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煅烧贝壳粉对水中拟除虫菊酯的吸附：制备、表征及机理分析

Adsorption of Pyrethroids in Water by Calcined Shell Powder: Preparation, Characterization, and Mechanistic Analysis.

作者信息

Ma Xiaohan, Tao Siyuan, Fu Shiqian, Yang Huicheng, Lin Bangchu, Lou Yongjiang, Li Yongyong

机构信息

Key Laboratory of Food Deep Processing Technology of Animal Protein of Zhejiang Province, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315800, China.

Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315800, China.

出版信息

Materials (Basel). 2023 Mar 31;16(7):2802. doi: 10.3390/ma16072802.

DOI:10.3390/ma16072802
PMID:37049096
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10096194/
Abstract

Pyrethroids are common contaminants in water bodies. In this study, an efficient mussel shell-based adsorbent was prepared, the effects of factors (calcination temperature, calcination time, and sieved particle size) on the pyrethroid adsorption capacity from calcined shell powder were investigated via Box-Behnken design, and the prediction results of the model were verified. By characterizing (scanning electron microscopy, X-ray diffraction, Fourier infrared spectroscopy, and Brunauer-Emmett-Teller measurements) the adsorbent before and after the optimized preparation process, the results showed that calcined shell powder had a loose and porous structure, and the main component of the shell powder under optimized condition was calcium oxide. The adsorption mechanism was also investigated, and the analysis of adsorption data showed that the Langmuir, pseudo second-order, and intra-particle diffusion models were more suitable for describing the adsorption process. The adsorbent had good adsorption potential for pyrethroids, the adsorption capacity of the two pesticides was 1.05 and 1.79 mg/g, and the removal efficiency was over 40 and 70% at the maximum initial concentration, respectively.

摘要

拟除虫菊酯是水体中常见的污染物。在本研究中，制备了一种高效的基于贻贝壳的吸附剂，通过Box-Behnken设计研究了煅烧温度、煅烧时间和筛分粒径等因素对煅烧贝壳粉拟除虫菊酯吸附能力的影响，并对模型的预测结果进行了验证。通过对优化制备过程前后的吸附剂进行表征（扫描电子显微镜、X射线衍射、傅里叶红外光谱和Brunauer-Emmett-Teller测量），结果表明煅烧贝壳粉具有疏松多孔的结构，优化条件下贝壳粉的主要成分是氧化钙。还研究了吸附机理，吸附数据分析表明Langmuir、准二级和颗粒内扩散模型更适合描述吸附过程。该吸附剂对拟除虫菊酯具有良好的吸附潜力，两种农药的吸附容量分别为1.05和1.79 mg/g，在最大初始浓度下去除率分别超过40%和70%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/07c7/10096194/8a9627a5b053/materials-16-02802-g010.jpg
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