Li Rui, Zhang Yuling, Chu Wenlei, Chen Zaixing, Wang Jiali
Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University Changchun 130021 China
College of Environment and Resources, Jilin University Changchun 130021 China.
RSC Adv. 2018 Apr 11;8(24):13546-13555. doi: 10.1039/c7ra11796e. eCollection 2018 Apr 9.
The residues of sulfonamides in the environment have received widespread attention because of their potential hazards. In this study, the potential of peanut shells for antibiotic removal from aqueous solutions was investigated for four antibiotics (sulfamerazine, sulfamethazine, sulfathiazole, and sulfamethoxazole). The properties of the peanut shells were characterized using Brunauer-Emmett-Teller method, X-ray photoelectron spectroscopy, scanning electron microscopy and Fourier-transform infrared spectroscopy analyses, and the results of the analyses showed that the significant properties of peanut shells were mainly attributed to the antibiotics' adsorption process. A batch adsorption experiment was conducted to study the effect of dosage, concentration, and water factors (Fe, Mn, and Ca) on antibiotic adsorption. Adsorption kinetics and isotherms were also studied. The kinetic data showed that a pseudo-second order kinetic model fitted the experimental data, the adsorption isotherm experimental data fitted the Henry linear adsorption model well, and methanol was found to be an effective eluent for desorption of the antibiotics. The results indicate that peanut shells are a promising material for the removal of antibiotics from contaminated water, when present at low initial concentrations.
环境中磺胺类药物的残留因其潜在危害而受到广泛关注。在本研究中，研究了花生壳对四种抗生素（磺胺甲基嘧啶、磺胺二甲嘧啶、磺胺噻唑和磺胺甲恶唑）从水溶液中去除的潜力。采用布鲁诺尔-埃米特-泰勒法、X射线光电子能谱、扫描电子显微镜和傅里叶变换红外光谱分析对花生壳的性质进行了表征，分析结果表明花生壳的显著性质主要归因于抗生素的吸附过程。进行了批量吸附实验，以研究剂量、浓度和水质因素（铁、锰和钙）对抗生素吸附的影响。还研究了吸附动力学和等温线。动力学数据表明，准二级动力学模型拟合实验数据，吸附等温线实验数据很好地拟合亨利线性吸附模型，并且发现甲醇是抗生素解吸的有效洗脱剂。结果表明，当初始浓度较低时，花生壳是从污染水中去除抗生素的一种有前景的材料。
