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Experiments were conducted to evaluate the efficiency of immobilized flaxseed gum gel beads for oil removal from oily wastewater. The adsorption capacities achieved the highest level 0.55 g g 21 (oil/beads) under the following conditions: flaxseed gum content in beads 30 mg g 21 , 20 uC, particle diameter of beads 2.0 mm and pH 7.5. Static adsorption kinetics showed that a pseudofirst-order rate equation described the experimental data most accurately (R 2 ¢ 0.9112). Principal component analysis (PCA) showed that there are two main aspects influencing the adsorption capacities and describing 99.1% of the total variances. The results showed that immobilized flaxseed gum beads have better adsorption capacities than active carbon. This study provides valuable data for a new environmentally-friendly material for the oil removal from wastewater.

A new packing material is studied in preparative or semi-preparative liquid chromatography with high separation efficiency and quality.