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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
environmental science
Evaluation of pyrene sorption-desorption on tropical soils
Journal of Environmental Management, Volume 137, Year 2014
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Description
Sorption-desorption processes control soil-pollutant interactions. These processes determine the extent of pyrene transport in soils. Understanding sorption characteristics of pyrene is necessary in ascertaining its fate in soil. Laboratory batch experiments were conducted to study the sorptions-desorption of pyrene on eight soils from varying tropical agro-ecological zones (AEZs). The results showed that pyrene sorptions equilibria were attained within 720min. Solution pH had a reciprocal effect on pyrene sorptions. Sorption was exothermic and increased with pyrene concentration in solution. The quantities of pyrene sorbed by each soil as well as the hysteresis were proportional to the percentage organic matter, and to some degree, the clay mineralogy. Sorption isotherms showed distributed reactivity involving several linear and non-linear isotherms. The present investigation showed that pyrene is likely to be more available to biota and reach the aquifer faster in low organic matter soils than those with relatively higher organic matter and more so in warmer climes. © 2014 Elsevier Ltd.
Authors & Co-Authors
Olu-Owolabi, B. I.
Nigeria, Ibadan
University of Ibadan
Diagboya, Paul N.
Nigeria, Ibadan
University of Ibadan
China, Beijing
National Center for Nanoscience and Technology Beijing
Adebowale, Kayode Oyebode
Nigeria, Ibadan
University of Ibadan
Statistics
Citations: 119
Authors: 3
Affiliations: 2
Identifiers
Doi:
10.1016/j.jenvman.2014.01.048
ISSN:
03014797
Research Areas
Environmental