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Готові списки джерел за темами / Galvanic waste treatment

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Добірка наукової літератури з теми "Galvanic waste treatment"

Автор: Grafiati

Опубліковано: 10 березня 2023

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Статті в журналах з теми "Galvanic waste treatment"

1

de Mello-Castanho, Sonia Regina Homem, Antônio Carlos da Silva, Wilson Acchar, and Ana M. Segadães. "Corrosion Behaviour of Vitrified Heavy Metals from Industrial Waste." Advances in Science and Technology 45 (October 2006): 178–83. http://dx.doi.org/10.4028/www.scientific.net/ast.45.178.

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The vitrification process is an attractive route for the inertization treatment of hazardous industrial wastes. The corrosion resistance of this kind of materials is one of the most important requirements to ensure the long term retention of the toxic metals. In this work, silicate glasses with various waste concentrations were obtained using a galvanic sludge from metallurgical activities and glass forming rejects from ceramic activities. Glasses with several galvanic waste concentrations were obtained. The corrosion behaviour of the vitrified materials under various pH media was evaluated. The FTIR technique was used to investigate the glass structural modifications. Glasses containing 40 wt.% galvanic waste additions show higher resistance to corrosion media than those without waste additions.

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2

Makisha, Nikolay, and Maria Yunchina. "Methods and solutions for galvanic waste water treatment." MATEC Web of Conferences 106 (2017): 07016. http://dx.doi.org/10.1051/matecconf/201710607016.

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3

Shaikhiev, I. G., T. K. T. Nguyen, R. Z. Galimova, and V. O. Dryakhlov. "LEANING THE GALVANIC WASTE WATER OF THE COMPANY «THIEN MY» (VIETNAM) USING SAWDUST AND ION EXCHANGE." Construction economic and environmental management, no. 1 (2020): 36–41. http://dx.doi.org/10.37279/2519-4453-2020-1-36-41.

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The technology for wastewater treatment of galvanic production was developed for «Thien Mi» LLC, Vinh Fuk, Socialist Republic of Vietnam. Initially, a characteristic of the existing method for the extraction of heavy metal ions from electroplating is given. It was revealed that the treatment of wastewater from galvanic plants with a suspension of calcium hydroxide leads to the formation of a large volume of galvanic sludge and an insufficient degree of purification from heavy metal ions. The possibility of sorption purification of the galvanic drains of the named enterprise using the sawdust of acacia (Acacia auriculiformis) as a sorption material was investigated. The adsorption isotherms of Cu2+, Ni2+, and Zn2+ ions with native sawdust of acacia were constructed. Sorption material was processed with weakly concentrated solutions of sulfuric acid, which leads to an increase of more than 4 times in the sorption capacity of the mentioned ITMs. The post-treatment of galvanic solutions from heavy metal ions was carried out using the Lewatit Monoplus TP 207 ion-exchange resin. The toxicity of the initial galvanic drains was investigated after each cleaning step using standard test objects Paramecium caudatum and Daphia magna. As a result of the studies, sorption and ion-exchange methods are recommended for the treatment of wastewater of galvanic production of small volumes, which can significantly reduce the concentration of heavy metal ions in purified solutions.

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4

Bykovsky, N. A., E. A. Kantor, P. A. Rahman, L. N. Puchkova, and N. N. Fanakova. "Electrochemical treatment of waste water from nickel in galvanic production." IOP Conference Series: Earth and Environmental Science 350 (November 15, 2019): 012029. http://dx.doi.org/10.1088/1755-1315/350/1/012029.

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5

Savin, Cristian, Carmen Nejneru, Manuela Cristina Perju, Costica Bejinariu, Diana Burduhos-Nergis, and Andrei Victor Sandu. "Galvanic Corrosion of Ductile Cast Iron Coupled with Different Alloys in Synthetic Domestic Waste Water." Revista de Chimie 70, no. 2 (March 15, 2019): 506–11. http://dx.doi.org/10.37358/rc.19.2.6945.

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Waste water is an aggressive environment for transport pumps to treatment plants. The pumps used are generally, immersion pumps and are made of various elements like, rotor, stator, housing, screws, flanges, springs, seals, etc. The construction elements of the pumps are made of various metallic materials, such as nodular cast iron, gray cast iron, low alloy steel, stainless steel, aluminum, bronze, brass, copper, etc. When immersed in waste water, the metals form galvanic series. The paper presents the galvanic corrosion analysis of the above-mentioned metals in case the corrosive environment is waste water with various compositions.

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6

Khalchenko, Irina G., Nikolai P. Shapkin, and Anton L. Shkuratov. "Development of the technology of separated treatment of galvanic bath waste streams with subsequent heavy metals precipitation." Water Practice and Technology 12, no. 1 (March 1, 2017): 117–22. http://dx.doi.org/10.2166/wpt.2017.013.

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Physical-chemical methods of separated decontamination of highly concentrated waste streams from galvanic (electroplating) baths containing nickel, copper, and zinc ions using modified forms of vermiculite have been suggested. At the first stage, decontamination is performed by the method of coagulation using a detergent solution (decontamination degree up to 99%). Thereafter, the produced low-concentration solutions underwent electrochemical treatment with addition of sodium chloride using ruthenium oxide coated titanium anode and cathode. The third stage of extra adsorption decontamination by vermiculite-based sorbents was introduced for nickel- and copper-containing galvanic waste streams. The highest degree of decontamination from nickel and copper was attained using the vermiculite treated by 12% hydrochloric acid and cellulose.

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7

Krstic, Ivan, Slavica Zec, Vesna Lazarevic, Miodrag Stanisavljevic, and Tatjana Golubovic. "Use of sintering to immobilize toxic metals present in galvanic sludge into a stabile glass-ceramic structure." Science of Sintering 50, no. 2 (2018): 139–47. http://dx.doi.org/10.2298/sos1802139k.

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Анотація:

Galvanization process requires the use a large amount of water and produces wastewaters that are usually purified by conventional cost-effective procedure. This kind of treatment generates waste sludge which becomes a hazardous if is not properly stabilized. Hence, the aim of this paper is to investigate the characteristics of galvanic sludge through the inspection of its physicochemical parameters and consider stabilization of waste materials, including waste glass and aluminum slag by their conversion into an eco-designed material referred to as glass ceramics. The obtained products have been studied by X-ray diffraction (XRD). XRD analyses confirmed occurrence of chemical and phase transformations in treated galvanic sludge and binding of toxic metals (Al3+, Cr3+, Cu2+, Cd2+, Ni2+, Pb2+, Zn2+) into crystalline phases and very sTab. structure.

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8

Krivenko, Pavlо, Oleksandr Kovalchuk, and Anton Pasko. "Utilization of Industrial Waste Water Treatment Residues in Alkali Activated Cement and Concretes." Key Engineering Materials 761 (January 2018): 35–38. http://dx.doi.org/10.4028/www.scientific.net/kem.761.35.

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Анотація:

The paper discloses an effective way of utilization of industrial waste water treatment residues. The wide use of industrial waste water in building materials is difficult due to the presence of heavy metal. However, alkali activated cements showed high ability of immobilization of heavy metals. The compressive strength of AAC systems with water treatment residues (galvanic process waste water) is up to 40 MPa in mortars and 45 MPa in concretes. The leaching behaviour of heavy metals from the cements matrix after soaking up to 28 days was also examined with AAS.

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9

Zalyhina, Volha S., and Victoria I. Cheprasova. "OBTAINING NICKEL-CONTAINING PIGMENTS FROM LIQUID WASTE GALVANIC PRODUCTION." JOURNAL OF THE BELARUSIAN STATE UNIVERSITY ECOLOGY 2 (2021): 84–92. http://dx.doi.org/10.46646/2521-683x/2021-2-84-92.

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Spent electrolytes from galvanic production are characterized by a high content of heavy metal ions, which significantly exceeds their content in natural ores. The paper shows the possibility of processing spent sulfate electrolytes from nickel plating of galvanic production to obtain pigments, which will stabilize the operation of treatment facilities, prevent the ingress of heavy metal ions into the environment, which have toxic, mutagenic and carcinogenic effects, reduce the volume of wastewater sludge formed, and also obtain a valuable commodity product that is currently being purchased abroad. The results of investigations of the coloristic characteristics of the obtained samples of pigments are presented, the effect of Fe (III) ions present in the spent electrolytes of nickel plating as a contaminant on the color characteristics and purity of the color of the obtained samples is investigated. The dependence of the color of the obtained samples on the content of Fe (III) ions in the spent electrolytes was established, which made it possible to establish the range of coloristic characteristics of pigments obtained from spent sulfate nickel-plating electrolytes (green, yellow, brown and black colors). The results of the research carried out will reduce the impact of galvanic production on the environment.

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10

Oreščanin, Višnja, Ivanka Lovrenčić Mikelić, Robert Kollar, Nenad Mikulić, and Gordana Medunić. "Inertisation of galvanic sludge with calcium oxide, activated carbon, and phosphoric acid." Archives of Industrial Hygiene and Toxicology 63, no. 3 (September 25, 2012): 337–44. http://dx.doi.org/10.2478/10004-1254-63-2012-2171.

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Анотація:

In this study we compared three methods for the treatment of electroplating sludge highly loaded with zinc and iron: (1) calcium oxide-based solidifi cation/stabilisation; (2) conversion into inert material by adsorption of organic and inorganic pollutants onto activated carbon; and (3) conversion of mobile waste components into insoluble phosphates. All three methods proved highly effi cient in the conversion of hazardous waste into inert material. Under optimum treatment conditions zinc concentration in the leachate of solidifi ed waste was reduced by 99.7 % compared to untreated sludge. Zinc retention effi ciency in the waste treated with activated carbon and phosphoric acid was 99.9 % and 98.7 %, respectively. The advantages of electroplating sludge treatment with activated carbon over the other two methods are high sorption capacity, insignifi cant pH and volume changes of the sludge, and simple use.

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Більше джерел

Дисертації з теми "Galvanic waste treatment"

1

Мельник, Олена Сергіївна, Елена Сергеевна Мельник, and Olena Serhiivna Melnyk. "Eco-technological procedure of the waste water and sludge treatment of the galvanic process." Thesis, Видавництво СумДУ, 2007. http://essuir.sumdu.edu.ua/handle/123456789/8329.

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2

Melnik, E. S. "Eco-technological procedure of the waste water and sludge treatment of the galvanic process." Thesis, Вид-во СумДУ, 2007. http://essuir.sumdu.edu.ua/handle/123456789/17402.

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Анотація:

The subject of the paper is eco-technological procedure of the wast water treatment of galvanic process with the following processing of sludge generated during the conventiotal purification of the waste water. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/17402

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3

COLICA, GIOVANNI. "Use of microorganisms in the removal of pollutants from the wastewater." Doctoral thesis, 2007. http://hdl.handle.net/2158/572496.

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Тези доповідей конференцій з теми "Galvanic waste treatment"

1

Rigoulet, Hana, Silvie Brozova, Jaromir Drapala, and Ales Sliva. "HYDROMETALLURGICAL METHODS OF GALVANIC SLUDGE RECYCLING." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/4.1/s18.25.

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Анотація:

The paper deals with the possibility of obtaining zinc and iron from waste galvanic sludge, which arises during galvanic plating. Galvanic sludges, which contain more significant amounts of heavy metals, form wastes that are suitable for recycling. These arise during the treatment of wastewater from the operation of the electroplating plant. It is a mixture of metal hydroxides, mainly iron, zinc, chromium, and others. The sludge is sedimented in the reaction wells and, after sedimentation, is pumped into the sludge sump. From there, they are drained in a sludge press by a sludge pump. Subsequently, dewatered sludge is formed, which is accumulated in containers. Hydrometallurgical methods are used for sludge treatment. The aim of the experimental part was to obtain zinc and iron after leaching of galvanic sludges. Leaching was performed in sulfuric acids at different temperatures and time intervals. The main part of the experimental work was to determine the most suitable conditions for achieving the maximum yield of zinc and iron. The practical part describes laboratory experiments of the hydrometallurgical process of leaching in acids, with the addition of oxidizing agents. Subsequent chemical analyzes of leachate and leachate. Finally, other procedures for possible recovery of metals as secondary raw materials are indicated.

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2

Vilarinho, Cândida, José Teixeira, Jorge Araújo, and Joana Carvalho. "Effect of Time and Acid Concentration on Metal Extraction From Galvanic Sludges." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71370.

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Анотація:

Galvanic sludge is a solid waste produced by the surface treatment industry, classified as hazardous because of their high concentration of heavy metals, which in its final destination is disposed in waste disposal facilities, with economic costs to the holders. Through hydrometallurgical processing, it is possible to extract valuable metals, with low costs involved, while the hazardous level of the residue is reduced. In the present work, the heap leaching method was studied as a solution to the treatment of these residues, which in order to consist in a valuable option, processing and operation costs must be kept as low as possible. For the experimental testing, a closed loop lixiviation column for hydrometallurgical treatment of galvanic sludge with possibility of continuous flow of the leachate (and static process as well) was constructed, simulating the heap leaching process. The galvanic waste in study, delivered by a local surface treatment company, was both chemically and physically characterized, proving to be rich in valuable metals like Nickel, Chromium and Copper. The waste material was characterized both for physical parameters (grain size) and chemical composition. The lixiviation trials, with a maximum duration of 1 week, were conducted. The influence upon the extraction rate of metals such as Nickel, Chromium and Copper, of parameters such as the concentration of the leaching agent (sulfuric acid) and time were tested. In order to quantify the leachate circulation effect, a static trial was conducted as well. Extraction rates of 35.5 % of Nickel, 14% of Copper and 13.6 % of Chromium were obtained after 6 hours in a dynamic trial, with 100 g/L sulfuric acid solution concentration. The acid consumption rate was correlated with the metal extraction. Finally, the results were compared with others obtained in previous galvanic sludge agitation lixiviation and laterites heap leaching works.

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3

Khalchenko, Nikolai. "DEVELOPMENT OF THE TECHNOLOGY OF LOCAL MINE WATER TREATMENT AND HIGHLY CONCENTRATED WASTE STREAMS FROM GALVANIC BATHS." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/52/s20.035.

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