Evaluation of the Performance of Sustainable Paints Using Red Mud

Red mud is a residue generated in the processing of bauxite for aluminum production and its improper disposal causes significant environmental damage. This study assesses the potential use of red mud as a pigment in sustainable paint production. The residue underwent deagglomeration, mechanical dispersion, and particle sieving, and was characterized physically, chemically, and morphologically. An experimental mixture design was employed to evaluate paint performance by varying the proportions of red mud, water, and resin. Statistical analysis determined the optimal composition as 33% residue, 55% water, and 12% resin. This paint demonstrated an abrasion resistance of 126 cycles and a hiding power of 4 m²/L, meeting the requirements for economic paints. These findings present a sustainable alternative for utilizing red mud, contributing to the reduction of environmental harm caused by this residue.