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新型易分离核壳结构FeO/PVP/ZIF-8纳米结构吸附剂：福辛普利制药废水除磷优化

Novel easily separable core-shell FeO/PVP/ZIF-8 nanostructure adsorbent: optimization of phosphorus removal from Fosfomycin pharmaceutical wastewater.

作者信息

Abdelmigeed Mai O, Sadek Ahmed H, Ahmed Tamer S

机构信息

Chemical Engineering Department, Faculty of Engineering, Cairo University Giza 12613 Egypt

Environmental Engineering Program, Zewail City of Science, Technology and Innovation 6th October City Giza 12578 Egypt.

出版信息

RSC Adv. 2022 Apr 27;12(20):12823-12842. doi: 10.1039/d2ra00936f. eCollection 2022 Apr 22.

DOI:10.1039/d2ra00936f
PMID:35496345
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9044422/
Abstract

A new easily separable core-shell FeO/PVP/ZIF-8 nanostructure adsorbent was synthesized and then examined for removal of Fosfomycin antibiotic from synthetic pharmaceutical wastewater. The removal process of Fosfomycin was expressed through testing the total phosphorus (TP). A response surface model (RSM) for Fosfomycin adsorption (as mg-P L) was used by carrying out the experiments using a central composite design. The adsorption model showed that Fosfomycin adsorption is directly proportional to core-shell FeO/PVP/ZIF-8 nanostructure adsorbent dosage and time, and indirectly to initial Fosfomycin concentration. The removal increased by decreasing the pH to 2. The Fosfomycin removal was done at room temperature under an orbital agitation speed of 250 rpm. The adsorption capacity of core-shell FeO/PVP/ZIF-8 nanostructure adsorbent reached around 1200 mg-P g, which is significantly higher than other MOF adsorbents reported in the literature. The maximum Langmuir adsorption capacity of the adsorbent for Fosfomycin was 126.58 mg g and Fosfomycin adsorption behavior followed the Freundlich isotherm ( = 0.9505) in the present study. The kinetics was best fitted by the pseudo-second-order model ( = 0.9764). The RSM model was used for the adsorption process in different target modes.

摘要

合成了一种新型的易于分离的核壳结构FeO/PVP/ZIF-8纳米结构吸附剂，然后对其从合成制药废水中去除磷霉素抗生素的性能进行了研究。通过检测总磷（TP）来表征磷霉素的去除过程。采用中心复合设计进行实验，建立了磷霉素吸附（以mg-P/L计）的响应面模型（RSM）。吸附模型表明，磷霉素的吸附与核壳结构FeO/PVP/ZIF-8纳米结构吸附剂的用量和时间成正比，与初始磷霉素浓度成反比。将pH值降至2时，去除率增加。磷霉素的去除在室温下以250 rpm的轨道搅拌速度进行。核壳结构FeO/PVP/ZIF-8纳米结构吸附剂的吸附容量达到约1200 mg-P/g，显著高于文献报道的其他MOF吸附剂。在本研究中，吸附剂对磷霉素的最大朗缪尔吸附容量为126.58 mg/g，磷霉素的吸附行为符合弗伦德里希等温线（n = 0.9505）。动力学数据最佳拟合拟二级模型（R² = 0.9764）。RSM模型用于不同目标模式下的吸附过程。

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