Document Type

Article

Publication Date

11-2016

Abstract

Industrial ceramic wastes are becoming an increasing problem worldwide. Recently, this problem has attracted social concern due to the growing amounts of waste despite the measures and precautions that have been taken worldwide aiming at managing such wastes. One promising solution that has been recently researched consists incorporating such wastes in ceramic bodies which besides minimizing the waste load often improve the quality of the ceramic body. Roller kilns used in the production of ceramic tiles are routinely ground to remove traces of contamination. The fine ground powder is usually discarded as a useless waste. In the present paper, the kiln rollers grind waste is recycled and used as raw material in the production of stable, highly active nanosize ceramic membranes for use in water desalination. The powder waste was analyzed by XRF for chemical composition, XRD for mineralogical composition, DTA and TGA for thermal analysis, TEM, and particle size distribution. The support ceramic membrane samples were formed into disks by using organic binder (PVA) with different concentrations, and pressing at 25 MPa, drying then firing at temperatures ranging from 1100 to 1300 °C for 1, 2, and 3 hours soaking time. The following properties were then investigated: Apparent and closed porosity, bulk density, water absorption. Preliminary trials for water flux and salt rejection were also performed on salty water.

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