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装有α-FeOOH的KOH修饰的竹炭有效吸附水溶液中的铜和化物离子

Wei Yang¹, Lei Zhang², Meng Li³

¹School of Environmental Science and Engineering, Hubei Polytechnic University Huangshi 435003 Hubei China yw198909@163.com.

|October 18, 2023

概括

一种新型吸附剂,FKBC,由改性竹木炭和Goethite制成,有效地从水中去除铜 (Cu2+) 和化物 (F-) 离子. 这种可重复使用的材料对净化水的应用非常有前途.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
吸附科学吸附科学

背景情况:

工业废水通常含有有毒的重金属,如铜 (Cu2+) 和有害的离子,如化物 (F-).
开发高效,具有成本效益的吸附剂,同时去除这些污染物,对于环境保护至关重要.

研究的目的:

为了合成和表征一种新型吸附材料,KOH修饰的竹炭装有戈伊 (FKBC).
调查FKBC对水溶液中的Cu2+和F-离子的吸附性能.
阐明吸附机制并评估FKBC吸附剂的可重复使用性.

主要方法:

竹木炭 (BC) 用KOH制备和修改,然后进行Goethite (α-FeOOH) 的表面沉积,以创建FKBC.
进行了吸附实验,以评估pH值,接触时间,吸附剂剂量和初始度的影响.
描述技术包括SEM-EDS,XRD,N₂吸附-脱附,FTIR和XPS. 这些技术是最重要的. 吸附动力学和异热量分别使用伪二阶和朗迈尔模型进行分析.

主要成果:

FKBC吸附剂对Cu²⁺和F^-离子表现出显著的吸附能力.
吸附性能受到溶液pH值,接触时间,吸附剂剂量和初始离子度的影响.
吸附遵循伪二次动力学和兰木尔异热模型,表明自发和内热过程.
机制涉及离子交换,协调,Cu2+的表面沉,以及F-的离子交换/结合.
在再生后,FKBC表现出良好的选择性和可重复使用性.

结论:

FKBC是一种高效和可再生的吸附剂,用于从水中去除Cu2+和F-+.
该研究提供了对吸附机制的见解,并强调了FKBC在废水处理方面的潜力.

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