A review on the role of pretreatment technologies in the hydrolysis of lignocellulosic biomass of corn stover

Khan, Muhammad Farooq Saleem; Akbar, Mona; Xu, Zhaoyi; Wang, Hui

doi:10.1016/j.biombioe.2021.106276

Cited by 68 publications

(16 citation statements)

References 100 publications

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“…Microwave pretreatment is rapid and shortens the reaction time due to the dual effects of temperature and molecular rotation. This method is suitable for increasing the surface area and improving the hydrolysis efficiency (Huang et al., 2016; Khan et al., 2021). The increase in temperature and pressure caused by the thermal effect disrupts lignin and cell wall components.…”

Section: Pretreatment Of Straw Resourcesmentioning

confidence: 99%

New strategy for the biosynthesis of alternative feed protein: Single‐cell protein production from straw‐based biomass

Zhang,

Chen,

Gao

2024

GCB Bioenergy

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With rapid growth of global population, meeting the increasing demand for food has become a significant challenge. This challenge is further compounded by limited arable land and the necessity to address the nutritional needs of both humans and animals. However, the utilization of straw biomass, which is readily available as an agricultural by‐product, presents a sustainable solution to this problem. Microbial fermentation has emerged as a highly effective method for converting non‐food biomass into protein, particularly known as single‐cell protein (SCP). Compared to traditional protein sources, SCP production through microbial fermentation is rapid and efficient, and requires minimal land resources. This review provides a comprehensive review of the research advancements in SCP from agricultural biomass, including pretreatment methods, microbial strains, and fermentation processes involved in the bioconversion of straw biomass. Due to the complexity of straw‐based biomass (SBB), it is essential to customize industrial strains and optimize the fermentation process to achieve the highest protein yield and productivity. Additionally, improving the compatibility between tailored processes and cost‐effective industrial strains can lead to the production of protein substitutes that are not only highly nutritious but also economically viable. Hence, the application of SCP derived from SBB presents a dual solution by reducing the need for managing agricultural residues and providing a sustainable source of protein. However, the production of SCP from SBB also has some limitations, such as protein‐synthesis efficiency, production cost, and difficulty to scale‐up the production process. In the future, there is great potential for significant advancements in the targeted conversion of SBB into protein by customizing high‐performance microbial strains. Several sensor and machine learning technologies will predict and monitor real‐time dynamic changes in the fermentation process of SBB, offering an opportunity to improve the production of sustainable SCP in an environmentally friendly and precise manner.

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Section: Pretreatment Of Straw Resourcesmentioning

confidence: 99%

New strategy for the biosynthesis of alternative feed protein: Single‐cell protein production from straw‐based biomass

Zhang,

Chen,

Gao

2024

GCB Bioenergy

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“…Lastly, for biological pretreatment methods, which often result in low yield and long reaction time, more efficient processes need to be developed. 17 Due to the lack of additional chemicals, hot liquid water and steam explosion pretreatment methods are potentially eco-efficient solutions. The hot liquid water pretreatment method implies treating biomass with hot liquid water at temperatures between 160 and 190°C in order to increase its digestibility.…”

Section: Introductionmentioning

confidence: 99%

“…A common problem with chemical pretreatment methods is the usage of additional chemicals, which might facilitate the pretreatment step but can significantly complicate the downstream processing. Lastly, for biological pretreatment methods, which often result in low yield and long reaction time, more efficient processes need to be developed 17 . Due to the lack of additional chemicals, hot liquid water and steam explosion pretreatment methods are potentially eco‐efficient solutions.…”

Section: Introductionmentioning

confidence: 99%

Turning waste into value: eco‐efficient recovery of by‐products from biomass pretreatment in lignocellulosic biorefineries

Janković,

Straathof,

Kiss

2023

Biofuels Bioprod Bioref

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This original research contributes to enhancing the viability of biorefineries through recovering valuable by‐products from the liquid remaining after the biomass pretreatment by hot liquid water. A novel downstream processing method is developed for the recovery of acetic acid, formic acid, furfural and 5‐hydroxymethylfurfural (HMF) by enhanced distillation. The major challenge in this research is the processing of the highly diluted initial solution (>96 wt% water) and the thermodynamic limitations owing to possible formation of several azeotropes. This new process recovers 78.7% of the acetic acid (99.8 wt%), while the rest of it is recycled back to the biomass pretreatment step together with most of the separated water from the initial solution. Over 99.5% of formic acid, furfural and HMF is also recovered, at purities of 74.7, 98.0 and 100 wt%, respectively. Vapor recompression and heat integration are implemented to decrease the energy use. The results demonstrate a 77.4% decrease in total annual costs (from $3.44 to 0.78/kgproduct), a 75.0% reduction in minimum average selling price (from $3.50 to 0.87/kgproduct), an 81.1% reduction in energy requirements (from 77.41 to 14.66 kWthh/kgproduct) and an up to 99.7% decrease in CO2 emissions (from 11.17 to 0.03 kgCO2/kgproduct).

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“…Various pretreatment methods have been tested for improving the enzymatic hydrolysis of corn stover [ 5 , 10 , 15 ]. It was reported that dilute acid pretreatment could effectively remove hemicellulose, thereby improving the accessibility of enzymes to cellulose and enhancing the enzymatic digestibility of corn stover [ 16 , 17 , 18 , 19 , 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Pretreatment Strategies to Enhance Enzymatic Hydrolysis and Cellulosic Ethanol Production for Biorefinery of Corn Stover

Sun

Zhao

et al. 2022

IJMS

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There is a rising interest in bioethanol production from lignocellulose such as corn stover to decrease the need for fossil fuels, but most research mainly focuses on how to improve ethanol yield and pays less attention to the biorefinery of corn stover. To realize the utilization of different components of corn stover in this study, different pretreatment strategies were used to fractionate corn stover while enhancing enzymatic digestibility and cellulosic ethanol production. It was found that the pretreatment process combining dilute acid (DA) and alkaline sodium sulfite (ASS) could effectively fractionate the three main components of corn stover, i.e., cellulose, hemicellulose, and lignin, that xylose recovery reached 93.0%, and that removal rate of lignin was 85.0%. After the joint pretreatment of DA and ASS, the conversion of cellulose at 72 h of enzymatic hydrolysis reached 85.4%, and ethanol concentration reached 48.5 g/L through fed-batch semi-simultaneous saccharification and fermentation (S-SSF) process when the final concentration of substrate was 18% (w/v). Pretreatment with ammonium sulfite resulted in 83.8% of lignin removal, and the conversion of cellulose and ethanol concentration reached 86.6% and 50 g/L after enzymatic hydrolysis of 72 h and fed-batch S-SSF, respectively. The results provided a reference for effectively separating hemicellulose and lignin from corn stover and producing cellulosic ethanol for the biorefinery of corn stover.

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A review on the role of pretreatment technologies in the hydrolysis of lignocellulosic biomass of corn stover

Cited by 68 publications

References 100 publications

New strategy for the biosynthesis of alternative feed protein: Single‐cell protein production from straw‐based biomass

New strategy for the biosynthesis of alternative feed protein: Single‐cell protein production from straw‐based biomass

Turning waste into value: eco‐efficient recovery of by‐products from biomass pretreatment in lignocellulosic biorefineries

Pretreatment Strategies to Enhance Enzymatic Hydrolysis and Cellulosic Ethanol Production for Biorefinery of Corn Stover

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