D. Quang, D. Quang, Jong Kil Kim
Jan 25, 2012
Citations
1
Influential Citations
25
Citations
Journal
Journal of Industrial and Engineering Chemistry
Abstract
Abstract In the present research, amino-functionalized silica materials were synthesized to develop absorbents for removing copper (II) ions from water. Three kinds of silica with various BET surface areas and pore volumes (331.4 m 2 /g, 460.1 m 2 /g, 717.7 m 2 /g and 1.38 cm 3 /g, 1.06 cm 3 /g, 0.57 cm 3 /g, respectively) were used to determine an optimum material. 3-Aminopropyltrimethoxysilane (3-APTMS) and N-[3-(trimethoxysilyl)propyl]-ethylenediamine (MSDA) are two amino-functional moieties grafted onto silica surfaces. A maximum copper absorption of 33.45 mg/g was confirmed using the amino-functionalized material at an initial 3-APTMS concentration of 2.52 mmol/g. Silica with a BET surface of 331 m 2 /g and a pore volume of 1.38 cm 3 /g demonstrated a good copper absorption capacity. Interference species such as pH, NH 3 and EDTA were also studied in this work.