The aim of this work was to design a low cost adsorbent for efficient and selective removal of glyphosate from water at neutral pH conditions. For this purpose, zeolite 4A, a locally abundant and cheap mineral material, was ion-exchanged with Cu²⁺ to produce Cu-zeolite 4A. The FTIR results revealed that the modification has no important effect on chemical structure of zeolite 4A. After modification, highly crystalline zeolite 4A was converted to amorphous Cu-zeolite 4A according to XRD studies. The SEM images showed spherical-like particles with porous surfaces for Cu-zeolite 4A compared to cubic particles with smooth surfaces for zeolite 4A. Adsorption equilibrium data were well fitted with non-linear forms of Langmuir, Freundlich and Temkin isotherms. The maximum adsorption capacity for Cu-zeolite 4A was calculated to be 112.7 mg g^–1 based on the Langmuir model. The adsorption of glyphosate by the modified adsorbent had fast kinetics fitted both pseudo-first-order and pseudo-second-order models. A mechanism based on chemical adsorption was proposed for the removal process. The modified adsorbent had a good selectivity to glyphosate over natural waters common cations and anions. It also showed desired regeneration ability as an important feature for practical uses. The potential use of the developed material as antibacterial agent for water disinfection filters was also investigated by MIC method. Relatively strong antibacterial activity was observed for Cu-zeolite 4A against Gram-positive and Gram-negative model bacteria while zeolite 4A had no antibacterial properties. No release of Cu²⁺ to aqueous solutions was detected as unique feature of the developed material.

这项工作的目的是设计一种低成本的吸附剂，以在中性pH条件下从水中有效和选择性地去除草甘膦。为此，将局部丰富且廉价的矿物材料4A沸石与Cu ²⁺进行了离子交换。生产铜沸石4A。FTIR结果表明该改性对4A沸石的化学结构没有重要影响。改性后，根据XRD研究，将高度结晶的沸石4A转化为无定形的Cu-沸石4A。SEM图像显示，与用于沸石4A的具有光滑表面的立方颗粒相比，用于Cu-沸石4A的具有多孔表面的球形颗粒。吸附平衡数据与Langmuir，Freundlich和Temkin等温线的非线性形式非常吻合。经计算，Cu沸石4A的最大吸附容量为112.7 mg g ^–1基于Langmuir模型。改性吸附剂对草甘膦的吸附具有快速动力学，拟合拟一级模型和拟二级模型。提出了一种基于化学吸附的去除机理。改性的吸附剂对草甘膦对天然水常见的阳离子和阴离子具有良好的选择性。它还显示出所需的再生能力，这是实际应用中的重要特征。还通过MIC方法研究了开发的材料作为水消毒过滤器的抗菌剂的潜在用途。观察到Cu-沸石4A对革兰氏阳性和革兰氏阴性模型细菌具有相对强的抗菌活性，而沸石4A没有抗菌特性。不释放Cu ²⁺ 水溶液中的碳纳米管被检测为已开发材料的独特特征。