Improvement of methane production from P. canaliculata through mechanical pretreatment

Cristina Rodriguez, Abed Alaswad, Zaki El-Hassan, Abdul-Ghani Olabi

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Abstract

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.
Original languageEnglish
Pages (from-to)73-78
JournalRenewable Energy
Volume119
Early online date6 Dec 2017
DOIs
Publication statusPublished - 1 Apr 2018

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Keywords

  • renewable energy
  • biomass
  • biogas
  • algae
  • mechanical pretreatment
  • anaerobic digestion

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