Abstract
Common seafood wastes, chitin and oyster shell, were co-pyrolyzed in different atmospheric conditions of N2 and CO2 to investigate the effects of blending the two wastes on syngas production and adsorption capability of the produced biochar in Cu(II) adsorption. The gas analyses indicated that amendment of oyster shell to chitin pyrolysis substantially enhanced production of H2 and CO as compared to using chitin as a sole feedstock. The enhanced syngas production was deemed to arise from the catalytic effect of calcite (CaCO3) contained in oyster shell that expedited thermal decomposition of chitin. The syngas production was more pronounced in N2 condition than in CO2 condition. The biochar samples produced from co-pyrolysis in both atmospheric conditions had different mineralogical composition and surface characteristics. The biochar produced under CO2 condition showed strong pH buffering capacity to maintain the pH increase within neutral range. The maximum adsorption capacity of CO2 biochar was 2.5 times (∼1,000 mg g−1) higher than N2 biochar (∼400 mg g−1), which was attributed to the abundance of calcite particles that served as major reactive sites of ion exchange reaction with Cu(II). In overall, this study offers an effective strategic way to maximize syngas production and produce biochar with specific functionality.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.