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Pollutant Fate and Transport in Environmental Multimedia

Frank M. Dunnivant
Elliot Anders

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Preface

While there are many of textbooks on environmental chemistry and fate and transport phenomena, and they each have their place in education, this is the first book to truly integrate the subjects chemistry, fate and transport modeling, assessment, laws, and environmental laboratory experiments. The entire text was edited to ensure a consistent modeling theme that is vital to the regulatory applications of environmental fate and transport of contaminant science. These applications are truly multimedia in scope and encompass modern‐day regulations in successful EPA approaches in the Clean Air Water and Drinking Water Acts. The related RCRA and CERCLA (Superfund) programs address hazardous and toxic materials and ensure that environmental and human health are equally protected. These laws use mathematical models to assess contaminant exposure that contribute to multiple adverse effects in the biosphere. Most books in this genre are conceptual in nature or require a working knowledge of differential calculus to effectively derive and use new models. This prerequisite effectively eliminates many people from working in fate and transport.

We approach each of these topics initially from a conceptual perspective, and then, we explain the concepts in terms of the math necessary to model the problem. The only prerequisites for understanding the concepts covered in this book are a basic knowledge of algebra and first‐year college chemistry. Mathematic enthusiasts will find the extensive, step‐by‐step, end‐of‐chapter derivations useful. This last feature is unique to all other textbooks. For the fate and transport modeling chapters (Chapters 4-9), we have included a simple, user‐friendly web‐based, online simulator, Fate®, which uses basic step and pulse models to predict the fate and transport of pollutants in lake, river, groundwater, and atmospheric systems. Fate® can be an effective teaching and learning tool, as discussed in the “How to Use Fate” section of the introductory materials.

This book is the result of a challenge I made to one of my senior chemistry students. I challenged Elliot Anders, the coauthor of this book, to create a new version of EnviroLand, the precursor to Fate®. If he did so, I told him, I would write a book to accompany it. To my surprise, Elliot finished the software in a few months and to meet my end of the bet, I had to write the 2006 textbook around the software. We feel that this textbook provides a very unique instructional tool for students and environmental professions who lack the rigorous mathematical backgrounds to be able to derive the governing fate and transport equations, but nonetheless require an understanding of the subject. This book can be used to teach a variety of classes, from a new type of environmental chemistry course to new fate and transport courses for support personnel who want to work in the environmental arena. I use the book to teach environmental chemistry to undergraduate students majoring in chemistry, geology, and biology, to mostly prepare them for work in the environmental consulting arena and government. These students usually have sufficient background to work in environmental remediation but lack the basic engineering knowledge to be truly effective in this area. I have had great success in expanding the academic horizons of science students to areas of chemistry, modeling, risk assessment, and environmental legislation. In addition, there is no reason that this book cannot be used in a graduate course in fate and transport, since it provides an especially extensive and complete development of fate and transport models. In this case, the professor can use the book as a conceptual guide while teaching the derivation portion of the course in the classroom.

New additions to this book include free software available at https://sites.google.com/a/whitman.edu/frank‐dunnivant‐webpage/environmentalsoftware:

  • an Web‐based Pollutant Fate and Transport Simulator, (Fate®)
  • a pC‐pH Simulator
  • Water and Wastewater Plant Tour Video
  • EnviroLab
  • More end‐of‐chapter problems with answers to the more complicated problems
  • New environmental lab chapters on the United States, European Union, and China
  • Student lab results for suggested experiments
  • A supporting discussion‐based book entitled Environmental Success Stories with Columbia University Press

We hope you enjoy our approach to environmental chemistry and pollutant fate and transport modeling.

Frank M. Dunnivant

September 2018

Acknowledgments

A book of this detail and 20‐year effort has involved many people. First, I thank my coauthor, Elliot Anders, for challenging me to make the software better than the original Visual Basic version. Next, I thank Raymond Whittemore for writing, editing, and making many, many excellent suggestions. Note Dr. Whittemore's experience with, and knowledge of regulatory modeling were essential to the revised theme of this edition. Ray participated in water quality modeling training workshops for more than a decade for EPA's Exposure Assessment Laboratory in Athens, GA. Late in his career, he participated in the EPA Council for Regulatory Environmental Modeling (CREM) development in a leadership role in the surface water quality modeling group discussions.

Then, I thank Dr. Nate Boland and his students for testing this book and materials in his Environmental Chemistry and Engineering class at Whitman College. Certainly, a great thank you goes to my former student John Brooksbank for derivations of the many pollutant fate and transport equations that do not appear in any textbook in this detail. Many students can earn an A in differential equations but few can apply the knowledge like John has. The end‐of‐chapter problems, answers, and laboratory experiment results have been provided by 19 years of students taking my classes. I thank all of you for a job well done.

Acronyms

α
alpha type of radiation
ADD
average daily doses
AF
Risk: soil to skin adherence factor (mg/cm2)
AID
maximum acceptable daily intake
Al2O3
aluminum oxide
As
mean lake or system surface area, m2
AT
Risk: average time period of exposure (days)
AMD
acid mine drainage
β
beta type of radiation
BAP
best available practice
BFC
bioconcentration factors
BOD
biochemical oxygen demand
Bq
Becquerel
BW
Risk: body weight (kg)
c
the speed of light in a vacuum (2.99 × 108 m/s)
C
the pollutant concentration in the water (mass/length3 or volume; mg/l, etc.) or molar charge
Ci
curies, a measure of radiation
Ci
the pollutant concentration in the main inlet river or system, kg/m3
C6H12O6
chemical formula for glucose
CA
Risk: pollutant concentration in the air (mg/m3)
CAS
Chemical Abstract Number
CCA
Air Quality Act, The Clean Air Act
CCRs
coal combustion residuals
CDC
Center for Disease Control and Prevention
CEAM
EPA Center for Exposure Assessment Modeling
CEC
cation exchange capacity
CERCLA
Comprehensive Environmental Response, Compensation, and Liability Act
CF
Risk: volumetric conversion factor for water (1.00 l/1000. cm3)
CF
Risk: pollutant concentration in the food (mg/kg)
CF
Risk: pollutant concentration in the fish or shellfish (mg/kg)
CF
Risk: pollutant concentration in the fish (mg/kg d)
CFL
compact fluorescent lamp
CH4
chemical formula for methane (gas)
CO
carbon monoxide; Colorado, a state in the United States
CO2
carbon dioxide
images
carbonate
COC
contaminants of concern
COE
Army Corps of Engineers
Cp
the net pollutant concentration in precipitation, kg/m3
CR
Risk: contact rate (0.050 l/h)
CREM
EPA Council for Regulatory Modeling
Cs
the average pollutant release from suspended lake sediments, kg/m3‐time
CS
Risk: pollutant concentration in the soil (mg/kg)
CSTR
continuous stirred tank reactor
CT
the total concentration of all chemical species for this chemical
Ctrib
the net pollutant concentration of the tributaries, kg/m3
Cw
the pollutant concentration in the wastewater, kg/m3
CW
Risk: pollutant concentration in the drinking water (mg/L)
CWRA
Clean Water Restoration Act
d
average stream depth
DBMS
Database Management System
DDT
1,1′‐(2,2,2‐trichloroethylidene)bis[4‐chloro‐benzene]
DEM
Dynamic Estuary Model
DNAPL
dense nonaqueous phase liquid(s)
DO
dissolved oxygen
DOD
Department of Defense
DOE
Department of Energy
DWEL
drinking water equivalent levels
e
an electron
E
energy; longitudinal eddy diffusion term
ED
Risk: exposure duration (number of years)
EDC
endocrine disrupting compound
EDTA
ethylenediaminetetraacetic acid
EF
Risk: exposure frequency (d/yr)
EFDC
Environmental Fluid Dynamics Code
EH
oxidation–reduction potential
EIS
environmental impact statement
EPA
Environmental Protection Agency
EPA LUST
Environmental Protection Agency Leaking Underground Storage Tank
EPCRA
Emergency Planning and Community Right to Know Act
EPTT
extraction procedure toxicity test
ESA
Endangered Species Act
EXAMs
Exposure Analysis Modeling System
F
Faraday constant (96 485 C/mol of electrons)
FIFRA
Federal Insecticide, Fungicide, and Rodenticide Act
Fe2O3
iron oxide
FeCO3
iron carbonate
FI
Risk: fraction of soil ingested from the polluted site
FWPCA
Federal Water Pollution Control Act
γ
gamma type of radiation
g
the acceleration due to gravity (length/time2)
g
grams
GEOCHEM
a numerical modeling program for determining chemical speciation
GLBTS
Great Lakes Binational Toxics Strategy
η
kinematic viscosity of the fluid (length2/time)
h
Planck's constant (6.63 × 10−34 J s)
H
the water depth (length)
H+ or H3O+
hydronium ion, acidic hydrogen
H2O
chemical formula for water
HRS
hazardous ranking system
HCl
hydrochloric acid
images
hydrogen carbonate, bicarbonate
H2CO3
carbonic acid
HQ
hazard quotient
H2S
hydrogen sulfide gas
HS
chemical formula for hydrogen sulfide ion
INEEL
Idaho National Engineering and Environmental Laboratory
IR
Risk: inhalation rate (m3/d)
IR
Risk: ingestion rate of water (l/d)
ISC
industrial source complex
k
the first‐order removal rate for the pollutant, 1/time
kd
the first‐order BOD decay rate
kr
the DO re‐aeration rate
kNOM
the rate constant in the presence of Natural Organic Matter (NOM)
Ka
the acidity equilibrium constant
Kb
the basicity equilibrium constant
Kd
distribution coefficient
KH
air‐water Henry's law constant
Kp
partition coefficient
Ksp
solubility product constant
Kw
the water ionization constant; 1.00 × 10−14 (at 25 °C)
λ
the wavelength in meters
l
liters, a measure of volume
LCA
life cycle assessment
LCOE
levelized cost of energy
LED
light‐emitting diode
ln
natural logarithm
LNAPL
light nonaqueous phase liquid
LOAEL
lowest‐observed‐adverse‐effect level
LOEL
lowest‐observed‐effect level
LUST
leaking underground storage tank
J
Joules, a measure of energy
μ
ion strength
M
molarity, mol/l
Mo
the total mass of pollutant in the river
meq
milliequalivance
NEPA
National Environmental Policy Act
MIC
methyl isocyanate
MINTECH
a numerical modeling program for determining chemical speciation
MINEQL+
a numerical modeling program for determining chemical speciation
NIOSH
National Institute for Occupational Safety and Health
MnO2
chemical formula for manganese dioxide
MPRSA
Marine Protection, Research, and Sanctuaries Act
MTBE
methyl tert‐butyl ether
NAAQS
national ambient air quality standard
NEPA
National Environmental Policy Act
N2
chemical formula for nitrogen gas
NOM
natural organic matter
NOx
combinations of nitrogen oxide and nitrogen dioxide
images
chemical formula for nitrate
NOAEL
no‐observed‐adverse‐effect level
NOEL
no‐observed‐effect level
NPL
National Priorities List
NTA
nitrilotriacetic acid
O*
radical gaseous oxygen
OH
hydroxide ion
OH*
radical gaseous hydroxide
O3
ozone gas
OPA
Oil Pollution Act
OSHA
Occupational Safety and Health Act or Administration
p
as in pC or p(anything); represents the negative log of the quantity; example: pCO2 represent the negative log of the carbon dioxide molar concentration in pC–pH diagrams
pH
negative log of the hydrogen ion concentration
pHZPC
the pH where there is no surface charge
P
annual precipitation, m/time; phosphorus
Pb
lead
PBDE
polybrominated diphenyl ethers
PCBs
polychlorinated biphenyls
PFOA
perfluorooctanoate
PFOS
perfluoroocotanesulfonate
PPA
Pollution Prevention Act
ppb
parts per billion
ppm
parts per million
PSD
prevention of significant deterioration
PZC
point of zero charge in clay titrations
PZSE
point of zero salt effect
Qe
the outlet or effluent flow of water from the lake or system (m3/time)
Qi
the inflow rate of the main river water or system, m3/time
Qtrib
the net inflow rate of water from all other tributaries, m3/time
Qw
the inflow rate of water or wastewater, m3/time
r
the spherical particle radius (length)
R
ideal gas law constant, with a variety of units; ion radius
rA
the rate of decrease in pollutant A concentration per unit volume of water (mass/length3‐time)
RCRA
Resource Conservation and Recovery Act
rf
the density of the fluid (mass/length3)
RfD
reference dose
RI‐FS
remedial investigation‐feasibility study
rs
the density of the spherical particle (mass/length3)
s
the slope or gradient of the stream bed
S
the suspended solids concentration (mass/length3)
SA
(cross) sectional area
SA
Risk: skin surface area available for contact (cm3)
SAP
sampling and analysis plan
SARA
Superfund Amendments and Reauthorization Act
SCRAM
support center for regulatory atmospheric modeling
SDWA
Safe Drinking Water Act
SIP
state implementation program(s)
SPARC
chemical parameter estimator software from EPA
SOD
sediment oxygen demand
SOx
a combination of sulfur dioxide and sulfur trioxide gases
images
chemical formula for sulfate
SWDA
Solid Waste Disposal Act
T
temperature
to
detention time of water or chemical in a system
TAN
Test Area North
TAN‐05
injection well (Test Area North)
TCE
trichloroethylene
TCLP
toxicity characteristic leaching procedure
TDS
total dissolved solids
TESS
threatened and endangered species system
TEA
terminal electron acceptor
THM
trihalomethane
TMDL
total maximum daily load
TRI
toxic release inventory
TSCA
Toxic Substances Control Act
TSS
total suspended solids
US EPA
United States Environmental Protection Agency
USGS
United States Geologic Survey
USTs
underground storage tanks
v
the frequency of light (1/s)
V
volume, in length3 or l
ω
settling velocity of a particle in natural water
w
average stream width
W
the mass input of pollutant to the lake (or system) per unit time, kg/time
WASP
water quality analysis simulation program
WES
Waterways Experiment Station of the Corps of Engineers
Z
charge of an ion
z/R
ionic potential (charge/radius)

Glossary

Adsorption
The process of accumulating an excess of a chemical on a surface. As used in this text, it refers to the concentrating of pollutant on a mineral or NOM‐coated mineral surface.
Advection
The transport of pollution in the direction of flow.
Anaerobic
An aquatic or atmospheric system that does not contain oxygen. This term is the same as anoxic.
Anoxic
Devoid of oxygen.
Abiotic reaction
A chemical reaction that takes place without the aid or in the complete absence of microorganisms.
Basel convention
An international treaty regulating the reporting, disposal, and transport of hazardous waste. The United States is currently not a member of this treaty.
Biota
Any living organism in an ecosystem.
Biotic reaction
A chemical reaction that occurs due to a microbial process (enzymes in the microbe cell).
BOD
Biochemical oxygen demand, the amount of dissolved oxygen required by microorganisms to oxidize organic matter present in the water.
Cation exchange
The concentration of sorbed cations that can be readily exchanged for other cations.
capacity (CEC)
Confined aquifer
An underground body of flowing water that is located below the layer of strata that is impermeable to water.
Conservative tracer
A chemical tracer that does not degrade and is not sorbed by anything in the water. The chemical moves freely with the water.
Contaminant
A chemical that is out of its proper place. In this text, we will use the term contaminant and pollutant interchangeable.
Dispersion
A mixing process resulting from advection which always dilutes the concentration of pollutant.
DNAPL
Dense nonaqueous phase liquid. An example is carbon tetrachloride.
DO
Dissolved oxygen; the concentration of dissolved oxygen in water, usually from 0 to 14 mg/l.
DOM
Dissolved organic matter. These are components of NOM that are soluble is water.
E
The longitudinal dispersion (eddy) coefficient for streams.
Environmental
A study required by the National Environmental Policy Act to attempt to determine if any adverse effects will occur from governmental actions such as the building of a building, plant, or even a remediation effort.
impact statement
Empirical
A relationship based on experiment data.
Epilimnion
The upper region of a stratified lake.
Eutrophication
An overproductive aquatic system. Excess alga growth occurs during the day due to the presence of excess nutrients, but during nighttime hours, the oxygen is depleted below levels that can support aerobic life.
Explanative modeling
A model that attempts to explain how something happened. For example modelers can use mathematical relationships to explain how a pollutant moved to where it is, where it originally came from, or how much pollutant was originally released.
Head
The height of a water column.
Hypolimnion
The lower or bottom region of a stratified lake.
LNAPL
Light nonaqueous phase liquid. An example is gasoline.
Longitudinal
The mixing of pollution in water or air in the direction of flow.
dispersion
Modeling
An attempt to explain a process in a simpler form. Models can take on several forms including physical models that are usually small‐scale versions of the real thing. We will limit our discussions in the text to mathematical models, which are very simple mathematical relations of more complicated processes. The more the terms we include in our models, the more the processes we account for in our model and theoretically, the more accurate our model will predict the real system.
NAPL
Nonaqueous phase liquid. An example would be oil or gasoline.
Nitrobenzene
A benzene molecule with an attached nitro (NO2) group. Nitrobenzenes can also have other functional groups such as methyl (CH3), chloro (Cl), and many other chemical groups attached to the benzene ring.
NOM
Natural organic matter. NOM results from the accumulation of degradation products from plants and animals in soil and water.
Nonpoint pollutant
A source of pollutant that cannot be identified as a specific location. Examples would be runoff from a large area of land such as a parking lot or agricultural setting and atmospheric inputs.
source
Partitioning
Partitioning is very similar to adsorption but does not involve a site‐specific reaction. It is more of a solvation or dissolving of a pollutant into NOM.
pC
A way of representing concentration units on the log scale. “p” stands for the negative log of anything. “C” stands for the concentration (in any units) of any chemical species.
pH
The negative low of the hydrogen ion concentration.
Point pollutant source
A source of pollution that can be pinpointed to a specific location. For example the output pipe from an industrial process or sewage treatment plant would be a point source.
Predictive modeling
A model that attempts to predict what will happen at a future time. For example, in this text, we are concerned with predicting the concentration of pollutant at some point (location or time) in the future.
Pulse or
A release of pollutant that occurs over a very short time scale and contains a finite volume or mass of pollutant. This type of release is in contrast to a step or continuous pollutant release.
instantaneous release of pollutant
Refractory pollutant
A pollutant that does not readily degrade (degrades slowly or not at all).
Remediate
To cleanup a waste site to acceptable pollutant concentrations.
Residence time
The average time a chemical spends in an environmental compartment. This can be obtained by dividing the volume of the compartment or mass of a chemical in a compartment by the outflow from the system (volume / volume per time = average residence time).
Sensitivity analysis

A process that results in two distinct layers of water in a lake system.

Stratification results due to heating of the surface water and cooling of lower waters by the Earth that sets up a density difference in the two bodies of water. The cool water settles to the bottom of the lake, while the warmer water is present at the surface.

Surface aquifer
The ground water closest to the land surface.
Step or continuous
A release of a pollutant that occurs over a long‐time scale. Examples include the constant release of sulfide from a pulp mill and the release of nitrate from a sewage treatment plant.
pollutant release
Vadose zone
The portion of the ground that is unsaturated with respect to water.
Variable
A symbol representing a mathematical term or the term of interest in a mathematical expression. For example, velocity is an important term in fate and transport, and it is represented by the variable, v.
Watershed
The drainage area of land surrounding and feeding water into a lake or river basin.