Application of activated montmorillonite/metal-organic framework nanocomposites in water remediation

For the purpose of removing Methylene Blue (MB) from an aqueous solution through the adsorptionprocess, the H-MMT/MOF-5 composite (MMT=montmorillonite, MOF= metal-organic framework) wereproduced. Composites made with diverse H-MMT:MOF (w/w%) ratios were used for the MB dye removal tostudy their adsorption characteristics over a 0-30 min time range. The 60% H-MMT/40% MOF-5 compositeshowed the greatest amounts of MB removal. For 60% H-MMT/40% MOF-5 and 70% H-MMT/30% MOF-199, optimum MB removals of 97.52 and 98.73% with maximum adsorption capacities (qmax) of 192.3 and238.09 mg.g-1 were obtained. The experimental data of MB adsorption on H-MMT/MOF-5 compositesfollowed the Langmuir isotherm and pseudo-second-order kinetic model. Therefore, the synthesized HMMT/MOF-5 composites could be effectively used to remove MB from water.

Application of activated montmorillonite/metal-organic framework nanocomposites in water remediation Keywords:

Water treatment , Methylene blue , Adsorption , H-MMT/MOF-5 composites , Langmuirisotherm