Abstract
This study focused on synthesising nano-scale zero valent iron (NZVI) impregnated on a low-cost agro-waste material, rubber seed shell (RSS), by borohydride reduction method. The characterisation studies of NZVI-RSS were performed by Fourier transform infrared spectroscopy, scanning electron microscopy and X-ray diffraction. The adsorption execution of NZVI-RSS for Cu(II) ions evacuation from synthetic wastewater was explored by batch studies. The optimum condition for the present adsorption system is as follows: Cu(II) ion concentration = 25 mg/l; solution pH = 6.0; contact time = 30 min; NZVI-RSS dose = 3 g/l; temperature = 30°C. The sorption data were best portrayed by pseudo-first-order and Freundlich models. The outcomes demonstrated the multilayer sorption of Cu(II) ions by NZVI-RSS. The Langmuir capacity was observed as 48.18 mg/g. Thermodynamic parameters, ΔG°, ΔH° and ΔS° were ascertained, and it was watched that the adsorption system was unconstrained and exothermic. The sticking probability for Cu(II) ions by NZVI-RSS was found to be high at lower temperature. At long last, the research inquire about reasoned that NZVI-RSS has demonstrated unrivalled adsorption capacity. Also NZVI-RSS is thought to be really green and financially amicable support for wastewater treatment.
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