Table of Contents
Journal of Waste Management
Volume 2013, Article ID 686981, 9 pages
http://dx.doi.org/10.1155/2013/686981
Research Article

Reuse Feasibility of Electrocoagulated Metal Hydroxide Sludge of Textile Industry in the Manufacturing of Building Blocks

1School of Environmental Systems Engineering, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
2Department of Environmental Science, Z. H. Sikder University of Science & Technology, Modhupur, Bhedergonj, Shariatpur, Dhaka 8024, Bangladesh
3Department of Environmental Sciences, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
4Institute of Glass and Ceramic Research and Testing, Bangladesh Council of Scientific and Industrial Research, Dhaka 1205, Bangladesh
5Department of Geological Sciences, Jahangirnagar University, Dhaka 1342, Bangladesh
6Instrumentation and Calibration Service Laboratory, Bangladesh Council of Scientific and Industrial Research, Dhaka 1205, Bangladesh
7Pilot Plant and Process Development Center, Bangladesh Council of Scientific and Industrial Research, Dhaka 1205, Bangladesh
8Department of Environmental Science and Engineering, School of Natural Resources and Environmental Studies, University of Northern British Columbia, 3333 University Way, Prince George, BC, Canada V2N 4Z9

Received 23 November 2012; Revised 4 January 2013; Accepted 12 January 2013

Academic Editor: Weihua Song

Copyright © 2013 Tanveer Mehedi Adyel et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

During the last decade, the growing load of sludge from textile industries, the top foreign exchange earning sector of Bangladesh, is a common nuisance to environmental system and community health. The present study was aimed to minimize the environmental impact from the disposal of Electrocoagulated Metal Hydroxide Sludge (EMHS) by using it as a partial substitute of clay in the manufacturing of construction material like building blocks (BBs). Different batches of normal and pressurized building blocks (NBBs and PBBs, resp.) were prepared using up to 50% EMHS with clay and then fired at a particular temperature. EMHS proportion in the mixture and firing temperature were two key factors determining the quality of BB. BB did not show any deformation or uneven surfaces at any of the examined firing temperature. At higher firing temperature and EMHS proportion, more weight loss and shrinkage of BB were noticed. Higher compressive strength and lower water adsorption were found at lower EMHS content and higher firing temperature. It was explored that NBB and PBB with 20 and 30% EMHS in clay, respectively, and fired at 1050 °C would be usable for nonloading applications; namely, ornamental bricks, decoration purposes, and fence of garden.