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).

中文翻译：

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焦炭和二氧化硅改性的微滤陶瓷膜净化水

通过用来自多异氰酸酯和羧甲基纤维素钠的热碳对微滤陶瓷膜进行改性来获得超滤膜。对于Ca ²⁺，改性膜的保留因子和比生产率取决于其组成和纯化溶液的过滤时间，范围从70％到2％，从96 dm到4.7 dm ³ /（m ² ·h）（P -1.1 MPa）。在从2到19.7 dm ³ /（m ² ·h）（P -1.2 MPa）的比生产率下，直接猩红色染料的保留因子为99.99％。