English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

The effect of temperature and pressure on the batch hydrolysis of used cooking oil in fatty acids-\ud(autocatalytic system), dilute acid- (pH 5.0), and dilute Cu-catalyzed systems (500 mg CuSO4 per kg solution) was studied. The reaction was carried out using a fixed water/acylglycerides molar ratio of 30 : 1 under various temperatures (200–250C) and initial pressures (1.96–4.90 MPa) for 2 h. Experimental data were processed statistically using ANOVA and the Spearman correlation method aside of conventional data interpretation. The Cu-catalyzed system was superior to the other systems. Temperature had greater\udeffect on oil hydrolysis than initial pressure. The use of CO2 as the pressurizing gas altered fatty acid\udproduction and Cu soap formation particularly by oil dilution that also accompanied by a slight acidification of the aqueous phase. The water ionization constant was the most in fluencing property for fatty acid production and Cu soap formation

Effect of subcritical water on homogeneous catalysis of used cooking oil hydrolysis