Ultrafiltration-based recovery of kraft lignin from black liquor for depolymerization purposes

Key Points

• This method shows a significant increase in the recovery of kraft lignin from black liquor, enhancing its usability.
• The recovery rate reached 85%, highlighting the efficiency of ultrafiltration in lignin extraction.
• Assessment involves ultrafiltration techniques to separate kraft lignin from complex black liquor solutions.
• Improving lignin recovery supports biorefinery processes; further optimization may be needed for industrial application.