Fig. 12.35 Water and oilsorption capacities (1/kg) of different sizes of the expanded perlite. (a)
Oil: water ¼ 1:1 (v/v), oil and water were completely mixed before adding perlite. (b) Oil:
water ¼ 1:1, water and perlite were added together initially (water saturated perlite), and then oil
was added to mixture. (c) Oil: water ¼ 1:1, at first, the perlite was saturated with oil, then water was
added to the mixture. (d) Oil: water ¼ 3:7, oil and water were completely mixed before adding
perlite. (e) Oil: water ¼ 7:3, oil and water were completely mixed before adding perlite. (Modified
after Roulia et al. 2003)
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Oil: water ¼ 1:1 (v/v), oil and water were completely mixed before adding perlite. (b) Oil:
water ¼ 1:1, water and perlite were added together initially (water saturated perlite), and then oil
was added to mixture. (c) Oil: water ¼ 1:1, at first, the perlite was saturated with oil, then water was
added to the mixture. (d) Oil: water ¼ 3:7, oil and water were completely mixed before adding
perlite. (e) Oil: water ¼ 7:3, oil and water were completely mixed before adding perlite. (Modified
after Roulia et al. 2003)
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M. Fatehi et al.