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Desorption of chloramphenicol from ordered mesoporous carbon-alginate beads: Effects of operating parameters, and isotherm, kinetics, and regeneration studies by N.A. Ahammad; M.A. Zulkifli; M.A. Ahmad; B.H. Hameed; A.T. Mohd Din is a Environmental Science article available to read on EtoBox.

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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 dow

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Author

N.A. Ahammad; M.A. Zulkifli; M.A. Ahmad; B.H. Hameed; A.T. Mohd Din

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Environmental Science (Physical Sciences)