Amino-functionalised silica-grafted molecularly imprinted polymers for chloramphenicol adsorption
المؤلف | Idris, Z. Mohamed |
المؤلف | Hameed, B.H. |
المؤلف | Ye, L. |
المؤلف | Hajizadeh, S. |
المؤلف | Mattiasson, B. |
المؤلف | Mohd Din, A.T. |
تاريخ الإتاحة | 2022-03-23T06:05:26Z |
تاريخ النشر | 2020 |
اسم المنشور | Journal of Environmental Chemical Engineering |
المصدر | Scopus |
المعرّف | http://dx.doi.org/10.1016/j.jece.2020.103981 |
الملخص | This research investigated the liquid-phase removal of chloramphenicol (CAP), an emerging contaminant using molecularly imprinted polymers (MIPs). CAP adsorption profiles, equilibrium, and kinetics were analysed. The adsorption performance was compared between MIPs and non-imprinted polymers (NIPs), both with silica or without silica grafting. The imprinting factor (IF) values for the Si@MIPs-CAP were significantly higher than the IF values for MIPs-CAP adsorbent at pH 8. The kinetics of CAP adsorption was fitted to pseudo-second-order kinetics models for MIPs-CAP (R2 = 0.9998) and Si@MIPs-CAP (R2 = 0.9999). The adsorption isotherm of Si@MIPs-CAP was well represented by the Langmuir model (R2 = 0.9991), while the Freundlich isotherm model (R2 = 0.9998) provided the best fit for MIPs-CAP. The maximum monolayer adsorption capacities, Qmax, for Si@MIPs-CAP (32.26 mg g-1) were higher than the Qmax for Si@NIPs-CAP (29.6 mg g-1). These results suggested that the silica-grafted molecularly imprinted polymers can be employed as a potential water-compatible adsorbent for the selective adsorption and removal of CAP from aqueous phase. |
راعي المشروع | This work was partly supported by the World Bank Robert S. McNamara Fellowship Program and the Ministry of Higher Education Malaysia through the Fundamental Research Grant Scheme ( 6071330 ). The authors are grateful to the Division of Pure and Applied Biochemistry, Lund University, Sweden and to School of Chemical Engineering, Universiti Sains Malaysia for supporting and providing laboratory facilities. |
اللغة | en |
الناشر | Elsevier Ltd |
الموضوع | Adsorption Chloramphenicol Emerging contaminant Molecularly imprinted polymer Precipitation polymerisation |
النوع | Article |
رقم العدد | 5 |
رقم المجلد | 8 |
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