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Information × Registration Number 0223U001896, 0122U000870 , R & D reports Title Development of the up to date efficient processes of water purification by microfiltration tubular membranes made of natural materials popup.stage_title Head Honcharuk Vladyslav V., Доктор хімічних наук Registration Date 05-02-2023 Organization A.V Dumansky Institute of Colloid Chemistry and Water Chemistry popup.description2  Objects of research: water purification processes by microfiltration membranes made of natural materials: ceramic (from clay minerals) and lignocellulosic (from wood); fluoride ions and hydroxocompounds of aluminum containing model solutions; water of the r. Dnipro; permeates. The purpose of the work is to study the efficiency of purification, disinfection and defluorination of natural waters by microfiltration membranes made of natural materials, including pre-modified ones, in combination with treatment with Al(III) compounds, and to evaluate the quality of the obtained filtrates by biotesting. Research methods: biotesting, spectrophotometric, colorimetric, atomic absorption, etc. Key results: rational conditions for modifying membranes from natural materials with Al(III) hydroxo compounds for effective water defluorination were investigated. It was established that during the defluoridation of solutions with tubular membranes previously modified with an additional retention layer in the form of a dynamic membrane made of Al(III) hydroxo compounds, the MAC F− for drinking water was reached at an initial F− concentration of up to 20 mg/dm3 for a microfiltration membrane made of clay minerals and up to 15 mg/dm3 for lignocellulosic membrane. It is proposed to use ceramic and lignocellulose membranes for the simultaneous purification of water from Al(III) and F− ions, and the main regularities of the process are established. The high efficiency of the use of membranes of natural materials in the process of cleaning of the r. Dnipro water from suspended substances, Fe, Mn compounds, as well as for reducing its color to indicators lower than their MAC in drinking water, has been confirmed. It was found that when ceramic and lignocellulosic membranes were used for the treatment of the r. Dnipro water, it was completely disinfected from E. coli bacteria and the biotesting method confirmed the production of genetically safe drinking water. Applied field: water treatment. Product Description popup.authors Balakina Margaryta M. Baranov Oleksandr I. Golovkov Andrii M. Demchenko Victor Ya. Deremeshko Liudmyla A. Dulneva Tetiana Y. Kovalenko Vitalii F. Melnyk Liudmyla O. Nanieva Alla V. Samsoni-Todorov Oleksandr O. Saprykina Mariia M. Seminska Olha O. Troianskyi Andrii O. popup.nrat_date 2023-02-05 Close