HEAVY METAL REMOVAL FROM SYNTHETIC WASTE WATER BY USING ZERO VALENT IRON NANOPARTICLES
Abstract

Author(s): Shobha Mantripragada, Lifeng Zhang, Oscar Medel Enriquez, Kierah Risdon-Langdon, And Lei Zhang

Heavy metals ions such as Chromium (Cr (VI)), Nickel (Ni(II)), Copper(Cu(II)) are highly toxic. Various methods have been attempted to remove these heavy metals from water including filtration, chemic al precipitation, electrodeposition etc., but these methods suffer from disposal of metal residual sludge, membrane clogging, intensive energy consumption, and high cost. Zero Valent Iron nanoparticles (ZVINPs) possess high capacity for remediating heavy metal ions in water owing to their large surface area, high reactivity, non-toxicity, and ease of production. In this research, Zero Valent Iron nanoparticles were synthesized by liquid phase reduction method , and the remediation of multi heavy metal (in its solutions) in synthetic acidic waste water by using ZVINPs with different concentrations of the metal solution, sonication times, loadings of ZVINP’s and pH levels of the acidic water as constraints has been studied and investigated. The results show that Cr, Ni, and Cu ions could be removed effectively from waster water by using ZVINPs with sonication in a weak acidic (pH ~5.5) environment