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Activation of peroxydisulfate by nanoscale zero-valent iron for sulfamethoxazole removal in agricultural soil: Effect, mechanism and ecotoxicity.
Chemosphere. 2019 May; 223:196-203.C

Abstract

In this study, peroxydisulfate (PDS) was successfully activated by nanoscale zero-valent iron (nZVI) for the degradation of sulfamethoxazole (SMX, antibiotic frequently detected in the environment) in agricultural soils. The results indicated that the degradation of SMX was affected by the nZVI dose, the ratio of SMX/PDS, the ratio of soil/water and reaction temperature, and in cinnamon soils 87.6% of SMX degradation can be achieved within 4 h at 30 °C when the initial nZVI dose was 0.03 g g-1 soil, the molar ratio of SMX/PDS = 1/75 and the soil/water = 1/1. The results of radical scavenger experiments and electron spin resonance (ESR) tests showed that hydroxyl radical (OH) was the dominant reactive species in this system. The ecotoxicity tests of the soil by germination test, luminescent bacteria experiment and enzyme activity test indicated that the ecotoxicity of soil after treatment was obviously lower than the contaminated soil. In addition, there was almost no effect on plant growth when compared with original soil. Furthermore, this system exhibited a great degradation capacity for SMX in different types of agricultural soils, and the degradation efficiencies of SMX in other four soils were 90.6% (yellow brown earths), 80.8% (brown earths), 86.5% (black soils) and 96.1% (red earths), respectively. This work provides an optional method for agricultural soil pollution control.

Authors+Show Affiliations

State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China; Development Research Center of the Ministry of Water Resources of P.R. China, Beijing 100038, China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China. Electronic address: liuxt@bnu.edu.cn.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30780030

Citation

Zhou, Zhou, et al. "Activation of Peroxydisulfate By Nanoscale Zero-valent Iron for Sulfamethoxazole Removal in Agricultural Soil: Effect, Mechanism and Ecotoxicity." Chemosphere, vol. 223, 2019, pp. 196-203.
Zhou Z, Ma J, Liu X, et al. Activation of peroxydisulfate by nanoscale zero-valent iron for sulfamethoxazole removal in agricultural soil: Effect, mechanism and ecotoxicity. Chemosphere. 2019;223:196-203.
Zhou, Z., Ma, J., Liu, X., Lin, C., Sun, K., Zhang, H., Li, X., & Fan, G. (2019). Activation of peroxydisulfate by nanoscale zero-valent iron for sulfamethoxazole removal in agricultural soil: Effect, mechanism and ecotoxicity. Chemosphere, 223, 196-203. https://doi.org/10.1016/j.chemosphere.2019.02.074
Zhou Z, et al. Activation of Peroxydisulfate By Nanoscale Zero-valent Iron for Sulfamethoxazole Removal in Agricultural Soil: Effect, Mechanism and Ecotoxicity. Chemosphere. 2019;223:196-203. PubMed PMID: 30780030.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Activation of peroxydisulfate by nanoscale zero-valent iron for sulfamethoxazole removal in agricultural soil: Effect, mechanism and ecotoxicity. AU - Zhou,Zhou, AU - Ma,Jun, AU - Liu,Xitao, AU - Lin,Chunye, AU - Sun,Ke, AU - Zhang,Huijuan, AU - Li,Xiaowan, AU - Fan,Guoxuan, Y1 - 2019/02/13/ PY - 2018/05/03/received PY - 2019/02/09/revised PY - 2019/02/12/accepted PY - 2019/2/20/pubmed PY - 2019/5/10/medline PY - 2019/2/20/entrez KW - Agricultural soil KW - Ecotoxicity tests KW - Nanoscale zero-valent iron (nZVI) KW - Peroxydisulfate (PDS) KW - Sulfamethoxazole (SMX) SP - 196 EP - 203 JF - Chemosphere JO - Chemosphere VL - 223 N2 - In this study, peroxydisulfate (PDS) was successfully activated by nanoscale zero-valent iron (nZVI) for the degradation of sulfamethoxazole (SMX, antibiotic frequently detected in the environment) in agricultural soils. The results indicated that the degradation of SMX was affected by the nZVI dose, the ratio of SMX/PDS, the ratio of soil/water and reaction temperature, and in cinnamon soils 87.6% of SMX degradation can be achieved within 4 h at 30 °C when the initial nZVI dose was 0.03 g g-1 soil, the molar ratio of SMX/PDS = 1/75 and the soil/water = 1/1. The results of radical scavenger experiments and electron spin resonance (ESR) tests showed that hydroxyl radical (OH) was the dominant reactive species in this system. The ecotoxicity tests of the soil by germination test, luminescent bacteria experiment and enzyme activity test indicated that the ecotoxicity of soil after treatment was obviously lower than the contaminated soil. In addition, there was almost no effect on plant growth when compared with original soil. Furthermore, this system exhibited a great degradation capacity for SMX in different types of agricultural soils, and the degradation efficiencies of SMX in other four soils were 90.6% (yellow brown earths), 80.8% (brown earths), 86.5% (black soils) and 96.1% (red earths), respectively. This work provides an optional method for agricultural soil pollution control. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/30780030/Activation_of_peroxydisulfate_by_nanoscale_zero_valent_iron_for_sulfamethoxazole_removal_in_agricultural_soil:_Effect_mechanism_and_ecotoxicity_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(19)30290-5 DB - PRIME DP - Unbound Medicine ER -