Fate of Environmental Pollutants Christophe J. G. Darnault1* and Shooka Karimpour Ghannadi2
doi:10.2175/106143009X12445568400656
The purpose of the present literature review is to cover
Chesnaux and Allen (2008) simulated nitrate transport in
studies published during the calendar year 2008 on the fate
vadose zone using SEEP/W for water seepage and
of environmental pollutants in the atmosphere, soil,
CTRAN/W for contaminant transport. Nitrate leaching
groundwater and surface waters. Studies related to soil
profiles were modeled in vadose zone using SEEP/W and
remediation, water quality and sources of environmental
CTRAN/W. Heterogeneity and permeability had effects on
pollution as well as reaction kinetics and modeling are
nitrate transport in vadose zone. Eriksen et al. (2008)
reviewed. Included in the coverage of the present review is
investigated the impacts of grassland proportion in mixed
research on pollutants, such as: nutrients, xenobiotics,
crop rotations on soil C and N accumulation, fertilizer
metals, pathogens, and nanomaterials.
replacement by residuals as well as annual and accumulated nitrate leaching losses. It was observed that over time,
Nutrients
differences between grasslands existed and cumulative
Nitrate and Nitrogen. Crevoisier et al. (2008)
impacts were significant. At crop-rotation level, nitrate
investigated the transfer of water and nitrogen using the
transport was governed by that from grasslands and over
HYDRUS-2D model under different irrigation methods on
time, nitrate transport from the rotations with fertilized
Chromic Luvisol in Bulgaria. This model was used to
ryegrass was higher than from those with unfertilized
assess environmental risks resulting from irrigation
grass–clover. Theses differences increased with increasing
methods associated with fertilization practices.
amount of grassland in the rotation. Domagalski et al.
—————————
(2008) investigated the fate and transport of nitrate in a
1*
Department of Civil and Materials Engineering, 842 West
groundwater transect from an almond orchard to the
Taylor Street, ERF # 2071, University of Illinois at Chicago,
Merced River, California, USA. The movement of water
Chicago, IL 60607; Tel. 312-996-2429; Fax. 312-996-2426; e-
and chemicals along transect from an orchard where
mail:
[email protected]
chemicals were applied to a river discharge outlet were
2
Department of Civil and Materials Engineering, University of
monitored to investigate the processes controlling the
Illinois at Chicago
distribution and fate on nitrate. It was found that about 63%
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Water Environment Research, Volume 81, Number 10—Copyright © 2009 Water Environment Federation
of the applied nitrogen was transported through the vadose
transport of nitrate in groundwater discharge passing
zone Variois transport times from recharge locations to the
through streambed. Flow rates and water residence times
various location in the riparian zone were reported Isotopic
on nitrate removal were investigated on five sites across
measurements and concentrations of excess N2 in aqueous
USA. Residence times of groundwater in the streambeds of
environment indicated
N-rich
denitrification
processes.
The
watersheds
an
in
River. Bruland et al. (2008) surveyed soil NO3-N
Therefore, it was found that streambeds can decrease
distributions across various land uses and soils in the Santa
nitrate concentrations in groundwater that bypasses riparian
Fe River watershed to compare NO3-N levels in forested
zones and serve as a nitrate sink.
lower
forested
Phosphate and Phosphorous. Zhang et al. (2008) combined experiments and modeling to investigate
environment across all sampled depths and in the soil
impacts of sediment concentration and loading on
profile.. It was demonstrated that land-use is a more
phosphorus adsorption on sediments from sites of Yangtze
important contributor to soil NO3-N concentration than soil
River in China. Their experiments revealed that time,
itself. Gonçalves et al. (2008) assessed the transport of
sediment concentration and initial phosphorus loading
nitrate and potassium under various temperature treatments
played a role in the phosphorus adsorption. Among the
including ambient temperature (25 - 28 ºC), temperature of
various model used, the Langmuir model gave the best
40 ºC and temperature of 50 ºC. It was found that
adsorption isotherm. Similar observations were found for
temperature had a impact on the velocity of solution in
phosphate sediment dynamics. Jiao et al. (2008) modified
porous media and on dispersion coefficient as they
the non-deal competitive adsorption model (NICA) to
observed breakthrough curves shifting to left and greater
model hydroxyl and phosphate adsorption to soil samples
value of the dispersive effect by increase in temperature
from sites of McGill University. It was found that nitrate
solution. Abit et al. (2008) evaluated the fate of nitrate in
adsorption is controlled by pH. Also due to the high
the capillary fringe and shallow groundwater. Results
compatibility of adsorption model to observation, it was
showed not only that nitrate was transported horizontally in
suggested that NICA model may predict the adsorption of
the capillary fringe as well as that nitrate persisted longer
phosphate and the competitive adsorption in soils. Siemens
in the capillary fringe than in the water table. It was also
et al. (2008) conducted experiments to investigate whether
reported that relying on groundwater samples may lead to
the accumulation of phosphorous in soils due to excess
underestimating
traveling
phosphorous additions enhances the leaching of colloids
horizontally through the subsurface environment. Puckett et
and colloidal phosphorus from sandy soils. Their results
al. (2008) studied the processes that govern the fate and
demonstrated that an accumulation of phosphorous in
quantity
of
than
concentrations.
non-forested
the
in
nitrate
factor
denitrification
significantly
decrease
important
highest denitrification rates were located below the Merced
versus non-forested environments. Soil NO3-N was
to
played
nitrate
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Water Environment Research, Volume 81, Number 10—Copyright © 2009 Water Environment Federation
sandy soils did not always lead to an increased in transport
degradation under various electron acceptor (nitrate or
of colloids and colloidal phosphorus, because various
sulfate) reducing conditions and in the presence of a mixed
factors control the mobility of colloids in soils. In contrast,
cultures enriched from gasoline contaminated soil. The
phosphorous accumulation generally increases dissolved
experiment for substrates - benzene, toluene, ethylbenzene,
phosphorous concentrations in noncalcareous soils due to
o-xylene, m-xylene and p-xylene - demonstrated that higher
the saturation of the phosphorous sorption capacity. Yang
concentrations of BTEX were toxic to the mixed cultures
et al. (2008) investigated the effects of ageing time on the
and that BTEX degradation rates decrease. They showed
structure as well as the phosphate adsorption of a
that nitrate was a more efficient electron acceptor than
dewatered alum sludge from Ireland. Testing on samples of
sulfate. Raynal and Pruden (2008) explored the effect
sludge stored for various times aims at establishing their
BTEX on MTBE biodegradation on the microbial
chemical properties, phosphate adsorption capacities and
consortium and the reactor configuration. Two enrichment
structures. The results for phosphate adsorption showed
cultures were monitored and compared: “originally
that the adsorption capacity of the alum sludge decreases as
enriched on MTBE-only (MO)” and “originally enriched
pH increases, while ageing seemed to not affect the P-
on MTBE and BTEX(MB)”. The impact of batch versus
adsorption capacity of the alum sludge.
semi-batch reactor configuration was also established using MO culture. Study suggested that MTBE bioremediation
BTEX/MTBE
with BTEX is possible and its performance may be
A full-scale biosparging operation was conducted at a
increased by factors, such as microbial consortium. It was
petroleum-hydrocarbon spill site by Kao et al. (2008).
also demonstrated that a semi-batch reactor may perfom
Natural attenuation was found to be the major cause of the
better. Youngster et al. (2008) examined the effect of
decrease in BTEX concentrations in groundwater before
environmental
biosparging operation. Biosparging operation resulted in
Effects of BTEX, methoxylated aromatic compounds and
the field in a shift of from anaerobic to aerobic conditions
inhibitors were studied for MTBE biodegradation. It was
inside the plume. During the operation of biosparging,
reported that none of these compounds had a significant
aerobic biodegradation was the dominant degradation
effect on the degradation process.
conditions
on
MTBE
biodegradation.
processes of BTEX and a significant decrease in BTEX concentrations within the plume was observed. Farhadian et
Metals
al. (2008) also reviewed the microbiology and metabolism
Bhavsar et al. (2008) examined the effects of differences in
of monoaromatic biodegradation and in situ bioremediation
estimates of the fate of cationic metals (Cd, Cu, Ni, Pb, and
under aerobic and anaerobic conditions for BTEX removal
Zn) in Ross Lake, Kelly Lake and Lake Tantare using the
from groundwater.. Duo et al. (2008) studied the BTEX
Windermere humic aqueous model (WHAM) and the
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Water Environment Research, Volume 81, Number 10—Copyright © 2009 Water Environment Federation
minicomputer equilibrium+ model (MINEQL+). The
concentrations. Therefore, the presence of small valley
results of these geochemical models were used as input for
bottom wetlands in forested landscapes is ecologically
the transport model TRANSPEC. WHAM and MINEQL+
significant because of the net increase in total mercury and
models estimated that the speciations and complexations
methyl
for these metals were similar for Lake Ross and Lake Kelly
ecosystems. Garrido et al. (2008) conducted experiments to
but different for Lake Tantare. The main differences
determine the physiochemical factors involved in Pb and
between the WHAM and MINEQL+ models were observed
Cd transport and sorption in soils. Breakthrough curves
for partition coefficient. Bhavsar et al. (2008) extended
analysis by temporal moment demonstrated that the mass of
TRANSPEC-II model from their previous model called
Cd transported is higher than that Pb and that the travel
TRANSPEC that was applicable to most cationic metals
time for Cd is lower than that of Pb. It was found that Pb
and surface aquatic systems. The extended version,
had a high affinity and retention for these soils while Cd
TRANSPEC-II, accounted for interactions between air–soil
had a high mobility. A functional relationship between
and soil–lake. In TRANSPEC-II, the partition coefficient
sorption and transport parameters through a linear
between the soil-solid and -soluble phases was obtained
regression and canonical correlation analysis was also
using site-specific data and a semi-empirical regression
estimated. Hutzell and Luecken (2008) used version 4.6 of
model. TRANSPEC-II was applied to the Kelly Lake
the CMAQ modeling system that simulates urban and
watershed where several mining operations are located and
regional air quality to model the fate and transport of
where the watershed is naturally enriched in Ni, and Cu.
metals lead, manganese, total chromium, nickel, and
Their results showed that soil runoff contributes about 20%
cadmium over USA during January and July 2001. To
of Ni entering into Kelly Lake and that leaching to
evaluate their predictions, they observed metals in PM2.5
groundwater was a major loss process for Ni in the soil. It
(Particulate Matter with diameters less than 2.5 µm) from
was also demonstrated that with a decrease in soil pH,
the USEPA's Air Quality System database. It was found
metal runoff, leaching, and Kelly Lake inflow metal
that CMAQ had highest skill in lead and manganese
concentration increase exponentially. Selvendiran et al.
predictions and over residential and commercial areas in
(2008) investigated mercury dynamics within two forest
the eastern United States. Nickel and chromium predictions
wetlands in a northern forest ecosystem, especially their
also improve over these land use categories. Rural areas
influence on methyl mercury production and mercury
showed larger errors because these simulations did not
transport. Stream water chemistry and hydrology were
include emissions from aerial suspension and biomass
monitored and it was concluded that wetlands markedly
burning. Cadmium predictions showed the largest error.
altered the chemistry of upland stream water by increasing
Gnecco et al. (2008) examined the speciation and transport
total mercury, methyl mercury, DOC and decreasing SO4
of Zn and Cu as well as the transport of total suspended
mercury
transport
to
downstream
aquatic
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Water Environment Research, Volume 81, Number 10—Copyright © 2009 Water Environment Federation
solids and total organic carbon for airside (boarding area) and landside (vehicules parking area) aviation land uses at
Xenobiotics
the international airport of Genoa in Italy.. It was
In a review of fate of xenobiotics, Kemper (2008) studied
concluded that Zn2+ dominated Zn speciation and Cu
the fate of antibiotics used in animal husbandry, focusing
complexes with carbonate or dissolved organic matter,
especially whith the antibiotic resistance and their
dominated Cu speciation. Pazos et al. (2008) studied the
extensive use. It was reported that thousands of tones of
effect of solubility and chemical speciation of metallic
antibiotics per year are released by animal husbandries.
species (Mn, Fe, Cu and Zn) and their interactions during
Information
their transport through kaolinite clay. Dungan and Dees
degradation processes of antibiotics into and in the
(2008) used toxicity characteristic leaching procedure
environment was also provided. Gianfreda and Roa (2008)
(TCLP), synthetic precipitation leaching procedure (SPLP),
presented the interactions in a soil among xenobiotics,
and ASTM water leach test to assess total metals in ferrous
especially pesticides and polycyclic aromatic hydrocarbons
and non-ferrous waste molding sands and their potential for
and microbial and enzymatic soil activities. They also
leaching. To conduct their experiments, they collected 43
discussed the use of microorganisms and enzymes to
sets of waste molding sand were collected in June 2005,
remediate xenobiotic polluted soils. Soares et. al (2008)
from 37 different foundries located in 13 states and 7
made a review on nonylphenol including its origin,
agricultural reference soils for comparison of the total
occurrence, treatment and accumulation in environment.
about
the
occurrence,
transport
and
metal data with that from the waste molding sands. Total Pathogens
metal concentrations in most of the waste molding sands were at the low end of the range measured in agricultural
Bacteria. Gargiulo et al. (2008) studied the fate
soils., with the exception of a few sands, only Co, Cu, and
and transport of hydrophilic and hydrophobic bacteria
Ni were above the range found in the soils. Due to the high
strains, respectively
amount of Ag, As, Ba, Cd, Cr, and Pb none of samples met
Rhodococcus rhodochrous in variably saturated sand.
the Resource RCRA characteristic. Metal concentrations
Several models were used to characterize the bacteria
were found to be lower in the SPLP and ASTM that the
transport and retention. A 2 site model was able to fit the
TCLP extracts due to the buffering capacity of the
breakthrough curve for both bacterial strains and for all
extraction fluids. Poissant et al. (2008) made a critical
water contents. It was observed that straining increased
review about the fate of Hg in the Arctic tundra, including
with increasing hydrophobicity of the bacteria and
fate of Hg in the Arctic ecosystem. They also assessed the
decreasing water saturation. They also concluded that the
impacts and potential risks of Hg contamination on the
bacteria attachment to solid–water and air–water interfaces
health of Arctic people and environment.
can not be the only mechanism responsible for bacteria
Deinococcus radiodurans
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Water Environment Research, Volume 81, Number 10—Copyright © 2009 Water Environment Federation
and
retention into soil particles and can not be mechanically
pore system. Bacterial transport was described by a one
separated
et al. (2008)
dimensional transport model with air–water interface
investigated the retention of Escherichia Coli in a series of
representing an additional sink for bacteria under in vadose
column and batch experiments in sand with solutions of
zone. They applied their model to the retention and
different
Derjaguin-Landau-Verwey-
interactions of E. coli, P. fluorescence and B. subtilis
Overbeek (DLVO) analysis and results showed that
within the pore system. Naclerio et al (2008) performed
breakthrough curve and retention of bacteria is related to
field
ionic strength. The bacteria retention mechanism is not
microbiological characteristics of a site in Italy as well as
only dependant of the solution chemistry but also of the
laboratory column experiments to investigate the reliability
pore space geometry which can create hydrodynamically
of thermotolerant coliforms and fecal enterococci as
disconnected regions. In theory, the number of bacteria that
bacterial indicators. It was found that structure and
may be transported to these "immobile'' regions will be
macropores distribution may affect the retention of
dependent on the secondary energy minimum. Borges et
bacteria. They also concluded that differences in physical
al. (2008) investigated the effect of nitrogen starvation on
properties
cell surface hydrophobicity and cell adhesion to soil
Enterococcus faecalis cells migration, than Escherichia coli
particles by bacterial strains that were known to be able to
cells. Fecal enterococci were also found to be a more
use benzene, toluene or xylenes as carbon and energy
reliable indicator than
sources. It was showed that nitrogen starvation of most
detecting contamination. Kim et al. (2008) made some
bacterial strains decreases not only the adhesion to soil
modifications to an already existing model developed by
particles but also the strength of cell adhesion to the soil
Niemet et al. in 2002 to analyze the influence of the AWI
particles.
Haznedaroglu et al. (2008) examined the
area on the transport of bacteria in vadose zone. The
influence of starvation conditions on the metabolic,
bacterial transport model was used to fit data from the
phenotypic, and adhesive nature of E. coli and on its fate
literature on the bacterial breakthrough data in vadose zone,
and transport in the subsurface environment. The non-
and the results demonstrated that the model matches well
starved cells were found to be more “adhesive” than
with the data at different air contents by varying the AWI
starved cells. Extracellular polymeric substance in starved
area.
from
ionic
straining. Torkbazan
strength.
experiments
have
a
on
the
more
hydrogeological
significant
influence
and
on
thermotolerant coliforms for
cells induces cells hydrophobicity and increases cells
Protozoa. La Mantia et al. (2008) investigated
adhesion. Chen (2008) investigated uncertainty associated
the fate and transport of Giardia and Cryptosporidium and
with bacterial transport model structures and formulations.
Campylobacter spp. in fractured aquifer in Salento, Italy.
Bacterial transport modeling uncertainty was eliminated by
The natural microorganisms decay during the passage
the use of surface thermodynamic characterizations of the
through the investigated area was monitored by sampling.
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Water Environment Research, Volume 81, Number 10—Copyright © 2009 Water Environment Federation
A considerable decrease of microbial indicators and
oocyst concentrations in the soil was observed at the
pathogens was observed during the natural passage of
beginning of the vegetative buffer.
microorganisms. These results indicated the possible
Virus. Knappett et al. (2008) investigated the
removal or inactivation of pathogens in aquifer fractured
impacts of grain size and solution chemistry on the
flow. Miller et al. (2008) investigated the environmental
transport of bacteriophage (MS-2) and 1.5-µm carboxylated
occurrence of Cryptosporidium oocysts on dairy farms in
microspheres. It was found that the colloid filtration theory
California. Other parameters included cattle age, 24h and
under estimated the effect of decreasing grain size on
cumulative seasonal precipitation. It was showed that the
physicochemical filtration of bacteriophage MS-2 and 1.5-
vegetated
protozoa
µm carboxylated microspheres by several orders of
concentrations and loads in runoff. Keeley and Faulkner
magnitude. Results generally indicated that small changes
(2008) characterized the seasonal effects on the presence of
in ionic strength and/or grain size significantly impacted
Cryptosporidium, Giardia, and other microorganisms and
virus removal in saturated porous media. Zhoa et al. (2008)
determined the effects of land use on pathogens in a
conducted batch and incubation experiments to analyze the
reservoir watershed characterized by recreation, farming,
effects of soil properties, water content, and the
and a potential drinking water source. Results from samples
presence/absence of autochthonous microorganisms on
collected from Lake Texoma, demonstrated seasonal
bacteriophage MS2
variations. Especiallu, Cryptosporidium and Giardia
effects of sterilization and soil water content on virus
oocysts concentration were found to be significantly high in
inactivation were assessed on Ustisandic Primosols and
summer and and higher in fall, as the fall season has the
Ferriudic Cambosols. No virus adsorption and differences
wettest months and is also the calving season. Chambers et
in activation in both presence and absence of soil
al. (2008) studied an Alaskan community that uses hauled
autochthonous
water and sewage to examine the contamination of drinking
Ustisandic Primosols. Virus inactivation in Ferriudic
water and the environment by fecal matter. It was found
Cambosols was sensitive to combined effects of soil water
that surface water flow transported both bacteria and
content and sterilization. Charles et al. (2008) conducted
protozoa during spring thaw, but flow from the dump did
experiments with MS2 and PRD1 to investigate the
not induce contamination in the community. Hussein et al.
mechanism responsible of the fate and transport of viruses.
(2008) investigated the retention of Cryptosporidium in
Experiments included laboratory and field experiments. It
vegetative buffers. Slurries containing oocysts were applied
was observed that mechanisms for virus removal varied
to soils and the resultant oocysts retention from the runoff
significantly depending on the virus susceptibility to
were compared. Suspended sediment loads from the soil
environmental chemistry. Kenst et al. (2008) investigated
were reduced by vegetative buffers and an increased in
the effect of vadose zone processes on the transport of
buffer
strips
decreased
the
adsorption and inactivation. The
microorganisms
were
found
in
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Water Environment Research, Volume 81, Number 10—Copyright © 2009 Water Environment Federation
the
viruses. Experiments included soil columns made of
fold increase for rye-grass in Al concentration in the leaves
Memphis
Virus
was reported. Ghosh et al. (2008) performed experiments to
concentrations decreases exponentially with travel distance
study the effects of pH and humic acids on the fate of
in
conditions.
Al2O3 nanoparticles. It was found that nanoparticles surface
Adsorption of virus to soil particles was observed
charge decreased with increasing pH and with humic
throughout the
result
substances. Humic substances improved nanoparticles
virus retardation during transient
stability at the pH of zero point charge and above, and
both
aquifer
saturated
and
and
entire
demonstrated that
bacteriophage
unsaturated
column
φX174.
soil
length. Their
unsaturated flow is similar to virus retardation during
facilitate
aggregation
of
nanoparticles
in
acidic
steady-state saturated flow.
environment. Loux and Savage (2008) developed an approach to characterize the self aggregation of metal oxide
NanoMaterials Christian
et
al.
nanomaterial by incorporating “diffuse layer model surface (2008)
studied
the
properties
of
complexation theory” and “historical Derjaguin– Landau–
nanoparticles and their fabrication and presented how these
Verwey– Overbeek (DLVO) procedures”. Zhan et al.
parameters can play a role in the fate and transport of
(2008) investigated the transport of iron nanoparticles
nanoparticles in the environment. Zhang et al. (2008)
entrapped in porous silica particles. Their findings
investigated the dispersion and stability of metal oxide
demonstrated that the entrapment of iron nanoparticles into
nanoparticles in water and also studied their removal by
silica particles limits their aggregation and maintains their
water treatment. It was observed that nanoparticles
reactivity which is a critical component for effective
aggregation impacts their fate in the aqueous environment
delivery of iron nanoparticles during groundwater in-situ
and that the electrolytes present in aqueous environment
remediation.
impact nanoparticles aggregation due to electrical doubleReferences
layer compression. Another review study on nanoparticles was made by Ju-Nam and Lead (2008) in which an
Abit S. M., Amoozegar A., Vepraskas M. J., Niewoehner C.
overview of the chemistry of nanoparticles in the aquatic
P.(2008) Fate of nitrate in the capillary fringe and shallow groundwater in a drained sandy soil, Geoderma, 146: 209–
and terrestrial environments was performed. Doshi et al.
215
(2008) investigated the transport of, nano-aluminum
Bhavsar S. P., Gandhi N., Diamond M. L. (2008) Extension of
particles, Alex and L-Alex in porous media as well as the
coupled multispecies metal transport and speciation
environmental impacts of nano-aluminum on soil and
(TRANSPEC) model to soil, Chemosphere, 70: 914–924
plants. The presence of nano-aluminum did not show
Bhavsar S. P., Gandhi N., Diamond M.L., Lock A.S., Spiers G.,
adverse effect on growth of tested plants. For California red
De la Torre MCA (2008) Effects of estimates from different
beans no uptake of aluminum was reported, while a 2.5-
geochemical models on metal fate predicted by coupled
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Water Environment Research, Volume 81, Number 10—Copyright © 2009 Water Environment Federation
speciation-fate models, Environmental Toxicology and
on the transport of nitrate near the Merced River, California,
Chemistry, 27: 1020-1030
USA, Hydrogeology Journal, 16: 675–690
Borges M. T, Nascimento A.G., Rocha U.N., Totola M. R.(2008)
Doshi R., Braida W., Christodoulatos C., Wazne M., O’Connor
Nitrogen starvation affects the bacterial adhesion to soil,
G. (2008) Nano-aluminum: Transport through
Brazilizan Journal of Microbiology, 39(3): 457-463
columns and environmental effects on plants and soil
Bruland G.L., Bliss C.M., Grunwald S., Comerford N.B., Graetz
sand
communities, Environmental Research, 106: 296–303
D.A. (2008) Soil nitrate-nitrogen in forested versus non-
Doua J., Liu X., Huc Z., Deng D. (2008) Anaerobic BTEX
forested ecosystems in a mixed-use watershed, Geoderma,
biodegradation linked to nitrate and sulfate reduction,
148: 220–231
Journal of Hazardous Materials, 151: 720–729
Chambers M.K., Ford M. R., White D. M. , Barnes D. L. ,
Dungan R. S. , Dees N. H. (2008) The characterization of total
Schiewer S. (2008) Distribution and transport of fecal
and leachable metals in foundry molding sands, Journal of
bacteria at spring thaw in a rural Alaskan community
Environmental Management, 90(1): 539-548
Journal of Cold Regions Engineering, 22(1): 16-37
Eriksen J., Askegaard M. & Søegaard K. (2008) Residual effect
Charles K. J., Souterc F. C., Baker D. L., Davies C. M., Schijven
and nitrate leaching in grass-arable rotations: effect of
J. F., Roser D. J., Deere D. A., Priscott P. K., Ashbolt N. J.
grassland proportion, sward type and fertilizer history, Soil
(2008) Fate and transport of viruses during sewage
Use and Management, 24: 373–382
treatment in a mound system, Water research, 42: 3047 –
Farhadian M., Vachelard C., Duchez D., Larroche C. (2008) In
3056
situ
Chen G. (2008) Bacterial interactions and transport in unsaturated
bioremediation
of
monoaromatic
pollutants
in
groundwater: A review, Bioresource Technology, 99: 5296–
porous media, Colloids and Surfaces B: Biointerfaces, 67:
5308
265–271
Gargiulo G., Bradford S. A., Simunek J., Ustohal P., Vereecken
Chesnaux R. & Allen D. M. (2008) Simulating Nitrate Leaching
H., and Klumpp E.(2008) Bacteria Transport and Deposit
Profiles in a Highly Permeable, Vadose Zone Environ
on under Unsaturated Flow Conditons: The Role of Water
Model Assess, 13:527–539
Content and Bacteria Surface Hydrophobicity, Vodose zone
Christian P., Von der Kammer F., Baalousha M., Hofmann Th.
Journal, 7(2): 406-419
(2008) Nanoparticles: structure, properties, preparation and
Garrido F., Serrano S., Campbell C.G., Barrios L., Garcia-
behavior in environmental media, Ecotoxicology, 17:326–
Gonzalez A.T. (2008) Evidence of physical and chemical
343
nonequilibrium in lead and cadmium transport and sorption
Crevoisier D., Popova Z., Mailhol J.C., Ruelle P. (2008)
in acid soils, Soil Science Society of America, 72(5): 1434-
Assessment and simulation of water and nitrogen transfer
1444
under furrow irrigation, Agricultural water management,
Ghosh S., Mashayekhi H., Pan B., Bhowmik P. and Xing B.
95: 354– 366
(2008)
Domagalski J. L., Phillips S. P., Bayless E. R., Zamora C.,
Colloidal
Behavior
of
Aluminum
Oxide
Nanoparticles as Affected by pH and Natural Organic
Kendall C., Wildman R. A. & Hering J. R. (2008)
Matter, Langmuir, 24: 12385-12391
Influences of the unsaturated, saturated, and riparian zones
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Water Environment Research, Volume 81, Number 10—Copyright © 2009 Water Environment Federation
Gianfreda L. and Roa M. A. (2008) Interactions between
Keeley A., Faulkner B. R. (2008) Influence of land use and
Xenobiotics and Microbial and Enzymatic Soil Activity,
watershed characteristics on protozoa contamination in a
Critical Reviews in Environmental Science and Technology,
potential
38:269–310
Research, 42: 2803 – 2813
Gonçalves A. D. M. A., Miranda J. H., Rossi P., Sabadin J. F. G.,
drinking
water
resources
reservoir,
Water
Kemper N. (2008) Veterinary antibiotics in the aquatic and
Kamogawa M. Y. (2008) Temperature effect in potassium
terrestrial environment, Ecological Indicators, 8: 1-13
and nitrate ions in soil transport. Eng. Agríc., 28(3): 438-
Kenst A.B., Perfect E., Wilhelm S.W., Zhuang J., McCarthy J.F.,
447
McKay L. D. (2008) Virus Transport during Infiltration of a
Gnecco I., Sansalone J. J., Lanza L. G. (2008) Speciation of Zinc
Wetting Front into Initially Unsaturated Sand Columns,
and Copper in Stormwater Pavement Runoff from Airside
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and landside Aviation Land Uses, Water Air Soil Pollut,
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Haznedaroglu B.Z., Bolster C.H., Walker S.L. (2008) The role of
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Knappett P. S.K., Emelko M. B., Zhuang J. and McKay L. D. (2008) Transport and retention of a bacteriophage and
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microspheres in saturated, angular porous media: Effects of
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ionic strength and grain size, Water Research, 42(16):
Cryptosporidium parvum oocysts with or without a vetiver
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buffer strip, Soil Biology and Biochemistry, 40(10): 2696-
La Mantia R., Masciopinto C., Levantesi C.and Tandoi V.(2008)
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Hutzell W. T., Luecken D. J. (2008) Fate and transport of artificially recharged fractured aquifer of Salento, Italy, emissions for several trace metals over the United States,
Water Scinece and Technology, 57(6): 849-856
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on microbial contamination of groundwater in fractured
Adsorption in the Chongqing Reach of the Yangtze River,
carbonate aquifers, Hydrogeology Journal, 16: 1057–1064
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Papadopoulos K. and John V. T. (2008) Transport
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review of mercury fates and contamination in the arctic
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microorganisms and water content,
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(2008) Wetland influence on mercury fate and transport in a temperate forested watershed, Environmental Pollution,
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the structure and phosphate adsorption capacity of Siemens J., Ilg K., Pagel H., Kaupenjohann M. (2008) Is Colloiddewatered alum sludge, Chemical Engineering Journal, Facilitated Phosphorus Leaching Triggered by Phosphorus 145(2): 276-284
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Microbiol Biotechnol, 80: 1113–1120 on occurrence, fate, toxicity and treatment in wastewaters, Environment International, 34: 1033–1049 Torkzaban S, Tazehkand S. S., Walker S.L., Bradford S.A. (2008) Transport and Fate of bacteria in porous media: Coupled effects of chemical conditions and pore space geometry, Water Resources Research, 44(4): W04403 Zhang J., Guo Y. and Wang P. (2008) Effects of Sediment Concentration and Initial Phosphorus Loading on Phosphate
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