Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, People's Republic of China.
Hangzhou Shangtuo Environmental Technology Co. Ltd, Hangzhou, People's Republic of China.
Environ Technol. 2024 Sep;45(22):4576-4584. doi: 10.1080/09593330.2023.2260118. Epub 2023 Nov 15.
Chitin biomass is the second largest biomass resource on Earth but under-utilized. In this study, pretreated shrimp shells were converted into value-added platform chemical 5-hydroxymethylfurfural (HMF) using microwave hydrothermal treatment. Under the combined pretreatment of acid decalcification at room temperature and microwave-assisted alkali deacetylation, the HMF yield could reach 1.8 wt%. The key process parameters, including the holding temperature, holding time, and pH value, were evaluated and optimised. The highest HMF yield of 6.5 wt% was obtained at 202.6°C at a holding time of 5.8 min and a pH value of 1.5. This result demonstrates the potential of synchronously treating waste and recycling it, thereby offering a highly promising valorisation strategy for chitin-biomass utilisation.
甲壳素生物质是地球上第二大生物质资源，但尚未得到充分利用。在这项研究中，采用微波水热处理法，将预处理过的虾壳转化为高附加值的平台化学品 5-羟甲基糠醛（HMF）。通过在室温下进行酸脱钙和微波辅助碱脱乙酰基的联合预处理，HMF 的产率可达到 1.8wt%。评估和优化了关键工艺参数，包括保温温度、保温时间和 pH 值。在 202.6°C 保温 5.8 分钟、pH 值为 1.5 的条件下，HMF 的产率最高可达 6.5wt%。该结果表明，同步处理废弃物并进行回收利用具有巨大潜力，为甲壳素生物质的利用提供了一种极具前景的增值策略。
