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The efficiency of selective oil agglomeration to remove inorganic sulfur from coal can be increasd by the addition of boiled starch. Starch that was not boiled had a barely detectable effect. Measurements of the effect of n-octanol on the oil-water-solid contact angle on coal and on the n-decane-water interfacial tension, were also made.
The low-frequency dielectric dispersion of tolyl xylyl sulfone, pentachlorobiphenyl and hexachlorobiphenyl follow the Davidson-Cole equation for “skewed arc”: ε∗ = ε∞ + ε0 − ε∞/(1+i∞τ0)β (1) rather than the Cole-Cole equation for “semicircular arc with depressed center”. β lay in the range 0.50–0.65. This behavior (with β in the range 0.55–0.65) had previously been observed only for glycerol and propylene...
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