A stepwise pretreatment of sugarcane bagasse by alkaline and hydroxymethyl reagent for bioethanol production

Jin, Yan; Shi, Zhengjun; Xu, Guogang; Yang, Haiyan; Yang, Jing

doi:10.1016/j.indcrop.2020.112136

Cited by 32 publications

(11 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The peak belonging to CO of unconjugated ketone, carbonyl, and ester groups in hemicellulose and lignin shifted from 1738 cm –1 for raw cypress and PS to 1730 cm –1 for raw SCB and disappeared after acid or alkaline pretreatment, which corresponded to the hemicellulose degradation during acid pretreatment and lignin removal in the alkaline pretreatment process (Table ). The same phenomenon was also observed for acid-treated or alkali-treated SCB in other research studies. , As for acid-treated samples, the peaks at 1092, 1123, 1204, and 1695 cm –1 appeared solely in SCB and those at 816, 858, 1711, and 1722 cm –1 were found only in cypress (Figure b). The peaks at 1227, 1269, 1425, and 1454 cm –1 for acid-treated cypress and PS were sharper than those for acid-treated SCB.…”

Section: Resultssupporting

confidence: 86%

“…The same phenomenon was also observed for acid-treated or alkali-treated SCB in other research studies. 34,36 As for acid-treated samples, the peaks at 1092, 1123, 1204, and 1695 cm −1 appeared solely in SCB and those at 816, 858, 1711, and 1722 cm −1 were found only in cypress (Figure 1b). The peaks at 1227, 1269, 1425, and 1454 cm −1 for acid-treated cypress and PS were sharper than those for acidtreated SCB.…”

Section: Effect Of Acid and Alkaline Pretreatment Onmentioning

confidence: 82%

“…Raw SCB and cypress had similar spectrogram patterns as those reported in the literature. 34,35 Compared with the raw materials, some peaks disappeared and some new peaks appeared after pretreatment (Figure S1). The most divergent peaks of raw and treated SCB, cypress, and PS from 800 to 1900 cm −1 are presented in Figure 1, and the peak assignment is shown in Table S1.…”

Section: Effect Of Acid and Alkaline Pretreatment Onmentioning

confidence: 99%

See 2 more Smart Citations

Effect of a Nonionic Surfactant on Enzymatic Hydrolysis of Lignocellulose Based on Lignocellulosic Features and Enzyme Adsorption

Wang

Zahoor

et al. 2020

ACS Omega

View full text Add to dashboard Cite

Reduction in the adsorption of cellulase onto lignin has been thought to be the common reason for the improvement of enzymatic hydrolysis of lignocellulose (EHLC) by a nonionic surfactant (NIS). Few research studies have focused on the relationship between lignocellulosic features and NIS for improving EHLC. This study investigated the impact of Tween20 on the enzymatic hydrolysis and enzyme adsorption of acid-treated and alkali-treated sugarcane bagasse (SCB), cypress, and Pterocarpus soyauxii (PS) with and without being ground. After addition of Tween20, the adsorption of cellulase onto unground and ground alkali-treated SCB increased, and the unground acid-treated SCB exhibited little change in adsorption cellulase, while other unground and ground, treated samples showed decreased cellulase adsorption. Tween20 could improve the enzymatic hydrolysis of acid-treated SCB, while it had little influence on the enzymatic hydrolysis of other treated materials. After being ground, both cellulase adsorption and enzymatic hydrolysis of treated lignocelluloses increased, and Tween20 could enhance the enzymatic hydrolysis of acid-treated materials while hardly affected the enzymatic hydrolysis of alkali-treated materials. This indicated that the promotion effect of Tween20 on enzymatic hydrolysis of treated lignocellulose could not be mainly ascribed to the hindrance of Tween20 to cellulase adsorption on lignin but was related to the lignocellulosic features such as hemicellulose removal and surface morphology changes.

show abstract

Section: Resultssupporting

confidence: 86%

Section: Effect Of Acid and Alkaline Pretreatment Onmentioning

confidence: 82%

Section: Effect Of Acid and Alkaline Pretreatment Onmentioning

confidence: 99%

See 1 more Smart Citation

Effect of a Nonionic Surfactant on Enzymatic Hydrolysis of Lignocellulose Based on Lignocellulosic Features and Enzyme Adsorption

Wang

Zahoor

et al. 2020

ACS Omega

View full text Add to dashboard Cite

show abstract

“…The use of Na2O2 and MgSO4 provides a significant delignification value as well as NaOH [18]. The use of NaOH and formaldehyde provides a delignification value from 45.03 to 47.29% [12].…”

Section: Alkaline Pretreatmentmentioning

confidence: 99%

A review of sugarcane bagasse pretreatment for bioethanol production

Nasution

Lelinasari

Kelana

2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Bioethanol is a new and renewable energy source. The second-generation bioethanol production process from lignocellulosic materials has development opportunities. This is because the first generation of bioethanol raw materials is generally a food source. Diversification of raw materials for the bioethanol production process can be developed through the use of non-food or waste sources. The process of developing bioethanol from local non-food resources or waste can increase energy security and the added value of these sources. One of the potential sources is sugarcane bagasse. The production process of bioethanol from sugarcane bagasse consists of: (i) pretreatment; (ii) enzymatic hydrolysis; (iii) fermentation; (iv) distillation; and (v) dehydration. The major composition of sugarcane bagasse consists of cellulose, hemicellulose, and lignin. Sugarcane bagasse requires a pretreatment process to separate lignin and hemicellulose from cellulose, reduce the crystallinity of cellulose and facilitate the hydrolysis of cellulose. This review focuses on sugarcane bagasse pretreatment for bioethanol production. There are several types of pretreatment processes, including (i) physical pretreatment; (ii) acid pretreatment; (iii) alkaline pretreatment; (iv) organosolv pretreatment; (v) steam explosion; and (vi) wet oxidation. Physical pretreatment is the process of physically changing the size of the sugarcane bagasse to be smaller. Chemical pretreatment is the separation process of lignin and hemicellulose from cellulose using acid compounds. Alkaline pretreatment is the separation process of lignin and hemicellulose from cellulose using alkali compounds. Organosolv pretreatment is lignocellulosic pretreatment using organic solvents. Steam explosion is the process of disrupting the complicated structure of sugarcane bagasse using steam. Wet oxidation is the process of biomass treatment with water, oxygen, or air. Steam explosion is superior to other processes in terms of hemicellulose solubilization, reaction time and no toxic substances.

show abstract

“…After that, the material went through a tangential flow filtration process (concentration followed by a diafiltration) to remove impurities such as copper, lactose, culture media, and enzymes, finishing in a freeze-drying procedure to produce a powder rich in cellopentaose (>80% purity). The ~6% conversion yield of sugarcane straw into sugars obtained by this group at bench-scale is lower than the average conversion yield for biomass into sugars found in the literature; 10,[26][27][28] we therefore also analyzed the proposed scenarios (scaled-up) with a 10% conversion yield as the hydrolysis could still be optimized.…”

Section: Cello-oligosaccharides Production Sectionmentioning

confidence: 99%

Production of cello‐oligosaccharides through the biorefinery concept: A technical‐economic and life‐cycle assessment

Barbosa

Nogueira

Kendrick

et al. 2021

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

Producers look for co-products to increase the value chain and production flexibility. With a high market aggregate value, the production of cello-oligosaccharides (COS) as functional oligosaccharides from cellulosic substrates has been investigated. As COS/cellopentaose production process are rarely described in the literature, this study estimated the cellopentaose production cost and performed a lifecycle assessment of the cellopentaose production process previously developed using sugarcane straw as a substrate. The results demonstrated that, through the six scenarios studied, it was possible to obtain a cellopentaose unit production cost varying between USD 0.40 and 1.15/mg, and that optimization in the upstream sector can reduce the total plant direct cost and the overall life-cycle impact. The results also

show abstract

A stepwise pretreatment of sugarcane bagasse by alkaline and hydroxymethyl reagent for bioethanol production

Cited by 32 publications

References 37 publications

Effect of a Nonionic Surfactant on Enzymatic Hydrolysis of Lignocellulose Based on Lignocellulosic Features and Enzyme Adsorption

Effect of a Nonionic Surfactant on Enzymatic Hydrolysis of Lignocellulose Based on Lignocellulosic Features and Enzyme Adsorption

A review of sugarcane bagasse pretreatment for bioethanol production

Production of cello‐oligosaccharides through the biorefinery concept: A technical‐economic and life‐cycle assessment

Contact Info

Product

Resources

About