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通过微藻的热水碳化联合生产碳点和水炭:转化机制和反应动力学

Jingmiao Zhang¹, Qingming Zhou¹, Ao Xia¹

¹Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing 400044, China; Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing 400044, China.

Bioresource technology

|September 12, 2025

概括

绿色微藻 (Chlorella pyrenoidosa) 可以通过水热碳化转化为碳点 (CD) 和 (HC). 这项研究模拟了联合生产动力学,优化了光材料和固体燃料的产量.

科学领域:

生物质转换生物质转换
材料科学是一种材料科学.
化学动力学化学动力学

背景情况:

水热碳化 (HTC) 为生物质价值化提供了一个可持续的途径.
从微藻中共同生产功能性碳材料,如碳点 (CD) 和 (HC),具有经济和环境的好处.
了解反应动力学对于优化HTC过程至关重要.

研究的目的:

通过水热碳化 (HTC) 来研究绿色微藻Chlorella pyrenoidosa (CP) 的碳点 (CD) 和 (HC) 的联合生产.
建立和验证这个联合生产过程的反应动力学模型.
探索酸 (CH3COOH) 对产量和产品特性的影响.

主要方法:

在230°C下120分钟的时间内,Chlorella pyrenoidosa的水热碳化.
对实验数据进行反应动力学模型的开发和验证 (99.1%的同意).
对反应途径的分析,包括CD和微分子之间的相互转换,以及酸添加的效果.

主要成果:

实现了CD (15.7%的收益率) 和HC (14.2%的收益率) 的联合生产.
确定CD和微分子之间的相互转换是受温度影响的初级反应.
添加酸通过促进水解和抑制降解,提高了CDs的产量,但过量导致通过CDs聚合生成HC.

结论:

已建立的动力学模型准确地描述了微藻中CDs和HC的联合生产.
优化热水温度和酸度是最大限度地提高产量和产品所需性能的关键.
这项研究为有效地将生物质转化为有价值的碳材料提供了一个框架.

关键词:

生物质水热碳化生物质碳化.克洛瑞拉 (Chlorella pyrenoidosa) 是一种天然的植物.功能化碳材料是一种功能化碳材料.一次反应的动力模型.有机酸催化剂有机酸催化剂

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