Recycling of Industrial Wastewater by its Immobilization in Geopolymer Cement

Abstract:

In this work, wastewater from Teva Pharmaceutical Industries Ltd., which comprises several organic and inorganic compounds, was solidified in a geopolymer matrix. The addition of wastewater to the polymerization mixture of fly ash based geopolymers yielded a high compressive strength of 50-75 MPa that is similar to that of wastewater-free geopolymer. The leaching of organic compounds from the matrix was examined and it was found to be negligible, about 0.2%wt, and comparable to the amount that leached from a geopolymer matrix made without wastewater. The results indicate that the immersion temperature and the time of immersion have negligible influences on carbon leaching.

• Periodical: Advances in Science and Technology (Volume 69)
• Pages: 180-185
• DOI: https://doi.org/10.4028/www.scientific.net/AST.69.180
• Online since: October 2010
• Authors: Dorith Tavor, Tal Meyohas, Shlomi Ronen, Adi Wolfson
• Keywords: Cement, Fly Ash (FA), Geopolymer, Industrial Waste, Leaching, Recycling, Wastewater

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