Synthesis of manganese-iron oxides/activated carbon as a highly effective adsorbent for sulfamerazine pollutant removal

Considering the frequent detection in environment and the potential threat to human health and ecoenvironment, achieving removal of sulfamerazine (SMZ) from the aquatic environment is of great significance. In this study, the magnetically separable manganese-iron oxides/activated carbon (Mn-Fe 3 O 4...

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Bibliographic Details
Published inThe Korean journal of chemical engineering Vol. 39; no. 11; pp. 3083 - 3091
Main Authors Zhu, Wenxiu, Liu, Xinghao, Yang, Zhaoguang, Li, Haipu
Format Journal Article
LanguageEnglish
Published New York Springer US 01.11.2022
Springer Nature B.V
한국화학공학회
Subjects
Activated carbon
Adsorption
Aquatic environment
Biotechnology
Catalysis
Chemical precipitation
Chemistry
Chemistry and Materials Science
Hydrogen bonds
Industrial Chemistry/Chemical Engineering
Iron oxides
Manganese
Materials Science
Oxidation
Pollutants
Redox reactions
Separation Technology
Thermodynamics
화학공학
SMZ
AC
Doping Manganese
Adsorption Mechanism
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Summary:Considering the frequent detection in environment and the potential threat to human health and ecoenvironment, achieving removal of sulfamerazine (SMZ) from the aquatic environment is of great significance. In this study, the magnetically separable manganese-iron oxides/activated carbon (Mn-Fe 3 O 4 /AC) was synthesized by simple co-precipitation method and was used to remove SMZ from solution. Doping manganese oxide could change the specific surface areas of the prepared materials, thus providing more active sites for adsorption and improving the adsorption capacity of Mn-Fe 3 O 4 /AC for SMZ (maximum adsorption capacity 146 mg g −1 ). The kinetic and thermodynamic study showed that the adsorption of SMZ on Mn-Fe 3 O 4 /AC was endothermic and spontaneous, and followed the pseudo-second-order kinetics model and Langmuir model. Efficient removal of SMZ was attributed to varieties of non-covalent interactions between it and Mn-Fe 3 O 4 /AC, including electrostatic interactions, hydrogen bonds and π-π electron donor-acceptor interactions. In addition, SMZ could be degraded by oxidation via redox reactions. After six cycles of use, Mn-Fe 3 O 4 /AC still had good adsorption capability.
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-022-1147-7