Improvement of methane production from P. canaliculata through mechanical pretreatment. (April 2018)

• Record Type: Journal Article
• Authors: Rodriguez, C.; Alaswad, A.; El-Hassan, Z.; Olabi, A.G.
• Is Part Of: Renewable energy. Volume 119(2018)
• Page Start: 73
• Page End: 78
• Publication Date: 2018-04
• Subjects: Renewable energy -- Biomass -- Biogas -- Algae -- Mechanical pretreatment -- Anaerobic digestion; AD anaerobic digestion -- ANOVA analysis of variance -- BT beating time -- DT digestion time -- CCD central composite design -- F/I feedstock/inoculum -- KDP potassium dihydrogen phosphate -- MC moisture content -- NB no beating -- RSM response surface methodology -- TS total solids -- VFAs volatile fatty acids -- VS volatile solids; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.renene.2017.12.025
• Languages: English
• ISSNs: 0960-1481

Abstract

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. Highlights: Response surface methodology (RSM) with a Composite Central Design (CCD) was applied. The highest methane yields were achieved at feedstock/inoculum ratio 0.3. An optimized methane yield of 283 ml/gVS was achieved for 50 min pretreatment.