Akademik Veri Yönetim Sistemi
International Refereed Journal of Engineering and Science, cilt.1, sa.1, ss.1-13, 2024 (Hakemli Dergi)
In order to remove the Al+3 and Cu+2 metals from an chemical industry wastewaters adsorption technology was used with a nanocomposite namely graphene oxide (GO)/ zinc oxide (ZnO) nanocomposite produced under laboratory conditions. The functionalization of GO with zinc oxide nanoparticles (ZnO) improved the adsorption capacity of aluminum (Al+3) and copper (Cu+2). FT-IR spectra of GO, ZnO and GO/ZnO exhibited maximum absorption bands at 3401 1/cm 1842 1/cm and 1197 1/ cm corresponding to the stretching OH-groups and C=O bonds. The GO doped with ZnO nanoparticles exhibited good performances compared to both separete ones. The surface area, pore volume, pore diameter and adsorption capacity of the produced nanocomposite were 54.22 m2/g, 0.45 cm3/g, 32.09 nm and 0.54 mmol/g,respectively. For maximum adsorption efficiencies of Al+3 and Cu+2 (99% and 96%), GO/ZnO nanocomposite concentration, Ph, and temperature should be 40 mg/l, 6.00, and 25 oC, respectively. Cu concentrations are limited to 120 minutes and 400 mg/l. The adsorption was generated according to Langmuir adsorption isoterm and kinetic constants were relevant with second pseudo order reaction kinetic. The KL and qL for Al adsorption were 0.79 l/mg and 47 mg/mg while the same parameters were 0.70 l / mg and 44 mg/mg for Cu adsorption.