Microalgae digestive pretreatment for increasing biogas production

RENEWABLE & SUSTAINABLE ENERGY REVIEWS

卷:82

Review

Cordova, Olivia¹  Santis, Julissa²  Ruiz-Fillipi, Gonzalo¹  Zuniga, Maria Elvira^1,4  Fermoso, Fernando G.³  Chamy, Rolando¹ 

[1] Pontificia Univ Catolica Valparaiso, Fac Ingn, Escuela Ingn Bioquim, Lab Biotecnol Ambiental, Av Brasil 2085, Valparaiso 2362803, Chile

[2] CONICYT R12C1001, CREAS, Av Univ 330, Valparaiso, Chile

[3] CSIC, Inst Grasa, Edificio 46,Campus Univ Pablo de Olavide, Seville 41013, Spain

[4] Pontificia Univ Catolica Valparaiso, Fac Ingn, Escuela Ingn Bioquim, Av Brasil 2085, Valparaiso, Chile

关键词: Anaerobic digestion;    Biogas;    Cell wall;    Enzymes;    Microalgae;    Pretreatment;   

DOI  :  10.1016/j.rser.2017.10.005

来源: Elsevier

【 摘 要 】

Microalgae have many advantages for the production of biogas by anaerobic digestion process. However, the anaerobic digestion process has been reported to be limited in the hydrolytic stage due to the specific characteristics of the cell wall components thus resulting in an inefficient conversion of biomass to biogas. Pretreatments aim to achieve an increase in the biogas production by increasing solubilization. Enzymatic pretreatment is described as an environmentally-friendly process, due to the low energy consumption, great yield of freed, fermentable sugars from the biomass under light operational conditions, the absence of corrosive problems, and few derivatives produced. Within the category of enzymatic pretreatments, it might identify two types, which are related to the origin of the enzymes and which may be classified as endogenous enzymes, and commercial exogenous enzymes. It should also be considered that enzyme production costs for commercial enzymes might be a negative factor in the process. The objective of the present review is to analyze and discuss the application of digestive pretreatments on the solubilization of microalgae, with a focus on the cell wall, and its relation to biogas production increase.

【 授权许可】

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