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Sample Preparation for Analysis: Advanced Techniques

Sample Preparation for Analysis: Advanced Techniques

Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...

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Updated: Jan 19, 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

Solvent Selection for Lignin Value Prior to Pulping.

Thomas T Kwok^1,2, John R Bright¹, Soor R Vora¹

¹School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, GA, 30332, USA.

|September 25, 2019

Summary

This summary is machine-generated.

This study presents a solvent selection method to recover lignin from biomass before pulping (LVPP). It identifies 1,6 hexamethylenediamine and diethanolamine as top candidates for sustainable chemical production.

Keywords:

biomass lignin pulping renewable resources solvent selection

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Last Updated: Jan 19, 2026

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Ultrafast Lignin Extraction from Unusual Mediterranean Lignocellulosic Residues

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Published on: March 9, 2021

Area of Science:

Sustainable Chemistry
Biomass Valorization
Chemical Engineering

Background:

Lignin, derived from lignocellulosic biomass, is a key sustainable feedstock.
Recovering lignin before pulping (Lignin Value Prior to Pulping - LVPP) enhances its utility.
Efficient solvent selection is critical for viable LVPP processes.

Purpose of the Study:

To develop and present a comprehensive solvent selection methodology for LVPP.
To identify optimal solvents for lignin recovery from biomass.
To provide a framework for evaluating solvents for biomass pretreatment applications.

Main Methods:

A multi-stage solvent screening methodology was developed.
Thirty solvents were evaluated across four categories: performance, hazards/environment, cost/availability, and process economics.
Metrics were applied to assess solvent suitability for LVPP.

Main Results:

The methodology successfully reduced a list of 30 solvents to top candidates.
1,6-Hexamethylenediamine and diethanolamine were identified as the most promising solvents for LVPP.
1-Methylpiperazine was also noted as a potential candidate.

Conclusions:

The presented solvent selection methodology streamlines experimental efforts for LVPP.
The identified top-tier solvents offer promising avenues for sustainable lignin recovery.
The study provides valuable biomass pretreatment data for renewable applications.