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从水溶液中去除铅（II）离子至由废弃生物质衍生的活性炭上。

Removal of lead (II) ions from aqueous solutions onto activated carbon derived from waste biomass.

作者信息

Erdem Murat, Ucar Suat, Karagöz Selhan, Tay Turgay

机构信息

Department of Chemistry, Faculty of Science, Anadolu University, 26470 Eskisehir, Turkey.

出版信息

ScientificWorldJournal. 2013 Jun 18;2013:146092. doi: 10.1155/2013/146092. Print 2013.

DOI:10.1155/2013/146092
PMID:23853528
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3703723/
Abstract

The removal of lead (II) ions from aqueous solutions was carried out using an activated carbon prepared from a waste biomass. The effects of various parameters such as pH, contact time, initial concentration of lead (II) ions, and temperature on the adsorption process were investigated. Energy Dispersive X-Ray Spectroscopy (EDS) analysis after adsorption reveals the accumulation of lead (II) ions onto activated carbon. The Langmuir and Freundlich isotherm models were applied to analyze equilibrium data. The maximum monolayer adsorption capacity of activated carbon was found to be 476.2 mg g⁻¹. The kinetic data were evaluated and the pseudo-second-order equation provided the best correlation. Thermodynamic parameters suggest that the adsorption process is endothermic and spontaneous.

摘要

使用由废弃生物质制备的活性炭从水溶液中去除铅（II）离子。研究了诸如pH值、接触时间、铅（II）离子初始浓度和温度等各种参数对吸附过程的影响。吸附后的能量色散X射线光谱（EDS）分析表明铅（II）离子在活性炭上的积累。应用朗缪尔和弗伦德里希等温线模型分析平衡数据。发现活性炭的最大单层吸附容量为476.2 mg g⁻¹。对动力学数据进行了评估，伪二级方程提供了最佳相关性。热力学参数表明吸附过程是吸热的且自发的。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3deb/3703723/3f06a92f67a0/TSWJ2013-146092.007.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3deb/3703723/3f06a92f67a0/TSWJ2013-146092.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3deb/3703723/63a2088bbbd1/TSWJ2013-146092.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3deb/3703723/2ae41398380a/TSWJ2013-146092.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3deb/3703723/13c4b4a1bfca/TSWJ2013-146092.003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3deb/3703723/fe595423e379/TSWJ2013-146092.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3deb/3703723/3f06a92f67a0/TSWJ2013-146092.007.jpg

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