Study and optimization of parameters affecting the acetylation process of lignin sulfonate biopolymer

Shayesteh, Keivan; Mohammadzadeh, ghasem; Zamanloo, Mohammad Reza

doi:10.1016/j.ijbiomac.2020.09.014

Cited by 19 publications

(6 citation statements)

References 36 publications

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“…The Mt stands for the released mass (embedded urea in Ac-LS) after t amount of time (Fig. 8), and M0 is the released mass (embedded urea in Ac-LS) at zero time [19]. As the ratio between Ac-LS to urea increases, the rate of release undergoes a remarkable decrease.…”

Section: The Results Of Measuring Slow-release Combination Rate In Watermentioning

confidence: 99%

“…Polymers that have been used so far, have not been biodegradable or have not been successful in making achievements in the global industry due to their high prices. Lignin and its derivatives which as biodegradable biopolymer are found widely in the wastewater of paper factory and is not of great value but is highly contaminating, and has been recently used to control the release of urea [18,19].…”

Section: Introductionmentioning

confidence: 99%

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Investigation of the Bioconversion of Urea with Modified Lignosulfonate Biomass as Slow-Release Urea in Aqueous Medium and Rumen Fluid

Seifdavati,

Mohammadzadeh,

Shayesteh

et al. 2024

Preprint

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For producing a combination of urea with acetylated lignosulfonate in the pellet form, the urea release was studied under real conditions in the livestock rumen. Morphological, chemical, and mechanical features of slow-release urea combination with acetylated lignosulfonate and comparing it with lignosulfonate, acetylated lignosulfonate, and urea were studied. The produced pellets with weight percentages (10, 30, 50, and 65) showed the potential of acetylated lignosulfonate in water. For the study of the amount of nitrogen release, slow-release urea (a combination of 65 wt% of acetylated lignosulfonate with 35 wt% of urea) together with three other experimental ratio samples including control ration without urea, urea control supplement ration and Nitro-Za inside the livestock rumen were studied and measured during a period of 0.5 to 24 h. The changes range in Nitro-Za ammonia Nitrogen concentration and the slow-release substance are aligned and similar and the slow-release substance belonging to the urea ration combined with acetylated lignosulfonate showed better performance from the fourth hour. The study results showed positive results regarding supplementing the feed ration with slow-release urea compared to urea and comparable to Nitro-Za.

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Section: The Results Of Measuring Slow-release Combination Rate In Watermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of the Bioconversion of Urea with Modified Lignosulfonate Biomass as Slow-Release Urea in Aqueous Medium and Rumen Fluid

Seifdavati,

Mohammadzadeh,

Shayesteh

et al. 2024

Preprint

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“…Specifically, lignin samples were acetylated to improve their solubility in THF prior to GPC tests. 25 The hydroxy type and content were analyzed by 31 P nuclear magnetic resonance ( 31 P-NMR) spectroscopy using a Bruker 600 MHz spectrometer (Bruker 600, Germany), following the sample preparation process reported before. 26 The morphology of the obtained particles, F n -KLPs, was observed using a transmission electron microscope (TEM, Tecnai Spirit, FEI, USA).…”

Section: Chemical Composition Surface Characterization and Emulsion P...mentioning

confidence: 99%

Interfacial activity and Pickering stabilization of kraft lignin particles obtained by solvent fractionation

et al. 2023

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“…Esterified lignin has altered properties such as higher solubility in non-polar organic solvents, lower melting point and enhanced thermal and oxidation stabilities. As a result, lignin is made more compatible with hydrophobic matrices such as polyolefins and aliphatic polyesters (Buono et al 2016;Sameni et al 2017;Shayesteh et al 2020). One drawback of most lignin esterification methods is that toxic solvents are applied, and hazardous wastes (halogenated species) are generated, particularly for homogeneous catalytic systems (Liu et al 2019).…”

Section: Esterificationmentioning

confidence: 99%

“…Li et al 2020 Acetylation is a classic method for esterification that is generally performed with acetic anhydride or acetyl chloride using pyridine as a catalyst. However, the use of acetic acid as the acylating agent is encouraged because it is relatively cheap, sustainable, and widely available in the market (Shayesteh et al 2020).…”

Section: Esterificationmentioning

confidence: 99%

Lignin functionalization strategies and the potential applications of its derivatives – A Review

Suota

Kochepka

Moura

et al. 2021

BioRes

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Lignin is one of the most important and widespread carbon sources on Earth. Significant amounts of lignin are delivered to the market by pulp mills and biorefineries, and there have been many efforts to develop routes for its valorization. Over the years, lignin has been used to produce biobased chemicals, materials, and advanced biofuels on the basis of its variable functionalities and physicochemical properties. Today, lignin’s applications are still limited by its heterogeneity, variability, and low reactivity. Thus, modification technologies have been developed to allow lignin to be suitable for a wider range of attractive industrial applications. The most common modifications used for this purpose include amination, methylation, demethylation, phenolation, sulfomethylation, oxyalkylation, acylation or esterification, epoxidation, phosphorylation, nitration, and sulfonation. This article reviews the chemistry involved in these lignin modification technologies, discussing their effect on the finished product while presenting some market perspectives and future outlook to utilize lignin in sustainable biorefineries.

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Study and optimization of parameters affecting the acetylation process of lignin sulfonate biopolymer

Cited by 19 publications

References 36 publications

Investigation of the Bioconversion of Urea with Modified Lignosulfonate Biomass as Slow-Release Urea in Aqueous Medium and Rumen Fluid

Investigation of the Bioconversion of Urea with Modified Lignosulfonate Biomass as Slow-Release Urea in Aqueous Medium and Rumen Fluid

Interfacial activity and Pickering stabilization of kraft lignin particles obtained by solvent fractionation

Lignin functionalization strategies and the potential applications of its derivatives – A Review

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