Developing buoyant and biocompatible nanoclays for the removal of hydrocarbon pollution from aqueous systems

There is a current need to develop buoyant and biocompatible nanoclays for removing oil pollution from the surface waters of rivers, lakes and oceans. Application of clay-based amendments should either aid dispersion, adsorption or biodegradation of hydrocarbons without introducing additional toxici...

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Bibliographic Details
Published in:Applied clay science 2021-02, Vol.201, p.105917, Article 105917
Main Authors: Warr, L.N., Podlech, C., Kandler, J., Peltz, M.
Format: Article
Language:English
Subjects:
Baltic sea
Brackish water
Clay minerals
Crude oil
Pollution
Remediation
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Summary:There is a current need to develop buoyant and biocompatible nanoclays for removing oil pollution from the surface waters of rivers, lakes and oceans. Application of clay-based amendments should either aid dispersion, adsorption or biodegradation of hydrocarbons without introducing additional toxicity. Ultrathin (< 15 μm thick) nanoclay films of low density, in the form of cm-sized clay flakes, represent promising materials for enhancing all three of these remediating mechanisms. In this experimental microcosm study using brackish Baltic seawater and crude oil (MC252), smectite-talc mineral flakes were tested and compared against smectite-organoclay and smectite based mixtures. All three types of clay flake initially adsorbed significant volumes of oil before sinking with
ISSN:0169-1317
1872-9053
DOI:10.1016/j.clay.2020.105917