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    Solar-Assisted Fast Cleanup of Heavy Oil Spill by a Photothermal Sponge

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    Type
    Article
    Authors
    Chang, Jian
    Shi, Yusuf
    Wu, Mengchun cc
    Li, Renyuan cc
    Shi, Le cc
    Jin, Yong cc
    Qing, Weihua
    Tang, Chuyang
    Wang, Peng cc
    KAUST Department
    Water Desalination and Reuse Research Center (WDRC)
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Date
    2018
    Permanent link to this record
    http://hdl.handle.net/10754/627610
    
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    Abstract
    Rapid cleanup of heavy oil spill is always considered as a great challenge because the conventional porous oil sorbents cannot efficiently remove them due to the high viscosity of the oil (>1000 mPa·s). In this work, we take advantage of the photothermal effect to heating the heavy oil by using sunlight as energy source to significantly reduce the viscosity of the heavy oil and thus to achieve a fast heavy oil cleanup. A carbon nanotube (CNT) modified polyurethane sponge was fabricated as photothermal sorbent that exhibited superhydrophobicity, superoleophilicity, as well as outstanding absorption capacity of heavy oil. Thanks to the excellent photothermal effect of CNTs, the modified sponge achieved nearly full sunlight absorption (99%). The resulting solar heating effectively reduced the viscosity of the heavy oil, which enabled the modified sponge to quickly absorb heavy oil of 20 times its own weight under sun illumination. This solar-assisted heavy oil sorbent design is promising for future remediation of viscous oil-spills.
    Citation
    Chang J, Shi Y, Wu M, Li R, Shi L, et al. (2018) Solar-Assisted Fast Cleanup of Heavy Oil Spill by a Photothermal Sponge. Journal of Materials Chemistry A. Available: http://dx.doi.org/10.1039/c8ta00779a.
    Sponsors
    This work was supported by the King Abdullah University of Science and Technology (KAUST) center competitive fund (CCF) fund awarded to Water Desalination and Reuse Center (WDRC) and WDRC CFP awarded to The University of Hong Kong.
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Journal of Materials Chemistry A
    DOI
    10.1039/c8ta00779a
    Additional Links
    http://pubs.rsc.org/en/Content/ArticleLanding/2018/TA/C8TA00779A#!divAbstract
    ae974a485f413a2113503eed53cd6c53
    10.1039/c8ta00779a
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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