Utilization of Textile ETP and Tannery Sludge in Cement Mortar

Abstract

The textile ETP and tannery sludge are waste products that are generated after the treatment of wastewater from ETP and CETP. The textile ETP and tannery sludge have the potential to become a serious environmental burden for Bangladesh in the future because of their high rate of generation, with very limited safe disposal options. On the other hand, day by day the demand and price of cement are increasing. The main purpose of this study is to evaluate the technical feasibility of utilizing textile ETP and tannery sludge in cement mortar both as separate and mixed-mode. An attempt was taken to replace 5%, 10%, 15%, 20% cement by textile ETP and tannery both as a separate and mixed-mode in cement mortar by weight. To evaluate the characteristics of the textile ETP and tannery sludge the pH, moisture content, organic matter content, chemical composition (XRF), TCLP (Heavy Metal) tests are studied. The normal consistency, initial and final setting time, compressive, tensile strength, specific gravity, water absorption of cement mortar by partial replacement of textile ETP and tannery sludge both as separate and mixed-mode are studied to evaluate the properties of cement mortar. Considering the results of this study, it can be said that the textile ETP and tannery both as separate and mixed-mode can be a replacement of cement up to 10% in cement mortar and can be used for the purposes of S-type mortar and the textile ETP sludge as separate and the mixed-mode of textile ETP and tannery sludge can be a replacement of cement up to 20% and can be used for the purposes of N-type mortar.