Synthesis of high-saturation magnetization composites by montmorillonite loading with hexadecyl trimethyl ammonium ions and magnetite nucleation for improved effluent sludge handling and dye removal

BARRAQUÉ F; MONTES M.L.; FERNANDEZ M.A; MERCADER, R. C.; CANDAL R; TORRES SÁNCHEZ, R.M.

APPLIED PHYSICS. A - MATERIALS SCIENCE AND PROCESSING

SPRINGER

Lugar: Berlin; Año: 2020

0947-8396

Organomagnetic clays have been designed and synthesized from montmorilloniteloaded with hexadecyl trimethyl ammonium ions (HDTMA+), to be used in watertreatment systems to minimize the direct manipulation of effluent sludge dyes. Thestructural, magnetic, and hyperfine properties have been determined usingthermogravimetric analysis, X-ray diffraction, scanning electron microscopy, zetapotential measurement, Mössbauer spectroscopy, and a vibrating samplemagnetometer. The Methylene blue and Ponceau 4R (P4R) removal efficiency hasbeen analyzed in batch conditions. The 58% HDTMA+ loaded composite exhibits asaturation magnetization three times higher than the composite without HDTMA+ whilethe surfactant incorporation improved P4R adsorption. The proper HDTMA+ loadingimproves the saturation magnetization and the adsorption capacity of the compositesthus yielding added-value materials from two points of view, magnetic response anddye adsorption capacity.