Construction and demolition lignocellulosic wastes to bioethanol

Jafari, Vahid; Labafzadeh, Sara R.; Jeihanipour, Azam; Karimi, Keikhosro; Taherzadeh, Mohammad J.

doi:10.1016/j.renene.2011.04.028

Cited by 29 publications

(13 citation statements)

References 16 publications

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“…Sugarcane bagasse is constituted mainly of cellulose, which can be used to produce "second generation" ethanol (Jafari et al, 2011). Cellulose cannot be directly converted to ethanol and it must be processedfirst to glucose or other sugars, which can be fermented like traditional "first generation" ethanol.…”

Section: Introductionmentioning

confidence: 99%

Pretreatments and enzymatic hydrolysis of sugarcane bagasse aiming at the enhancement of the yield of glucose and xylose

Guilherme

Dantas

Soares

et al. 2017

Braz. J. Chem. Eng.

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This work studied the enzymatic hydrolysis of sugarcane bagasse aiming at the production of glucose and xylose. The bagasse was subjected to two different pretreatments: combined acid and alkalinepretreatment and hydrogen peroxidepretreatment. The enzymatic hydrolysis was optimized and a kinetic study was carried out in a stirred tank reactor (STR) in batch mode. Optimal conditions were obtained by subjecting the bagasse to the hydrogen peroxide pretreatment followed by enzymatic hydrolysis. The addition of xylanases to the enzymatic mixture improved the production of fermentable sugars by 48%.

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Section: Introductionmentioning

confidence: 99%

Pretreatments and enzymatic hydrolysis of sugarcane bagasse aiming at the enhancement of the yield of glucose and xylose

Guilherme

Dantas

Soares

et al. 2017

Braz. J. Chem. Eng.

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“…In effect, one would be forced to over-dose the system with cellulases and white-rot enzymes, etc., based on the recalcitrance of the least-digestible wood species having a chance to be dominant in a given batch. Jafari et al (2011) showed that a high yield of bioethanol would be obtained from reclaimed wood by treatment successively with concentrated phosphoric acid, N-methylmorpholine-N-oxide solvent, cellulases, and yeast. Though such studies show what is possible, it seems likely that the cost of obtaining ethanol from waste wood will remain cost-prohibitive in the foreseeable future.…”

Section: Strategy "One" -Find Uses That Tolerate Variability and Contmentioning

confidence: 99%

What Next for Wood Construction/Demolition Debris?

Hubbe¹

2014

BioRes

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Residents in localities throughout the world voluntarily participate in the routine recycling of household wastes, such as paper, metals, and plastics containers. But when a house in their neighborhood gets built or torn down, most of the debris -including wood waste -gets landfilled. Such a waste of material suggests that there are opportunities to add value to these under-utilized resources. The great variability, as well as contamination, pose major challenges.It is recommended that reclaimed wood be primarily used in the manufacture of durable goods, and then whatever is left over be used for energy (or heat) generation.

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“…The process of ethanol production from lignocellulosic materials includes steps of pretreatment, hydrolysis of cellulose and hemicellulose into monomeric sugars, fermentation of sugars to ethanol, and finally, distillation and purification of ethanol (Jafari et al, 2011). During the pretreatment, the biomass is subjected to a combination of physical, thermal or chemical actions, which have the purpose of making the plant cell walls more susceptible to the following steps (Dien et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Dilute Acid Hydrolysis of Sweet Sorghum Bagasse and Fermentability of the Hemicellulosic Hydrolysate

Camargo

Sydney

Leonel

et al. 2019

Braz. J. Chem. Eng.

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This study aimed to determine the best dilute acid hydrolysis condition for the hemicellulosic fraction of sweet sorghum bagasse for ethanol production by Scheffersomyces stipitis. The experiment followed a 2 3 factorial design with four central points, and had as variables: sulfuric acid concentration, temperature and hydrolysis time. Sorghum bagasse presented the following chemical composition: 24.77% of lignin, 31.28% of hemicellulose and 34.80% of cellulose. The hydrolysis that resulted in the highest sugars concentration (14.22 g/L of xylose and 2.42 g/L glucose) was 1.75% H 2 SO 4 , 121 ºC and 40 minutes. This same condition provided low concentrations of toxic compounds (1.34 g/L of acetic acid, 0.90 g/L of phenol; 124.54 mg/L of hydroxymethylfurfural (HMF) and 978 mg/L of furfural). The fermentation of the hemicellulose-derived sugars by S. stiptis resulted in 22 g/L of ethanol, Y P/S 0.40 g/g and Qp 0.34 g/L.h.

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Construction and demolition lignocellulosic wastes to bioethanol

Cited by 29 publications

References 16 publications

Pretreatments and enzymatic hydrolysis of sugarcane bagasse aiming at the enhancement of the yield of glucose and xylose

Pretreatments and enzymatic hydrolysis of sugarcane bagasse aiming at the enhancement of the yield of glucose and xylose

What Next for Wood Construction/Demolition Debris?

Dilute Acid Hydrolysis of Sweet Sorghum Bagasse and Fermentability of the Hemicellulosic Hydrolysate

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