Adsorption of Nickel and Chromium Ions by Amine-Functionalized Silica AerogelSudarat Sertsing, Thanaphat Chukeaw, Sitthiphong Pengpanich and Bawornpong PornchutiMATEC Web Conf., 156 (2018) 03014DOI: https://doi.org/10.1051/matecconf/201815603014