Wastes Solids
Mostrando 25-27 de 27 artigos, teses e dissertações.
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25. Assessment of recovery efficiency of beef extract reagents for concentrating viruses from municipal wastewater sludge solids by the organic flocculation procedure.
This study was designed to assess the capacity of beef extract reagents to form flocs suitable for virus adsorption. Reagent comparisons resulted in the establishment of a modified organic flocculation procedure to concentrate viruses desorbed from sewage sludge solids with currently available modified powdered beef extracts. The method, based on supplementa
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26. In situ inactivation of animal viruses and a coliphage in nonaerated liquid and semiliquid animal wastes.
The persistence of five animal viruses, representing picorna-, rota-, parvo-, adeno-, and herpesviruses, and the coliphage f2 was determined in the field by exposing the viruses to different animal wastes and by adopting an established filter sandwich technique. This technique allows us to copy the natural state of viruses in the environment, where adsorptio
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27. Effect of Dietary Monensin or Chlortetracycline on Methane Production from Cattle Waste
Wastes from feedlot cattle fed finishing diets containing either monensin, chlortetracycline, or no antibiotic were investigated as substrates for methane production. We used continuously mixed anaerobic fermentors with 3-liter working volumes at 35 and 55°C; these fermentors were fed once per day. Within a few days after waste from animals fed monensin was