热解行为,动力学分析,以及从废花中产生生物炭的方法
Richa Gupta1, Ranjeet Kumar Mishra2, Kaustubha Mohanty1
1Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India.
ACS omega
|March 10, 2025
概括
废花可以通过热解可持续地转化为生物炭. 这项研究详细介绍了 pyrolysis 过程,动力学分析和从黄花中提取的生物炭的特征,突出了其对土壤修改和碳封存的潜力.
科学领域:
- 废物管理和回收利用
- 生物质热解和生物炭生产
- 可持续化学和循环经济
背景情况:
- 垃圾花是一种重要的有机废物流,具有可持续价值化潜力.
- 热解提供了一个有前途的热化学转化途径,用于将花废物转化为有价值的生物炭.
- 了解热解行为和动力学对于优化生物炭生产和应用至关重要.
研究的目的:
- 为了研究废物花的热解行为和运动参数.
- 为了潜在的应用,从废花中生产和表征生物炭.
- 评估在循环经济框架内利用废弃花用于生物炭生产的可行性.
主要方法:
- 热重力测量分析 (TGA) 用于研究不同加热速率下的热降解.
- 使用无模型的动力学方法 (弗里德曼,奥扎瓦-弗林-沃尔,斯塔林克,基辛格-阿卡希拉-苏诺斯) 来确定动力学参数.
- 生物炭是在半批次反应堆中生产的,并使用近距离分析,元素分析,BET表面积,FTIR,FESEM和其他技术进行了表征.
主要成果:
- 花废物的分解发生在三个阶段:去除水分,活性热解和残留物形成.
- 动力分析表明多步反应机制,平均激活能量在221.50到236.35kJmol-1.1之间.
- 红花的热解产生了36.64重量%的生物炭,含碳量为57.10%,加热值高达33.57 MJ kg-1,BET表面积为9.96 m2 g-1.1.
结论:
- 废花是生产生物炭的可行的原料,具有有利于土壤修改和碳捕获的特征.
- 动态数据为优化热解条件提供了有价值的见解,以实现高效的生物炭生产.
- 该研究支持利用花废物生产生物炭,为可持续废物管理和循环经济原则做出贡献.
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