Effect of Soil Solution Properties and Cu 2+ Co-Existence on the Adsorption of Sulfadiazine onto Paddy Soil

Ziwen Xu, Shiquan Lv, Shuxiang Hu, Liang Chao, Fangxu Rong, Xin Wang, Mengyang Dong, Kai Liu, Mingyue Li and Aiju Liu
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Ziwen Xu: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 225049, China
Shiquan Lv: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 225049, China
Shuxiang Hu: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 225049, China
Liang Chao: School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, China
Fangxu Rong: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 225049, China
Xin Wang: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 225049, China
Mengyang Dong: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 225049, China
Kai Liu: School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, China
Mingyue Li: School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, China
Aiju Liu: School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, China

IJERPH, 2021, vol. 18, issue 24, 1-12

Abstract: Paddy soils are globally distributed and saturated with water long term, which is different from most terrestrial ecosystems. To better understand the environmental risks of antibiotics in paddy soils, this study chose sulfadiazine (SDZ) as a typical antibiotic. We investigated its adsorption behavior and the influence of soil solution properties, such as pH conditions, dissolved organic carbon (DOC), ionic concentrations (IC), and the co-existence of Cu 2+ . The results indicated that (1) changes in soil solution pH and IC lower the adsorption of SDZ in paddy soils. (2) Increase of DOC facilitated the adsorption of SDZ in paddy soils. (3) Cu 2+ co-existence increased the adsorption of SDZ on organic components, but decreased the adsorption capacity of clay soil for SDZ. (4) Further FTIR and SEM analyses indicated that complexation may not be the only form of Cu 2+ and SDZ co-adsorption in paddy soils. Based on the above results, it can be concluded that soil solution properties and co-existent cations determine the sorption behavior of SDZ in paddy soils.

Keywords: sulfadiazine; Cu 2+ co-existence; paddy soils; adsorption; soil properties (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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