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从废物中获得的活性碳,通过球磨改进:用于CO2捕获和废物回收利用的绿色解决方案

Haif Aljomard^1,2, Omar Awayssa³, Chaouki Ghenai^1,4

¹Biomass and Bioenergy Research Group, Center for Sustainable Energy and Power Systems Research, Research Institute of Sciences and Engineering, University of Sharjah, Sharjah, United Arab Emirates. haifaljomard@gmail.com.

|June 4, 2025

概括

这项研究利用化学激活和球磨来从废弃物生物炭中设计出高性能二氧化碳吸附剂. 优化的材料显示出出色的二氧化碳吸附能力和稳定性,提供可持续的碳捕获解决方案.

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:

垃圾是一种丰富的,未充分利用的资源.
有效的二氧化碳捕获材料对于减缓气候变化至关重要.
将废弃物价值化为功能性材料是一个活跃的研究领域.

研究的目的:

开发高性能二氧化碳吸附剂从废物衍生的生物炭.
研究化学激活 (KOH) 和球磨对吸附性质的影响.
评估工程材料的二氧化碳吸附能力,机制和稳定性.

主要方法:

废弃物生物炭经过HCl预处理,并以各种比例与KOH激活.
使用球磨法进一步增强吸附性质.
在不同的温度和压力下测量了二氧化碳吸附能力.
使用BET表面积,FT-IR,FE-SEM,EDS和TGA进行了表征.
进行了同热和热力学分析.

主要成果:

表面积从3 m2 g-1 (原生物炭) 大幅增加到924.4 m2 g-1 (T-AC1:2).
优化的吸附剂 (n-T-AC1:1) 在0°C和1 bar时达到5.14 mmol g-1的二氧化碳吸附能力.
在不同的温度下,吸附遵循弗洛因利希和雷德利希-彼得森模型.
该材料表现出极好的循环稳定性和再生潜力.

结论:

通过化学和机械处理对的废弃物进行回收,可以产生有效的二氧化碳吸收剂.
开发的材料为碳捕获提供了一个可扩展和可持续的途径.
这种方法有助于减少废物和减缓气候变化的努力.

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