Journal of Chemistry / 2019 / Article / Tab 4 / Research Article
Physical and Chemical Properties of Biodiesel Obtained from Amazon Sailfin Catfish (Pterygoplichthys pardalis ) Biomass Oil Table 4 Comparison of the chemical composition of Amazon sailfin catfish biodiesel (ASC-B) with waste cooking oil (BWCO), marine fish oil (BMFO), and previous biodiesel production from catfish works.
Methyl ester profile (% wt.) Chemical structure ASC-B BWCO [46 ] BMFO [16 ] Previous studies using catfish Fu et al. [54 ] Thanh et al. [55 ] Maniam et al. [56 ] Myristate C14:0 4.488 0.54 6.6 3.43 — — Pentadecanoate C15:0 1.466 — — — — — Palmitate C16:0 24.679 14.18 21.6 27.89 — — Palmitoleate C16:1 9.059 0.74 8.0 1.67 — — Heptadecanoate C17:0 1.920 0.17 — — — — Heptadecanoate C17:1 0.978 — — — — — Stearate C18:0 10.844 3.77 4.1 8.38 — — Oleate C18:1 16.081 47.51 17.3 46.44 — — Linoleate C18:2 1.298 24.83 1.7 10.85 — — Linoleate C18:3 0.382 4.97 2.9 1.33 — — Vaccenate C19:1 5.366 — — — — — Arachidate C20:0 3.606 0.8 — — — — Eicosenoate C20:1 2.910 — 4.2 — — — Eicosadienoate C20:2 0.492 0.17 — — — — Eicosatetraenoate C20:4 3.934 0.38 — — — — Eicosapentaenoate C20:5 9.173 0.03 13.3 — — — Behenate C22:0 — 0.1 — — — — Docosenoate C22:1 — 0.18 3.8 — — — Docosadienoate C22:2 — — 1.7 — — — Docosatetraenoate C22:4 — 0.14 — — — — Docosapentaenoate C22:5 — 0.05 — — — — Docosahexaenoate C22:6 3.345 0.04 14.8 — — — Saturated 47.003 19.56 32.3 — — 39.7 Monounsaturated 34.394 48.43 33.3 — — 48.11 Polyunsaturated 18.624 30.61 34.4 — — 12.18 Density (15°C) (g·cm−3 ) 0.867 — — 0.883 0.887 and 0.873 0.8772 Acid value (mg·KOH g−1 ) 0.49 — — 0.09 0.3 0.12 Methanol (wt.%) 0.031 — — <0.01 — — Kinematic viscosity at 40°C (mm2 ·s−1 ) 3.58 — — — 3.4 and 3.2 4.53 Flash point (°C) 147 — — — 174 and 168 — Cloud point 3 — — — 10 — Water content (mg·kg−1 ) 0.867 — — — 300 and 200 — FAME content (wt.%) 0.49 — — 97.02 96.6 and 98.2 —
