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Abstract
Industrial wastewater containing dyes poses a significant environmental threat due to their persistence and potential toxicity. Adsorption using bio-based materials offers a promising and sustainable approach for dye removal. This study investigates the effectiveness of bio-based adsorbents derived from coconut husk, banana peels, and orange peels (pretreated with formaldehyde and sulfuric acid) for methylene blue (MB) removal. The adsorbents were characterized using SEM and FTIR. Batch adsorption experiments were conducted to evaluate the MB removal efficiency under various conditions (pH, dosage, temperature, agitation, and contact time). The results showed that the Freundlich isotherm model best described the equilibrium adsorption data, indicating favorable multilayer adsorption. Kinetic studies revealed a pseudo-first-order reaction with an exceptional removal efficiency of 99.94%. Notably, the R-squared value of 0.99992 signifies an excellent fit of the model to the experimental data. These findings demonstrate the remarkable potential of bio-based materials for MB removal from wastewater. This approach offers an eco-friendly and cost-effective solution for dye remediation in the textile and dyeing industries, contributing to cleaner water resources.
Disclosure statement
No potential conflict of interest was reported by the authors.
Additional information
Notes on contributors
Satyajit M. Deshmukh
Dr. Satyajit M Deshmukh has Master degree in Chemical Technology from SGBA University, Amravati, Maharashtra India (2012) and PhD in Chemical Technology Technology from SGBA University, Amravati, Maharashtra India (2019). He is currently working as professor and Head of Chemical Engineering Department Datta Meghe College of Engineering, Airoli Navi Mumbai. He has experience in Chemical Engineering with Membrane and Separation, Environmental engineering, Energy and Petrochemical.
Sonali R. Dhokpande
Dr. Sonali R Dhokpande has Master degree in Food Technology from Rashtrasant Tukadoji Maharaj Nagpur University Maharashtra India (2004) and PhD in Chemical Technology Technology from SGBA University, Amravati, Maharashtra India (2018). She is currently working as Assistant professor of Chemical Engineering Department Datta Meghe College of Engineering, Airoli Navi Mumbai. She has experience in Chemical Engineering with Waste water treatment, Reaction Engineering, Equipment Design and Food technology.
Amaya Sankhe
Amaya A Sankhe has a Bachelor degree in Chemical Engineering from Mumbai University (2020), Maharashtra, India and is currently pursuing his Maste's degree from University of Mumbai, Maharashtra, India. Having worked as a Process Engineer in a major manufacturer of bulk drugs and specialty chemicals his area of interest's includes chemical kinetics, process simulation's, equipment design and process control optimization.
Ajinkya Khandekar
Ajinkya R. Khandekar has a Bachelor degree in Chemical Engineering from Mumbai University, Maharashtra, India (2018) and is currently pursuing Master degree from Mumbai University, Maharashtra, India. He has worked as a Production Engineer for a major speciality chemical manufacturer. His area of interests includes wastewater treatment, chemical kinetics, catalysis.