In Washington, Washington State University researchers used a new type of solvent to separate lignin from wood without altering its key properties – a breakthrough that could provide new sources of lignin for advanced renewable fuel and advanced materials applications. The second most abundant renewable carbon source on Earth, the material holds great promise as a precursor for biobased materials and fuels, but it is also notoriously difficult to break apart.
Led by Xiao Zhang, associate professor in the Gene and Linda Voiland School of Chemical Engineering and Bioengineering, the WSU researchers were able extract lignin from poplar and Douglas fir samples in high yields. The lignin products have high purity and distinct characteristics.
The researchers are still working to understand the solvent’s precise mechanism for separating the lignin. They are exploring new applications for this type of lignin and are in discussion with industry partners regarding scaling up production.