Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, Iran.
Chemical Engineering Department, University of Waterloo, Waterloo, Ontario, Canada.
PLoS One. 2024 Jul 10;19(7):e0304684. doi: 10.1371/journal.pone.0304684. eCollection 2024.
To effectively remove Diazinon (DZ), Amoxicillin (AMX), and Crystal Violet (CV) from aquatic environments, a novel granular activated carbon (GAC) modified with Polyethylene glycol 600 (PEG) was created and manufactured. The chemical properties were investigated using a variety of characteristic analyses, including FT-IR, XRD, FESEM, and N2 adsorption/desorption. The effectiveness of GAC-PEG's adsorption for the removal of DZ, AMX, and CV was assessed under a variety of conditions, including a pH of 4-9 for the solution, 0.003-0.05 g doses of adsorbent, 50-400 ppm starting concentration, and a reaction time of 5-25 min. For DZ, AMX, and CV adsorption, the maximum adsorption capacity (Qmax) was 1163.933, 1163.100, and 1150.300 mg g-1, respectively. The Langmuir isotherm described all of the data from these adsorption experiments, and the pseudo-second-order well explains all-adsorption kinetics. Most contacts between molecules, electrostatic interactions, π-π interactions, hydrogen bonding, and entrapment in the modified CAG network were used to carry out the DZ, AMX, and CV adsorption on the GAC-PEG. The retrievability of the prepared adsorbent was successfully investigated in studies up to two cycles without loss of adsorption efficiency, and it was shown that it can be efficiently separated.
为了有效地从水生环境中去除敌敌畏（DZ）、阿莫西林（AMX）和结晶紫（CV），制备并开发了一种新型的聚乙二醇 600（PEG）修饰的颗粒活性炭（GAC）。通过多种特征分析，包括傅里叶变换红外光谱（FT-IR）、X 射线衍射（XRD）、场发射扫描电子显微镜（FESEM）和氮气吸附/解吸，研究了 GAC-PEG 的化学性质。在不同的条件下评估了 GAC-PEG 对 DZ、AMX 和 CV 的吸附去除效果，包括溶液的 pH 值为 4-9、吸附剂剂量为 0.003-0.05 g、起始浓度为 50-400 ppm 和反应时间为 5-25 min。对于 DZ、AMX 和 CV 的吸附，最大吸附容量（Qmax）分别为 1163.933、1163.100 和 1150.300 mg g-1。这些吸附实验的数据均符合 Langmuir 等温线，准二级动力学很好地解释了所有的吸附动力学。在 GAC-PEG 上进行 DZ、AMX 和 CV 的吸附，主要利用了分子之间的大多数接触、静电相互作用、π-π 相互作用、氢键和在改性 CAG 网络中的捕获。在多达两个循环的研究中，成功地考察了制备的吸附剂的可回收性，而没有损失吸附效率，表明它可以有效地分离。
