一个可持续和经济的解决方案,用于CO2捕获的生物基碳材料,来自棕果核
Jayaprina Gopalan1, Archina Buthiyappan2, Nor Adilla Rashidi3
1Sustainable Process Engineering Centre (SPEC), Department of Chemical Engineering, Faculty of Engineering,, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
概括
这项研究开发了棕果核 (PKS) 的活性碳,以有效捕获二氧化碳 (CO2). 基于PKS的材料,用氧化 (MgO) 功能化,显示出高吸附能力和工业应用的成本效益.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 棕核 (PKS) 是农业副产品,为可持续吸附剂开发提供了机会.
- 活性炭被广泛用于二氧化碳 (CO2) 吸附,但需要具有成本效益和效率的替代品.
- 活性炭的功能化可以增强其吸附性质,用于特定的应用.
研究的目的:
- 为了合成和描述PKS中的活性炭,用于二氧化碳吸附.
- 调查氧化 (MgO) 功能化对基于PKS的活性炭二氧化碳吸附性能的影响.
- 评估开发的用于二氧化碳捕获的吸附剂的经济和环境可行性.
主要方法:
- 来自PKS的活性炭的两步合成,涉及KOH激活和MgO功能化.
- 表面积分析 (BET) 和热重力测量分析 (TGA) 用于材料表征.
- 在不同的条件下进行二氧化碳吸附实验,配备吸附同热体 (Sips,Langmuir) 和热力学分析.
主要成果:
- 经KOH激活的PKS表现出高特异性表面积 (1086 m2/g),通过MgO浸而减少.
- 与PKS-AC (149.63 mg/g) 相比,PKS-AC-MgO在25 °C和5 bar时实现了更高的二氧化碳吸附能力 (155.35 mg/g).
- 吸附过程是自发的,在热力学上是有利的,成本比商业活性炭低21%.
结论:
- 从PKS衍生而来的活性炭和MgO的功能化是一种有希望的,具有成本效益的二氧化碳捕获材料.
- 开发的吸附剂符合循环经济原则,并具有显著的温室气体减排潜力.
- 这种可持续材料显示了工业规模二氧化碳减排战略的潜力.
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