Butyration of Lignosulfonate with Butyric Anhydride in the Presence of Choline Chloride

Li, Lifen; Hu, Yingcheng; Cheng, Fangchao

doi:10.15376/biores.10.2.3181-3196

Cited by 4 publications

(3 citation statements)

References 37 publications

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“…Such changes would be evident, considering the introduction of alkyl moieties and the changes in the phenolic structures in the lignin. All in all, the FTIR results are in line with established literature, 37 , 56 underpinning successful esterification of the Kraft lignin with fatty acids.…”

Section: Resultssupporting

confidence: 88%

Interfacial Adsorption of Oil-Soluble Kraft Lignin and Stabilization of Water-in-Oil Emulsions

Ruwoldt,

Handiso,

Øksnes Dalheim

et al. 2024

Langmuir

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In this paper, the potential of esterified Kraft lignin as a novel oil-soluble surfactant was examined. The lignin was chemically modified by esterification with lauric or stearic acid, making it soluble in solvents such as toluene or n-decane. Adsorption at the oil−water interface was then studied by the Du Nouÿ ring-method. The oil-soluble lignin behaved similar to watersoluble lignin surfactants, both the qualitative and quantitative progression of interfacial tension. Modeling revealed a surface excess of 7.5−9.0 × 10 −7 mol/m 2 , area per molecule of 185−222 Å 2 , and a diffusion coefficient within the range 10 −10 to 10 −14 m 2 /s; all of which are in line with existing literature on water-soluble lignosulfonates. The data further suggested that the pendant alkyl chains were extended well into the paraffinic solvent. At last, bottle tests showed that the oil-soluble lignin was able to stabilize oil-in-water emulsions. The emulsion stability was affected by the concentration of lignin or NaCl as well as the oil phase composition. Aromatic oils exhibited lower emulsion stability in comparison to the aliphatic oil. In conclusion, a new type of surfactant was synthesized and studied, which may contribute to developing green surfactants and novel approaches to valorize technical lignin.

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Section: Resultssupporting

confidence: 88%

Interfacial Adsorption of Oil-Soluble Kraft Lignin and Stabilization of Water-in-Oil Emulsions

Ruwoldt,

Handiso,

Øksnes Dalheim

et al. 2024

Langmuir

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“…Moreover, increase in flux is due to the increase in pore size of membrane while increasing the ChCl amount in CA. Possible interaction mechanism of phenol with ChCl blended CA is shown in Scheme 1 [33][34][35]. Choline chloride OH − group may attach with oxygen atom of hydroxyl group in CA and releasing hydrogen to form the H 2 O during blending [24].…”

Section: Phenol Separation 341 Selection Of CMmentioning

confidence: 99%

Phenol Removal by Novel Choline Chloride Blended Cellulose Acetate-Fly Ash Composite Membrane

Gupta

Chathurappan

Anandkumar

2019

Period. Polytech. Chem. Eng.

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A novel composite membrane (CM) was prepared by coating choline chloride (ChCl) blended cellulose acetate (CA) on fly-ash based ceramic substrate for phenol removal. Different amount (0-1 g) of ChCl was blended with CA to synthesize various CMs. Amount of ChCl in CA increases the contact angle, average pore radius, permeability of CM from 55.15° to 71.55°, 1.6 to 6.83 nm and 0.0057 to 0.0152 L·m−2·h−1·kPa−1, respectively. Phenol rejection increased from 56 to 93 % while increasing ChCl amount in CA. Phenol removal decreased from 94.26-64.23 % and 91.09-78.62 % with increase in applied pressure (69-483 kPa) and feed concentration (50-200 mg·L−1). However, removal rate increased from 80.46-92.47 % with increase in pH 2-12. Among all CMs, CC5 is identified as best CM with maximum phenol removal efficiency (92.7 %) and flux (1.86 L·m−2·h−1) at 207 kPa applied pressure and 100 mg·L−1 of feed phenol concentration. The obtained results reveal that blending of 0.9 % ChCl with CA can significantly enhances the phenol removal efficiency and this could be used as potential CM for treatment of phenol bearing wastewater.

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“…Acetylated polysaccharides from Pleurotus geesteranus showed anti-inflammatory, antioxidant, and lung protection effects [ 13 ]. Butyrylated inulin, kraft lignin and lignosulfonate have also been reported [ 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Evaluation of Antioxidant and Potential Prebiotic Activities of Acetylated and Butyrylated Fructo-Oligosaccharides

et al. 2022

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Fructo-oligosaccharides (FOS) have well-known bifidogenic effects as probiotics. In this study, esterification was adopted for FOS modification to produce better prebiotic properties. We synthesized and characterized acetylated fructo-oligosaccharides (Ac-FOS) and butyrylated fructo-oligosaccharides (Bu-FOS) as candidate prebiotics. Antioxidant activity and prebiotic esactiviti were evaluated as important indicators. We found, surprisingly, that butyrylation was an effective method in significantly improving the antioxidant activity of FOS. The fermentation products of feces from mice added to Ac-FOS and Bu-FOS, were investigated in vitro, including changes of pH values, short-chain fatty acids (SCFAs) production, and microbiota composition. Supplementation of Ac-FOS or Bu-FOS increased pH values and promoted the growth and activity of beneficial intestinal bacteria, such as Bifidobacteria and Lactobacillus. More importantly, the levels of prebiotic SCFAs were obviously elevated as detected by Gas Chromatography–Mass Spectrometry (GC-MS). Results suggest that Ac-FOS and Bu-FOS have great potential applications in SCFA delivery systems and gut microbiota regulation.

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Butyration of Lignosulfonate with Butyric Anhydride in the Presence of Choline Chloride

Cited by 4 publications

References 37 publications

Interfacial Adsorption of Oil-Soluble Kraft Lignin and Stabilization of Water-in-Oil Emulsions

Interfacial Adsorption of Oil-Soluble Kraft Lignin and Stabilization of Water-in-Oil Emulsions

Phenol Removal by Novel Choline Chloride Blended Cellulose Acetate-Fly Ash Composite Membrane

Synthesis and Evaluation of Antioxidant and Potential Prebiotic Activities of Acetylated and Butyrylated Fructo-Oligosaccharides

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