Ultrasonic vibration-assisted (UV-A) pelleting of wheat straw: a constitutive model for pellet density. Academic Article uri icon


  • Ultrasonic vibration-assisted (UV-A) pelleting can increase cellulosic biomass density and reduce biomass handling and transportation costs in cellulosic biofuel manufacturing. Effects of input variables on pellet density in UV-A pelleting have been studied experimentally. However, there are no reports on modeling of pellet density in UV-A pelleting. Furthermore, in the literature, most reported density models in other pelleting methods of biomass are empirical. This paper presents a constitutive model to predict pellet density in UV-A pelleting. With the predictive model, relations between input variables (ultrasonic power and pelleting pressure) and pellet density are predicted. The predicted relations are compared with those determined experimentally in the literature. Model predictions agree well with reported experimental results.

published proceedings

  • Ultrasonics

altmetric score

  • 0.5

author list (cited authors)

  • Song, X., Zhang, M., Pei, Z. J., & Wang, D.

citation count

  • 8

complete list of authors

  • Song, Xiaoxu||Zhang, Meng||Pei, ZJ||Wang, Donghai

publication date

  • January 2015