干旱区研究

Arid Zone Research >

2018 , Vol. 35 >Issue 5: 1084 - 1090

DOI: https://doi.org/10.13866/j.azr.2018.05.10

Soil and Soil Remediation

Effects of Salinity and pH Value on Adsorption of Dibutyl Phthalate in Mulching Farmland Soil to Nanomaterial Adsorbent

  • LIU Shuai ,
  • PAN Xiang-liang
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  • 1. Xinjiang Key Laboratory of Environmental Pollution and Bioremediation,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,Xinjiang,China;
    2. University of Chinese Academy of Sciences,Beijing 100049,China;
    3. College of Environment,Zhejiang University of Technology,Hangzhou 310014,Zhejiang,China

Received date: 2018-04-01

  Revised date: 2018-04-16

  Online published: 2025-11-18

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Abstract

Plastic film mulching is the most intensively applied in agricultural production in Xinjiang Uygur Autonomous Region,but a serious phthalate pollution is caused in farmland soil and lake or river sediments.Application of the traditional bioremediation technologies is strongly challenged in this area due to the extremely arid climate.It is urgent to develop the remediation technologies and materials suitable in arid region.In this study,three kinds of nanoparticles (BN,SiO2 and Fe3O4) were modified to be as the hydrophobic material surface by polymerization of dopamine based on considering the strong hydrophobicity of materials with a strong adsorption capacity for phthalate.The materials were characterized by SEM-EDS,ATR-FTIR spectroscopy and Raman spectroscopy.The results showed that the adsorbent has an excellent adsorption capacity for dibutyl phthalate,the equilibrium adsorption capacity could be as high as 218.63 mg·g-1,and an equilibrium could be achieved within 220 minutes.The adsorption kinetics follows the pseudo-second order kinetic equation.Both the Langmuir and Freundlich models could be used to satisfactorily describe the kinetics.A strong dibutyl phthalate adsorption capability could be maintained under pH value range from 2 to 12 and at a salinity of 40 g·L-1.This nanomaterial adsorbent has a great potential in remediation of phthalate pollution of farmland soil and lake or river sediments.

Key words： field film pollution; soil; water; phthalate; hydrophobicity; nanoparticle; adsorption; Xinjiang

Cite this article

LIU Shuai , PAN Xiang-liang . Effects of Salinity and pH Value on Adsorption of Dibutyl Phthalate in Mulching Farmland Soil to Nanomaterial Adsorbent[J]. Arid Zone Research, 2018 , 35(5) : 1084 -1090 . DOI: 10.13866/j.azr.2018.05.10

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