Bio-ethanol – the fuel of tomorrow from the residues of today

Hahn‐Hägerdal, Bärbel; Galbe, Mats; Gorwa-Grauslund, Marie-Françoise; Lidén, Gunnar; Zacchi, Guido

doi:10.1016/j.tibtech.2006.10.004

Cited by 1,292 publications

(715 citation statements)

References 62 publications

Supporting

Mentioning

637

Contrasting

Unclassified

Order By: Relevance

“…Rice straw, wheat straw, corn straw and bagasse were considered the four major agrowastes feed-stocks for bioethanol production due to their availability throughout the year [5]. The conventional technique of producing bioethanol is by yeast fermentation of sugars under certain conditions or by hydrolysis of grain to glucose followed by yeast fermentation [6]. Other bio-resources such as apple pomaces [7] and mahula (MahucaLatifolia) flowers [8] have been also used.…”

Section: Introductionmentioning

confidence: 99%

Production of Bioethanol Fuel from Low-Grade-Date Extract

Sulieman¹,

Gaily²,

Zeinelabdeen³

et al. 2013

IJCEA

View full text Add to dashboard Cite

Abstract-Experiments on production of bioethanol through anaerobic fermentation of sugars extracted from low-quality dates using a wild strain of Saccharomyces cerevisiae were conducted at 30C and 33C. The effect of the pH during fermentation was insignificant at the operating temperatures.The average ethanol yield for all experiments was greater than 71% of its theoretical value. Experiments in a 1L volume fermentor at 30C and 120 rpm without controlling the pH during fermentation gave ethanol yields of 91.3%, 68.7% and 54.8 % for the 10, 15 and 20% initial sugar concentrations, respectively. The drop in ethanol yield for 20% sugars could be attributed to probable ethanol inhibition.

show abstract

Section: Introductionmentioning

confidence: 99%

Production of Bioethanol Fuel from Low-Grade-Date Extract

Sulieman¹,

Gaily²,

Zeinelabdeen³

et al. 2013

IJCEA

View full text Add to dashboard Cite

show abstract

“…8,9 In this context, the availability of biomass and specific biotechnological resources place the ethanol and biodiesel as the most promising fuels. [10][11][12] Current policies stimulate the development of these technologies. European countries are beginning to use the bioethanol/diesel and bioethanol/gasoline blends, as started by the directive 2003/2030 years.…”

Section: Introductionmentioning

confidence: 99%

Acid and enzymatic hydrolysis of the residue from Castor Bean (Ricinus communis L.) oil extraction for ethanol production: detoxification and biodiesel process integration

Melo¹,

Santos²,

Anna³

et al. 2008

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

O processo de hidrólise do amido da torta de mamona por ácido e pela combinação de a-amilase, glicoamilase e pululanase foi realizado, seguindo de etapa de fermentação. A hidrólise química resultou em 27.3 g L -1 de açúcares com 33.4% de eficiência de hidrólise. O hidrolisado obtido foi fermentado originando 11 g L -1 de etanol (Y P/S =0.48 g g -1 ). A melhor condição de hidrólise enzimática foi (por grama de torta de mamona): 200 µL de a-amilase, a 90 ºC; 200 µL de glicoamilase e 100 µL de pullulanase, ambas a 60 °C, que resultou em 75 g L -1 de açúcares redutores totais, que corresponde a 91.4% de eficiência de hidrólise. Esses açúcares em seguida foram convertidos em 34.5 g L -1 etanol. O processo de hidrólise ácida foi capaz de promover a destoxificação da torta de mamona.The starch hydrolysis process of Castor Bean Cake by (CBC) acid or enzymatic combination of alpha-amylase, glucoamylase and pullulanase was evaluated and followed by fermentation. The chemical hydrolysis resulted in 27.3 g L -1 of sugars with 33.4% of hydrolysis efficiency. The generated hydrolyzate was fermented yielding 11 g L -1 of ethanol (Y P/S =0.48 g g -1 ). The best enzymatic hydrolysis condition was as follows (per gram of CBC): 200 µL of a-amylase, at 90 ºC; 200 µL of glucoamylase and 100 µL of pullulanase, both at 60 °C, which yielded 75 g L -1 of total reducing sugars corresponding to 91.4 % of hydrolysis efficiency. These sugars were subsequently converted to 34.5 g L -1 of ethanol. The acid hydrolysis process was also capable to allow the detoxification of the Castor Bean Cake.

show abstract

“…The ethanol obtained in this way is known as bio-ethanol. Ethanol production from lignocellulose would open up the possibility for the utilization of diverse and low-cost biomass, such as agricultural wastes and forestry residues [10]. In this way, food could be produced along with bioethanol from agricultural sources.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Production by the Steam Reforming of Bio-Ethanol over Nickel-Based Catalysts for Fuel Cell Applications

Chen¹,

Xu²

2017

IJSGE

View full text Add to dashboard Cite

Abstract:The bio-ethanol steam reforming over nickel-based catalysts when the temperature is within the range of 700 to 800 K is studied for fuel cell applications. The effect of operating conditions such as the temperature, space time, water-to-ethanol molar ratio, and oxygen-to-ethanol molar ratio on the product distribution is evaluated. The water-gas shift reaction is examined in the reforming process. Adjusting feed ratios to favor carbon removal from the surface is discussed in detail. It is shown that a nickel-supported-on-alumina catalyst completely converts bio-ethanol and high hydrogen yields are obtained. High temperatures and water-to-ethanol ratios can promote hydrogen production. There is no evidence that the water-gas shift reaction occurs over nickel-based catalysts. Carbon formation can be minimized by using high water-to-ethanol ratios. The presence of oxygen in the feed plays a favorable effect on the carbon deposition, but the carbon monoxide production is not reduced. There are several reaction pathways that could occur in the bio-ethanol steam reforming process, and the catalyst produces ethylene and acetaldehyde as intermediate products. The region of carbon formation depends on the temperature as well as the water-to-ethanol and oxygen-to-ethanol molar ratios. Finally, an overall reaction scheme as a function of temperature is proposed. The best catalysts appear to be those that are sufficiently basic to inhibit the dehydration of ethanol to ethylene, which subsequently polymerizes and causes coke formation.

show abstract

Bio-ethanol – the fuel of tomorrow from the residues of today

Cited by 1,292 publications

References 62 publications

Production of Bioethanol Fuel from Low-Grade-Date Extract

Production of Bioethanol Fuel from Low-Grade-Date Extract

Acid and enzymatic hydrolysis of the residue from Castor Bean (Ricinus communis L.) oil extraction for ethanol production: detoxification and biodiesel process integration

Hydrogen Production by the Steam Reforming of Bio-Ethanol over Nickel-Based Catalysts for Fuel Cell Applications

Contact Info

Product

Resources

About