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用于马拉硫磷吸附的再生聚合物的可行性研究：等温线和动力学建模

Feasibility Study on the Use of Recycled Polymers for Malathion Adsorption: Isotherms and Kinetic Modeling.

作者信息

Hermosillo-Nevárez Jhonatan J, Bustos-Terrones Victoria, Bustos-Terrones Yaneth A, Uriarte-Aceves Perla Marysol, Rangel-Peraza Jesus Gabriel

机构信息

Tecnológico Nacional de México - Instituto Tecnológico de Culiacán, Juan de Dios Bátiz 310, Col. Guadalupe, Culiacán 80220, Mexico.

Departamento de Ingeniería en Tecnología Ambiental, Universidad Politécnica del Estado de Morelos, Boulevard Cuauhnáhuac 566, Col. Lomas del Texcal, Jiutepec 62550, Mexico.

出版信息

Materials (Basel). 2020 Apr 12;13(8):1824. doi: 10.3390/ma13081824.

DOI:10.3390/ma13081824
PMID:32290629
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7215715/
Abstract

In this study, the use of Polyvinylchloride (PVC) and High Density Polystyrene (HDPS) was demonstrated as an alternative for the adsorption of Malathion. Adsorption kinetics and isotherms were used to compare three different adsorbent materials: PVC, HDPS, and activated carbon. The adsorption capacity of PVC was three times higher than activated carbon, and a theoretical value of 96.15 mg of Malathion could be adsorbed when using only 1 g of PVC. A pseudo first-order rate constant of 1.98 (1/h) was achieved according to Lagergren kinetic model. The adsorption rate and capacity values obtained in the present study are very promising since with very little adsorbent material it is possible to obtain high removal efficiencies. Phosphorous and sulfur elements were identified through Energy Dispersive X-ray (EDX) analysis and evidenced the malathion adsorption on PVC. The characteristic spectrum of malathion was identified by the Fourier Transform Infrared (FTIR) Spectroscopy analysis. The Thermogravimetric and Differential Thermal Analysis (TG/DTA) suggested that the adsorption of malathion on the surface of the polymers was mainly determined by hydrogen bonds.

摘要

在本研究中，证明了使用聚氯乙烯（PVC）和高密度聚苯乙烯（HDPS）作为吸附马拉硫磷的替代材料。采用吸附动力学和等温线来比较三种不同的吸附剂材料：PVC、HDPS和活性炭。PVC的吸附容量比活性炭高三倍，仅使用1克PVC时，理论上可吸附96.15毫克马拉硫磷。根据 Lagergren动力学模型，伪一级速率常数为1.98（1/小时）。本研究中获得的吸附速率和容量值非常有前景，因为只需很少的吸附剂材料就能实现高去除效率。通过能量色散X射线（EDX）分析鉴定了磷和硫元素，并证明了马拉硫磷在PVC上的吸附。通过傅里叶变换红外（FTIR）光谱分析确定了马拉硫磷的特征光谱。热重分析和差热分析（TG/DTA）表明，马拉硫磷在聚合物表面的吸附主要由氢键决定。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc67/7215715/f1d18d5e88c5/materials-13-01824-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc67/7215715/bc26f71220ba/materials-13-01824-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc67/7215715/bccbaeb07256/materials-13-01824-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc67/7215715/e94d8f2b0962/materials-13-01824-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc67/7215715/27e732b1e0ce/materials-13-01824-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc67/7215715/f1d18d5e88c5/materials-13-01824-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc67/7215715/bc26f71220ba/materials-13-01824-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc67/7215715/bccbaeb07256/materials-13-01824-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc67/7215715/e94d8f2b0962/materials-13-01824-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc67/7215715/27e732b1e0ce/materials-13-01824-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dc67/7215715/f1d18d5e88c5/materials-13-01824-g005.jpg

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