关于制备基于素的活性炭和醇吸附性能的实验研究
Ping Cao1, Yuting Li1, Jingli Shao2
1School of Chemistry and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China.
ACS omega
|June 17, 2024
概括
这项研究从生物质废物中开发了活性碳,如子和素,以有效地从废水中去除. 基于素的再生活性炭保持了高吸附性能,提供了可持续的解决方案.
科学领域:
- 环境科学 环境科学
- 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.
背景情况:
- 工业化产生了大量的生物质废物和污染的废水,需要有效的处理和利用.
- 活性炭 (AC) 是废水处理的关键材料,但需要可持续的生产方法.
研究的目的:
- 开发一种创新的方法,用于生物质废物和含废水的协作处理.
- 用于从子中产生活性炭和素以去除.
- 为了比较AC生产的物理 (蒸汽) 和化学 (K2CO3) 激活方法.
主要方法:
- 生物质废物 (子,素) 通过蒸汽激活和K2CO3化学激活转化为活性炭.
- 用布鲁纳瓦-埃梅特-泰勒 (BET) 表面积和富里埃变换红外光谱法 (FTIR) 来进行表征.
- 评估了去除效率和吸附动力学 (伪第一阶模型).
- 评估了活性炭的回收和再生特性.
主要成果:
- 蒸汽激活产生了子AC,其BET表面积在800°C时为1065m2/g.
- 通过K2CO3的激活,产生了具有在800°C时1723.8m2/g的优异BET表面积的素AC,增强了含氧的功能组.
- 子AC和红素AC实现了高的醇去除效率,分别为96.87%和98.22%.
- 伪第一阶模型准确地描述了醇吸附动力学.
- 再生的红素AC证明了持续的高吸附性能.
结论:
- 从生物质废物中提取的活性炭,特别是用K2CO3激活的木质素,对于从废水中去除是非常有效的.
- 开发的方法提供了一种可持续的方法来管理工业废物流.
- 电流的可回收性确保了其在废水处理应用中的长期可行性.
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