Sökning: onr:"swepub:oai:DiVA.org:umu-100962" >
Combination of wate...
Combination of water extraction with dilute-sulphuric acid pretreatment for enhancing the enzymatic hydrolysis of jatropha curcas shells
-
- Martin, Carlos (författare)
- Umeå universitet,Kemiska institutionen
-
Garcia, Ariel (författare)
-
Schreiber, Andreas (författare)
-
visa fler...
-
Puls, Juergen (författare)
-
Saake, Bodo (författare)
-
visa färre...
-
(creator_code:org_t)
- Elsevier BV, 2015
- 2015
- Engelska.
-
Ingår i: Industrial crops and products (Print). - : Elsevier BV. - 0926-6690 .- 1872-633X. ; 64, s. 233-241
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Jatropha curcas shells were extracted with water in a pilot-scale reactor and then pretreated with dilute sulphuric acid. The pretreatment was initially investigated with a Box-Behnken experimental design in the range of 110-180 degrees C, 0.1-1.5% H2SO4 and 20-60 min, and then with complementary experiments at 190 degrees C. The glucan recovery was above 87% in all the experimental runs. Xylan solubilisation was 13-20% in the milder pretreatments and up to 45% in the most severe runs. Around 70% cellulose enzymatic conversion, evaluated with commercial cellulases during 72-h hydrolysis, was achieved for the pretreatments at 180 degrees C, and a region with maximal conversion was predicted for around 190 degrees C. For confirming that estimation, a 2(2)-experiment augmented by one central point and parallel pretreatments of pre-extracted and non-extracted shells were performed. The highest cellulose conversion, reached at the central point, was 16.5% higher for the pre-extracted and pretreated material than for the directly pretreated one. The low cellulose crystallinity index (0.79) of the pre-extracted and pretreated shells correlated well with their better enzymatic convertibility.
Nyckelord
- Jatropha curcas shells
- Dilute-acid pretreatment
- Water extraction
- Enzymatic hydrolysis
- gnocellulosic materials
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas