Adsorptive removal of permanganate anions from synthetic wastewater using copper sulfide nanoparticles

The performance of Copper Sulfide (CuS) was evaluated as sorbent material for Permanganate ions (MnO4-). The influences of pH, MnO4- concentration, sorption time and temperature were inspected. The outcomes of this study approved that the sorbate primary concentration of 1200 mg l(-1) solution pH of 1.5, 90 min sorption time and temperature of 60 degrees C are the optimal conditions for MnO4- sorption by CuS. The study also revealed that the kinetic model of second order and model of Langmuir isotherm describe well the experimental data of this sorption. Furthermore, significant sorption capacities of 769.23, 909.09, 1111.11 and 1250.00 mg g(-1) were resulted at 20 degrees C, 30 degrees C, 40 degrees C and 60 degrees C, one-to-one. Additionally, thermodynamic outcomes confirmed that the nature of MnO4- sorption by CuS is a heat-absorbing and spontaneous.