从林业和城市废物中获得的碳质材料上的CO2吸附:一项比较研究
Siby I Garcés-Polo1, Gabriel de Jesús Camargo Vargas2, Paola Rodríguez Estupiñán3,4
1Facultad de Ingeniería, Universidad Libre, Barranquilla, Colombia. siby.garces@unilibre.edu.co.
Environmental science and pollution research international
|October 14, 2023
概括
研究人员探索使用森林残留物和轮胎等废物材料来创建二氧化碳 (CO2) 捕获的活性碳. 树衍生的活性炭显示出最高的二氧化碳吸附能力,这表明可持续的二氧化碳减排战略的潜力.
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:
- 人为二氧化碳 (CO2) 排放量的增加推动了全球变暖,需要有效的缓解策略.
- 使用多孔材料的吸附是一种可持续的二氧化碳捕获和缓解方法.
- 废物材料的回收利用,如森林残留物和旧轮胎,为吸附剂生产提供了一个环保的来源.
研究的目的:
- 调查来自树 (ES) 和帕图拉松 (PP) 森林废物的活性炭和废旧轮胎 (WT) 的碳质材料的二氧化碳平衡吸附性能.
- 准备和描述新型吸附剂,包括单体,用于二氧化碳捕获应用.
- 评估材料性能和工艺条件 (温度,压力) 对二氧化碳吸附能力的影响.
主要方法:
- 森林废弃物和废旧轮胎材料的前体制备和表征.
- 热化学处理 (酸) 和氧化 (酸) 以产生活性炭和碳酸性材料.
- 使用与蒙特莫里隆石作为粘合剂的单轴压缩制造吸附单体.
- 纹理和化学性质的表征 (例如,表面积,微孔性).
- 在低温 (0,10,20°C) 和低压下实验性确定二氧化碳平衡吸附等温体.
主要成果:
- 来自树 (ES) 的活性炭表现出最高的特定表面积 (1405 m2 g-1) 和微孔性质.
- 对于ES,观察到最高的二氧化碳吸附能力,从2.27 mmol g−1 (在0 °C) 到1.60 mmol g−1 (在20 °C) 在100 kPa.
- 与粉末形式相比,单质吸附剂通常具有较低的二氧化碳吸附能力.
- 吸附的异热在16至45kJmol-1之间,表明能量异质性和弱相互作用.
结论:
- 树衍生活性炭显示出大量的二氧化碳捕获潜力,这是由于其优越的表面积和微孔结构.
- 研究的材料对二氧化碳的捕获和储存非常有希望,特别是在更高的压力下.
- 将废物提升为有效的二氧化碳吸收剂,为环境修复和资源管理提供了可持续的途径.
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