Exploring the Degradation of Malachite Green Using Fenton and Photo-Fenton Processes
Digital Object Identifier:
10.58578/ajstm.v1i1.3501
Viewed : 9 times
Downloaded : 11 times
Please do not hesitate to contact us if you would like to obtain more information about the submission process or if you have further questions.
Abstract
The degradation of Malachite green (MG) dye was studied using Fenton and Photo-Fenton processes. Batch experiment was conducted for the effect of pH at the range of (3–12), initial concentration at 50–250mg/L, effect of catalyst dosage of 0.2-1.0g, contact time (10–60min) and temperature (303–318) were eval_uated. For each experiment, the reactor was loaded with 30mL of 50mg/L of MG aqueous solution and 20ml of 50mmol of hydrogen peroxide to which 0.5g of the ferrous catalyst was added. As investigated, the degradation capacity of Fenton and Photo Fenton was favoured by an increase in dosage, concentration, and contact time. While degradation decreases with increase in temperature and pH. The optimum pH for the degradation of MG was found to be 3. The experimental data of MG fitted better into Freundlich equation indicating multilayer degradation. Also the Kinetic data fitted more into pseudo second order than in pseudo first order equation for both Fenton and photo Fenton suggesting chemisorptions as the rate limiting step. The negative value of enthalpy change (∆H), entropy change (∆S) and Gibbs free energy (∆G) indicating that the degradation of Malachite Green was exothermic and spontaneous, meaning that physisorption dominate chemisorptions. Overall, Fenton and Photo Fenton as investigated in the present study; it is an evident that Photo-Fenton has higher potency for degradation of Malachite green than that of Fenton.
Downloads
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
References
Bello, M. M., Abdul Raman, A. A., & Asghar, A. (2019). A review on approaches for addressing the limitations of Fenton oxidation for recalcitrant wastewater treatment. Process Saf. Environmental Protection. 126, 119–140 https://doi.org/10.1016/J.PSEP.2019.03.028 Article Google Scholar
Carbajo, J., Silveira, J. E., Pliego, G., Zazo, J. A., & Casas, J. A. (2021). Increasing Photo-Fenton process Efficiency: The effect of high temperatures. Separation and Purification Technology, 271, 118876.
Chen, Y. L., Cheng, Y. Q., Guan, X. H., Liu, Y., Nie, J. X., & Li, C. V. (2019). A Rapid Fenton treatment of bio-treated dyeing and finishing wastewater at second-scale intervals: kinetics by stopped-fow technique and application in a full-scale plant. Scientific Reports, 9: 9689
Goi, A., & Trapido, M. (2002). Hydrogen peroxide photolysis, Fenton reagent and photo-Fenton for the degradation of nitrophenols: A comparative study. Chemosphere, 46(6), 913-922.
Ji, F., Li, C. L., Zhang, J. H., & Deng, L. (2011), Efficient decolorization of dye pollutants with LiFe(WO4)2 as a reusable heterogeneous fenton-like catalyst. Desalination, 269:284–290. [Google Scholar]
Krystynik, P. (2021). Advanced oxidation processes (aops)—utilization of hydroxyl radical and singlet oxygen. Reactive Oxygen Species.
Liu, Y., Wang, Q., & Pan, J. (2016). Novel process of simultaneous removal of nitric oxide and sulfur dioxide using a vacuum ultraviolet (VUV)-activated O2/H2O/H2O2 system in a wet VUV–spraying reactor. Environmental Science & Technology, 50(23), 12966-12975.
Mittal, H., Babu, R., & Alhassan, S. M. (2020). Utilization of gum xanthan based superporous hydrogels for the effective removal of methyl violet from aqueous solution. Int. Journal Biological Macromolecule. 143, 413–423 https://doi.org/10.1016/j.ijbiomac.2019.11.008 Article Google Scholar
Patel, S. K., Patel, S. G., & Patel, G. V. (2020). Degradation of reactive dye in aqueous solution by Fenton, photo-Fenton process and combination process with activated charcoal and TiO 2. Proceedings of the National Academy of Sciences, India Section A: Physical Sciences, 90, 579-591.
Ren, H., Jin, X., Li, C., Li, T., Liu, Y. & Zhou, R. (2020). Rosmarinic acid enhanced Fe(III)-mediated Fenton oxidation removal of organic pollutants at near neutral pH. Science Total Environment. 736, 139528 https://doi.org/10.1016/J.SCITOTENV.2020.139528 Article Google Scholar
Sebeia, N., Jabli, M., Ghith, A., Elghoul, Y. M., & Alminderej, F. (2019). Production of cellulose from Aegagropila Linnaei macroalgae: chemical modification, characterization and application for the bio-sorptionof cationic and anionic dyes from water. International journal Biology Macromolecule 135, 152–162 https://doi.org/10.1016/J. IJBIOMAC.2019.05.128
Thaligari, S. K., Srivastava, V. C. & Prasad, B. (2016). Adsorptive Desulfurization by Zinc-Impregnated Activated Carbon: Characterization, Kinetics, Isotherms, and Thermodynamic Modeling. Clean Technologies and Environmental Policy, 18, 1021-1030. https://doi.org/10.1007/s10098-015-1090-y
Wang, N., Hu, Q., Du, X., Xu, H., & Hao, L. (2019). Study on decolorization of Rhodamine B by raw coal fly ash catalyzed Fenton-like process under microwave irradiation. Advance Powder Technology ;30(10):2369–2378. [Google Scholar]
