Pretreatment of Lignocelollusic Biomass Based on Improving Enzymatic Hydrolysis

Madadi, Meysam; Tu, Yuanyuan; Abbas, Aqleem

doi:10.3126/ijasbt.v5i1.17018

Cited by 25 publications

(9 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Corn stover (stem, leaf, cob and straw) have large and irregular sizes, making the transformation process into fermentable sugars difficult. Accordingly, the biomass was fractioned into smaller and more uniform particles to increase its accessible surface area in order to improve the action of enzymes (Madadi et al, 2017). The results are expressed in Table 1, and the particles in the size range of 0.3 -0.6 mm were employed in the characterization experiments.…”

Section: Characterization Of the Biomassmentioning

confidence: 99%

Alkaline pretreatment and enzymatic hydrolysis of corn stover for bioethanol production

Bohn

Dresch

Cavali

et al. 2021

RSD

View full text Add to dashboard Cite

The demand for ethanol in Brazil is growing. However, although the country is one of the largest producers of this fuel, it is still necessary to diversify the production matrix. In that regard, studies with different raw materials are needed, mainly the use of low cost and high available wastes such as lignocellulosic residues from agriculture. Therefore, this study aimed to analyze the bioethanol production from corn stover. An alkaline pretreatment (CaO) was carried out, followed by enzymatic hydrolysis (Cellic Ctec2 and Cellic Htec2) to obtain fermentable sugars. The best experimental condition for the pretreatment and hydrolysis steps resulted in a solution with 0.31 gsugar∙gbiomass-1. Then, the fermentation was performed by the industrial strain of Saccharomyces cerevisiae (PE-2) and by the wild yeast strain Wickerhamomyces sp. (UFFS-CE-3.1.2). The yield obtained was 0.38 gethanol∙gdry biomass-1 was, demonstrating the potential of this process for bioethanol production.

show abstract

Section: Characterization Of the Biomassmentioning

confidence: 99%

Alkaline pretreatment and enzymatic hydrolysis of corn stover for bioethanol production

Bohn

Dresch

Cavali

et al. 2021

RSD

View full text Add to dashboard Cite

show abstract

“…T A B L E 1 Effect of different pretreatment methods on the physicochemical properties of lignocellulosic biomass and their advantages and disadvantages (Alvira et al, 2010;Brodeur et al, 2011;Haghighi Mood et al, 2013;P. Kumar et al,2009;Madadi, Tu, & Abbas, 2017 For applications to heterogeneous systems with complicated phase compositions composed of many components reacting during treatment, the term "mechanochemical treatment" is used.…”

Section: Principles Of the Mechanical And Mechanochemical Methods Amentioning

confidence: 99%

Current achievements in the mechanically pretreated conversion of plant biomass

Bychkov

Podgorbunskikh

Bychkova

et al. 2019

Biotech & Bioengineering

View full text Add to dashboard Cite

At present, “mechanochemistry” is synonymous with “grinding,” according to the views of a significant number of scientists and technologists. Often, one comes across the opinion that “the less the particle size, the better.” The cases of considering chemical reactions occurring during pretreatment, as well as considering changes in the ultrastructure of cell walls are extremely rare. Also, the wrong choice of the type of mechanical impact and the equipment used in most cases leads to excessive consumption of electrical energy and reduce economic efficiency. The review presents the currently available published data on mechanically activated processes for the pretreatment of plant materials and shows that when using mechanical treatment, it is necessary to look more closely at the phenomena occurring, rather than reducing everything to the production of fine and ultrafine powders. As a result of mechanical action, active surface radicals can form, hydrothermal chemical processes can occur, and mechanocomposites can form. The role of interphase processes, changes in surface chemistry, related dimensional effects, and the disordering of the crystal structure and amorphization should be taken into account. In addition, the physicochemical insights in mechanical pretreatment make it possible to more efficiently use the energy delivered to the material, and, consequently, increase the economic efficiency of the activation process.

show abstract

“…Autoclaving and hot water treatments are generally used as a physical treatment, causing thermolysis by solubilizing the hemicellulose and slightly removing lignin polymers from the biomass (He et al 2016). However, for proficient hemicellulose and lignin removal, the physical approaches are not considered an effective technology and also cause the release of various fermentation inhibitors (Madadi et al 2017). Chemical pretreatments are purely dependent on chemical utilization, which is an effective way to disrupt the lignocellulosic biomass structure.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of diverse pretreatment approaches to degrade lignin from Bambusa balcooa

Parveen

Tewari

Pradhan

et al. 2022

BioRes

View full text Add to dashboard Cite

Bamboo biomass is a potential source of monomeric sugars containing a high cellulose content with a low amount of lignin. However, for efficient hydrolysis, an effective biomass pretreatment technique is required to minimize the lignin content and other barrier components. In the present study, bamboo biomass was treated with different physical, chemical, biological, and combined treatments to reduce the lignin content. Among all the pretreatments, the maximum lignin removal amount (14.5%) was obtained with the combined chemical and biological treatment under 2% NaOH + 1% H2O2 + WDP2 fungal culture (5 plugs) conditions. In addition, the ligninolytic fungus and NaOH pretreatment was primarily effective in removing lignins, whereas the H2O2 pretreatment efficiently minimized cellulose crystallinity. Scanning electron microscopy and Fourier-transform infrared spectroscopy was utilized to analyze the structural changes of the raw and treated biomass. The structural analysis indicated that all the treatments caused disruption in the biomass structure and reduced the compactness of the biomass, which facilitated the biomass conversion during the hydrolysis process. The findings of the present study indicated effective pretreatment methods in overcoming the recalcitrancy of potential lignocellulosic biomass for maximum hydrolysis.

show abstract

Pretreatment of Lignocelollusic Biomass Based on Improving Enzymatic Hydrolysis

Cited by 25 publications

References 26 publications

Alkaline pretreatment and enzymatic hydrolysis of corn stover for bioethanol production

Alkaline pretreatment and enzymatic hydrolysis of corn stover for bioethanol production

Current achievements in the mechanically pretreated conversion of plant biomass

Comparative study of diverse pretreatment approaches to degrade lignin from Bambusa balcooa

Contact Info

Product

Resources

About