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| Ultra -Violet Disinfection and Logarithmic Modeling of Pathogenic Giardia lamblia in Aqueous Suspension. |
Benjamin Abu. E, Olabimtan Olabode.H, Aronimo Samuel .B, Akinlotan Oluyinka.O & Onyike Onyinyechi.G
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Abstract:
Pathogenic Giardia of lamblia species is a devastating waterborne agent to public health since their cysts are persistently ubiquitous in water (wastewater) and insensitivity to physical-chemical water treatment processes. Technically, the documented performance of UV radiation against the cells of various pathogenic microorganisms encourages the reactivity of G. lamblia in solution with 254nm wavelength of monochromatic UV light at any significant concentration was computed with Plutocalc water calculator. The systematic deactivations of G. lamblia in solution were captured with twenty-one points of UV dose from (16 ×10-4) µWs.cm2 to (248 × 10-4) µWs.cm2, % removal from 74.9% to 100% and contact time of 60 to 1,260 seconds at an ambient temperature of 25oC. Two logarithmic models were established between the percentage treatment (%T) and UV dose (UV) as %T= 5.187 In (UV) + 74.39 (R2= 0.5470); and between the same percentage treatment and the contact time (CT) of UV the radiation as %T= 6.986 In (CT) + 52.73 (R2= 0.8380). Therefore, the UV disinfection method at practical doses can achieve appreciable and significant treatment of G.lamblia on the water without infectivity reactivation.
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