{"title":"Adsorption retention of spiramycin in agricultural calcareous loess soils: Assessing the impact of influential factors and mechanisms","authors":"Zhewei Liu, Yufeng Jiang, Rui He, Jiali Wu, Xiaozhen Zhang, Kui Huang, Yingqin Wu","doi":"10.1007/s11270-024-07312-0","DOIUrl":null,"url":null,"abstract":"<p>The adsorption retention of different antibiotics and the physical and chemical properties of soil can vary significantly, leading to differences in their retention ability in soil environments. To investigate the adsorption retention characteristics and transfer risk, as well as influential factors of spiramycin (SPI) in three different agricultural calcareous loess soils, which were studied by means of batch equilibrium method. The results show that the adsorption kinetics data can be well described by the pseudo-second-order model, and the sorption isotherms can be described by the Freundlich model. These model parameters indicate that soil organic matter (SOM) and cation exchange capacity (CEC) play a key role in the adsorption retention of SPI, while soil clay content and pH also exert some influence. Furthermore, the desorption amounts of SPI were consistently less than 35%, showing a high degree of irreversibility and a clear desorption hysteresis, making it prone to remaining retention in the soil. The adsorption amount changed little of pH value from 3 to 7. At a pH value of 7, adsorption is promoted by cation bridging between soil and SPI, and the existence of electrostatic attraction. The adsorption amount decreased when the pH value exceeded 7 dues to electrostatic repulsion. Compared with K<sup>+</sup> and NH<sup>4+</sup>, the presence of high valence ions such as Ca<sup>2+</sup>, Mg<sup>2+</sup> and ions with higher concentration has a significant inhibitory effect on adsorption. The FTIR spectral analysis of the adsorbents revealed that the adsorption retention was mainly governed by cation exchange, hydrogen bonding, and surface complexation. This study provides a scientific basis for assessing the retention ability and transfer risk of typical veterinary antibiotics in the soil environment.</p>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":null,"pages":null},"PeriodicalIF":3.8000,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water, Air, & Soil Pollution","FirstCategoryId":"6","ListUrlMain":"https://doi.org/10.1007/s11270-024-07312-0","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
The adsorption retention of different antibiotics and the physical and chemical properties of soil can vary significantly, leading to differences in their retention ability in soil environments. To investigate the adsorption retention characteristics and transfer risk, as well as influential factors of spiramycin (SPI) in three different agricultural calcareous loess soils, which were studied by means of batch equilibrium method. The results show that the adsorption kinetics data can be well described by the pseudo-second-order model, and the sorption isotherms can be described by the Freundlich model. These model parameters indicate that soil organic matter (SOM) and cation exchange capacity (CEC) play a key role in the adsorption retention of SPI, while soil clay content and pH also exert some influence. Furthermore, the desorption amounts of SPI were consistently less than 35%, showing a high degree of irreversibility and a clear desorption hysteresis, making it prone to remaining retention in the soil. The adsorption amount changed little of pH value from 3 to 7. At a pH value of 7, adsorption is promoted by cation bridging between soil and SPI, and the existence of electrostatic attraction. The adsorption amount decreased when the pH value exceeded 7 dues to electrostatic repulsion. Compared with K+ and NH4+, the presence of high valence ions such as Ca2+, Mg2+ and ions with higher concentration has a significant inhibitory effect on adsorption. The FTIR spectral analysis of the adsorbents revealed that the adsorption retention was mainly governed by cation exchange, hydrogen bonding, and surface complexation. This study provides a scientific basis for assessing the retention ability and transfer risk of typical veterinary antibiotics in the soil environment.
期刊介绍:
Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments.
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Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.