Desorption of chloramphenicol from ordered mesoporous carbon-alginate beads: Effects of operating parameters, and isotherm, kinetics, and regeneration studies
المؤلف | Ahammad, N.A. |
المؤلف | Zulkifli, M.A. |
المؤلف | Ahmad, M.A. |
المؤلف | Hameed, B.H. |
المؤلف | Mohd, Din A.T. |
تاريخ الإتاحة | 2022-03-23T06:05:25Z |
تاريخ النشر | 2021 |
اسم المنشور | Journal of Environmental Chemical Engineering |
المصدر | Scopus |
المعرّف | http://dx.doi.org/10.1016/j.jece.2020.105015 |
الملخص | This study has investigated the desorption of an emerging contaminant, known as chloramphenicol (CPC), from ordered mesoporous carbon (OMC)-alginate beads. The effects of initial concentration, operating temperature, and a selection of eluents (water, ethanol, and sodium chloride (NaCl)) on the whole desorption process were analysed. The desorption efficiency was found to decrease with increasing temperature, an indication for a favourable desorption process at a lower temperature range. NaCl was the most effective eluent for the CPC desorption process, followed by ethanol and water. The use of 1 M NaCl has resulted in the highest desorption efficiency of 84.7%. Redlich-Peterson and Freundlich isotherm models fitted well to the CPC desorption experimental data. The desorption kinetic data for ethanol and NaCl as eluents fitted well to the pseudo-second order kinetic model. Meanwhile, distilled water as an eluent was best fitted to the pseudo-first order kinetic model. The CPC adsorption efficiency began to notably decrease from 78.9% to 48.5% after five consecutive adsorption/desorption cycles. Similarly, the desorption efficiency began to decrease from 76.0% in the first cycle down to 35.2% in the fifth cycle. These findings demonstrated that the OMC-alginate beads are a very promising adsorbent with excellent desorption and reusability characteristics towards the targeted antibiotic, CPC. |
راعي المشروع | This work was supported by the Research University Incentives (RUI) Grant ( 1001/PJKIMIA/8014064 ) and USM Fellowship Program provided by Universiti Sains Malaysia. |
اللغة | en |
الناشر | Elsevier Ltd |
الموضوع | Adsorption Chloramphenicol Desorption Emerging contaminant Ordered mesoporous carbon |
النوع | Article |
رقم العدد | 1 |
رقم المجلد | 9 |
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