An Efficient Strategy for Enhancing the Adsorption of Antibiotics and Drugs from Aqueous Solutions Using an Effective Limestone-Activated Carbon–Alginate Nanocomposite |
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Authors: | Ahmed H. Ragab Hala S. Hussein Inas A. Ahmed Khamael M. Abualnaja Najla AlMasoud |
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Affiliation: | 1.Department of Chemistry, Faculty of Science, King Khalid University, Abha 62224, Saudi Arabia;2.Chemical Engineering & Pilot Plant Department, Engineering Division, National Research Center, Cairo 11865, Egypt;3.Department of Chemistry, College of Science, Taif University, Taif 21944, Saudi Arabia;4.Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia; |
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Abstract: | Based on the adsorption performance of a porous nanocomposite with limestone (LS), activated carbon (AC) and sodium alginate (SG), a unique, multifunctional LS–AC–SG nanocomposite absorbent was designed and prepared for extracting antibiotics and drugs from aqueous solutions. The composite exhibited the following advantages: quick and simple to prepare, multifunctionality and high efficiency. Amoxicillin (AMX) and diclofenac (DCF) were chosen as the conventional antibiotic and the drug, respectively. The prepared nanocomposite’s physicochemical characteristics were calculated through numerous characterization methods. The structure of the surface was made up of interconnected pores that can easily confine pollutants. The surface area was measured to be 27.85 m2/g through BET analysis. The results show that the maximum absorption capacity of amoxicillin and diclofenac was 99.6% and 98.4%, respectively, at a contact time of 40 min. The maximum removal of amoxicillin and diclofenac was reached at pH = 2. Adsorption analysis revealed that adsorption isotherm and kinetic data matched the pseudo-first-order kinetic and the Langmuir isotherm models. The results imply that the synthesized nanocomposites have the capacity to remove amoxicillin (AMX) and diclofenac (DCF) from aqueous solutions. |
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Keywords: | amoxicillin (AMX) diclofenac (DCF) limestone activated carbon alginate adsorption |
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