International Research Journal of Engineering and Technology (IRJET)
e-ISSN:2395-0056
Volume:9 Issue:9| September 2022
p-ISSN: 2395-0072
www.irjet.net
Treatment of Dairy Wastewater by Using Electro-Fenton Process by Adopting Aluminum and Iron Electrodes Abhilash1, Dr. K M Sham Sundar2 1PG
Student, Dept of Environmental Enineering UBDCE, Davanagere, Karnataka, India Dept of Environmental Enineering UBDCE, Davanagere, Karnataka, India ---------------------------------------------------------------------***--------------------------------------------------------------------1.1 Electro-Fenton Process Abstract - In this research, the treatment of dairy 2Professor,
wastewater by Electro Fenton process adopting aluminum and iron electrodes for the removal of parameters such as Chemical Oxygen Demand (COD) and Total Suspended Solids (TSS) is studied. The experimental design and optimization of independent variables such as Fenton Dosage, Electric Potential, Electrolysis Time and Distance between Electrodes are evaluated by means Box- Behnken Design(BBD) In Response Surface Methodology(RSM). The second order quadratic model was employed for the prediction of removal percentage of COD and TSS in several operations and conditions. The true impact of each independent variables and relationship of dependent and independent variables was analyzed by using analysis of variance(ANOVA). The treatment efficiency of Electro Fenton process for the removal of COD and TSS was studied by varying the independent variables such as Fenton Dosage (0.5-3.5) ml/L electrolysis time (10-60 Minutes), electric potential (3-12V) and distance between electrodes (2-6 cm), the optimal conditions of independent variables for maximum removal efficiency of responses are Fenton Dosage 3.5 ml/L, Electric Potential of 12 V, Electrolysis Time of 35 minutes and distance between electrodes of 4cm. the removals of COD and TSS at optimized conditions are found to be 84.26% and 90.47% respectively.
This process involves the removal solid particles from the specified waste using a Fenton reagent and electricity applied to the electrodes. This method is segregation of electrical and chemical operations which is widely used to eliminate the particles in the effluent. In the Fenton reaction hydroxyl radicals are given raise from the depletion of hydrogen peroxide. Although this unconstrained reaction was only introduced 40 years after the submission of Fenton. Fenton process is mainly depended on Fenton reagent which is comprised of hydrogen peroxide (H2O2) as oxidation agent and ferrous sulphate (FeSO4) as reduction agent. Fenton reagent is popularly known for its potential in the destruction of harmful pollution in wastewater and it is also help out in coagulation process. Hydrogen peroxide which has chemical symbol as H2O2 is a strong oxidant and its usage in operations of different pollutants are recommended. H2O2 is a strong oxidant but still it alone is not capable to eliminate the pollutants in the waste water due to its leisurely rate of reaction, so it required a reducing agent such as ferrous sulphate which makes the process efficient and better. This technique is ideal at contexture temperature and pressure. This system comprised of ferrous salts added with hydrogen peroxide under acidic conditions. Ferrous ion reacts with hydrogen peroxide, creates hydroxyl; radicals OH written below in equation (1)
Key Words:
Electro-Fenton, RSM, COD, TSS, Iron electrode, aluminum electrode, BBD.
1. INTRODUCTION In India, prompt growth of industrialization and urbanization with concurrently inhabitants lift has in tensed an irreversible destruction to the nature and caused reduction of fresh water pools, it created threat to the upcoming generation. Hence, supportability is dominant component to square up to the barrier of fresh water puddle and meet the accelerating clean water demand. Howbeit, wastewater mechanizations are reliable, yet there is required for efficient and low budget treatment process that can considerable huge and high established systems for advancing countries like India. Diurnal large amount of water is squandered as industrial dispense. The untreated and partly treated dispenses to waterbody fouling the fresh water bodies. All types of industrial dispense required a better treatment to reduce the water pollution and defend environment.
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………………….(1)
The OH free radical, having a very large amount of oxidation, and it is potential of reducing with many organic particles by a chain of reactions. + + +
+ +R
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…………………..(2) +
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+ R …………………………………..(4)
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