Innovative Waste Benzene Remediation by Enhanced Photocatalytic with TiO2/Fe3O4-Based Material Supported by Bentonite in Batch and Continuous System
DOI:
https://doi.org/10.48048/tis.2024.7872Keywords:
Benzene, Composite, Photocatalytic, Adsorption, Degradation, Batch, ContinuousAbstract
Photocatalytic degradation of benzene is a viable and environmentally friendly method with significant economic advantages. In this study, a composite photocatalyst consisting of TiO2 and Fe3O4 supported by bentonite was synthesized for benzene degradation. The objective was to assess the impact of critical parameters in both batch and continuous systems. The results showed that in batch system, the effects of initial benzene concentration and pH were explored, showing optimal degradation at an initial concentration of 400 ppm and pH 5. Under these conditions, an impressive % removal value of 95.334 % was achieved. Meanwhile, continuous system analysis showed a negative correlation between feed flow rate and % removal, with the most effective degradation occurring at a flow rate of 15 mL/min. The study also delivered into the kinetics of benzene degradation in batch system, obtaining a first-order reaction based on Langmuir-Hinshelwood model with a reaction rate constant (kr) of 85.68175 mg/(L.min) and an adsorption rate constant (K) of 0.0003002 L/mg. The adsorption model was observed to follow the Langmuir model. These results contributed to the optimization of photocatalytic benzene degradation processes, offering insights into the critical factors affecting efficiency in both batch and continuous systems. The established optimum conditions and kinetic parameters provided a foundation for future advancements in the design and application of composite photocatalysts for benzene remediation.
HIGHLIGHTS
- Benzene is a known carcinogen, posing a significant health risk to humans
- Benzene can contaminate air and water sources, leading to widespread environmental pollution. Its volatile nature allows it to easily evaporate into the air and dissolve in water, contributing to long-term environmental hazards
- Photodegradation of benzene is highlighted as an environmentally friendly method, suggesting a potentially sustainable solution for benzene remediation
- A Composite photocatalyst of TiO2 and Fe3O4 supported by bentonite indicate a tailored approach for efficient benzene degradation
- Results from batch system analysis reveal impressive benzene removal rates, with optimal conditions identified at an initial concentration of 400 ppm and pH 5, providing practical insights for effective treatment
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