Open AccessRemoval of Precious Metals from Electronic-Waste by Using Composite Material
Author(s) -
Raghad Hamid Hilal
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/881/1/012089
Subject(s) - polyacrylic acid , bentonite , adsorption , composite number , materials science , polymerization , nuclear chemistry , sintering , chemical engineering , waste management , composite material , chemistry , organic chemistry , polymer , engineering
In this research, in-situ polymerization is used to prepare composite material at the same ratio of (polyacrylic acid to bentonite) and (10ml) aquaregia (1:3 HNO 3 : HCl), accurately about (5g) of the electronic waste (e-waste) powder is dissolved. Adsorption efficiency of (Polyacrylic acid - bentonite) composite to precious metals from neutral (e-waste) solution via forth flotation method, taking various weights (2.5, 5, 10 g.l −1 ) of adsorbent material (polyacrylic acid - bentonite) composite at different temperatures (25, 35 and 45) °C. Results show that adsorption efficiency of Au +1 is higher than Ag +1 from adsorbent material and the highest value is (53.238%, 43.3904%), (51.778%, 41.99%) and (51.278%, 39.595%) for (Au +1 , Ag +1 ) at (25, 35 and 45)°C respectively. But it is decreased slightly with increasing temperature.