Thermodynamic, Kinetic and Isotherm Study of 4-chloro-2-methyl Phenoxy Acetic Acid (MCPA) by (PV/S-g-3D-GO/N) from Aquatic Solutions
Abstract BackgroundIn this study removal efficiency of 4-chloro-2-methyl-phenoxy acetic acid (MCPA) by 3D polymer nano-magnetic (PV/S-g-3D-GO/N) was investigated.MethodsThe effects of operation parameters including adsorbent mass, influent flow rate and inlet concentration on the adsorption performance are investigated.ResultsMaximum adsorption capacity (4.36 mg/g) was achieved at optimum conditions (pH: 3, contact time: 300 min, adsorbent dosage: 5 g/l and temperature: 50 °C). Moreover, adsorption isotherm and kinetics were agreed with the Langmuir model (R2 = 0.997) and pseudo-second-order model (R2 = 0.999), respectively. Thermodynamic studies also show that adsorption process was spontaneous (ΔG < 0) and endothermic (ΔH > 0).ConclusionAccording to removal efficiency (100%), this adsorbent is an excellent alternative for removal herbicide in high temperature industry.