Surface modification of mixed sorbents with sulfide ions for purification of galvanic wash water of copper plating process

Худоярова, Ольга Степанівна; Гордієнко, Ольга Анатоліївна; Сидорук, Тетяна Іванівна; Titov, Taras; Ранський, А. П.

doi:10.20535/2617-9741.2.2020.208054

Cited by 2 publications

(2 citation statements)

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“…Regeneration of the spent mixed sorbent (AC+K) after the stage of purification of sugar syrup production of soft drinks was carried out according to the method described in works [6,7]. Methods of purification of water-sugar solutions are described in work [7], sulfide-alkaline solutions -in work [8][9][10][11], washing waters of the electrochemical copper plating process -in work [12]. Regeneration of waste industrial oils was carried out according to the method presented in work [13].…”

Section: Methodsmentioning

confidence: 99%

“…To increase the sorption capacity, it is popular to modify the sorption matrix using harmless and available reagents. Analysis of recent research and publications [9][10][11][12]13] has shown that the joint processing and disposal of waste from different industries allows you to remove valuable chemical compounds and significantly improve the ecological condition of the environment in their storage. The complex utilization of industrial waste studied today concerns, first of all, reagent extraction of metal cations from sewage of galvanic productions and other chemical wastes by their interaction and formation of waterinsoluble chemical compounds.…”

Section: Introductionmentioning

confidence: 99%

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Technology of Complex Sorption Treatment of Industrial Wastewater From Sulphide and Copper(ii)–iones

Khudoyarova¹,

Ranskiy²,

Gordienko³

2021

WPT STN

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Complex processing of industrial waste of individual industries, including wastewater treatment, containing sulfur anions and cations of heavy metals, in order to obtain both purified water and finished industrial products is an urgent task for today. The possibility of efficient use of regenerated mixed sorbent (AC+K), containing activated carbon (AC) and diatomaceous earth (K), for wastewater treatment of certain technological processes of chemical (petrochemical) industry and galvanic industries has been shown. The sorbent with the removed contaminants was offered to be utilized as a part of plastic lubricants of special purpose. The technological process of complex sorption treatment of industrial wastewater from sulfide and copper (II) ions includes the following main stages: sorbent regeneration; purification of sulfide-alkaline solutions; purification of washing waters of galvanic productions; obtaining plastic oils. The basic technological scheme of the site of regeneration of the spent mixed sorbent (AC+K) and purification of water-sugar solutions from organic impurities was developed. The material balance of regeneration of the spent mixed sorbent was calculated. The basic technological scheme of the site of combined treatment of industrial wastewater from sulfide and copper (II) ions, regeneration of spent industrial oils with regenerated sorbent (AC+K) and production of plastic oils has been developed. It was shown that the technology of complex sorption wastewater treatment is based on the most common technological processes - heating, cooling, adsorption and filtration and does not require complex schemes of automatic process control, and chemical equipment is typical for chemical enterprises in Ukraine. The economic effect of production of special purpose plastic oils was calculated.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Technology of Complex Sorption Treatment of Industrial Wastewater From Sulphide and Copper(ii)–iones

Khudoyarova¹,

Ranskiy²,

Gordienko³

2021

WPT STN

View full text Add to dashboard Cite

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Receiving of New Carbon-Sulfur-Containing Plastic Lubricants Based on Regenerated Products and Used Sorbents

Khudoiarova

Blazhko

2023

KEM

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The work is devoted to the solution of the actual problem of waste management and its use for obtaining useful technical products, in particular, special purpose plastic lubricants. The research has been conducted on the use of spent sorbents after complex adsorption purification of industrial wastewater from Cu2+, S2– and HS–-ions in the composition of plastic lubricants. The composition of the latter includes a solid modified surface of sorbents [(activated carbon + kieselguhr) + CuS + S] and regenerated industrial oil I-40A. High operational properties of plastic lubricants are provided by modification of the solid surface of the components, on which there are active centers for chemisorption. The surface modification of activated carbon has been carried out in order to obtain [Cu(µ-S5)]2 or CuS2 as possible equivalent substitutes for MoS2. It was established that the chemical interaction of the pentasulfide anion and the copper (II) cation ends with the formation of a planar six-coordinated chelate center CuS4(Н2О)2 on the surface, followed by its destruction and the formation of copper (II) sulfide and elemental sulfur. Activated carbon acts not only as a sorbent, but also as an active catalyst of topochemical reactions on a solid surface. Modification of the kieselguhr surface is caused by the presence of active centers on its surface – silanol groups –OH, which are subject to esterification. The developed plastic lubricants provide the necessary operational properties of heat-resistant industrial lubricants.

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Surface modification of mixed sorbents with sulfide ions for purification of galvanic wash water of copper plating process

Cited by 2 publications

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Technology of Complex Sorption Treatment of Industrial Wastewater From Sulphide and Copper(ii)–iones

Technology of Complex Sorption Treatment of Industrial Wastewater From Sulphide and Copper(ii)–iones

Receiving of New Carbon-Sulfur-Containing Plastic Lubricants Based on Regenerated Products and Used Sorbents

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