Environmental effects of using clay bricks produced with sewage sludge: leachability and toxicity studies |
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Authors: | Cusidó Joan A Cremades Lázaro V |
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Institution: | Department of Physics and Nuclear Engineering, Universitat Politècnica de Catalunya, 08190 Sant Cugat del Vallès, Barcelona, Spain. |
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Abstract: | Use of sewage sludge from wastewater treatment plants as a raw material for making clay bricks has been analyzed to be an option to dumping sludges into landfills. This alternative has been shown feasible and interesting due to the high rate of use of ceramic materials in the building sector. However, it meets with some environmental issues and some prejudices on the part of users. This work shows some leachability and toxicity tests (outgassing and offgassing) which demonstrate the environmental compatibility of these ceramic products to be used as building materials and even in deconstruction of the building once its useful life is ended. |
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