DEP和DBP辐照后浓度降低

但实际上并未发生苯环裂解反应

要实现完全去除该类物质还需进行更高剂量辐照。最后对PAEs微污染饮用水进行模拟辐照并达到了去除目标。

Abstract

Phthalic acid esters(PAEs) belong to environmental endocrine disruptor.The dimethyl phthalate(DMP)

diethyl phthalate(DEP) and di-n-butyl phthalate(DBP) were selected for the radiation study.The removal efficiencies of DMP

DEP and DBP in drinking water by gamma-ray irradiation are discussed.The results show that these PAEs could be efficiently removed by gamma-ray irradiation.The removal efficiencies of DMP

DEP and DBP(12 mg/L) in aqueous solutions by 0.8 kGy gamma-ray treatment were 96.6%

94.5% and 86.2%.The absorbed dose needed for the removal of total carbon in aqueous solutions was much larger than the doses for PAEs degradation.When 2 kGy was selected

the removal efficiencies of TC for DMP

DEP and DBP were only 23.6%

14.3% and 12.9%.The study results also show that the radiation degradation reaction of PAEs should be divided into two stages: low dose addition reaction and high dose ring-opening reaction.This study is of significance in the disposal of micro-polluted drinking water.

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