Synthesis And Characterization Of Bamboo Supported Zerovalent Iron For Chromium Adsorption

Chromium is an important industrial metal used in various production processes. Remediation ofrnChromium contaminated sites present both technological and economic challenges, asrnconventional methods are often too expensive and difficult to operate. Green synthesis providesrnadvancement over chemical and physical method as it is cost effective, environment friendly,rneasily scaled up for large scale synthesis. In this study, bamboo supported Zero-valent iron (Fe0)rnnanoparticles were synthesized, characterized, and were tested for adsorption of Cr (VI). Fe0rnnanoparticles were synthesized by the reduction of ferric chloride with avocado seed extractrnpolyphenol and were characterized by UV–Visible spectro- photometer, FTIR (Fourier transformrninfrared) spectroscopy and XRD (X-ray diffraction). Batch experiments were performed usingrnvarious concentrations of Fe0 nanoparticles for reduction of Cr (VI). The synthesized nZVIbamboornwas subsequently applied to the adsorption of hexavalent chromium from aqueousrnsolution. The adsorption of chromium was investigated under various experimental conditionsrnsuch as pH, initial concentration of chromium and adsorbent dosage. The results showed that thernsynthesized nZVI-AB adsorbent was able to perform the maximum adsorption capacity ofrn18.913 mg/g. and at a concentration of 20 mg/L, pH of 3 and 1 g of nZVI bamboo adsorbentrnconcentration which resulted in 92.38% and optimum removal percentage. The equilibrium datarnwas best represented by Langmuir isotherm.rnKeywords: Nanozerovalent iron, Green synthesis, polyphenol, FTIR and XRD.

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