title: Remediation of groundwater contaminated with the lead-phenol binary system by granular dead anaerobic sludge-permeable reactive barrier.
abstract: Computer solutions (COMSOL) Multiphysics 3.5a software was used for simulating the one-dimensional equilibrium transport of the lead-phenol binary system including the sorption process through saturated sandy soil as the aquifer and granular dead anaerobic sludge (GDAS) as the permeable reactive barrier. Fourier-transform infrared spectroscopy analysis proved that the carboxylic and alcohol groups are responsible for the bio-sorption of lead onto GDAS, while phosphines, aromatic and alkane are the functional groups responsible for the bio-sorption of phenol. Batch tests have been performed to characterize the equilibrium sorption properties of the GDAS and sandy soil in lead and/or phenol containing aqueous solutions. Numerical and experimental results proved that the barrier plays a potential role in the restriction of the contaminant plume migration and there is a linear relationship between longevity and thickness of the barrier. A good agreement between these results was recognized with root mean squared error not exceeding 0.04.
authors.affiliation: a Department of Environmental Engineering , College of Engineering, University of Baghdad , Baghdad , Iraq.
authors.forename: Ayad A H
authors.initials: AAH
authors.lastname: Faisal
authors.affiliation: a Department of Environmental Engineering , College of Engineering, University of Baghdad , Baghdad , Iraq.
authors.forename: Ziad T
authors.initials: ZT
authors.lastname: Abd Ali
mesh_terms: D004787:Environmental Pollution / Q000517:prevention & control*; D060587:Groundwater / Q000737:chemistry*; D007854:Lead / Q000737:chemistry*; D019800:Phenol / Q000737:chemistry*; D012722:Sewage; D012987:Soil
chemical_list: D012722:Sewage; D012987:Soil; D007854:Lead; D019800:Phenol
keywords: Granular dead anaerobic sludge; lead; permeable reactive barrier; phenol; transport