Particle Size (µm)

Mass of Sorbent before sorption (g)

Mass of Sorbent after sorption (g)

Mass of Sorbent after squeezing (g)

Oil sorption (g)

% Swelling

% Retention

1000

0.1

0.625

0.506

0.119

525

406

562

0.1

0.580

0.312

0.268

480

212

250

0.1

0.548

0.397

0.151

448

297

125

0.1

0.123

0.079

0.044

23

−21