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Molding of Molecular Sieve Residues and Their Application in Cleaning Oily Wastewater

  • Zilu Jin
  • Yuqing ZhangEmail author
  • Song Wei
  • Shuai Sun
Research Article
  • 14 Downloads

Abstract

To deeply clean oily wastewater, molecular sieve residues (MSRs) were sufficiently recycled and utilized due to their high specific surface area, porous structure, and outstanding adsorption property. Molding MSRs (MMSRs) were prepared by adding additives (starch, citric acid, and soluble glass) to MSRs and were then filled into a fixed bed for adsorbing and separating the oil in wastewater. Sodium dodecylbenzenesulfonate was used to modify the MMSRs, and their adsorption property was also investigated. In addition, the MSRs were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, Brunauer–Emmett–Teller analysis, and Fourier transform infrared spectroscopy. The results indicated that MMSRs satisfied the filling requirement of fixed bed, and their dynamic adsorption capacity could reach 0.1854 mg g−1. Furthermore, the static adsorption capacity of MMSRs achieved 1.7346 mg g−1 in the optimum conditions, and the oil adsorption performance of modified MMSRs was further enhanced. Therefore, this work suggests that MSRs are promising alternatives in cleaning oily wastewater.

Keywords

Molecular sieve residues Molding Oily wastewater Adsorption Cleaning 

Abbreviations

MSRs

Molecular sieve residues

MMSRs

Molding molecular sieve residues

SDBS

Sodium dodecylbenzenesulfonate

Notes

Acknowledgements

This project is supported by the National Natural Science Foundation of China (No. 21676180 and No. 21076143), the Key Technologies R&D Program of Tianjin (No. 15ZCZDSF00160), and Tianjin Municipal Science and Technology Xinghai Program (No. KJXH2014-05).

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Copyright information

© Tianjin University and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Chemical Engineering and TechnologyTianjin UniversityTianjinChina

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