Date: Tuesday, 25 June 2024
Time: 17:30 - 18:30 CEST
Session code 6BV.10
Processes for bio-based chemicals and materials 2
Continuous Silica Extraction from Rice Husk By One-Pot Alkali Hydrothermal Treatment/ball Milling And Applicability of its Residue to Anaerobic Digestion for Methane Production
Short Introductive summary
Rice husk is a promising abundant bioresource for the production of high value added silica materials because it has the highest SiO2 content among all plant based resources. In this study, a one-pot alkali hydrothermal and ball-milling continuous silica extraction method was developed to extract silica from rice husk. The silica production was 4.09, 2.67, and 2.22 kg d-1 while the silica extraction yield was 52.8, 69.1, and 86.0 % at resident times of 50, 100, and 150 min, respectively. During long-term of 150 min operation, the process exhibited a constant solid content and stable silica extraction yield. After silica extraction, a solid residue comprising mostly carbohydrates was present and applied to anaerobic digestion for producing biomethane. The residue produced 166.4 mL-biogas g-1 VS and 100.4 mL CH4 g-1 VS. This study presents a novel continuous silica extraction method for the efficient recovery of silica from rice husk-based biorefineries and provides a basis for the cleaner utilization of rice husk residue to produce renewable energy.
Presenter
Jin Hyung LEE
Korea Institute of Ceramic Engineering and Technology, Convergence center for Bioceramics
Presenter's biography
Jin Hyung Lee is a center leader of convergence center for bioceramics in Korea Institute of Ceramic Engineering and Technology. He received his M.Sc. and Ph.D. degree in Environmental Science and Engineering from GIST, Rep. Korea in the year 2003 and 2007, respectively.
Biographies and Short introductive summaries are supplied directly by presenters and are published here unedited
Co-authors:
J.Y. Park, Korea Institute of Ceramic Engineering and Technology, Cheongju, REPUBLIC OF KOREA
Session reference: 6BV.10.20