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二氧化碳对从皮中提取的活性生物碳的吸附

Karolina Kiełbasa¹, Joanna Siemak¹, Joanna Sreńscek-Nazzal¹

¹Department of Catalytic and Sorbent Materials Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Pulaskiego 10, 70-322 Szczecin, Poland.

Molecules (Basel, Switzerland)

|September 14, 2024

概括

研究人员从皮废物中制造出多孔碳,用于二氧化碳 (CO2) 吸附. 这种可持续的生物碳有效捕获来自工业来源的二氧化碳,有助于降低大气中的二氧化碳水平.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
化学工程是化学工程的重要组成部分.

背景情况:

大气中二氧化碳 (CO2) 度的上升对全球生态系统构成重大威胁.
来自生物废弃物的多孔碳提供了可持续的二氧化碳捕获途径.
工业二氧化碳排放需要有效的减排策略.

研究的目的:

从皮废弃物中开发高度多孔的碳,用于选择性二氧化碳吸附.
优化合成过程以提高二氧化碳捕获能力.
评估Radke-Prausnitz方程对于气体固体吸附的适用性.

主要方法:

两步合成:温度预处理 (500°C),然后进行KOH化学激活 (850°C).
多种KOH与碳的比率,以确定最佳的孔隙结构.
在0°C和100kPa时测量二氧化碳吸附能力.
孔腔大小分布和特定表面积的分析.

主要成果:

活性生物碳实现了2821 m2/g的特定表面积和1.39 cm3/g的总孔积.
最佳的CO2吸附能力为5.69mmol/g,记录在0°C和100kPa的温度下.
微孔体积和分布对于高吸附性能至关重要.
拉德克-普劳斯尼茨方程准确地建模了气体-固体吸附平衡.

结论:

皮废物可以转化为高效的多孔碳来捕获二氧化碳.
开发的生物碳显示了减轻工业二氧化碳排放的巨大潜力.
拉德克-普劳斯尼茨方程为理解和预测气体固体吸附提供了一个有价值的工具.

关键词:

二氧化碳吸附方式活性化生物碳的使用.皮和的皮肤

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