Enhanced removal of Indigo Carmine dye from textile effluent using green cost-efficient nanomaterial: Adsorption, kinetics, thermodynamics and mechanisms

The release of Indigo Carmine in waterbodies may cause serious impact aquatic ecosystems and human health. There is an interest developing green, low-cost effective adsorbents for the removal toxic dyes from textile effluents. This study proposed adsorbent material at nanoscale using waste Moringa oleifera seeds generated after oil extraction. were grounded to obtain nanoscale. Batch-adsorption tests carried out evaluate capacity absorbent retain liquid solutions. following variables studied: pH, adsorbent-dye ratio, contact time, initial dye concentration temperature. adsorption process fitted Langmuir isotherm equilibrium power function kinetic behavior. maximum nanoparticles was 60.24 mg/g, which 4.3 times higher than that bulk seeds. Thermodynamic results proved spontaneous exothermic. Hydrogen bonding, electrostatic interlinkage π–π interactions identified as dominant mechanisms on nanoparticles. adsorption-desorption resulted a slight decrease 4 cycles, 94% 88%. effluent (85%) similar with pure solutions (91%). suggested feasibility seed promising, green low cost wastewaters dyes.