PMID: 11902158Mar 21, 2002Paper

Humic acid enhanced remediation of an emplaced diesel source in groundwater. 1. Laboratory-based pilot scale test

Journal of Contaminant Hydrology
D R Van StempvoortJ R Lawrence

Abstract

The enhanced solubility of petroleum-derived compounds in humic acid solutions is the basis for a new groundwater remediation technology. In this unique pilot-scale test, a stationary contaminant source consisting of diesel fuel was placed below the water table in a model sand aquifer (1.2 x 5.5 x 1.8-m deep) and flushed with water at a flow rate of 2 cm/h over 5 years. At 51 days, laboratory grade humic acid was added to the water and maintained at a level of approximately 0.8 g/l. The addition of humic acid had only a small impact on the aqueous transport of the BTEX components, which were rapidly dissolved from the diesel, but had a large effect on the flushing of PAHs, including methylated naphthalenes (MNs). Binding to aqueous humic acid enhanced the solubilization of MNs two- to tenfold. During aqueous transport, biodegradation of the BTEX and PAHs occurred, limiting the lateral and longitudinal extent of the diesel contaminant plume in the model aquifer. It appears that through enhanced solubilization, the overall biodegradation rate of the MNs was increased. As the various MNs were depleted from the diesel source, the MN plume shrank and then disappeared.

References

Oct 13, 2001·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·S LesageK Novakowski
Nov 1, 1985·Environmental Science & Technology·J F McCarthy, B D Jimenez

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Citations

Sep 12, 2008·Journal of Biological Engineering·Yanna LiangRonald C Sims
Apr 4, 2015·Journal of Environmental Health Science & Engineering·Masoumeh RavanipourSamireh Hashemi-Najafabadi
Oct 17, 2014·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Mahmoud D Eljack, Abul Hussam
Dec 8, 2015·Journal of Environmental Quality·César García-DíazRafael Martínez-Palou
Mar 15, 2006·Bioprocess and Biosystems Engineering·M Alvarez CuencaS R Upreti
Jul 20, 2019·Biotechnology Advances·Jeong Gu LeeJong-Rok Jeon
Aug 24, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Ellen J Robertson, Geraldine L Richmond
Nov 6, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Nicholas A ValleyGeraldine L Richmond

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