Volume 1, Issue 1 ( 1(1) 2023)
JGP 2023, 1(1): 14-26 |
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Moshkriz A. (2023). Investigation of the kinetics and thermodynamics of the adsorption of ampicillin on Chitosan/Coconut Shell ASH composite (CCSAC). JGP. 1(1), 14-26.
URL: http://jgp.yu.ac.ir/article-1-25-en.html
URL: http://jgp.yu.ac.ir/article-1-25-en.html
Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak, 3848177584, Iran , alimoshkriz1994@gmail.com
Abstract: (1674 Views)
Chitosan/Coconut Shell ASH composite (CCSAC) has the potential to be a viable alternative adsorbent for removing Ampicillin (AMP) from aqueous solutions. In this study, CCSAC will be evaluated as a potential new adsorbent, and its adsorption mechanism for AMP will be investigated. The effects of AMP concentration, adsorption time, solution pH, and temperature on CCSAC adsorption are also investigated. The removal efficacy of AMP by CCSAC depends on the initial concentration of AMP in the solution. During the initial phase of the AMP adsorption process, the concentration of AMP decreases drastically within the first 150 minutes, then gradually decreases until equilibrium is reached after 600 minutes. In general, the adsorption capacity of CCSAC is dependent on the solution's pH, temperature, and ion concentration, particularly when the pH value is high. It was found that the absorption capacity doubled at a temperature of 45 °C. Furthermore, it has been demonstrated that low-acid and high-alkaline solutions can accelerate the adsorption of AMP onto CCSAC. As the highest adsorption capacity recorded in this study is 16.8 mg/g, it is significantly higher than other adsorbates reported in the literature, indicating the feasibility of CCSAC as a new type of adsorbent. The Langmuir isotherm model provides the most plausible explanation for how adsorption takes place. Pseudo-second-order models fit nicely with the experimental data, suggesting a primarily physical and chemical control over the adsorption process is occurring. As a result, such findings can serve as a useful guide for extending the applicability of CCSAC to a broader range of areas.
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