Registration Number
0223U003921,
0122U201107
, R & D reports
Title
Chemical and ecological features of technological processes of processing and production waste
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Head
Nenastina Tetiana O., Доктор технічних наук
Registration Date
21-07-2023
Organization
Kharkiv National Automobile and Road University
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The object of research is the processes of chemical dissolution of the BrB2 alloy in
different electrolytes taking into account complexation processes, ionic
equilibria in the electrolyte volume, palladium deposition, copper regeneration and
tank containing wastewater, radiation properties of blast furnace slags.
The purpose of the work: the choice of the electrolyte composition during electrochemical
palladium deposition to obtain high-quality coatings, technological optimization
processes of metal processing on the example of BrB2 alloy and regeneration of Cu/Zn-
containing waste water of galvanic production, research of radiation
characteristics of waste blast furnace slags to assess their feasibility
use as raw materials in the production of environmentally safe
building materials.
Research methods – potentiometric method, gravimetry, determination
hardness of alloys according to Brinell, projection method of complex distribution
particles, gamma spectrometric analysis.
Palladium forms deprotonated mono- and dipyrophosphate complexes at
pH=8−11. It was established that when the concentration of the ligand exceeds
50 times the concentration of the complexing agent, a stable complex is formed
Pd(P2O7)26−. In the presence of ammonia, an even more stable one is formed
polyligand complex Pd(NH3)P2O72−. Working pH interval of the electrolyte
deposition of palladium is рН=9−10, in this interval most are formed
strong polyligand complexes.
The influence of complexation processes on the speed and
selectivity of dissolution of BrB2 alloy in solutions of different composition.
Compositions of pickling solutions for high-speed and
uniform etching of beryllium bronze.
Product Description
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Egorova Lilia M
Datsenko Vita V
Nenastina Tetiana O.
Khobotova Elina B
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2023-07-21
