准备吸附材料的实验策略是从化棕核中制备吸附材料,以捕获CO2为导向
Marlon Cordoba-Ramirez1,2, Farid Chejne3, Jader Alean4
1Mechanical Engineering Program - DESTACAR Research Group, Faculty of Engineering, Universidad de La Guajira, km 3+354 via Maicao, 440001, Riohacha, Colombia. mfcordoba@uniguajira.edu.co.
Environmental science and pollution research international
|February 13, 2024
概括
这项研究探讨了使用化的棕核来制造生物炭和活性碳,以有效地去除二氧化碳 (CO2). 优化的材料实现了高的二氧化碳吸附能力,提供了可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 棕核是一种丰富的生物质资源.
- 热化学转换为可持续材料生产提供了途径.
- 有效的二氧化碳 (CO2) 捕获对于减缓气候变化至关重要.
研究的目的:
- 评估一种实验策略,从烧焦的棕果核外中生产生物炭和活性炭,以去除二氧化碳.
- 调查化和热解温度对材料性能和二氧化碳吸附能力的影响.
- 为了确定开发高效的二氧化碳吸收剂从生物质的最佳条件.
主要方法:
- 棕核在各种温度 (220-280°C) 上经过烧烤.
- 生物炭是通过不同温度 (350-700°C) 的慢热解来生产的.
- 活性炭是通过二氧化碳对生物炭的物理激活来制备的.
- 使用热重力测量分析 (TGA) 测量了二氧化碳吸附能力.
- 材料的表征包括富里埃变换红外光谱法 (FTIR).
主要成果:
- 造影响了O/C和H/C比率和功能组,有利于在热解过程中脱氧.
- 微孔表面积随着更高的热解温度而增加,增强了二氧化碳吸附点.
- 在700°C时,非化的生物炭显示了75 mg/g的二氧化碳吸附.
- 来自化贝 (T280-CHAR700-AC) 的活性炭达到101.9 mg/g CO2的最高吸附率.
- 含氧的功能组与二氧化碳吸附性能正相关.
结论:
- 热解温度是生物炭中二氧化碳吸附能力的关键因素.
- 化预处理提高了从棕核中生产二氧化碳吸附剂的效率.
- 该研究提出了一种可行的热化学途径,用于从生物质中生产高性能二氧化碳吸附剂.
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