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Biodegradation of crude oil saturated fraction supported on clays

Lookup NU author(s): Uzochukwu Ugochukwu Ugochukwu, Professor Ian Head, Professor David Manning, Dr Claire Fialips

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Abstract

The role of clay minerals in crude oil saturated hydrocarbon removal during biodegradation was investigated in aqueous clay/saturated hydrocarbon microcosm experiments with a hydrocarbon degrading microorganism community. The clay minerals used for this study were montmorillonite, palygorskite, saponite and kaolinite. The clay mineral samples were treated with hydrochloric acid and didecyldimethylammonium bromide to produce acid activated- and organoclays respectively which were used in this study. The production of organoclay was restricted to only montmorillonite and saponite because of their relative high CEC. The study indicated that acid activated clays, organoclays and unmodified kaolinite, were inhibitory to biodegradation of the hydrocarbon saturates. Unmodified saponite was neutral to biodegradation of the hydrocarbon saturates. However, unmodified palygorskite and montmorillonite were stimulatory to biodegradation of the hydrocarbon saturated fraction and appears to do so as a result of the clays' ability to provide high surface area for the accumulation of microbes and nutrients such that the nutrients were within the 'vicinity' of the microbes. Adsorption of the saturated hydrocarbons was not significant during biodegradation.


Publication metadata

Author(s): Ugochukwu UC, Jones MD, Head IM, Manning DAC, Fialips CI

Publication type: Article

Publication status: Published

Journal: Biodegradation

Year: 2014

Volume: 25

Issue: 1

Pages: 153-165

Print publication date: 14/05/2013

ISSN (print): 0923-9820

ISSN (electronic): 1572-9729

Publisher: Springer

URL: http://dx.doi.org/10.1007/s10532-013-9647-0

DOI: 10.1007/s10532-013-9647-0


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