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Exploring the Degradation of Malachite Green Using Fenton and Photo-Fenton Processes Egah G. O; Obadimu C. O; Ewenifa O. J; Ndukwe B. K; Adelagun R.O. A
African Journal of Sciences and Traditional Medicine Vol 1 No 1 (2024): African Journal of Sciences and Traditional Medicine
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/ajstm.v1i1.3501

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.
Removal, Recovery and Reuse of Resource in Waste Streams: Challenges, Management and Solutions Obadimu C. O; Adelagun R.O. A
Kwaghe International Journal of Sciences and Technology Vol 1 No 1 (2024): Kwaghe International Journal of Sciences and Technology
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/kijst.v1i1.3610

Abstract

The concept of resource recovery has received immense attention in the last decade from researchers globally due to the stringent discharge limit of nutrients, the provision of an alternative for the highly expensive inorganic fertilizers and as well as reduction of environmental pollution. Resource recovery has given wastewater a new look as a resource from which values can be derived. However, it is faced with an array of issues, ranging from technological feasibilities of recoveries, social-cultural acceptance, economic and business feasibilities, legislative-political challenges, marketability of the recovered products and environmental-ecological challenges. In this study these challenges are highlighted, considered and eval_uated for possible solutions. The technological aspects are considered in the form of the source of recovery, methods and techniques as wsell as the applicability of the recovered products. A decisive aspect is enlightenment via education to change people’s perspectives and attitudes towards the application of recovered products. Other challenges are also stated and reviewed and solutions are proffer to militate these challenges if properly considered. Finally, as there is not one single, encompassing solution for these challenges as some are localized and geographical, solutions therefore, must be tailor-made to fit and adapt to the challenge at hand.