Production of ethanol from hemicellulose fraction of cocksfoot grass using pichia stipitis

Njoku, Stephen Ikechukwu; Iversen, Jens Asmus; Uellendahl, Hinrich; Ahring, Birgitte Kiær

doi:10.1186/2043-7129-1-13

Cited by 18 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Another yeast e.g. Pichia stipitis etc., is used for direct fermentation of pentoses into ethanol (McMillan 1993;Njoku et al 2013). The pentose sugarxylose, obtained by enzymatic hydrolysis, can be used as a feedstock for production of xylitol.…”

Section: Biomass Structure and Chemistrymentioning

confidence: 99%

Recent findings and the energetic potential of plant biomass as a renewable source of biofuels - A review

Ioelovich¹

2015

BioRes

View full text Add to dashboard Cite

Nowadays the main sources of energy are petroleum, coal, and natural gas. However, these fossil sources are not reproduced in nature; on a human timescale their reserves are exhausted permanently and run down. Considerable attention in recent years has been given to plant biomass, which in contrast to the fossil sources is continuously renewed in nature. In this critical review the use of non-edible plant biomass for production of various kinds of biofuels is considered. To generate energy, plant biomass either can be burned directly or it can be used after its conversion into carbonized solid fuel (e.g. biochar), liquid fuels (bioethanol, biodiesel, bio-oil), or gases (biogas). Among various biofuels, production of bioethanol has potential to be the most attractive if recent technological advances become implemented, such that the co-production of ethanol and valuable byproducts can be combined together with recycling of solid and liquid wastes. A comparative analysis of energetic potential of biomass and various kinds of biofuels revealed that the most efficient way to produce energy is by direct burning of the plant biomass in a pelletized form, while the burning of such amount of the solid, liquid, or gaseous biofuel, which can be obtained from the plant material, gives a much smaller energetic effect. Novel types of pellets, as well as solid/liquid biofuels, having improved fuel characteristics are described.

show abstract

Section: Biomass Structure and Chemistrymentioning

confidence: 99%

Recent findings and the energetic potential of plant biomass as a renewable source of biofuels - A review

Ioelovich¹

2015

BioRes

View full text Add to dashboard Cite

show abstract

“…(Njoku et al, 2013), la obtención de biocombustibles se plantea como una valorización de la hemicelulosa, aunque los mismos tratamientos podrían ser aplicados a la fracción celulósica. En la figura 2 se muestra un esquema del proceso considerado en este trabajo, cuyas partes principales se especifican a continuación:…”

Section: Obtención De Biocombustiblesunclassified

Transformación de biomasa en biocombustibles de segunda generación

Faba

Dı́az

Ordóñez

2014

MYB

View full text Add to dashboard Cite

El agotamiento de las materias primas no renovables, así como la creciente conciencia ambiental ha motivado la valorización de la biomasa para la producción de energía. Aunque los primeros esfuerzos se centraron en el desarrollo de los biocombustibles de primera generación -según la materia prima con que se producen-, la tendencia actual es hacia la investigación en los biocombustibles de segunda generación, que permiten la transformación de la biomasa lignocelulósica (obtenida a partir de residuos forestales o de cultivos, maderas de bajo precio o serrín) en energía. La transformación de la madera en biocombustibles puede llevarse a cabo por vías biológicas o químicas. Entre las rutas químicas, hay tres posibilidades principales: gasificación, pirólisis o hidrólisis. Este trabajo tiene como objetivo hacer una revisión de las posibilidades para obtener biocombustibles de segunda generación mediante procesos químicos hidrolíticos, que implica varios pasos: pretratamiento de la biomasa (que puede ser físico o químico), hidrólisis de la biomasa, deshidratación de los azúcares, condensación aldólica e hidrogenación/deshidratación completa para obtener los alcanos lineales (biodiesel).

show abstract

“…Physicochemical detoxification methods are carried out by lime treatment (Njoku et al, 2013;Martínez et al, 2000), activated charcoal Berson et al, 2005), evaporation (Palmqvist, & Hahn-Hagerdal, 2000), ion exchange resins (Cho et al, 2009) or nano-filtration (Sun, & Liu, 2010). The general disadvantage of known methods of physicochemical detoxification is their high cost and/or the formation of large amounts of waste, which increases the burden on the environment.…”

Section: Introductionmentioning

confidence: 99%

Biodetoxification of Lignocellulosic Hydrolysates by Specially Adapted Activated Sludge

Morozova¹

2017

European Proceedings of Social and Behavioural Sciences

View full text Add to dashboard Cite

Realization of an inexpensive and effective detoxification method of lignocellulosic hydrolysates is a prerequisite for reducing the cost of biofuels production. We suggest a cost-effective waste-free method of hydrolysates purification from acetone-butanol inhibitors, which is based on the use of specially adapted activated sludge. We conducted the detoxification of an enzymatic hydrolysate of miscanthus cellulose and an acid hydrolysate of spruce by specially adapted activated sludge of the urban wastewater treatment plants. As a result of purification of the spruce hydrolysate, the concentration of 5-HMF has decreased from 3.06 g/L to 0.0012 g/L, furfural -from 1.3 g/L to 0.0009 g/L. The concentrations of 5-HMF have reduced from 1.03 g/L to 0.0013 g/L and the concentrations of furfural have decreased from 0.71 g/L to 0.0008 g/L. We showed the effectiveness of the method by fermentation of the medium based on treated or untreated hydrolysate by Clostridium acetobutylicum ATCC 824. The obtained results can be valuable not only for the production of biobutanol, but in the technologies for bioethanol production.

show abstract

Production of ethanol from hemicellulose fraction of cocksfoot grass using pichia stipitis

Cited by 18 publications

References 27 publications

Recent findings and the energetic potential of plant biomass as a renewable source of biofuels - A review

Recent findings and the energetic potential of plant biomass as a renewable source of biofuels - A review

Transformación de biomasa en biocombustibles de segunda generación

Biodetoxification of Lignocellulosic Hydrolysates by Specially Adapted Activated Sludge

Contact Info

Product

Resources

About