Manufacturing silver nano-porous ceramic membrane for disinfection of drinking water by using in-situ reduction method
Abstract
Silver nano-porous ceramic membrane for disinfect drinking water was made by in-situ reduction method. Activated carbon has been used to form porous structure, to disperse silver salts as well as to reduce salts into form of nano silver compounds via formation of CO. When calcined at temperature of 1000 “C, the specific surface area of porous ceramic membranes mounted with nano silver determined by BET was shown to increase of 0.2 m2/g. Rontghen diffraction method evidenced an existence of silver and silver oxide in the porous membrane. The amount of silver floating out in the water evaluated by ICP-MS method was reduced from 16 to 19 times as compared to the nano silver impregnated by scan method. The Conforms and E.coli with 107 CFU/mL was removed completely from water by silver nano porous ceramic membranes.