Polar solvents enhance the efficiency of microwave pre-treatment of woody biomass

Amini, Negin; Dwivedi, Swarit; Ahmad, Waqar; Haritos, Victoria S.; Tanksale, Akshat

doi:10.1016/j.biombioe.2021.106281

Cited by 7 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some solvents that are useful for microwave-assisted organosolv process with this respect with high loss tangent, low cost, and ready availability include isopropyl alcohol, ethylene glycol, methanol, formaldehyde, etc. (Amini et al 2021 ).…”

Section: Solvent Selection Parameters In the Organosolv Methodsmentioning

confidence: 99%

Organosolv pretreatment: an in-depth purview of mechanics of the system

Nair

Agrawal

Verma

2023

Bioresour. Bioprocess.

View full text Add to dashboard Cite

The concept of biorefinery has been advancing globally and organosolv pretreatment strategy has seen an upsurge in research due to its efficiency in removing the recalcitrant lignin and dissolution of cellulose. The high-performance organosolv system uses green solvents and its reusability contributes concurrently to the biorefinery sector and sustainability. The major advantage of the current system involves the continuous removal of lignin to enhance cellulose accessibility, thereby easing the later biorefinery steps, which were immensely restricted due to the recalcitrant lignin. The current system process can be further explored and enhanced via the amalgamation of new technologies, which is still a work in progress. Thus, the current review summarizes organosolv pretreatment and the range of solvents used, along with a detailed mechanistic approach that results in efficient pretreatment of LCB. The latest developments for designing high-performance pretreatment systems, their pitfalls, and advanced assessments such as Life Cycle Assessment along with Techno-Economic Assessment have also been deliberated to allow an insight into its diverse potential applicability towards a sustainable future. Graphical Abstract

show abstract

Section: Solvent Selection Parameters In the Organosolv Methodsmentioning

confidence: 99%

Organosolv pretreatment: an in-depth purview of mechanics of the system

Nair

Agrawal

Verma

2023

Bioresour. Bioprocess.

View full text Add to dashboard Cite

show abstract

“…According to the ion conduction process, charged ions oscillate back and forth in the microwave electromagnetic field, collide with nearby molecules, and produce heat because of the friction. The mechanism of dipole polarization is that, due to the unbalanced charge distribution in the molecules, polar molecules in the reaction system or non-polar molecules that can produce instantaneous dipoles oscillate rapidly at a rate of 4.91 times per second under the influence of microwave electric field components [38]. The vibration of molecular dipoles should closely match the vibration of the magnetic field because of the friction and dielectric loss between molecules.…”

Section: Mechanism Analysis Of Accelerated R P In Pce Polymerization ...mentioning

confidence: 99%

Investigating the Effect of Microwave Induction on the Polymerization Rate of Polycarboxylate Superplasticizers

Zhang,

Du,

Wang

et al. 2024

Polymers

View full text Add to dashboard Cite

As a transmission medium and heating energy, microwave is widely favored due to its high efficiency, strong selectivity, and easy control. Here, the effects of different heating methods (conventional thermal induction (CI) and microwave induction (MI)) on the polymerization rate of polycarboxylate superplasticizer (PCE) were investigated. Compared with CI, MI significantly boosted the polymerization rate (by approximately 51 times) and markedly decreased the activation energy (Ea), from 46.83 kJ mol−1 to 35.07 kJ mol−1. The polar of the monomers and initiators in the PCE synthesis contributes to varying permittivities and loss factors under the microwave field, which are influenced by their concentration and reaction temperature. The insights gained from the microwave thermal effects and the micro-kinetics of the PCE polymerization system are able to propose theoretical underpinnings for the industrial-scale application of microwave induction polymerization, potentially steering the synthesis of polymer materials towards a more efficient and cleaner process.

show abstract

“…In addition, plant cells have dense and complex cell walls, and cell walls hinder the entry of chemical liquid into the fiber. In recent years, many researchers have used different methods to pretreat biomass, and different pretreatment methods have their own advantages and disadvantages [72][73][74][75][76][77][78][79][80][81][82][83]. To obtain CSB fibers, Reddy and Yang used sodium hydroxide to remove non-fibrous materials [84].…”

Section: Introductionmentioning

confidence: 99%

Effects of different amounts of cellulase on the microstructure and soluble substances of cotton stalk bark

Xie

Tian

Liu

et al. 2022

Adv Compos Hybrid Mater

View full text Add to dashboard Cite

There are plant cuticle and complex cell walls on the outer surface of cotton stalk bark (CSB), which reduce the efficiency of liquid penetration of CSB. To increase the permeability of liquids, these barriers need to be broken. Cellulase can selectively hydrolyze cellulose into glucose, and its action conditions are mild. Therefore, cellulase treatment is one of the excellent ways to break the CSB liquid permeation barrier. This experiment studied the effects of different amounts of cellulase treatment on the enzymatic hydrolysis products and surface of CSB. Scanning electron microscopy (SEM) and nano-CT were used to observe the changes in the microscopic morphology of CSB. Ion chromatography and an ultraviolet–visible spectrophotometer were used to determine the dissolution of CSB. The results showed that the cuticle of CSB treated with cellulase was broken, and the cell wall of phloem fibers became thinner, which increased the accessibility of liquid. The content of monosaccharide and lignin in CSB treatment solution increased with the increase of cellulase dosage. Correspondingly, the proportion of polysaccharides on the outer surface of CSB continued to decline and eventually stabilized. These experimental results can provide a reference for improving the permeability of natural fibers and the subsequent treatment effects of biomass products. Graphical abstract The pretreatment of cotton stalk barks with cellulase destroyed the dense protective structure of cell wall, and the content of monosaccharide and lignin in the treated solution increased with the increase of cellulase dosage.

show abstract

Polar solvents enhance the efficiency of microwave pre-treatment of woody biomass

Cited by 7 publications

References 23 publications

Organosolv pretreatment: an in-depth purview of mechanics of the system

Organosolv pretreatment: an in-depth purview of mechanics of the system

Investigating the Effect of Microwave Induction on the Polymerization Rate of Polycarboxylate Superplasticizers

Effects of different amounts of cellulase on the microstructure and soluble substances of cotton stalk bark

Contact Info

Product

Resources

About