Effective Removal of Crystal Violet Dye from Aqueous Solutions Using Periwinkle-Clay Rooftile Composite Catalyst: Experimental Investigation and Kinetic Modelling
نویسندگان
1 Department of Project Management Technology, The Federal University of Technology, Akure, Nigeria
2 Department of Environmental science, Southern Illinois University Edwardsville, USA
3 Department of Water Resources & Environmental Engineering, Nigerian Defence Academy, NDA, Kaduna, Nigeria
4 Department of Chemical Engineering, Ladoke Akintola University of Technology, Nigeria
5 Department of Industrial Chemistry, University of Benin, Nigeria
6 Department of Science Lab. Tech. (Biological Science and Biotechnology), Ekiti State University, Nigeria
7 Department of Chemical Engineering, Federal University of Technology, Owerri, Nigeria
8 Department of Biochemistry, Faculty of Biological Sciences, University of Nsukka, Nigeria
9 Department of Civil Engineering, University of New Haven, USA
10 Department of Biochemistry, North Carolina A&T University, USA
11 Department of Chemical Engineering, University of Benin, Nigeria
12 Department of Biochemistry, Ajayi Crowther University, Nigeria
13 Department of Chemical Engineering, Ladoke Akintola University of Technology, Nigeria
14 Department of Environmental Chemistry, University of Wolverhampton, UK
15 Department of Biochemistry, National Development Agency, Abuja, Nigeria
16 Department of Chemistry, Federal University of Agriculture, Abeokuta, Ogun State, Nigeria
doi
10.48309/pcbr.2024.463139.1358چکیده
This study investigates the adsorption of crystal violet (CV) dye from aqueous solutions using original and modified periwinkle-clay rooftile composites. The objective is to explore the efficacy of periwinkle-clay rooftile composite as a catalyst for treating simulated textile wastewater containing crystal violet dye. Percentage dye removal of crystal violet from the simulated textile wastewater was examined using both modified and unmodified catalysts. Results indicate that CV removal increased with contact time, adsorbent dose, temperature, and ionic strength, while decreasing with initial dye concentration above 80 mg/l. The pH range of 6-11 was found to be optimal for CV dye removal. Adsorption equilibrium for CV dye by periwinkle-clay rooftile (both modified and unmodified) was achieved within 105 minutes, with a removal efficacy of up to 98% for both types of catalyst. The pseudo-second-order kinetic model provided the best fit for describing sorption kinetics for both modified and unmodified catalysts. In addition, the Freundlich isotherm model was suitable for describing adsorption isotherms for the modified catalyst, while Temkin isotherm model was appropriate for the unmodified catalyst. This study offers valuable insights into the potential application of periwinkle-clay rooftile composites for wastewater treatment in the textile industry.
