Springer Online Journal Archives 1860-2000
Process Engineering, Biotechnology, Nutrition Technology
Summary We compare the efficiency of adsorption-elution methods using microfiberglass or glass powder adsorbents for concentrating indigenous viruses from secondary wastewater effluents sampled in two different cities in France. Analysis of 18 samples using both methods allowed recovery of viruses in all cases, with average concentrations of 2.7 to 29 MPNCU/1. Virological quantification gave better results with the glass powder method in 13 out of 18 cases. Using a new MPN technique which gives good 95% confidence limits, the results obtained with glass powder were statistically better than those obtained with microfiberglass only in 5 out of 9 experiments. From these data, it is very difficult to choose one or another method when only the average number of recovered viruses are considered. Cost and technical limitations (such as processing time, fragility of equipment and clogging) which are discussed here, must also be considered when making this choice.
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