Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 7, Issue 5, Pages 5532-5542Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b06853
Keywords
Chitin; Shrimp shell; Deproteinization; Demineralization; Hot water treatment; Life-cycle analysis
Categories
Funding
- National University of Singapore Young Investigator Award [WBS: R-279-000-464-133]
- SMART innovation grant [R-279-000-500-592]
- MOE [WBS: R-279-000-462-112]
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Biomass fractionation is a prerequisite for almost any biorefinery process. Yet, a cost-effective and environmentally benign approach to separate biomass feedstock into valuable fractions remain a challenge. Herein we introduce a new fractionation method to extract high value chitin from crustacean shell (e.g., shrimp shell) using hot water for deproteinization and carbonic acid for demineralization (termed as the HOW-CA process). This method features high deproteinization and demineralization efficiencies (>90%), and the whole process is accomplished within hours. The desired final product chitin exhibits a high purity. This work addresses the major problems associated with the current industrial practice including the employment of corrosive reagents, the destructive removal of a useful component, and the generation of a large amount of waste. Economic and life-cycle analyses imply that the HOW-CA process is superior to the conventional method, offering both economic and environmental benefits.
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