Dilute sulfuric acid pretreatment of sunflower stalks for sugar production

Ruiz, Encarnación; Romero, Inmaculada; Moya, Manuel; Cara, Cristóbal; Vidal, Juan D.

doi:10.1016/j.biortech.2013.04.104

Cited by 48 publications

(19 citation statements)

References 20 publications

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“…Experimental studies of dilute sulfuric acid pretreatment have been performed using wheat straw (Rajan and Carrier, 2014), rice straw (Hsu et al, 2010), sorghum bagasse (Dogaris et al, 2012), rapeseed straw (Choi et al, 2013), sugarcane bagasse (Chen et al, 2011), sunflower stalks (Ruiz et al, 2013), and switchgrass (Shi et al, 2011). Because pretreatment experiments are frequently time-consuming, labor-intensive, and environmentally unfavorable, some efforts have also been dedicated to modeling dilute sulfuric acid hydrolysis kinetics of lignocellulose substrate.…”

Section: Introductionmentioning

confidence: 99%

A novel diffusion–biphasic hydrolysis coupled kinetic model for dilute sulfuric acid pretreatment of corn stover

Chen

Zhang

et al. 2015

Bioresource Technology

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Section: Introductionmentioning

confidence: 99%

A novel diffusion–biphasic hydrolysis coupled kinetic model for dilute sulfuric acid pretreatment of corn stover

Chen

Zhang

et al. 2015

Bioresource Technology

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Section: Alkaline Pretreatmentmentioning

confidence: 99%

“…Acid pretreatment has been considered as a suitable technology for industrial-scale bioethanol production from glucose and hemicellulosic sugars (Ruiz et al 2013c). Different types of acids have been used in these pretreatments such as: phosphoric, sulfuric, and organic acid (oxalic, citric, tartaric and acetic) (Qin et al 2012;Avci et al 2013;Ruiz et al 2013c). Castro et al (2014) optimized the phosphoric acid pretreatment of Eucalyptus benthamii wood chips and produced bioethanol from this pretreated material with an ethanol yield of 240 g ethanol/kg Polysaccharides DOI 10.1007/978-3-319-03751-6_52-1 # Springer International Publishing Switzerland 2014 of raw material.…”

Section: Alkaline Pretreatmentmentioning

confidence: 99%

Cellulose from Lignocellulosic Waste

et al. 2014

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Bioconversion of renewable lignocellulosic biomass to biofuel and value-added products is globally gaining significant importance. Lignocellulosic wastes are the most promising feedstock considering its great availability and low cost. Biomass conversion process involves mainly two steps: hydrolysis of cellulose in the lignocellulosic biomass to produce reducing sugars and fermentation of the sugars to ethanol and other bioproducts. However, sugars necessary for fermentation are trapped inside the recalcitrant structure of the lignocellulose. Hence, pretreatment of lignocellulosic wastes is always necessary to alter and/or remove the surrounding matrix of lignin and hemicellulose in order to improve the hydrolysis of cellulose. These pretreatments cause physical and/or chemical changes in the plant biomass in order to achieve this result. Each pretreatment has a specific effect on the cellulose, hemicellulose, and lignin fraction. Thus, the pretreatment methods and conditions should be chosen according to the process configuration selected for the subsequent hydrolysis steps. In general, pretreatment methods can be classified into four categories, including physical, physicochemical, chemical, and biological pretreatment. This chapter addresses different pretreatment technologies envisaging enzymatic hydrolysis and microbial fermentation for cellulosic ethanol production and other bioproducts. It primarily covers the structure of lignocellulosic wastes; the characteristics of different pretreatment methods; enzymatic hydrolysis; fermentation and bioproducts; and future research challenges and trends.

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“…The most widely used acidic hydrolysis processes employ diluted sulfuric and hydrochloric acids (1-10 % v v −1 ), because they can effectively convert lignocellulosic materials into several saccharides (glucose, xylose, and arabinose), under low severity conditions (closed system, 1-h hydrolysis time, >160°C), with additional recovery of the lignin from the remaining solid fraction [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Building block itaconic acid from left-over biomass

Pedroso

Montipó

Mario

et al. 2016

Biomass Conv. Bioref.

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The use of rice husks for the sustainable production of the priority building block itaconic acid was studied under multivariate conditions. With the use of 3.4 % (v v −1 ) H 3 PO 4 , 145°C (48 bar), and 28-min hydrolysis time, 44.4 g sugar L −1 was produced with a yield of 266.4 mg sugar g −1 rice husks. Using 3.8 % (v v −1 ) HNO 3 , the best hydrolysis condition was 135°C (45 bar) and 35-min reaction time, when 42.0 g sugar L −1 was produced with a yield of 252.0 mg sugar g −1 rice husks. This is higher than the corresponding results of those obtained in the literature. The fermentation was conducted under optimized multivariate conditions, at 30°C, using phosphoric hydrolysate and an addition of 10 g L −1 yeast extract, pH 6.0 adjusted with CaO (s) and the use of Aspergillus terreus (ATCC 10020). Besides using no supplementation, the optimized experiment produced 1.9 g itaconic acid L −1 (yield of 49 mg g −1 sugar), similar results to that obtained with supplementation found in the literature for other kinds of lignocellulosic materials.

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Dilute sulfuric acid pretreatment of sunflower stalks for sugar production

Cited by 48 publications

References 20 publications

A novel diffusion–biphasic hydrolysis coupled kinetic model for dilute sulfuric acid pretreatment of corn stover

A novel diffusion–biphasic hydrolysis coupled kinetic model for dilute sulfuric acid pretreatment of corn stover

Cellulose from Lignocellulosic Waste

Building block itaconic acid from left-over biomass

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