Abstract
Metal adsorbent was prepared by co-graft polymerization of allylamine and methacrylic acid (or N-vinylacetamide) onto nonwoven fabrics made of polyethylene-coated polypropylene fiber using radiation induced graft polymerization method. Behavior of the resulting adsorbents in uptake of Au (III) was evaluated by both batch and columnar methods. In the column test, the breakthrough of Au (III) was evaluated with three different flow rates of 260, 520 and 1040 h-1 in space velocity (SV) by pumping 1mM Au (III) solution into the column at pH 3. Breakthrough points of three flow rates were 163, 150 and 144 bed volumes (BV), respectively. Furthermore, the breakthrough of Au (III) was evaluated at pH range from 1 to 7 by pumping 100 ppb Au (III) solution into the column in the SV of 4680 h-1. The breakthrough point was 175 BV at the pH 1 and 2, and went up to 179 BV at pH 3.
