Water Purification by Microfiltration Ceramic Membranes Modified with Pyrocarbon and Silica

Abstract

Ultrafiltration membranes were obtained by means of modification of microfiltration ceramic membranes with pyrocarbon from polyisocyanate and sodium carboxymethyl cellulose. For Ca²⁺ the retention factor and the specific productivity of the modified membranes depend on their composition and filtration time of the solution being purified and vary from 70 to 2% and from 96 to 4.7 dm³ /(m²·h) (P—1.1 MPa). The retention factor of direct scarlet dye is 99.99% at the specific productivity from 2 to 19.7 dm³/(m²·h) (P—1.2 MPa).