Study on the adsorption characteristics of methylene blue by soft manganese ore-oil sludge-based activated carbon

被引：0

作者：

Fan X. ^{[1
]}

Yang Y. ^{[1
]}

Guo X. ^{[1
]}

Zhang Q. ^{[1
]}

机构：

[1] College of Resources and Environment, Chengdu University of Information Technology, Sichuan, Chengdu

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2022年 / 41卷 / 12期

关键词：

adsorption; adsorption mechanism; methylene blue; moving-window 2D-correlation spectroscopy (COS); oil-bearing sludge;

D O I：

10.16085/j.issn.1000-6613.2022-0304

中图分类号：

学科分类号：

摘要：

Activated carbon was prepared from oily sludge and pyrolusite, which was used to adsorb methylene blue in water, and its adsorption performance and mechanism were explored. SEM, BET, XPS and FTIR were used to characterize the micro-morphology and phase structure of activated carbon. Two-dimensional correlation spectroscopy (2D-COS) in combination with FITR was used to explore the adsorption point and mechanism of activated carbon and methylene blue. The results showed that activated carbon was a mesoporous material with a specific surface area of 464.4m2/g, which contained a large number of oxygen-containing functional groups. The adsorption process of methylene blue by activated carbon, which was monolayer adsorption controlled by chemical adsorption, accorded with pseudo-second-order kinetic equation and Langmuir model. Combined with the results of FTIR and moving-window 2D-COS analysis, more functional groups participated in the adsorption process of methylene blue with lower concentrations, in which contain oxygen was dominant. The π-π interaction played a primary role in higher concentrations of methylene blue. The adsorption mechanism included hydrogen bonding, oxygen-containing functional groups and π-π interaction. © 2022 Chemical Industry Press. All rights reserved.

引用

页码：6664 / 6671

页数：7

共 25 条

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