Adsorption of Viruses on Mineral Surfaces

摘要

The specific aim of this research was to determine the adsorption capacities of selected common minerals for viruses. Bench scale adsorption studies using T4 bacteriophage and the Type I poliovirus (Sabin Strain) and various silicate minerals have been carried out. The minerals used were sillimonite, enstatite, wollastonite, olivine, kyanite, microcline and actinolite. The adsorption of the bacteriophage T4 was related to the acidity of the silicate surfaces. A detailed study of the bacteriophage T4 and its adsorption on silicate minerals showed that the adsorption was related to the electrophoretic mobility. Slightly lower adsorption on the order of 50 to 80 percent was obtained in the adsorption of the poliovirus on the silicate minerals. These lower removals are partly attributed to the different type of virus which was used and also to the higher pH, a pH of 7.0, which was used in this work. A competitive effect on poliovirus adsorption was noted when extraneous organic materials were added either before or after the contact betwween the virus and the silicate material had occurred. Protein such as bovine albumin and egg albumin in concentrations of 1 and 1.5 mg/l were able to decrease the adsorption from 50 to 80 percent to as low as 12 to 20 percent. A domestic sewage secondary effluent decreased the adsorption of poliovirus by the same amount. (Author)