通过基托从水溶液中有效地去除 (Cd2+) 分支生物炭:吸附性能和增强复合
Fan Xiao1, Dongming Su1, Yanfang Ren1
1School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
Langmuir : the ACS journal of surfaces and colloids
|February 7, 2025
概括
基托改性无花果枝生物炭 (CMFBB) 显著增强了从水中去除 (Cd2+). 这种新型吸附剂显示出高容量和优良的再生能力,为处理重金属污染提供了一个有前途的解决方案.
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 化学 化学
背景情况:
- (Cd2+) 是一种在水溶液中发现的有毒重金属污染物.
- 来自无花果树枝 (FBB) 的生物炭具有吸附的潜力,但需要修改.
- 素修饰可以增强生物炭的吸附性质.
研究的目的:
- 开发和表征素修饰的无花果枝生物炭 (CMFBB) 以改善Cd2+吸附.
- 在各种条件下研究CMFBB的吸附性能.
- 阐明CMFBB的吸附机制和再生能力.
主要方法:
- 使用DTG-TGA,BET,SEM-EDS,FTIR和XRD等技术进行CMFBB的表征.
- 吸附实验不同剂量,pH值,度,温度,反应时间和并存的阴离子.
- 在多个循环中分析吸附动力学,异热和再生效率.
主要成果:
- 在优化条件下,CMFBB的Cd2+吸附能力为62.25mgg-1的CMFBB,比FBB增加78.26%.
- 吸附跟随伪二阶动力学和兰格穆尔等温,表明单层化学吸附.
- CMFBB表现出优异的再生能力 (92.3%的效率在5个周期后) 和对Cd2+的高选择性.
结论:
- CMFBB是一种高效的吸附剂,可从污染水中去除Cd2+.
- 主要吸附机制包括复杂化和沉.
- 由于其效率和可重复使用性,CMFBB显示出在废水处理中实际应用的巨大潜力.
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