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通过银浸活性炭增强PFBS吸附:机械洞察和热力学分析

Seyed Javad Amirfakhri¹, Ben Zobel¹, Michael Karsten Lilla¹

¹Department of Paper Science and Chemical Engineering, University of Wisconsin Stevens Point, 2001 Fourth Avenue, SCI D274, Stevens Point, WI, 54481, USA.

|March 4, 2025

概括

银纳米粒子浸显著提高了活性炭去除 perfluorobutane 硫酸 (PFBS) 的能力. 这种增强的吸附剂显示了PFBS从水中去除的改善动力学和热力学.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

perfluorobutane硫酸 (PFBS) 是一种持续性环境污染物.
传统的活性炭 (AC) 在有效去除PFBS方面存在局限性.
开发新型吸附剂对于减轻PFBS污染至关重要.

研究的目的:

为了研究银纳米粒子 (AgNP) 浸对 PFBS 吸附的 AC 的影响.
为了合成和表征银浸活性碳 (SIAC) 材料.
评估SIAC用于PFBS去除的吸附性能,动力学和热力学.

主要方法:

使用沉积-沉方法合成具有不同银含量的SIAC吸附剂 (SIAC0.01,SIAC0.1,SIAC1).
吸附实验以确定PFBS在不同温度 (25,35,45°C) 的吸收能力.
动力学和热力学分析以了解吸附机制和有利性.

主要成果:

SIAC0.1 (1.7 wt% Ag) 在25°C时表现出最高的PFBS吸附能力.
银纳米粒子浸显著提高了吸附动力学和热力学有利性.
评估了关键的动力参数和热力学特性 (ΔH≠, ΔS≠, ΔG≠),表明吸附效率有所提高.

结论:

浸银的活性炭是一种高效的吸附剂,用于PFBS的去除.
增强的性能归因于改进的动力学和热力学性能.
SIAC提出了一种有希望的解决方案,用于解决水处理中的PFBS污染问题.

关键词:

吸附动力学吸附动力学扩散化学吸收-扩散化学吸收在PFAS中,有很多方法.删除PFBS的方法用银浸的活性碳.热力学是一种热力学.

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