Ultrasonic-assisted ionic liquid treatment of chemithermomechanical pulp fibers

Chen, Jiachuan; Jiang, Qimeng; Yang, Guihua; Wang, Qiang; Fatehi, Pedram

doi:10.1007/s10570-016-1180-y

Cited by 14 publications

(5 citation statements)

References 40 publications

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“…Therefore, the use of ultrasonication shortens treatment time significantly and achieves optimal results. Moreover, Chen et al 54 indicated that a combination of US and [Amim][Cl] pretreatment resulted in enhancement of the effectiveness of pretreated pulp fibers with regard to increasing the glucan content and decreasing the hemicellulose and lignin levels. It was also reported that 190 min was required for cellulose to completely dissolve in [C 4 mim][Cl], whereas the total time was reduced to 60 min by applying ultrasound irradiation for 20 min 55 .…”

Section: Resultsmentioning

confidence: 99%

Investigation of a robust pretreatment technique based on ultrasound-assisted, cost-effective ionic liquid for enhancing saccharification and bioethanol production from wheat straw

Ziaei-Rad

Pazouki

Fooladi

et al. 2023

Sci Rep

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Application of cost-effective pretreatment of wheat straw is an important stage for massive bioethanol production. A new approach is aimed to enhance the pretreatment of wheat straw by using low-cost ionic liquid [TEA][HSO4] coupled with ultrasound irradiation. The pretreatment was conducted both at room temperature and at 130 °C with a high biomass loading rate of 20% and 20% wt water assisted by ultrasound at 100 W-24 kHz for 15 and 30 min. Wheat straw pretreated at 130 °C for 15 and 30 min had high delignification rates of 67.8% and 74.9%, respectively, and hemicellulose removal rates of 47.0% and 52.2%. Moreover, this pretreatment resulted in producing total reducing sugars of 24.5 and 32.1 mg/mL in enzymatic saccharification, respectively, which corresponds to saccharification yields of 67.7% and 79.8% with commercial cellulase enzyme CelluMax for 72 h. The ethanol generation rates of 38.9 and 42.0 g/L were attained for pretreated samples for 15 and 30 min, equivalent to the yields of 76.1% and 82.2% of the maximum theoretical yield following 48 h of fermentation. This demonstration provided a cheap and promising pretreatment technology in terms of efficiency and shortening the pretreatment time based on applying low-cost ionic liquid and efficient ultrasound pretreatment techniques, which facilitated the feasibility of this approach and could further develop the future of biorefinery.

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Section: Resultsmentioning

confidence: 99%

Investigation of a robust pretreatment technique based on ultrasound-assisted, cost-effective ionic liquid for enhancing saccharification and bioethanol production from wheat straw

Ziaei-Rad

Pazouki

Fooladi

et al. 2023

Sci Rep

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“…Other process parameters such as stirring speed, solid/liquid ratio, wood and cellulose particle and molecular size [60,95,96], the use of microwave heating [97,98], and ultrasonication [99] are also important and have been thoroughly explored in the literature. It has also been observed that wood dissolution is affected by environmental conditions.…”

Section: Impact Of Dissolution Conditionsmentioning

confidence: 99%

A Review on the Partial and Complete Dissolution and Fractionation of Wood and Lignocelluloses Using Imidazolium Ionic Liquids

Abushammala

Mao

2020

Polymers

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Ionic liquids have shown great potential in the last two decades as solvents, catalysts, reaction media, additives, lubricants, and in many applications such as electrochemical systems, hydrometallurgy, chromatography, CO2 capture, etc. As solvents, the unlimited combinations of cations and anions have given ionic liquids a remarkably wide range of solvation power covering a variety of organic and inorganic materials. Ionic liquids are also considered “green” solvents due to their negligible vapor pressure, which means no emission of volatile organic compounds. Due to these interesting properties, ionic liquids have been explored as promising solvents for the dissolution and fractionation of wood and cellulose for biofuel production, pulping, extraction of nanocellulose, and for processing all-wood and all-cellulose composites. This review describes, at first, the potential of ionic liquids and the impact of the cation/anion combination on their physiochemical properties and on their solvation power and selectivity to wood polymers. It also elaborates on how the dissolution conditions influence these parameters. It then discusses the different approaches, which are followed for the homogeneous and heterogeneous dissolution and fractionation of wood and cellulose using ionic liquids and categorize them based on the target application. It finally highlights the challenges of using ionic liquids for wood and cellulose dissolution and processing, including side reactions, viscosity, recyclability, and price.

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“…One main improvement that has benefited both S&F and DPP is the use of several ionic liquid (IL) solvents that function to improve dissolution and the separation properties of the lignocellulosic biomass (Roselli et al, 2014; Chen J. et al, 2017). Pulps produced using IL solvents display improved digestion by xylanases which results in higher cellulose quality by reducing residual xylan contamination (Roselli et al, 2014), while enzyme cocktails repertoires for S&F have expanded to contain CWDE which are thermally stable, inhibitor insensitive and multifunctional (Bibi et al, 2014; Nordwald et al, 2014; Shahid et al, 2017); (Table 1).…”

Section: Biorefinery Associated Industrial Processesmentioning

confidence: 99%

“…Product value in these industries is driven by high product quality and purity, but the physical properties of the SCW biopolymers themselves impede the efficiency of deconstructing the biomass (Gübitz et al, 1998; Himmel et al, 2007; DeMartini et al, 2013; McCann and Carpita, 2015). However, several improvements have been made to woody fiber biomass processing techniques themselves which have resulted in more efficient biomass separation and higher yields (Bibi et al, 2014; Nordwald et al, 2014; Roselli et al, 2014; Chen J. et al, 2017; Shahid et al, 2017). If biomass crops which have been bred or genetically engineered for favorable processing traits were used as well, even higher yields coupled with reductions in processing costs could be achieved (Marriott et al, 2016; Zhou et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Xylan in the Middle: Understanding Xylan Biosynthesis and Its Metabolic Dependencies Toward Improving Wood Fiber for Industrial Processing

et al. 2019

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Lignocellulosic biomass, encompassing cellulose, lignin and hemicellulose in plant secondary cell walls (SCWs), is the most abundant source of renewable materials on earth. Currently, fast-growing woody dicots such as Eucalyptus and Populus trees are major lignocellulosic (wood fiber) feedstocks for bioproducts such as pulp, paper, cellulose, textiles, bioplastics and other biomaterials. Processing wood for these products entails separating the biomass into its three main components as efficiently as possible without compromising yield. Glucuronoxylan (xylan), the main hemicellulose present in the SCWs of hardwood trees carries chemical modifications that are associated with SCW composition and ultrastructure, and affect the recalcitrance of woody biomass to industrial processing. In this review we highlight the importance of xylan properties for industrial wood fiber processing and how gaining a greater understanding of xylan biosynthesis, specifically xylan modification, could yield novel biotechnology approaches to reduce recalcitrance or introduce novel processing traits. Altering xylan modification patterns has recently become a focus of plant SCW studies due to early findings that altered modification patterns can yield beneficial biomass processing traits. Additionally, it has been noted that plants with altered xylan composition display metabolic differences linked to changes in precursor usage. We explore the possibility of using systems biology and systems genetics approaches to gain insight into the coordination of SCW formation with other interdependent biological processes. Acetyl-CoA, s-adenosylmethionine and nucleotide sugars are precursors needed for xylan modification, however, the pathways which produce metabolic pools during different stages of fiber cell wall formation still have to be identified and their co-regulation during SCW formation elucidated. The crucial dependence on precursor metabolism provides an opportunity to alter xylan modification patterns through metabolic engineering of one or more of these interdependent pathways. The complexity of xylan biosynthesis and modification is currently a stumbling point, but it may provide new avenues for woody biomass engineering that are not possible for other biopolymers.

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Ultrasonic-assisted ionic liquid treatment of chemithermomechanical pulp fibers

Cited by 14 publications

References 40 publications

Investigation of a robust pretreatment technique based on ultrasound-assisted, cost-effective ionic liquid for enhancing saccharification and bioethanol production from wheat straw

Investigation of a robust pretreatment technique based on ultrasound-assisted, cost-effective ionic liquid for enhancing saccharification and bioethanol production from wheat straw

A Review on the Partial and Complete Dissolution and Fractionation of Wood and Lignocelluloses Using Imidazolium Ionic Liquids

Xylan in the Middle: Understanding Xylan Biosynthesis and Its Metabolic Dependencies Toward Improving Wood Fiber for Industrial Processing

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