Impact of activated carbon on the catabolism of (14)C-phenanthrene in soil

Oyelami, Ayodeji O. and Ogbonnaya, Uchenna and Muotoh, Chitom and Semple, Kirk T. (2015) Impact of activated carbon on the catabolism of (14)C-phenanthrene in soil. Environmental Science: Processes and Impacts, 17 (6). pp. 1173-1181. ISSN 2050-7887

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Abstract

Activated carbon amendment to contaminated soil has been proposed as an alternative remediation strategy to the management of persistent organic pollutant in soils and sediments. The impact of varying concentrations (0%, 0.01%, 0.1% and 1.0%) of different types of AC on the development of phenanthrene catabolism in soil was investigated. Mineralisation of (14)C-phenanthrene was measured using respirometric assays. The increase in concentration of CB4, AQ5000 or CP1 in soil led to an increase in the length of the lag phases. Statistical analyses showed that the addition of increasing concentrations of AC to the soil significantly reduced (P < 0.05) the extent of (14)C-phenanthrene mineralisation. For example, for CB4-, AQ5000- and CP1-amended soils, the overall extent of (14)C-phenanthrene mineralisation reduced from 43.1% to 3.28%, 36.9% to 0.81% and 39.6% to 0.96%, respectively, after 120 days incubation. This study shows that the properties of AC, such as surface area, pore volume and particle size, are important factors in controlling the kinetics of (14)C-phenanthrene mineralisation in soil.

Item Type:
Journal Article
Journal or Publication Title:
Environmental Science: Processes and Impacts
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2300/2308
Subjects:
ID Code:
74870
Deposited By:
Deposited On:
04 Aug 2015 12:24
Refereed?:
Yes
Published?:
Published
Last Modified:
08 Jul 2020 04:46