Gold Particles Recovery using Novel Reducing Agent with Regard to Continuous Approach

Abstract

Background: Over 300 tonnes of gold utilised in electronics devices every year, end-of-life electronic equipment offers an crucial recycling potential for secondary gold supply. Electronic boards are among common and exploitable sources of gold that are widely used in various industry. The aims of this paper is to use gold element of electronic boards by adjusting its surface functionality and particle size to make this metal to be used in various applications Methods: to gain this purpose by using acidic solutions and up to bottom chemical synthesis method among physical, chemical, and biological methods and by transferring gold particle size from micrometer to nanometer, surface-area-to-volume ratio will be increase such that new structural properties emerge, change, or improve. Results: Tests such as Fourier-Transform Infrared spectroscopy, X-Ray Diffraction, and Field Emission Scanning Electron Microscopy have confirmed high-quality production and proper extraction of gold particles on a nanometer scale from electronic plates and confirmed crystalline structure of extracted gold in range of 70-110 nm. Conclusion: The main objective of this research is to derive and fabricate gold nanoparticles using chemical oxidative route using HCl and Aqua regia to produce gold nanoparticles in Nano dimension scale. Results has shown that gold nanoparticles are synthesized successfully via chemical process. Moreover, Acid concentration and reaction time has enormous effect on production procedure.