In terms of oil yield from the two extraction methods, solvent extraction was vastly more successfully. For the test sample extractions as shown in Fig. 5, the samples with 15% absolute moisture content produced the highest oil yields, averaging approximately 54% (with respect to input dry mass). The difference was only between samples with an absolute moisture content of between 10% and 15%. However, the major barrier for solvent extraction process is the cost of solvent.
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