Reprocessing of zinc galvanic waste sludge by selective precipitation.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F02%3A50023005" target="_blank" >RIV/61388980:_____/02:50023005 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22310/02:00006457

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Reprocessing of zinc galvanic waste sludge by selective precipitation.

Original language description

Multi-step selective precipitation method was tested for processing zinc waste galvanic sludge. This method involved acid leaching of sludge in sulphuric acid, purification of sulphate leach liquors using a sequence of hydroxide, sulphide, and fluoride precipitation to remove trivalent metals, Cu, Cd, Ca, Mg, and Si, oxidative precipitation to remove Mn, and finally precipitation of Zn as zinc carbonate. The solids were separated from leach liquors after each precipitation step, and their phase composition was determined by X-ray powder diffraction and elemental composition by AAS. The flowsheet proposed yielded relatively pure Zn-precipitate, suitable for possible production of raw materials for ceramic, metallurgical, or pigment industry, however dueto incomplete leaching of the sludge and co-precipitation of Zn to hydroxides of trivalent metals and Cu, Cd-sulphides, the overall recovery efficiency was only 63-65%.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CA - Inorganic chemistry

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2002

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Ceramics Silikáty

ISSN

0862-5468

e-ISSN

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Volume of the periodical

46

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

4

Pages from-to

52-55

UT code for WoS article

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EID of the result in the Scopus database

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