从红色海藻中提取agar的创新技术的生命周期评估和成本分析
Sara G Pereira1, António A Martins2, Teresa M Mata3
1CEB - Centre of Biological Engineering, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal.
Bioresource technology
|October 17, 2024
概括
使用亚临界水提取和温和电场的综合技术提供了最可持续和最具成本效益的方法来从红藻中提取. 与传统方法相比,这种创新方法可以显著降低能源消耗和碳足迹.
科学领域:
- 海洋生物技术 海洋生物技术
- 可持续的化学工程 可持续的化学工程
- 食品科学 食品科学 食品科学
背景情况:
- 传统的阿加提取方法在效率和可持续性方面存在局限性.
- 越来越需要创新的技术来从海藻中提取有价值的生物化合物.
- 红色海藻如 *G. sesquipedale* 和 *G. vermiculophylla* 是丰富的阿加的来源.
研究的目的:
- 为了比较三种新型亚格拉提取技术的效率和可持续性.
- 为了评估亚临界水提取,温和的电场,和一个结合的方法.
- 评估这些方法对 *G. sesquipedale* 和 *G. vermiculophylla* 的环境和经济可行性.
主要方法:
- 生命周期评估 (LCA) 和生命周期成本 (LCC) 用于门到门的分析.
- 在不同的温度和压力下进行了亚临界水提取 (SWE).
- 适度电场 (MEF) 应用于不同的温度和持续时间.
主要成果:
- 结合的SWE和MEF技术显示了最低的能量消耗 (G. vermiculophylla*的67MJ/kg,G. sesquipedale*的100MJ/kg).
- 与对照组相比,碳足迹减少了高达94%,排放量为15.9公斤二氧化碳等值/公斤 (G. vermiculophylla) 和20.4公斤二氧化碳等值/公斤 (G. sesquipedale).
- 使用光伏电池板进一步减少了50%的碳排放.
结论:
- 合并的亚临界水提取和温和电场方法是最可持续和最具成本效益的阿加提取方法.
- 这种综合技术提供了显著的环境效益,包括减少能源消耗和减少碳排放.
- 这些发现支持采用先进的提取技术,以实现可持续的海藻生物加工.
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