Abstract:
:Waste lettuce leaves - from the "fresh cut vegetable" industry - were pretreated with the deep eutectic solvent (DES) made of choline chloride - glycerol. Reaction time (3-16h) and the operation temperature (80-150°C) were investigated. Enzymatic glucose and xylose yields of 94.9% and 75.0%, respectively were obtained when the biomass was pretreated at 150°C for 16h. Sugars contained in the biomass hydrolysate were fermented in batch cultures of Clostridium acetobutylicum DSMZ 792. The energy consumption and the energy efficiency related to the DES pretreatment were calculated and compared to the most common lignocellulosic pretreatment processes reported in the literature. The DES pretreatment process was characterized by lower energy required (about 28% decrease and 72% decrease) than the NAOH pretreatment and steam explosion process respectively. The Net Energy Ratio (NER) value related to butanol production via DES biomass pretreatment was assessed.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Procentese A,Raganati F,Olivieri G,Russo ME,Rehmann L,Marzocchella Adoi
10.1016/j.biortech.2017.06.143subject
Has Abstractpub_date
2017-11-01 00:00:00pages
464-473eissn
0960-8524issn
1873-2976pii
S0960-8524(17)31047-7journal_volume
243pub_type
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