Chemical recovery of γ -valerolactone/water-based biorefinery
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Professional
|Title of host publication||International Symposium on Wood, Fibre and Pulping Chemistry 2017 Proceedings|
|Publication status||Published - 30 Aug 2017|
|MoE publication type||D3 Professional conference proceedings|
|Event||International Symposium on Wood, Fibre and Pulping Chemistry - Arraial d'Ajuda Eco Resort, Porto Seguro, BA, Brazil, Porto Seguro, Brazil|
Duration: 30 Aug 2017 → 1 Sep 2017
Conference number: 19
|Conference||International Symposium on Wood, Fibre and Pulping Chemistry|
|Abbreviated title||ISWFPC 2017|
|Period||30/08/2017 → 01/09/2017|
- VTT Technical Research Centre of Finland
The spent liquor was produced from the uncatalyzed fractionation of Eucalyptus globulus wood chips in GVL aqueous solution under selected operational conditions. In distillation experiment, the spent liquor was initially diluted with water in order to partly precipitate the extracted lignin. The diluted liquid was subjected to distillation at reduced pressure to obtain an aqueous distillate containing the volatile compounds and an organic one rich in GVL. The residual liquid, rich in GVL and extracted components, was subjected to another dilution-lignin precipitation-distillation cycle. This method recovered ca. 91% GVL and 90% of the lignin in wood. Besides, inspired by previous pioneering research, we tested and confirmed that near-critical CO2 extraction enables an efficient separation of GVL from its aqueous solution.
Henceforth, we investigate the conversion of batch-wise distillation to continuous mode for improving the recovery rate, and simultaneously construct the extraction unit employing near-critical CO2 to separate GVL from the spent liquor.
- Gamma-valerolactone, Biorefinery, Chemical Recovery, Vacuum Distillation, CO2 Extraction