Evaluation of recalcitrant features impacting enzymatic saccharification of diverse agricultural residues treated by steam explosion and dilute acid

RSC Advances ◽  
2015 ◽  
Vol 5 (75) ◽  
pp. 60754-60762 ◽  
Author(s):  
Ruchi Gaur ◽  
Ruchi Agrawal ◽  
Rahul Kumar ◽  
E. Ramu ◽  
Veena Rani Bansal ◽  
...  
Keyword(s):  
Steam Explosion ◽  
Enzymatic Saccharification ◽  
Agricultural Residues ◽  
Biofuel Production ◽  
Dilute Acid ◽  
Agricultural Biomass

Exploring agricultural biomass for biofuel production necessitates pretreatment as a prerequisite step.

Comparison of ultrasound-assisted Fenton reaction and dilute acid-catalysed steam explosion pretreatment of corncobs: cellulose characteristics and enzymatic saccharification

RSC Advances ◽  
2016 ◽  
Vol 6 (80) ◽  
pp. 76848-76854 ◽  
Author(s):  
Sujun Wang ◽  
Xianhong Ouyang ◽  
Wenya Wang ◽  
Qipeng Yuan ◽  
Aixia Yan
Keyword(s):  
Steam Explosion ◽  
Fenton Reaction ◽  
Enzymatic Saccharification ◽  
Dilute Acid ◽  
Steam Explosion Pretreatment ◽  
Ultrasound Assisted

As an emerging method for lignocellulose pretreatment, the ultrasound-assisted Fenton reaction is not well developed in comparison to the dilute acid-catalysed steam explosion.

scholarly journals Evaluation of Mediterranean Agricultural Residues as a Potential Feedstock for the Production of Biogas via Anaerobic Fermentation

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Christos Nitsos ◽  
Leonidas Matsakas ◽  
Kostas Triantafyllidis ◽  
Ulrika Rova ◽  
Paul Christakopoulos
Keyword(s):  
Methane Production ◽  
Steam Explosion ◽  
Anaerobic Fermentation ◽  
Olive Tree ◽  
Agricultural Residues ◽  
Moderate Increase ◽  
Dilute Acid ◽  
Lignocellulosic Residues ◽  
Steam Explosion Pretreatment ◽  
Tree Pruning

Hydrothermal, dilute acid, and steam explosion pretreatment methods, were evaluated for their efficiency to improve the methane production yield of three Mediterranean agricultural lignocellulosic residues such as olive tree pruning, grapevine pruning, and almond shells. Hydrothermal and dilute acid pretreatments provided low to moderate increase in the digestibility of the biomass samples, whereas steam explosion enabled the highest methane yields to be achieved for almond shells at 232.2 ± 13.0 mL CH4/gVS and olive pruning at 315.4 ± 0.0 mL CH4/gVS. Introduction of an enzymatic prehydrolysis step moderately improved methane yields for hydrothermal and dilute acid pretreated samples but not for the steam exploded ones.

scholarly journals Diverse Banana Pseudostems and Rachis Are Distinctive for Edible Carbohydrates and Lignocellulose Saccharification towards High Bioethanol Production under Chemical and Liquid Hot Water Pretreatments

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3870
Author(s):  
Jingyang Li ◽  
Fei Liu ◽  
Hua Yu ◽  
Yuqi Li ◽  
Shiguang Zhou ◽  
...  
Keyword(s):  
Soluble Sugars ◽  
Enzymatic Saccharification ◽  
Hot Water ◽  
Biofuel Production ◽  
Bioenergy Crops ◽  
Bioethanol Production ◽  
Factors Affecting ◽  
Liquid Hot Water ◽  
Biomass Processing ◽  
Banana Crops

Banana is a major fruit crop throughout the world with abundant lignocellulose in the pseudostem and rachis residues for biofuel production. In this study, we collected a total of 11 pseudostems and rachis samples that were originally derived from different genetic types and ecological locations of banana crops and then examined largely varied edible carbohydrates (soluble sugars, starch) and lignocellulose compositions. By performing chemical (H2SO4, NaOH) and liquid hot water (LHW) pretreatments, we also found a remarkable variation in biomass enzymatic saccharification and bioethanol production among all banana samples examined. Consequently, this study identified a desirable banana (Refen1, subgroup Pisang Awak) crop containing large amounts of edible carbohydrates and completely digestible lignocellulose, which could be combined to achieve the highest bioethanol yields of 31–38% (% dry matter), compared with previously reported ones in other bioenergy crops. Chemical analysis further indicated that the cellulose CrI and lignin G-monomer should be two major recalcitrant factors affecting biomass enzymatic saccharification in banana pseudostems and rachis. Therefore, this study not only examined rich edible carbohydrates for food in the banana pseudostems but also detected digestible lignocellulose for bioethanol production in rachis tissue, providing a strategy applicable for genetic breeding and biomass processing in banana crops.

Effect of Steam Explosion Pretreatment on Size Reduction and Pellet Quality of Woody and Agricultural Biomass

2015 ◽  
pp. 27-53 ◽  
Author(s):  
Pak Sui Lam ◽  
Pak Yiu Lam ◽  
Shahab Sokhansanj ◽  
Xiaotao T. Bi ◽  
C. Jim Lim ◽  
...  
Keyword(s):  
Steam Explosion ◽  
Thermal Power ◽  
Chemical Conversion ◽  
Size Reduction ◽  
Pellet Quality ◽  
Agricultural Biomass ◽  
Steam Explosion Pretreatment ◽  
Research Findings ◽  
High Bulk

Steam explosion is a thermo-chemical pretreatment widely used to disrupt the ultra-structure of the cell wall of the ligno-cellulosic fiber to improve the fractionation of the major ligno-cellulosic components of the biomass for biochemical conversion. In recent years, steam explosion pretreatment has been applied on the fibers for improving the pellet quality of woody and agricultural biomass for thermo-chemical conversion. The improved qualities include high bulk density, low equilibrium moisture content, higher heating value, mechanical strength and moisture resistance. All of these desirable properties allow the steam exploded pellets to be handled and stored outdoors safely, similar to coal. This also raises lots of interests in considering pellets as preferable feedstock for the thermal power plant or bio-refinery facilities. In this chapter, the state of art of research findings on the effect of steam explosion on size reduction and pellet quality of woody and agriculture biomass will be discussed.

scholarly journals Comparison of dilute acid and ionic liquid pretreatment of switchgrass: Biomass recalcitrance, delignification and enzymatic saccharification

2010 ◽  
Vol 101 (13) ◽  
pp. 4900-4906 ◽  
Author(s):  
Chenlin Li ◽  
Bernhard Knierim ◽  
Chithra Manisseri ◽  
Rohit Arora ◽  
Henrik V. Scheller ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Enzymatic Saccharification ◽  
Dilute Acid ◽  
Biomass Recalcitrance ◽  
Ionic Liquid Pretreatment

PRODUCTION OF BIOFUEL FROM WASTE LIGNOCELLULOSIC BIOMASS MATERIALS BASED ON ENERGY SAVING VIEWPOINT

2012 ◽  
Vol 06 ◽  
pp. 715-720
Author(s):  
Maki Takano ◽  
Kazuhiro Hoshino
Keyword(s):  
Lignocellulosic Biomass ◽  
Rice Straw ◽  
Steam Explosion ◽  
Simultaneous Saccharification And Fermentation ◽  
Biofuel Production ◽  
Fermentable Sugars ◽  
Renewable Material ◽  
Suitable Combination ◽  
Biomass Materials ◽  
Simultaneous Saccharification

To develop biofuel production from waste lignocellulosic biomass materials the rice straw was selected one of renewable material and the degradation condition about pretreatment and enzymatic hydrolysis to obtain effectively fermentable sugars was investigated. Rice straw was pretreated by five kinds of methods and then the components ratio of rice straw was examined. First, the steam explosion was selected based on the degradability and the requirement energy. In addition, the best suitable combination of two cellulases to effective and economical hydrolyze was determined from the degradability of these pretreated rice straws. In the simultaneous saccharification and fermentation of the steam explosion rice straw by combining cellulase cocktail and a novel fermenting fungus, 13.2 g/L ethanol was able to product for 96 h.

Comparison of Dilute Acid and Sulfite Pretreatment for Enzymatic Saccharification of Earlywood and Latewood of Douglas fir

2013 ◽  
Vol 7 (1) ◽  
pp. 362-370 ◽  
Author(s):  
Chao Zhang ◽  
Xiaochun Lei ◽  
C. Tim Scott ◽  
J.Y. Zhu ◽  
Kecheng Li
Keyword(s):  
Enzymatic Saccharification ◽  
Douglas Fir ◽  
Dilute Acid
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