A roadmap for conversion of lignocellulosic biomass to chemicals and fuels

Wettstein, Stephanie G.; Alonso, David Martín; Gürbüz, Elif I.; Dumesic, James A.

doi:10.1016/j.coche.2012.04.002

Cited by 293 publications

(188 citation statements)

References 44 publications

Supporting

Mentioning

186

Contrasting

Unclassified

Order By: Relevance

“…v obliki aromatskih fragmentov, ki se uporabljajo kot ciljne kemikalije (vanilin) ali kot intermediati v kemijskih sintezah. Shema kemične pretvorbe lignocelulozne biomase je prikazana na sliki 2 (Wettstein et al, 2012, Maity, 2015. Figure 2 (Poljanšek et al, 2013).…”

Section: Lastnosti In Pomen Bukovine Kot Alternativne Surovine Characunclassified

Inovativna raba bukovine slabše kakovosti in ostankov

Zule¹,

Bučar²,

Kropivšek³

2017

les-wood

View full text Add to dashboard Cite

med predelavo, se zaradi visoke kurilnosti bukovine običajno namenjajo pridobivanju toplotne energije, torej v energetske namene. Na tržišču se pojavljajo v obliki drv, peletov in briketov, ki kot energenti ne dosegajo visoke dodane vrednosti. Iz surovine višje kakovosti je mogoče izdelati številne polizdelke in izdelke z visoko dodano vrednostjo, kar pa terja predvsem učinkovito delovanje gozdno-lesne verige in je podrobneje predstavljeno v prispevkih Kropivšek in Čufar (2015) ter Čufar et al. (2017) in je bilo temeljiteje preučevano v sklopu CRP projekta Racionalna raba lesa listavcev s poudarkom na bukovini. Poleg mehanskih in ostalih (tudi obdelovalnih) lastnosti pa lahko s pridom izkoriščamo tudi kemijsko strukturo bukovine za pridobivanje niza tržno zanimivih spojin (Zule, 2015). S tem se odpira široko področje inovativnih rab bukovine s poudarkom na celovitejši izrabi surovine slabše kakovosti in lesnih ostankov, ob hkratnem zagotavljanju načel krožnega gospodarstva (European Commission, 2017).

show abstract

Section: Lastnosti In Pomen Bukovine Kot Alternativne Surovine Characunclassified

Inovativna raba bukovine slabše kakovosti in ostankov

Zule¹,

Bučar²,

Kropivšek³

2017

les-wood

View full text Add to dashboard Cite

show abstract

“…We have beheld some remarkable and frankly positive advances over the last years with the exploitation of natural and renewable sources. Regarding the lignocellulosic residues, many compounds can be accessed from these sources [6,[8][9][10][11][12][13]. From fuels and value-added chemicals to substrates for the production of bioproducts through fermentation or even antioxidant additives, among many others [9], this process can become a new source of income for companies that are generating these wastes and decide to take the step needed and invest in biorefineries to valorize the wastes created from their production line.…”

Section: Short Communicationmentioning

confidence: 99%

Biomass Direct Liquefaction - Can This Process Become Fully Sustainable and Environmentally Friendly?

Mateus¹,

Santos²

2017

Ind Eng Manage

View full text Add to dashboard Cite

show abstract

“…The xylose released by hydrolysis of the hemicellulose fraction is typically more difficult to convert by fermentation than the glucose released by hydrolysis of cellulose (Wettstein et al, 2012). Escherichia coli is a bacterium able to carry out the co-fermentation of C5 and C6 sugars although without high ethanol production.…”

Section: Acid Pretreatmentmentioning

confidence: 99%

“…Nowadays, this residual biomass that remains in the fields after seed harvest, is poorly exploited (Wood et al, 2014) and it could be used as a feedstock for ethanol production by means of a biochemical process (Castro et al, 2011). The first step in the conversion of lignocellulosic biomass into fuels or chemicals typically involves a biomass pretreatment step (Wettstein et al, 2012). Acidic thermochemical treatments of lignocellulosic feedstocks are simple and low cost pretreatments with high efficiencies (Jönsson et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Hemicellulose-derived sugars solubilisation of rape straw. Cofermentation of pentoses and hexoses by Escherichia coli

López-Linares

Cara-Corpas

Ruiz

et al. 2015

Span. j. agric. res.

View full text Add to dashboard Cite

Bioconversion of hemicellulose sugars is essential for increasing fuel ethanol yields from lignocellulosic biomass. We report for the first time with rape straw, bioethanol production from hemicellulose sugars. Rape straw was pretreated at mild conditions with sulfuric acid to solubilize the hemicellulose fraction. This pretreatment allows obtaining a prehydrolysate, consisting basically in a solution of monomeric hemicellulosic sugars, with low inhibitor concentrations. The remaining water insoluble solid constitutes a cellulose-enriched, free of extractives material. The influence of temperature (120ºC and 130ºC), acid concentration (2-4% w/v) and pretreatment time (30-180 min) on hemicellulose-derived sugars solubilisation was evaluated. The highest hemicellulosic sugars recovery, 72.3%, was achieved at 130ºC with 2% sulfuric acid and 60 min. At these conditions, a concentrated sugars solution, 52.4 g/L, was obtained after three acid consecutive contacts, with 67% xylose and acetic acid concentration above 4.5 g/L. After a detoxification step by activated charcoal or ion-exchange resin, prehydrolysate was fermented by ethanologenic Escherichia coli. An alcoholic solution of 25 g/L and 86% of theoretical ethanol yield was attained after 144 h when the prehydrolysate was detoxified by ion-exchange resin. The results obtained in the present work show sulfuric acid pretreatment under mild conditions and E. coli as an interesting process to exploit hemicellulosic sugars in rape straw.Additional key words: agricultural residue; acid pretreatment; xylose; E. coli; bioethanol production

show abstract

A roadmap for conversion of lignocellulosic biomass to chemicals and fuels

Cited by 293 publications

References 44 publications

Inovativna raba bukovine slabše kakovosti in ostankov

Inovativna raba bukovine slabše kakovosti in ostankov

Biomass Direct Liquefaction - Can This Process Become Fully Sustainable and Environmentally Friendly?

Hemicellulose-derived sugars solubilisation of rape straw. Cofermentation of pentoses and hexoses by Escherichia coli

Contact Info

Product

Resources

About