An in vitro Evaluation of AOP Versus Chemical Based Poultry Water Sanitizers for Residual and Efficacy over Time
DOI:
https://doi.org/10.3923/ijps.2015.506.510Keywords:
AOP, microbes, residuals, water sanitizersAbstract
A bench top experiment was conducted to test three commercially available water sanitizing products for residuals and efficacy over time. Product A uses modified ambient oxygen to create hydroxyl ions in water and works based on an Advanced Oxidation Process (AOP). Product B is 50% stabilized hydrogen peroxide and Product C is 5.25% sodium hypochlorite. Two trials were conducted. Test solutions for Product A were made by infusing gas at 0.33 Liters Per Minute (LPM) diffusing into 1 liter of suboptimal water (microbial load >4.47 log10 cfu/ml; Chlorine (Cl) residual = 0 ppm). Stock solutions were first prepared for Product B and C. Stock solution for Product B was prepared at two different doses, 2 and 4 ml of the product, mixed with 128 ml of deionized water (Cl = 0 ppm) separately whereas for Product C, the stock was created mixing 4 ml of the product with 128 ml of deionized water. Test solutions for Product B and C that actually mimic the bird drinking rate were then made from each stock solution mixing at the rate of 1 ml of stock solution added to 128 ml of suboptimal water for a volume of 1L of suboptimal water. Water samples were taken for test solutions over a period of 24 h post treatment and plated for aerobic bacteria (APC) and mold counts. Residual levels for all the products were taken into account at each water sampling occasion. Results indicated that the AOP method can be used as an alternative water sanitation measure over the chemical methods.
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