Abstract
In this study, a novel nanocomposite (inulin-folic acid/bentonite) was successfully synthesized and was explored for the removal of Cu(II). It was characterized by SEM (Scanning electron microscopy), EDX (Energy dispersive X-ray spectroscopy), XRD (X-ray diffractometer), FTIR (Fourier transform infrared spectroscopy), TGA (Thermogravimetric analysis) and TEM (Transmission electron microscopy) analysis. The surface area (Sear's method) of bentonite and nanocomposite were found to be 23 and 103mg2g−1, respectively. The maximum adsorption capacity was observed at pH5.2, contact time 120min, concentration 100mgL−1, temperature 328K and dose 0.01g, respectively. The Langmuir isotherm and pseudo-second order kinetic model were found to be the best obeyed models. The maximum monolayer adsorption capacity was found to be 208.263mgg−1 at 328K. The thermodynamic studies showed the adsorption was endothermic and spontaneous in nature. The breakthrough and exhaustive capacities were found to be 300 and 1250mgg−1, respectively. The maximum desorption (82.36%) with excellent regeneration capability (up to fifth cycle) was investigated by using 0.1M oxalic acid through column process. The nanocomposite was further utilized in sequestering Cu(II) from electroplating and battery manufacturing wastewater.
Published Version
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