Study on effect of electrode materials on generation of electrolyzed water for green sanitation solutions

Jamaluddin, Syafiqah (2020) Study on effect of electrode materials on generation of electrolyzed water for green sanitation solutions. [Project Paper] (Submitted)

Text lp FK 2020 40.pdf Download (82MB)

Abstract

The aim of this project is to investigate the effect of electrode materials (Titanium-Stainless Steel 316, Stainless Steel 316-Nickel and Stainless Steel 316 Aluminium Alloy) on the generation of the electrolyzed water as a green cleaner for food industry application. Electrolyzed water is one of the latest green cleaning and sanitizing solutions that offers cost savings, offer greater convenience in finding alternatives and environmental friendly sanitation solution. Acidic electrolyzed water (AcEW) have strong bactericidal efficacy on numerous microorganisms. Meanwhile, Alkaline electrolyzed water (AIEW) has a potential as a cleaning medium alternative а for alkaline cleaning. Several electrodes pairing were used during the electrolysis study. The results suggest that Titanium- Stainless Steel 316 is the best electrodes pairing in generating the electrolyzed water. Effect of electrolyzing parameters (NaCl concentration, voltage and electrolysis time) on physical and chemical properties (pH, oxidation-reduction potential (ORP), total chlorine and free chlorine) of electrolyzed water (AcEW and AIEW) using Titanium-Stainless Steel 316 (cathode-anode) pairing were optimized by Response Surface Methodology (RSM). From RSM and Box Behnken (BBD), optimal condition for AcEW is achieved at 0.8 wt% NaCl concentration, 11.52 V and 9.19 mins electrolysis time to produce optimum responses with pH of 2.96, 1216.237mV ORP and 16.27 mg/L free chlorine. Optimal condition for AIEW is achieved at 0.75 wt% NaCl concentration, 11.80 V and 9.56 mins electrolysis time in order to obtain the optimum values of responses with pH of 12.03 and -728.454mV ORP. The corrosion rates of the Titanium-Stainless Steel 316 (cathode-anode) were determined at ranges between (0.012 to 0.024 gcm-2h-1) for stainless steel 316 (anode) and (0.00-0.003 gcm-2h-1) for titanium electrode (cathode).

Item Type:	Project Paper
Faculty:	Faculty of Engineering
Depositing User:	Ms. AZLINA ZAINAL ABIDIN
Date Deposited:	24 Oct 2023 02:53
Last Modified:	24 Oct 2023 02:53
URI:	http://psaspb.upm.edu.my/id/eprint/1597

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