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Evaluation of the Performance of Sustainable Paints Using Red Mud

  • Jean Carlos Bernardes Dias,
  • Leonardo Gonçalves Pedroti,
  • Márcia Maria Salgado Lopes,
  • Hellen Regina de Carvalho Veloso Moura,
  • Júlia Lopes Figueiredo

摘要

Red mudRed mud is a residueResidue 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 mudRed mud as a pigment in sustainable paintPaints production. The residueResidue underwent deagglomeration, mechanical dispersion, and particleParticle sieving, and was characterized physically, chemically, and morphologically. An experimental mixtureMixture design was employed to evaluate paintPaints performance by varying the proportions of red mudRed mud, water, and resin. Statistical analysis determined the optimal composition as 33% residueResidue, 55% water, and 12% resin. This paintPaints demonstrated an abrasion resistance of 126 cycles and a hiding power of 4 m2/L, meeting the requirements for economic paintsPaints. These findings present a sustainable alternative for utilizing red mudRed mud, contributing to the reduction of environmental harm caused by this residueResidue.