Description
Bench-scale experiments determined the inactivation rates of adenovirus serotype 2 withlow-pressure, high-output ultraviolet (UV) light, chlorine (Cl<sub>2</sub>), and preformed chloramines.Studies with sequential chloramines were also done to mimic water treatment practices.Sequential experiments with adenovirus serotype 2 suspended in laboratory-grade waterand natural waters containing ammonia were exposed to either UV light followed byCl<sub>2</sub>/chloramines or the reverse sequence. Adenovirus log reductions were quantified throughcell culture techniques. A free Cl2 C × T (concentration × time) of 1.22 mg-min/L resulted in a3.72-log reduction, a preformed chloramine C × T of 264.5 mg-min/L resulted in a 1.2-logreduction, a sequential chloramine C × T of 40.5 mg-min/L resulted in a 1-log reduction, anda UV dose of 40 mJ/cm<sub>2</sub> resulted in a 1-log reduction. Up to 4-log reductions were achievedwith a UV dose of 40 mJ/cm<sub>2</sub> followed by a sequential chloramine C × T of 27.2 mg-min/L.This suggests that sequential disinfection may be the best option for dealing with UV-resistantorganisms such as adenoviruses. Includes 39 references, figures.
Product Details
- Edition:
- Vol. 96 – No. 10
- Published:
- 10/01/2004
- Number of Pages:
- 7
- File Size:
- 1 file , 210 KB
- Note:
- This product is unavailable in Ukraine, Russia, Belarus
