Abstract：
:To enhance the anaerobic digestion of Chlorella vulgaris, thermochemical pretreatments were conducted. All pretreatments markedly improved solubilisation of carbohydrates. Thermal treatments and thermal treatments combined with alkali resulted in 5-fold increase of soluble carbohydrates while thermal treatment with acid addition enhanced by 7-fold. On the other hand, proteins were only solubilized with thermo-alkaline conditions applied. Likewise, all the pretreatments tested improved methane production. Highest anaerobic digestion was accomplished by thermal treatment at 120°C for 40 min without any chemical addition. As a matter of fact, hydrolysis constant rate was doubled under this condition. According to the energetic analysis, energy input was higher than the extra energy gain at the solid concentration employed. Nevertheless, higher biomass organic load pretreatment may be an option to achieve positive energetic balances.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Mendez L,Mahdy A,Timmers RA,Ballesteros M,González-Fernández Cdoi
10.1016/j.biortech.2013.08.136subject
Has Abstractpub_date
2013-12-01 00:00:00pages
136-41eissn
0960-8524issn
1873-2976pii
S0960-8524(13)01387-4journal_volume
149pub_type
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