Combustion kinetics of agricultural wastes

✍ Scribed by José M. Encinar; Fernando J. Beltrán; Antonio Ramiro; Juan F. González; Alvaro Bernalte

• Publisher: Wiley (John Wiley & Sons)
• Year: 1995
• Tongue: English
• Weight: 530 KB
• Volume: 64
• Category: Article
• ISSN: 0268-2575
• DOI: 10.1002/jctb.280640211

✦ Synopsis

The combustion of two agricultural residues, grape and olive bagasses, has been studied. The influence of oxygen partial pressure and gas flow rate have been analysed. The analysis of residual gases, mainly containing CO and CO,, shows that there are two successive stages or effects owing to the combustions of volatile compounds and solid. Oxygen partial pressure has a pronounced influence on the temperatures at which combustion effects are observed. In fact, both temperatures of combustion coincide when oxygen partial pressure is higher than 5 x lo4 Pa. For each run, curves of weight loss and differential weight loss have been followed. From a kinetic model proposed (first and nthreaction order, between 0.87 and 0.84, with respect to the solid and oxygen, respectively), the activation energy of combustion was found to be between 826 and 89.3 kJ mol-'.