Search academic texts

Information × Registration Number 0213U003609, 0112U000039 , R & D reports Title Physico-chemical study of new sorption-catalytic methods of water purification from trace elements popup.stage_title Head Mamchenko Aleksey Vladimirovich, Registration Date 08-02-2013 Organization A.V Dumansky Institute of Colloid Chemistry and Water Chemistry popup.description2 Object of study - enriched manganese oxide-carbonate ore (EMOCO), dolomite, samples of sorbents, catalysts synthesized on their basis. Purpose - to determine the structural and sorption properties of natural ores and sorbents synthesized on their basis. Methods and apparatus: method of low temperature nitrogen adsorption (Quantachrome Instruments 2.01); radiographic method (DRON - 1); scanning electron microscope JSM-6060 LA; the method of electron microscopy with microprobe analyzes at the point and type morphology; IR-spectrophotometer Tensor 37 Bruker. main results. It first investigated the oxide-carbonate manganese ore as a material for preparation of sorbent-catalyst for purifying water from manganese compounds. It was found that heat treatment of ores leads to activation of the surface due to the decomposition of carbonate manganese oxides, as well as cracking of existing and creation of new pores. Chemical modification promotes the formation of crystalline layer on the surface. The presence of manganese ore in stock for strong connections catalytic film basis, unlike the Dolomites, where manganese impurity is about 0.1%. For samples of sorbent-catalyst based EMOCO set microstructural features of the main mineral phases, mikroheterogeneity, mikrostructure rock-forming minerals, determined the size and shape of inclusions contained in them. The presence of quartz within the oxide-carbonate manganese ore during processing of the state of sorbent-catalyst has a positive effect on the hydrodynamics of the process of purification. For a series of samples from dolomite ore confirmed homogeneity main phase with a single layer of texture and stability of heat-activation. But after stage chemical modification of surface samples sorbent-catalyst based on dolomite performance water far below the standards of sorbent-catalyst based EMOCO. Area of application of the results - water treatment and purification of water. Product Description popup.authors Герасименко Наталія Гаврилівна Дмитренко Юлія Олександрівна Косигіна Ірина Михайлівна Савченко Ольга Олександрівна Семенюк Дмитро Володимирович Тюлєнєва Людмила Володимирівна Чернова Наталія Миколаївна popup.nrat_date 2020-04-02 Close