Al-rich sludge treatments towards recycling
authors Ferreira, JMF; Olhero, SM
nationality International
journal JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
author keywords Al2O3; sludge; leaching; recycling; refractories; slip casting
abstract A treatment method towards recycling of Al-rich sludges to produce high-alumina refractory ceramics is proposed. These sludges are collected in wastewater treatment units of industrial plants dealing with anodising or surface coating processes. This industrial residue usually contains significant amounts of soluble salts such as Na, K, Mg, Ca and Al sulphates that make direct recycling problematic. The removal of these salts from the as-received sludges by washing is ineffective due to its gel-like consistency. The treatment consists of calcining and subsequent washing operations, followed by removal of sulphates by precipitation as BaSO4. The treated sludges could then be well dispersed and processed by slip casting. (C) 2002 Elsevier Science Ltd. All rights reserved.
publisher ELSEVIER SCI LTD
issn 0955-2219
year published 2002
volume 22
issue 13
beginning page 2243
ending page 2249
digital object identifier (doi) 10.1016/S0955-2219(02)00023-7
web of science category Materials Science, Ceramics
subject category Materials Science
unique article identifier WOS:000177723900020
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  impact metrics
journal analysis (jcr 2019):
journal impact factor 4.495
5 year journal impact factor 4.283
category normalized journal impact factor percentile 98.214
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