在赛道池中培养的微藻中最大限度地回收聚酸的干燥策略:一项比较研究
Humeira Hassan1, Faiz Ahmad Ansari1, Ismail Rawat1
1Institute for Water and Wastewater Technology, Durban University of Technology, P.O. Box 1334, Durban, 4000, South Africa.
Environmental pollution (Barking, Essex : 1987)
|August 28, 2024
概括
干燥的微藻生物质显著影响了聚基酸盐 (PHB) 的回收. 烤箱干燥提供每单位时间最有效的PHB产量,并且可用于生物塑料生产.
科学领域:
- 生物技术和生物材料
- 可持续的高分子.
- 微藻生物加工 微藻生物加工
背景情况:
- 微藻类是生物塑料的可持续来源,如聚基酸 (PHB).
- 合成塑料带来了环境挑战,需要替代品.
- 从微藻生物质中有效地回收PHB对于其生存能力至关重要.
研究的目的:
- 评估不同干燥技术对微藻PHB回收的影响.
- 为了比较各种干燥方法的能源消耗,时间效率和PHB产量.
- 评估从干燥生物质中获得的PHB的结构和热性能.
主要方法:
- 微藻生物质经过四种干燥技术:阳光,冷,烤箱和空气干燥.
- 每种干燥方法的PHB含量都被量化.
- 记录了能源消耗和干燥时间.
- 福里埃变换红外光谱法 (FTIR),热重力测量分析 (TGA) 和差分扫描热量计 (DSC) 用于表征.
主要成果:
- 冷干燥产生了最高的PHB (6.2%),其次是阳光干燥 (5.2%).
- 烤箱干燥,尽管产量较低 (2%),但提供了每单位时间 (0.33%/h) 的最高PHB产量,并且是最快的 (6h).
- 与湿生物质 (200°C) 相比,干燥生物质产生的PHB具有更高的热稳定性 (高达300°C).
结论:
- 干燥技术极大地影响PHB从微藻中恢复效率和质量.
- 烤箱干燥被认为是PHB恢复的可扩展和时间效率高的方法.
- 该研究强调了微藻衍生PHB作为可持续生物塑料替代品的潜力.
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