Electrochemical copper recovery from galvanic sludge

Huyen, Pham Thanh; Dang, Thuy D.; Tung, Mai Thanh; Huyền, Nguyễn Thị Thu; Green, T. A.; Roy, Sudipta

doi:10.1016/j.hydromet.2016.06.028

Cited by 36 publications

(11 citation statements)

References 36 publications

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“…In [12], the results of studies on the extraction of valuable heavy metal compounds from galvanic sludge by dissolving them in sulfuric acid are presented. However, when applying this method, the issues related to the use of chemically hazardous acid and the subsequent production of commercial products remain unresolved [13].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Development of technology of utilization of products of ferritization processing of galvanic waste in the composition of alkaline cements

Kochetov

Kovalchuk

Samchenko

2020

EEJET

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A study of the products of ferritization processing of galvanic waste: sludge and spent process solutions is carried out. As a result of experiments on dynamic leaching of heavy metal ions, the immobilization properties of the sludge, obtained at different process parameters of ferritization are determined. It is shown that the level of immobilization of heavy metals in ferrite sludge after leaching is 99.96 wt % and in the sludge of traditional wastewater neutralization <97.83 wt %. The studies determine the possibility of reliable utilization of ferritized galvanic waste-introduction into the charge to produce alkaline cements. It is found that the main crystalline phases in the structure of alkaline cements with ferrite sludge are calcite, quartz and heavy metal ferrites. In addition, jelly-like formations are found, which are further capable of crystallization. Such formations reliably bind heavy metals in the chemical structure of cement. It is found that when using up to 10 wt % of ferrite sludge in the total weight of cement, the compressive strength of artificial stone reaches 40 MPa, which meets the requirements of the current standard. The chemical stability of the alkali cement matrix using ferrite sludge is confirmed by the study of leaching of heavy metals for one day in neutral, alkaline and acidic media. It is shown that the degree of immobilization of heavy metal ions in cement with a ferrite sludge content of 30 wt % is >99.98 %. In addition, the concentrations of heavy metal ions during leaching meet the national and international standards for their MPC in drinking water and soil. This approach will allow solving the problem of utilization of hazardous galvanic waste and production of general construction materials

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Development of technology of utilization of products of ferritization processing of galvanic waste in the composition of alkaline cements

Kochetov

Kovalchuk

Samchenko

2020

EEJET

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“…Esse processo gera resíduos com conteúdo variável de zinco, os quais podem ser recuperados. Os principais resíduos encontrados em estudos científicos são o lodo/lama e as cinzas [21][22][23]. Para a recuperação dos resíduos do processo, rotas piro e hidrometalúrgicas vêm sendo implementadas, visando a recuperação do zinco contido nestes resíduos.…”

Section: Resíduos Da Indústria De Galvanização a Fogounclassified

Avaliação Do Potencial De Utilização De Resíduos Da Galvanização À Fogo Para a Recuperação Cruzada De Metais

Tubino¹,

Buzin²,

Kanno³

2019

ABM Proceedings

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Resumo A grande quantidade de metais existentes em alguns tipos de resíduos industriais e sucatas de equipamentos eletrônicos tem levado à busca de novos e mais eficientes métodos de reciclagem destes metais. O objetivo deste estudo é investigar o potencial de utilização de resíduos da indústria de galvanização a fogo para recuperação cruzada de metais, diminuindo a utilização de reagentes e possibilitando a geração de um número maior de produtos numa mesma operação. Ensaios foram realizados com quatro tipos de resíduos deste tipo de galvanização, através de soluções sintéticas de sulfato de cobre e acetato de chumbo, visando verificar o potencial do uso de resíduos da galvanização a fogo para recuperação de cobre e chumbo convenientemente solubilizados a partir de resíduos industriais ou eletrônicos. Os resultados mostraram que dois tipos de resíduos da galvanização à fogo tem potencial significativo para uso na recuperação cruzada de metais.

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“…Recycling of electroplating sludge is up to date, since it is classified in 2-3 hazard waste classes and its processing by using other methods is time and resource consuming [5][6][7]. The application of the obtained composition is relatively simple and allows galvanic sludge utilization as a pore-forming agent and vitreous phase modifier.…”

Section: Introductionmentioning

confidence: 99%

Glazing effect for producing environmentally friendly ceramics for cladding applications

Pavlycheva

Pikalov

Selivanov

2021

Hem Ind

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This paper presents results of comparative studies of environmental safety of ceramic materials, based on a low-plasticity clay with the introduction of galvanic sludge, boric acid and titanium dioxide in 3 different combinations. The experimental samples were manufactured under 15 MPa pressing pressure and at the maximum firing temperature of 1050 oC. Prior to the toxicological experiments, diurnal extracts of the materials into the model neutral and acidic media were obtained. The toxicological safety was determined by using the Daphnia mortality method, and by comparing the maximum permissible concentrations of heavy metals for drinking and household water with the heavy metals? concentrations in diurnal extracts. The presented data show that the combined introduction of all the investigated additives results in the glazing effect of ceramic particles surfaces so that an environmentally safe material can be produced that exhibits sufficiently high-performance properties. The use of low-plastic clay and electroplating sludge expands the raw material base for producing ceramics and allows the disposal of environmentally hazardous compounds of heavy metals contained in electroplating sludge. Ceramic materials based on the developed charge composition can be used for producing items for external cladding for buildings and structures.

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Electrochemical copper recovery from galvanic sludge

Cited by 36 publications

References 36 publications

Development of technology of utilization of products of ferritization processing of galvanic waste in the composition of alkaline cements

Development of technology of utilization of products of ferritization processing of galvanic waste in the composition of alkaline cements

Avaliação Do Potencial De Utilização De Resíduos Da Galvanização À Fogo Para a Recuperação Cruzada De Metais

Glazing effect for producing environmentally friendly ceramics for cladding applications

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