Figure 8From: Coating of magnetite with mercapto modified rice hull ash silica in a one-pot process Recovery of (a) u-Fe 3 O 4 , (b) Fe 3 O 4 -SiO 2 , (c) Fe 3 O 4 - SiO 2 -SH(75:25), (d) Fe 3 O 4 -SiO 2 -SH(50: 50), (e) Fe 3 O 4 -SiO 2 -SH(25:75) and (f) Fe 3 O 4 -SH by magnet after 10 times dispersion-recollection from various solvents. Back to article page