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Incorporation of sewage sludge in clay brick and its characterization


Abdullah, Abdul Ghani Liew and Idris, Azni and Wong, Calvin Hong Kiat and Abdul Samad, Abdul Aziz and Megat Mohd Noor, Megat Johari and Mohd Baki, Aminuddin (2004) Incorporation of sewage sludge in clay brick and its characterization. Waste Management & Research, 22 (4). pp. 226-233. ISSN 0734-242X; ESSN: 1096-3669


This study reports the use of sewage sludge generated from sewage treatment plant (STP) as raw material in a clay brick-making process. The physico-chemical and mineralogical characterization of the sewage sludge and clay were carried out in order to identify the major technological constraints and to define the sludge pretreatment requirements if necessary. Moreover, the effects on processing conditions and/or on changes of typical final characteristics are also evaluated. Bricks were produced with sewage sludge additions ranging from 10 to 40% by dry weight. The texture and finishing of the surface of sludge-amended clay bricks were rather poor. As for the physical and chemical properties, bricks with a sludge content of up to 40 wt.% were capable of meeting the relevant technical standards. However, bricks with more than 30 wt.% sludge addition are not recommended for use since they are brittle and easily broken even when handled gently. A tendency for a general degradation of brick properties with sludge additions was observed due to its refractory nature. Therefore, sludge bricks of this nature are only suitable for use as common bricks, which are normally not exposed to view, because of poor surface finishing.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.1177/0734242X04044989
Publisher: SAGE Publications
Keywords: Sewage sludge; Utilization; Clay brick production; Physico-chemical; Mineralogical characterization; Wmr 690-4
Depositing User: Nabilah Mustapa
Date Deposited: 09 May 2019 01:26
Last Modified: 09 May 2019 01:26
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1177/0734242X04044989
URI: http://psasir.upm.edu.my/id/eprint/15184
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