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Effect of bio-based surfactant on wettability of low-rank coal surface and its mechanism

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Abstract

In this study, the effect of a bio-based environment-friendly surfactant, cardanol polyoxyethylene ether (BGF), on the wettability of the surface of low-rank coal (LRC) and its mechanism were studied. The adsorption experiment showed that the adsorption of the surfactant conformed to the Langmuir adsorption model and the pseudo-second-order kinetic model. The adsorption was mainly affected by hydrogen bonding, and the adsorption rate was affected by intraparticle diffusion and liquid film diffusion. The wettability experiment showed that the influence of BGF on the wettability of the surface of LRC followed the given order: BGF-7 > BGF-10 > BGF-15. The investigation of adhesion work showed that the adhesion work and the stability of the coal–water system decreased after adsorption. Fourier transform infrared and X-ray photoelectron spectroscopy analyses showed that after adsorption, the peak strength of vinyl ether, the content of elemental carbon, and the content of C–C/C–H groups increased.

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The data that support the findings of this study are available from the corresponding author upon reasonable request.

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Funding

This work was supported by the National Natural Science Foundation of China (Grant No. 51904174, 52074175), the Shandong Provincial Natural Science Foundation (Grant No. ZR2020ME103), the Young Science and Technology Innovation Program of Shandong Province (Grant No. 2020KJD001), the Key Research and Development Project of Shandong (Grant No. 2019GGX103035), the Postdoctoral Science Foundation of China (Grant No. 2019M662403), the SDUST Research Fund (Grant No. 2018TDJH101), the Natural Science Foundation of Shandong Province (Grant No. ZR2019BEE075), the Scientific Research Foundation of Shandong University of Science and Technology for Recruited Talents (Grant No. 2019RCJJ007), and the Project of Shandong Province Higher Educational Young Innovative Talent Introduction and Cultivation Team.

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Authors and Affiliations

  1. State Key Laboratory of Coal Resources in Western China, Xi’an University of Science and Technology, Xi’an 710600, China

    Lin Li

  2. Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, XuzhouJiangsu, 221116, China

    Xiaofang You

  3. College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, 266590, China

    Lin Li, Mingpu Liu, Jianqiao Lyu, Xiaoteng Li, Zhihao Li, Mengyu Lin, Chuandong Ma, Meng He, Hao Yu & Xiaofang You

  4. National Engineering Laboratory for Coalmine Backfilling Mining, Shandong University of Science and Technology, Tai’an, 271019, Shandong, China

    Qingbiao Wang

Authors
  1. Lin Li
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  2. Mingpu Liu
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  3. Jianqiao Lyu
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  4. Xiaoteng Li
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  5. Zhihao Li
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  9. Qingbiao Wang
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  10. Hao Yu
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  11. Xiaofang You
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Contributions

LL: conceptualization, methodology, writing—reviewing and editing; ML: data curation, writing—original draft preparation; JL: investigation, visualization; XL: investigation, visualization; ZL: investigation, visualization; ML: investigation, visualization; CM: investigation, visualization; MH: investigation, visualization; QW: investigation, visualization; YH: oversight and leadership responsibility for the research activity planning and execution; XY: acquisition of the financial support for the project leading to this publication.

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Correspondence to Xiaofang You.

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Communicated by Philippe Garrigues.

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Li, L., Liu, M., Lyu, J. et al. Effect of bio-based surfactant on wettability of low-rank coal surface and its mechanism. Environ Sci Pollut Res 29, 39610–39621 (2022). https://doi.org/10.1007/s11356-022-18714-0

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  • DOI: https://doi.org/10.1007/s11356-022-18714-0

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