Table 3
Analytical parameters of the methyl biodiesel and comparisons (literature and standards).
| Analytical parameters/ Standards and methodologies used |
Data from this study | Rashid et al. (2008, 2011) | Oliveira et al. (2012) | Pereira et al. (2010)**** | Prados et al. (2012) | ANP (Res.45/2014) | EN (14214/2008) |
ASTM (D6751-07b) |
|---|---|---|---|---|---|---|---|---|
| Aspect | Clear, yellow and free from suspension particles | – | – | – | – | Clear and free from suspension particles | – | – |
| Specific mass (kg/m3 at 20 °C) (NBR 7148) |
869** | 875 | 887 | 882 | – | 850–900 | 860–900 | ns |
| Kinematic viscosity (mm2/s/40 °C) (NBR 10441) |
5.5 | 4.83 | 13.56 | 5.0 | – | 3.0–6.0 | 3.0–5.5 | 1.9–6.0 |
| Content of ester (%) (Standard EN 14103) |
86.2 98.23* |
– | 83.68 | 98 | 97.7 | Min. 96.5 | Min. 96.5 | ns |
| Acidity index (mg KOH/g) (NBR 14448) |
0.43 | 0.38 | 0.028 | 0.02 | – | Max. 0.50 | Max. 0.50 | Max. 0.50 |
| Water content (mg/kg) (ASTM D 6304) |
615.8 | 100 | 0*** | 480 | – | Max. 200 | Max. 500 | Max. 500 |
| Free glycerol (%) (Standard EN 14105) |
0.008* | – | – | – | 0.01 | Max. 0.02 | Max. 0.02 | Max. 0.02 |
| Monoacylglycerols (%) (Standard EN 14105) |
0.409* | – | – | – | 1.13 | Max. 0.7 | Max. 0.8 | ns |
| Diacylglycerols (%) (Standard EN 14105) |
0.00* | – | – | – | 0.07 | Max. 0.2 | Max. 0.2 | ns |
| Triacylglycerols (%) (Standard EN 14105) |
0.00* | – | – | – | 0.07 | Max. 0.2 | Max. 0.2 | ns |
* Obtained from biodiesel produced in micro-scale; ** densimeter method NBR 7148; *** measured as water and sediments and expressed in %; **** biodiesel produced by the hydroesterification process; ns: not specified. NBR: Brazilian Standards − Brazil (ABNT − Brazilian Association of Technical Standards); ASTM: American Standards − USA (American Society for Testing and Materials); EN: European Standards; ANP (National Agency of Petroleum, Natural Gas and Biofuel, Brazil).
Les statistiques affichées correspondent au cumul d'une part des vues des résumés de l'article et d'autre part des vues et téléchargements de l'article plein-texte (PDF, Full-HTML, ePub... selon les formats disponibles) sur la platefome Vision4Press.
Les statistiques sont disponibles avec un délai de 48 à 96 heures et sont mises à jour quotidiennement en semaine.
Le chargement des statistiques peut être long.