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Related Experiment Video

Updated: May 16, 2026

Extraction of Lignin with High β-O-4 Content by Mild Ethanol Extraction and Its Effect on the Depolymerization Yield

Extraction of Lignin with High β-O-4 Content by Mild Ethanol Extraction and Its Effect on the Depolymerization Yield

Published on: January 7, 2019

Preparing spherical lignin from rice husk.

Hongxi Zhang¹, Xu Zhao, Xuefeng Ding

¹College of Chemistry, Jilin University, Changchun, China.

Bioprocess and Biosystems Engineering

|November 27, 2012

Summary

This summary is machine-generated.

Researchers developed a simple method to create regular lignin spheres from rice husk. This breakthrough offers potential applications in functional materials and cosmetics.

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Area of Science:

Polymer Science
Materials Science
Biomass Valorization

Background:

Lignin, a branched amorphous polymer, typically exhibits irregular morphology.
Conventional methods for preparing regular lignin spheres are complex and require specific conditions.

Purpose of the Study:

To develop a straightforward method for synthesizing regular lignin spheres.
To explore the potential applications of these synthesized lignin spheres.

Main Methods:

Rice husk (RH) was processed with a 35% ethanol aqueous solution (1:10 g:mL ratio).
The mixture underwent non-isothermal heating to 493 K for 5 hours.
Product was isolated via filtration and air-drying.

Main Results:

Uniform lignin spheres with diameters ranging from 100-400 nm were successfully obtained.
A proposed mechanism for the formation of regular spherical lignin was discussed.

Conclusions:

A simple and efficient method for producing regular lignin spheres from rice husk has been established.
These lignin spheres show promise for applications in reactive functional materials, photosensing materials, and cosmetic surface-active agents.