In order to increase the methane yield from biomass, this paper investigates the mechanical pretreatment effect of a Hollander beater on the anaerobic digestion process of Pelvetia canaliculata macroalgae using a response surface methodology (RSM). Higher values on methane yield were obtained at lower F/I ratios, with an increase up to 2.5-fold at an F/I value of 0.3. A multi-objective optimization study was carried out with the aim of maximizing the methane yield while minimizing the pretreatment time. An optimum methane yield of 283 ml/gVS was obtained for 50 min pretreatment time and a ratio F/I of 0.3, which represents an increase of 45% compared to non-pretreated algae.
- renewable energy
- mechanical pretreatment
- anaerobic digestion
Rodriguez, C., Alaswad, A., El-Hassan, Z., & Olabi, A-G. (2018). Improvement of methane production from P. canaliculata through mechanical pretreatment. Renewable Energy, 119, 73-78. https://doi.org/10.1016/j.renene.2017.12.025