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Biochar impacts on sorption-desorption of oxytetracycline and florfenicol in an alkaline farmland soil as affected by field ageing
He, Yang1,2; Liu, Chen2; Tang, Xiang-Yu2; Xian, Qing-Song2,3; Zhang, Jian-Qiang1; Guan, Zhuo2
Corresponding AuthorTang, Xiang-Yu(xytang@imde.ac.cn)
2019-06-25
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume671Pages:928-936
AbstractFew studies have been conducted to examine the effects of biochar amendment on sorption and desorption of antibiotics in alkaline soils under field ageing conditions. In this study, sorption and desorption of two antibiotics (oxytetracycline (OTC) and florfenicol (FFC)) were investigated for a calcareous farmland soil with different biochar treatments (1 and 5 wt%, including fresh and aged soil-biochar mixtures). The fresh and recovered field-aged biochar particles were characterized by various methods. The results indicated that, after one-year-field-ageing, the abundance of amorphous carbon on biochar surface and the carbon content of biochar particles decreased markedly whereas the surface area and the oxygen-containing functional groups increased. It was found in batch experiments that the effects of biochar application and ageing on sorption and desorption characteristics were apparently different between the two antibiotics. OTC (a more hydrophobic and less polar antibiotic) showed much higher sorption capacity than FFC. Biochar-derived dissolved organic matter (DOM) was found to compete for sorption sites on soil surface, particularly for the 5wt%-freshly-amended soil. The adherent excessive DOM had lowered OTC sorption and enhanced its partitioning to the solution phase. On the other hand, enhanced partitioning of FFC to the amorphous carbon of biochar accounted for the observed increase of its sorption to the soils with fresh biochar amendment. However, the above effects on sorption affinity for both antibiotics weakened after ageing in the studied calcareous purple soil. Thus, due attention should be paid to the potential risk of leaching increase of OTC in alkaline soils upon biochar amendment, particularly within the very beginning period after application. (C) 2019 Elsevier B.V. All rights reserved.
KeywordBiochar Antibiotics Ageing Dissolved organic matter Amorphous carbon Purple soil
DOI10.1016/j.scitotenv.2019.03.414
Indexed BySCI
WOS KeywordORGANIC-MATTER ; VETERINARY PHARMACEUTICALS ; YANGTZE ESTUARY ; SURFACE-WATER ; ANIMAL MANURE ; ANTIBIOTICS ; CARBON ; WASTE ; TETRACYCLINE ; DEGRADATION
Language英语
Funding ProjectNational Natural Science Foundation of China[41471268] ; National Natural Science Foundation of China[41790431] ; National Natural Science Foundation of China[41771521] ; Key Research Program of Frontier Sciences[QYZDJ-SSW-DQC006] ; 135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS[SDS-135-1702]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000466090500095
Funding OrganizationNational Natural Science Foundation of China ; Key Research Program of Frontier Sciences ; 135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS
PublisherELSEVIER SCIENCE BV
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Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/26223
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorTang, Xiang-Yu
Affiliation1.Southwest Jiaotong Univ, Fac Geosci & Environm Engn, Chengdu 611756, Sichuan, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
He, Yang,Liu, Chen,Tang, Xiang-Yu,et al. Biochar impacts on sorption-desorption of oxytetracycline and florfenicol in an alkaline farmland soil as affected by field ageing[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,671:928-936.
APA He, Yang,Liu, Chen,Tang, Xiang-Yu,Xian, Qing-Song,Zhang, Jian-Qiang,&Guan, Zhuo.(2019).Biochar impacts on sorption-desorption of oxytetracycline and florfenicol in an alkaline farmland soil as affected by field ageing.SCIENCE OF THE TOTAL ENVIRONMENT,671,928-936.
MLA He, Yang,et al."Biochar impacts on sorption-desorption of oxytetracycline and florfenicol in an alkaline farmland soil as affected by field ageing".SCIENCE OF THE TOTAL ENVIRONMENT 671(2019):928-936.
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