Registration Number
0224U032291,
0122U201291
, R & D reports
Title
Scientific and practical aspects of chemical technologies for the liquid and solid anthropogenic waste disposal
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Науково-практичні аспекти хімічних технологій знешкодження рідких і твердих антропогенних відходів
Head
Ivanchenko Anna V., Доктор технічних наук
Registration Date
03-09-2024
Organization
Dniprovsk State Technical University
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The optimal parameters for the extraction of rare earth elements from phosphogypsum, the processing temperature, and the concentration of nitric acid were determined. The equation of multiple regression of the process of extraction of rare earth elements concentrate from phosphogypsum was obtained. The regularities and optimal conditions for the extraction of heavy metals by a natural lignocellulosic sorbent have been established. The limiting stage of the adsorption process of heavy metal ions is chemical interaction, the value of the activation energy is 34.36–41.22 kJ/mol. The optimal consumption of acid-activated lignocellulosic sorbent with vinegar essence with a concentration of 65 % wt. for the extraction of dyes from liquid waste and the recommended contact time were determined. The dependences between the density of briquettes obtained from coke oven sludge and pressure were established. The dependence of the process of phosphate extraction from municipal wastewater on the consumption of phosphogypsum was determined. The use of bischofite in the technology of mineral fertilizers is proposed, and the influence of non-equilibrium low-temperature plasma on water treatment processes is revealed. The sorption of pollutants on glauconite was modeled and the geometry of the system was optimized. For the first time, the influence of the species origin of fallen leaves on the performance of a liquid waste filtering plant was revealed, which made it possible to justify a new way of utilization. A zeolite-containing sorbent for the extraction of heavy metals, mine water reclamation, and lithium extraction was obtained. The mechanism of metal ions extraction from sludge water using a zeolite sorbent was established. A filtration plant based on fallen leaves for the extraction of nitrogen compounds and suspended solids is proposed. The technological scheme of the heavy metal extraction unit by adsorption method and the design of the adsorber were developed.
Product Description
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Yelatontsev Dmytro O.
Belianska Oleksandra R
Kravchenko Оleksandr V.
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2024-10-01
