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Utilization of sugarcane bagasse ash as green adsorbent for Fuchsin basic dye removal
Jay R Patel1, Nikita J Ambegaonkar2, Ronak Patel1
1Chemical Engineering Department, L. D. College of Engineering, Navrangpura, Ahmedabad, 380015, Gujarat, India.
Scientific Reports
|October 28, 2025
Summary
Sugarcane Bagasse Ash (SCBA) effectively removes Fuchsin Basic dye, achieving 78% removal. This sustainable adsorbent is reusable, offering an eco-friendly solution for industrial wastewater treatment.
Area of Science:
- Environmental Chemistry
- Materials Science
- Waste Management
Background:
- Sugarcane bagasse is a globally abundant agricultural byproduct.
- Burning sugarcane bagasse produces Sugarcane Bagasse Ash (SCBA), a potential waste material.
- SCBA utilization can mitigate environmental issues associated with landfilling.
Purpose of the Study:
- To investigate the efficacy of SCBA as a green adsorbent for Fuchsin Basic (FB) dye removal.
- To characterize SCBA properties and optimize dye removal parameters.
- To evaluate adsorption equilibrium, kinetics, thermodynamics, and reusability of SCBA.
Main Methods:
- SCBA characterization using XRD, FTIR, SEM-EDS, and BET.
- Experimental optimization of contact time, pH, temperature, initial dye concentration, and adsorbent dosage.
- Adsorption isotherm (Langmuir, Freundlich, Temkin), kinetic (Pseudo-first-order, Pseudo-second-order), and thermodynamic studies.
- Evaluation of adsorbent reusability through multiple adsorption-desorption cycles.
Main Results:
- SCBA demonstrated significant Fuchsin Basic dye removal capabilities.
- Optimal conditions for maximum removal (78%) included 10 mg/L dye, 3 g/L adsorbent, pH 7, 60 min, and 25°C.
- Langmuir isotherm (qmax = 9.1706 mg/g) and Pseudo-second-order kinetics best described the adsorption process.
- Adsorption was endothermic, and SCBA retained 50% removal efficiency after four regeneration cycles.
Conclusions:
- SCBA is a promising, cost-effective, and environmentally friendly adsorbent for Fuchsin Basic dye removal.
- The direct application of SCBA without extensive pretreatment is feasible.
- SCBA offers a sustainable alternative for industrial wastewater treatment, reducing reliance on conventional adsorbents.
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