Journal of Applied Sciences and Environmental Management (Nov 2024)
Evaluation of the Effectiveness of Various Chemical and Microbial Consortia Treatments for Biodegradation of Oily Effluents
Abstract
Treatment of oily effluents poses significant challenges due to the complex nature of pollutants and the need for effective remediation technologies. MATLAB simulations to optimize operational parameters such as reagent concentrations, pH, and temperature. The optimal parameters found for the simulation of the combined fenton’s reagent and pseudomonas treatment system were as follows; pH (6.5- 7.5), temperature (30˚C-35˚C), nutrient concentration (100-150mg/l), chemical concentration (0.5-1+-.5%(v/v)), reaction time (120 minutes), mixing speed (120 rpm) and flowrate (2L/min) compared to fenton’s reagent standard by green 2018; pH (2.5-4.5), temperature (20˚C-40˚C), nutrient concentration (50-200mg/l), chemical concentration (0.1+-.5%(v/v)), reaction time (120 minutes), mixing speed (100-300 rpm) and flowrate (2L/min) and for pseudomonas treatment standard by Hamme 2017; pH (6-8), temperature (25˚C-37˚C), nutrient concentration (100-150mg/l), chemical concentration (0.5-1+-.5%(v/v)), reaction time (120 minutes), mixing speed (100-150 rpm) and flowrate (2L/min). The integrated approach demonstrated improved pollutant removal efficiency compared to standalone methods, achieving a substantial reduction in contaminant levels. However, economic feasibility analyses indicated higher operational costs associated with the integrated system, with a negative Net Present Value (NPV) of -14646.28 and Benefit-Cost Ratio (BCR) of 0.91 compared to the individual treatment approaches of 1.04 and 0.96 respectively. This integrated treatment system offers a promising solution for enhanced oily effluent remediation, however, recommendations for optimization include adjusting reagent ratios, maintaining optimal environmental conditions, reducing by-product toxicity, and exploring cost-effective recycling methods.
