Abstract
Green chemistry using ficus leaf extract has become an ecological technique and was used for preparing zerovalent iron nanoparticles (nZVFe). The Ficus benjamina nano-zero-valent iron (FB-nZVFe) was characterised by scanning electron microscopy and Fourier transform infrared spectroscopy. The Orange G removal percentage (10 mg/l) reached 73% (0.3 g/l, 45 min and pH 4). The adsorption data agree more with the Langmuir model (R2= 0.9993), qmax= 27.66 mg/g. The kinetic results showed that Orange G uptake follows a pseudo-second-order model. Langmuir isotherm and pseudo-second-order kinetic studies are more appropriate in linear and non-linear models. In general, F. benjamina nZVFe is a promising green material for Orange G removal. The IBM SPSS Statistics software was used to investigate the effect of different operational parameters, they were found to account for more than 98% of the variables affecting the removal procedure.
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