PMID: 11757619Jan 5, 2002Paper

PAH release during water desorption, supercritical carbon dioxide extraction, and field bioremediation

Environmental Science & Technology
Steven B HawthorneRaymond C Loehr

Abstract

Removal rates of polycyclic aromatic hydrocarbons (PAHs) from manufactured gas plant (MGP) soils were determined using water desorption for 120 days and mild supercritical carbon dioxide extraction (SFE) for 200 min. Both techniques were used to compare the changes in desorption rates for individual PAHs from untreated and treated soils that were obtained from a field biotreatment unit after 58, 147, and 343 days. Water desorption profiles (plotted in days) and SFE profiles (plotted in minutes) were very similar regardless of whether a PAH was rapidly or slowly removed. Water and SFE profiles were fit with a simple two-site (fast and slow) model to obtain the fraction of each PAH that was rapidly released (F). There was agreement between the F values obtained from water desorption and SFE for PAHs ranging from naphthalene to benzo[a]pyrene from all soils, with an overall correlation coefficient (r2) of 0.81. F values from water desorption and SFE also agreed with the actual removal of PAHs obtained after 147 and 343 days of field remediation (r2 ca. 0.80). The use of shorter desorption times (2-4 days for water and 20-40 min for SFE) allowed F values to be estimated for all PAHs and showed excellent agreement with the removal o...Continue Reading

References

Jun 28, 2000·Toxicological Sciences : an Official Journal of the Society of Toxicology·N R BordelonS E George

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Citations

Jun 5, 2012·Journal of Agricultural and Food Chemistry·Song Lou, Duolong Di
Aug 25, 2009·Journal of Hazardous Materials·S GanH K Ng
Apr 4, 2009·Journal of Hazardous Materials·Changhong HongQuanxing Zhang
Jul 8, 2008·Journal of Hazardous Materials·Javier RivasRuth G de la Calle
Jan 5, 2011·Environmental Toxicology and Chemistry·Robert M BurgessMarguerite A Pelletier
Sep 21, 2011·Environmental Toxicology and Chemistry·Stephen D Richardson, Michael D Aitken
Sep 29, 2005·Environmental Pollution·Tobias NilssonErland Björklund
Aug 9, 2008·Environmental Pollution·Yi YangThilo Hofmann
Apr 23, 2011·Environmental Pollution·M N BaigR C D Santos
Apr 17, 2010·International Journal of Analytical Chemistry·E V LauH K Ng
Oct 28, 2014·Environmental Science and Pollution Research International·Chinedum AnyikaAdibah Yahya
Apr 28, 2006·Integrated Environmental Assessment and Management·Hans F StrooAdrienne LaPierre
Jan 14, 2020·The Science of the Total Environment·Dustin PoppendieckVu Pham

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