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Effect of extracellular polymeric substance components on the sorption behavior of 2,2′,4,4′-tetrabromodiphenyl ether to soils: Kinetics and isotherms.

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Title: Effect of extracellular polymeric substance components on the sorption behavior of 2,2′,4,4′-tetrabromodiphenyl ether to soils: Kinetics and isotherms.
Authors: Liu, Guangxia1,2, Bian, Yongrong1, Jia, Mingyun1, Boughner, Lisa A.3, Gu, Chenggang1, Song, Yang1, Sheng, Hongjie1,2, Zhao, Wei4, Jiang, Xin1, Wang, Fang1,2 wangfang@issas.ac.cn
Source: Science of the Total Environment. Dec2017, Vol. 609, p144-152. 9p.
Subjects: Soil microbiology, Microbial polymers, Persistent pollutants, Atmospheric temperature, Phenyl ethers, Soil absorption & adsorption
Abstract: Microbial extracellular polymeric substances (EPS) and persistent organic pollutants (POPs) commonly exist in the soil environment. Currently, there is a knowledge gap regarding the effect of EPS on the fate of POPs in soil. In the present study, 2,2′,4,4′-tetrabromodiphenyl ether (BDE-47) was used as a model compound to investigate the effects of bovine serum albumin (BSA) and sodium alginate (SA) - mimicking the main components of EPS - on sorption of POPs to soils, through batch experiments. Irrespective of the concentration of BSA: the addition of BSA did enhance the sorption capacity of BDE-47 to soils, due to generation of more sorption sites. For SA, it increased the sorption capacity of BDE-47 at low BDE-47 concentrations, while the presence of SA negatively affected sorption of BDE-47 at high BDE-47 concentrations. The partition effect dominates the sorption of BDE-47 to soils, but after adding either BSA or SA, the sorption of BDE-47 to soils is dominated by surface sorption. Film diffusion and intra-particle diffusion were also involved in the sorption process with and without BSA or SA, with the latter being the rate-limiting step. The heterogeneous surface and nonlinear sorption behavior of BDE-47 to soils increased in the presence of either BSA or SA. The FTIR spectra indicated that the aromatic C C, H-bonds and OH groups may be involved in the sorption process. Therefore, BSA enhanced the retention of BDE-47 to soil, while SA's influence on BDE-47 sorption to soil depended on the concentration of BDE-47. [ABSTRACT FROM AUTHOR]
Copyright of Science of the Total Environment is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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  Data: Effect of extracellular polymeric substance components on the sorption behavior of 2,2′,4,4′-tetrabromodiphenyl ether to soils: Kinetics and isotherms.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Guangxia%22">Liu, Guangxia</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Bian%2C+Yongrong%22">Bian, Yongrong</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Jia%2C+Mingyun%22">Jia, Mingyun</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Boughner%2C+Lisa+A%2E%22">Boughner, Lisa A.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Gu%2C+Chenggang%22">Gu, Chenggang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Song%2C+Yang%22">Song, Yang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Sheng%2C+Hongjie%22">Sheng, Hongjie</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhao%2C+Wei%22">Zhao, Wei</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Jiang%2C+Xin%22">Jiang, Xin</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Wang%2C+Fang%22">Wang, Fang</searchLink><relatesTo>1,2</relatesTo><i> wangfang@issas.ac.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Science+of+the+Total+Environment%22">Science of the Total Environment</searchLink>. Dec2017, Vol. 609, p144-152. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Soil+microbiology%22">Soil microbiology</searchLink><br /><searchLink fieldCode="DE" term="%22Microbial+polymers%22">Microbial polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Persistent+pollutants%22">Persistent pollutants</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+temperature%22">Atmospheric temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Phenyl+ethers%22">Phenyl ethers</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+absorption+%26+adsorption%22">Soil absorption & adsorption</searchLink>
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  Label: Abstract
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  Data: Microbial extracellular polymeric substances (EPS) and persistent organic pollutants (POPs) commonly exist in the soil environment. Currently, there is a knowledge gap regarding the effect of EPS on the fate of POPs in soil. In the present study, 2,2′,4,4′-tetrabromodiphenyl ether (BDE-47) was used as a model compound to investigate the effects of bovine serum albumin (BSA) and sodium alginate (SA) - mimicking the main components of EPS - on sorption of POPs to soils, through batch experiments. Irrespective of the concentration of BSA: the addition of BSA did enhance the sorption capacity of BDE-47 to soils, due to generation of more sorption sites. For SA, it increased the sorption capacity of BDE-47 at low BDE-47 concentrations, while the presence of SA negatively affected sorption of BDE-47 at high BDE-47 concentrations. The partition effect dominates the sorption of BDE-47 to soils, but after adding either BSA or SA, the sorption of BDE-47 to soils is dominated by surface sorption. Film diffusion and intra-particle diffusion were also involved in the sorption process with and without BSA or SA, with the latter being the rate-limiting step. The heterogeneous surface and nonlinear sorption behavior of BDE-47 to soils increased in the presence of either BSA or SA. The FTIR spectra indicated that the aromatic C C, H-bonds and OH groups may be involved in the sorption process. Therefore, BSA enhanced the retention of BDE-47 to soil, while SA's influence on BDE-47 sorption to soil depended on the concentration of BDE-47. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Science of the Total Environment is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.scitotenv.2017.07.089
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      – Code: eng
        Text: English
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        PageCount: 9
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      – SubjectFull: Soil microbiology
        Type: general
      – SubjectFull: Microbial polymers
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      – SubjectFull: Persistent pollutants
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      – SubjectFull: Phenyl ethers
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      – TitleFull: Effect of extracellular polymeric substance components on the sorption behavior of 2,2′,4,4′-tetrabromodiphenyl ether to soils: Kinetics and isotherms.
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              Text: Dec2017
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