Effect of Molar Ratios of DES on Lignin Contents and Handsheets Properties of Thermomechanical Pulp

Choi, Kyoung-Hwa; Lee, Myoung-Ku; Ryu, Jeong-Yong

doi:10.7584/ktappi.2016.48.2.028

Cited by 6 publications

(3 citation statements)

References 6 publications

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“…DESs have potential applications in the pulp, paper, and recycling industries. DESs have been used to delignify different biomasses such as wheat straw (de Dios 2013;Jablonsky et al 2015b;Skulcova et al 2016), rice straw (Kumar et al 2015), pine wood (de Dios 2013), and thermomechanical pulp (Choi et al 2016). Lignin is the second most abundant natural polymer after holocellulose.…”

Section: Introductionmentioning

confidence: 99%

UV/Vis Spectrometry as a Quantification Tool for Lignin Solubilized in Deep Eutectic Solvents

et al. 2017

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In this short communication, UV/Vis spectrophotometry is described as an analytical tool for the quantification of lignin content in deep eutectic solutions. The lignin was solubilized with different deep eutectic solvent (DES). DESs were prepared as binary mixtures of choline chloride with lactic acid (1:9); (1:10); ethylene glycol (1:2); glycerol (1:2) and alanine:lactic acid (1:9), and betaine:lactic acid (1:2). The UV-Vis spectrometric quantification of the solubilized lignins was independent of the type of solubilized lignin. The approach consists of measuring the absorbance of a solution of lignins dissolved in the deep eutectic solvents at an absorbance of 440 nm.

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Section: Introductionmentioning

confidence: 99%

UV/Vis Spectrometry as a Quantification Tool for Lignin Solubilized in Deep Eutectic Solvents

et al. 2017

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“…The rising importance of DES can be observed from the increasing publication number in the last decade from the Web of Science (2023) (Figure 1). During the last decade, DESs have been extensively studied in biomass fractionation (Li et al, 2017;Pan et al, 2017;Xu et al, 2018;Lyu et al, 2018;Kwon et al, 2020;Yan et al, 2023) and pulping (Choi et al, 2016a;2016b;Smink et al, 2019;Gülsoy et al, 2022a;2022b;Gülsoy, 2023).…”

Section: Introductionmentioning

confidence: 99%

Effect of ternary deep eutectic solvents on delignification of stone pine cone

Özgürlük,

Özlüsoylu,

Gülsoy

et al. 2023

Turkish Journal of Forestry | Türkiye Ormancılık Dergisi

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Due to their cost-effectiveness and environmentally friendly nature, deep eutectic solvents (DESs) hold great potential for applications in biomass conversion and the production of green chemicals. In this study, the delignification of the stone pine (Pinus pinea L.) cone was performed using seven different ternary deep eutectic solvents (TDESs). TDES treatments of stone pine cone samples were carried out in a microwave for 30 min. at 150 °C. The two-based components of TDESs were choline chloride (ChCl - 1 mol) and lactic acid (LA - 9 mol). The formic acid (FA – 2 mol), boric acid (BA – 1 mol), acetic acid (AA – 2 mol), sorbitol (S – 1 mol), triethylene glycol (TEG – 2 mol), ethylene glycol (EG – 2 mol), and glycerol (G – 2 mol) were used as third component of TDES. ChCl:LA:BA gave the lowest solid residue yield (57.90%) and highest lignin purity (86.89%). Klason lignin content of control was 35.08%. The lowest lignin content (19.42%) and highest delignification (68.89%) were obtained with ChCl:LA:FA treatment. The lowest and the highest L* values were obtained from ChCl:LA:BA and ChCl:LA:EG treatments with 21.76 and 37.36, respectively. This results showed that the third component of TDES affects the delignification efficiency of stone pine cone.

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“…Due to the formation of hydrogen bonds between the DES components, DESs are characterized by a large depression or freezing point (Vigier et al 2015). Since DESs introduction, several research papers have been published on their use in the delignification process (de Dios 2013;Francisco et al 2012;Jablonsky et al 2015;Kumar et al 2016;Choi et al 2016;Skulcova et al 2016). Among other advantages, DESs may be used for the dissolution and hydrolysis of some lignocellulosic components, such as lignin, under mild conditions compared to other methods (Majova et al 2017a).…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of pulp delignified by deep eutectic solvents

Škulcová¹,

Majová²,

Šíma

et al. 2017

BioRes

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Mechanical properties were evaluated for pulp delignified by four deep eutectic solvents (DES). The DES systems were based on choline chloride and lactic acid (1:9), oxalic acid:dihydrate (1:1), malic acid (1:1), and the system alanine:lactic acid (1:9). The results indicated that the type of DES system used influenced the delignified pulp’s mechanical properties including tensile, burst and tear indexes, tensile length, and stiffness. The most suitable DES systems were choline chloride:malic acid (1:1) and alanine:lactic acid (1:9), which achieved the best aforementioned mechanical properties compared to the other DES systems. The weakest performance in the process of pulp delignification was the system with choline chloride and oxalic acid dihydrate (1:1).

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Effect of Molar Ratios of DES on Lignin Contents and Handsheets Properties of Thermomechanical Pulp

Cited by 6 publications

References 6 publications

UV/Vis Spectrometry as a Quantification Tool for Lignin Solubilized in Deep Eutectic Solvents

UV/Vis Spectrometry as a Quantification Tool for Lignin Solubilized in Deep Eutectic Solvents

Effect of ternary deep eutectic solvents on delignification of stone pine cone

Mechanical properties of pulp delignified by deep eutectic solvents

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