Isotherm and Thermodynamic Analysis of Azur C Dye Adsorption on GO/P(CMC-Co-Am) Nanocomposite
نویسندگان
1 College of Veterinary, University of Kerbala, Kerbala, Iraq
2 Department of Chemistry, College of Education, University of Al-Qadisiyah, Diwaniyah, Iraq
3 Department of Chemistry, College of Education, University of Al-Qadisiyah, Diwaniyah, Iraq
4 Branch of Physiology, Biochemistry and Pharmacology, College of Veterinary, University of Kerbala, Kerbala, Iraq
5 Ministry of Education General Directorate of Al-Qadisiyah Education, Diwaniyah, Iraq
6 Department of Chemistry, College of Education, University of Al-Qadisiyah, Diwaniyah, Iraq
7 Department of Chemistry, University of Sahiwal, Sahiwal, Pakistan
doi
10.22052/JNS.2024.03.015چکیده
Water pollution is one of the critical challenges of today’s society. Dyes are carcinogenic pollutants that are resistant to degradation and their adsorptive removal from water require some adsorbents with higher adsorption efficiency. Current research focuses on the adsorptive removal of Azure C dye onto a graphene oxide-carboxymethyl cellulose-co-acrylamide (GO/P(CMC-Co-Am)) nanocomposite synthesized via free radical copolymerization process. Batch adsorption study was carried out for bitter understanding the effects of dye concentration and temperature on adsorption efficiency. Data from concentration study and temperature was applied to different isotherm models and thermodynamic study. Results revealed that Freundlich isotherm model fits best to adsorption data (R² = 0.9219), highlighting the heterogeneous adsorption. Furthermore, high temperature results in decreasing the adsorption capacity, revealing the exothermic nature of the adsorption process. Thermodynamically, the process was spontaneous and exothermic in nature with a decrease in entropy over a range of temperature. Overall, results showed the effectiveness of GO/P(CMC-Co-Am) nanocomposite for adsorption of Azure C dye from water.
