Construction materials as a waste management solution for cellulose sludge
authors Modolo, R; Ferreira, VM; Machado, LM; Rodrigues, M; Coelho, I
nationality International
abstract Sustainable waste management system for effluents treatment sludge has been a pressing issue for pulp and paper sector. Recycling is always recommended in terms of environmental sustainability. Following an approach of waste valorisation, this work aims to demonstrate the technical viability of producing fiber-cement roof sheets incorporating cellulose primary sludge generated on paper and pulp mills. From the results obtained with preliminary studies it was possible to verify the possibility of producing fiber-cement sheets by replacing 25% of the conventional used virgin long fiber by primary effluent treatment cellulose sludge. This amount of incorporation was tested on an industrial scale. Environmental parameters related to water and waste, as well as tests for checking the quality of the final product was performed. These control parameters involved total solids in suspension, dissolved salts, chlorides, sulphates, COD, metals content. In the product, parameters like moisture, density and strength were controlled. The results showed that it is possible to replace the virgin long fibers pulp by primary sludge without impacts in final product characteristics and on the environment. This work ensures the elimination of significant waste amounts, which are nowadays sent to landfill, as well as reduces costs associated with the standard raw materials use in the fiber-cement industrial sector. (C) 2010 Elsevier Ltd. All rights reserved.
issn 0956-053X
year published 2011
volume 31
issue 2
beginning page 370
ending page 377
digital object identifier (doi) 10.1016/j.wasman.2010.09.017
web of science category Engineering, Environmental; Environmental Sciences
subject category Engineering; Environmental Sciences & Ecology
unique article identifier WOS:000286411400020
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