[1]肖谷清.Fe3+负载的D113耐盐树脂对水中草甘膦的吸附性能[J].中国给水排水,2025,41(5):95-101.
　XIAOGu-qing.Fe3+-loaded D113 as a Salt?resistance Resin for Glyphosate Adsorption in Water[J].China Water & Wastewater,2025,41(5):95-101.
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Fe3+负载的D113耐盐树脂对水中草甘膦的吸附性能

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第5期 页码: 95-101 栏目: 出版日期: 2025-03-01
Title:
Fe3+-loaded D113 as a Salt?resistance Resin for Glyphosate Adsorption in Water
作者:
肖谷清
（湖南城市学院 材料与化学工程学院，湖南 益阳 413000）
Author(s):
XIAO　Gu-qing
（College of Materials and Chemical Engineering， Hunan City University， Yiyang 413000， China）
关键词:
树脂;  草甘膦;  Fe3+负载D113;  耐盐性;  吸附
Keywords:
resin;  glyphosate;  Fe3+-loaded D113;  salt resistance;  adsorption
摘要:
采用FeCl3将D113树脂转型为Fe3+负载的D113树脂（命名为R-Fe），研究耐盐性R-Fe对水中草甘膦的吸附性能及机理。采用电感耦合等离子体光谱（ICP）法测得R-Fe中Fe3+负载量为1.94 mmol/g，R-Fe对草甘膦的吸附量大于D113树脂和Al3+、Ni2+负载的D113树脂对草甘膦的吸附量；当草甘膦水溶液中NaCl质量分数为0~16%时，R-Fe对草甘膦的吸附量保持在102.2~105.1 mg/g，相较于330、D301和文献中报道的其他13种吸附剂具有更优异的耐盐性和稳定的草甘膦吸附能力；当草甘膦溶液pH=2.77时，草甘膦主要处于pKa2的电离平衡中，R-Fe对草甘膦的吸附量达到最大值105.1 mg/g；R-Fe对草甘膦的吸附机理为R-Fe中Fe3+通过与草甘膦中膦酸基的氧原子形成配位键来吸附草甘膦。
Abstract:
D113 resin was modified with FeCl3 to produce Fe3+-loaded D113 resin (hereafter referred to as R-Fe). This study investigated the performance and mechanism of salt resistant R-Fe for glyphosate adsorption in water. The Fe3+ content in R-Fe was quantified as 1.94 mmol/g using inductively coupled plasma spectrometry (ICP). The adsorption capacity of R-Fe for glyphosate exceeded that of D113 resin, as well as D113 resin loaded by Al3+ and Ni2+. When the mass fraction of NaCl in the glyphosate aqueous solution ranged from 0 to 16%, the adsorption capacity of R-Fe for glyphosate remained within the range of 102.2 mg/g to 105.1 mg/g. This indicateed that R-Fe had superior salt resistance and stable adsorption performance of glyphosate compared to 330, D301, and 13 other adsorbents reported in the literature. When the pH of the glyphosate solution was 2.77, glyphosate predominantly existed in the ionization equilibrium associated with pKa2. Under these conditions, the adsorption capacity of glyphosate by R-Fe reached its maximum value of 105.1 mg/g. The adsorption mechanism of R-Fe on glyphosate involved Fe3+ in R-Fe forming coordination bonds with the oxygen atoms of the phosphonic acid group in glyphosate.

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更新日期/Last Update: 2025-03-01