Title:Using nitrate to control microbially-produced hydrogen sulfide in oil field waters
Author(s):Eckford RE, Fedorak PM
Source:PETROLEUM BIOTECHNOLOGY: DEVELOPMENTS AND PERSPECTIVES STUDIES IN SURFACE SCIENCE AND CATALYSIS 151: 307-340 2004
Document Type:Article
Language:English
Cited References: 91Times Cited: 0
KeyWords Plus:SULFATE-REDUCING BACTERIA; RESERVOIR MODEL COLUMN; OXIDIZING BACTERIA; DESULFOVIBRIO-DESULFURICANS; PARACOCCUS-DENITRIFICANS; THIOSPHAERA-PANTOTROPHA; PETROLEUM RESERVOIRS; REDUCTION; NITRITE; INHIBITION
Addresses:Eckford RE (reprint author), Univ Alberta, Dept Biol Sci, Edmonton, ABT6G 2E9Canada
Univ Alberta, Dept Biol Sci, Edmonton, ABT6G 2E9Canada
Publisher:ELSEVIER SCIENCE BV, SARA BURGERHARTSTRAAT 25, POBOX 211, 1000 AE AMSTERDAM, NETHERLANDS
IDS Number:BBL10
ISSN:0167-2991
WE might have concern about using bromide as a tracer at our site as seen in this next article
Title:Effects of bromide on the formation of THMs and HAAs
Author(s):Chang EE, Lin YP, Chiang PC
Source:CHEMOSPHERE 43 (8): 1029-1034 JUN 2001
Document Type:Article
Language:English
Cited References: 12Times Cited: 4
Abstract:The role of bromide in the formation and speciation of disinfection by-products (DBPs) during chlorination was investigated. The molal ratio of applied chlorine to bromide is an important factor in the formation and speciation of trihalomethanes (THMs) and halogenacetic acids (HAAs). A good relationship exists between the molar fractions of THMs and the bromide incorporation factor. The halogen substitution ability of HOBr and HOCl during the formation of THMs and HAAs can be determined based on probability theory. The formation of HAAs, and their respective concentrations. can also be estimated through use of the developed model. (C) 2001 Elsevier Science Ltd. All rights reserved.
Author Keywords:bromide; chlorination; trihalomethanes; haloacetic acids
KeyWords Plus:ION; CHLORINATION; SPECIATION
Addresses:Chang EE (reprint author), Taipei Med Coll, Dept Biochem, 250 Wu Hsing St, Taipei, 105 Taiwan
Taipei Med Coll, Dept Biochem, Taipei, 105 Taiwan
Natl Taiwan Univ, Grad Inst Environm Engn, Taipei, 10764 Taiwan
Publisher:PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Subject Category:ENVIRONMENTAL SCIENCES
IDS Number:430YY
Title:Use of slow filtration columns to assess oxygen respiration, consumption of dissolved organic carbon, nitrogen transformations. and microbial parameters in hyporheic sediments
Author(s):Mermillod-Blondin F, Mauclaire L, Montuelle B
Source:WATER RESEARCH 39 (9): 1687-1698 MAY 2005
Document Type:Article
Language:English
Cited References: 36Times Cited: 0
Abstract:Biogeochemical processes mediated by microorganisms in river sediments (hyporheic sediments) play a key role in river metabolism. Because biogeochemical reactions in the hyporheic zone are often limited to the top few decimetres of sediments below the water-sediment interface, slow filtration columns were used in the present study to quantify biogeochemical processes (uptakes of O-2, DOC, and nitrate) and the associated microbial compartment (biomass, respiratory activity, and hydrolytic activity) at a centimetre scale in heterogeneous (gravel and sand) sediments. The results indicated that slow filtration columns recreated properly the aerobic-anaerobic gradient classically observed in the hyporheic zone. O-2 and NO3- consumptions (256 +/- 13 mu g of O-2 per hour and 14.6 +/- 6.1 mu g of N-NO3- per hour) measured in columns were in the range of values measured in different river sediments. Slow filtration columns also reproduced the high heterogeneity of the hyporheic zone with the presence of anaerobic pockets in sediments where denitrification and fermentation processes occurred. The respiratory and hydrolytic activities of bacteria were strongly linked with the O-2 consumption in the experimental system, highlighting the dominance of aerobic processes in our river sediments. In comparison with these activities, the bacterial biomass (protein content) integrated both aerobic and anaerobic processes and could be used as a global microbial indicator in our system. Finally, slow filtration columns are an appropriate tool to quantify in situ rates of biogeochemical processes and to determine the relationship between the microbial compartment and the physico-chemical environment in coarse river sediments. (c) 2005 Elsevier Ltd. All rights reserved.
Author Keywords:hyporheic sediments; microbial activities; biogeochemical processes; slow filtration columns; respirations
KeyWords Plus:BIOGEOCHEMICAL PROCESSES; NITRATE AMMONIFICATION; MARINE-SEDIMENTS; RIVER SEDIMENTS; MOUNTAIN STREAM; ZONE; MATTER; WATER; GROUNDWATER; DYNAMICS
Addresses:Mermillod-Blondin F (reprint author), Univ Lyon 1, CNRS, UMR 5023, 43 Bd 11 Novembre 1918, Villeurbanne, F-69622 France
Univ Lyon 1, CNRS, UMR 5023, Villeurbanne, F-69622 France
Swiss Fed Inst Technol, Inst Geol, Zurich, CH-8092 Switzerland
CEMAGREF, Equipe Ecol Microbienne Hydrosyst Anthropises, Unite Rech Qual Eaux & Prevent Pollut, Lyon, F-69336 France
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Title:Field studies of in situ colloid mobilization in a Southeastern Coastal Plain aquifer
Author(s):Swartz CH, Gschwend PM
Source:WATER RESOURCES RESEARCH 35 (7): 2213-2223 JUL 1999
Document Type:Article
Language:English
Cited References: 42Times Cited: 4
Abstract:The release of colloids to groundwater was investigated in situ in an iron-oxyhydroxide-rich, sandy aquifer. Groundwater amended with various solutes was injected into and immediately withdrawn from the shallow aquifer. Turbidity and colloid composition were monitored in the retrieved injectate. The response of the aquifer material to the amendments generally mimicked that observed in an earlier study using packed columns containing the sediment, demonstrating the viability of the single-well method for testing colloid mobilization in situ. The decline of turbidity in the retrieved injectates with increasing withdrawal volume was analyzed to determine a "reaction order" n, describing the redeposition of mobilized colloids to the immobile matrix, Differences in the reaction order for the amendments tested presumably indicated the effectiveness of these amendments to generate repulsive colloid-immobile matrix interactions.
KeyWords Plus:NATURAL ORGANIC-MATTER; POROUS-MEDIA; SANDY AQUIFER; FACILITATED TRANSPORT; IRON-OXIDE; FLOW CONDITIONS; GROUNDWATER; PARTICLES; MOBILITY; RELEASE
Addresses:Swartz CH (reprint author), MIT, Ralph M Parsons Lab, Bldg 48-415, Cambridge, MA 02139 USA
MIT, Ralph M Parsons Lab, Cambridge, MA 02139 USA
Publisher:AMER GEOPHYSICAL UNION, 2000 FLORIDA AVE NW, WASHINGTON, DC20009USA
Subject Category:ENVIRONMENTAL SCIENCES; LIMNOLOGY; WATER RESOURCES
IDS Number:211DV
ISSN:0043-1397
Title:Fate of environmental pollutants
Author(s):Darnault C
Source:WATER ENVIRONMENT RESEARCH 76 (6): 2297-2344 2004
Document Type:Article
Language:English
Cited References: 94Times Cited: 0
Abstract:This section covers studies published during the calendar year 2003 on the fate of environmental pollutants in soil, groundwater and surface water resources. Studies related to water quality and sources of pollution by environmental pollutants as well as reaction kinetics and modeling are reviewed in detail. Also included in the coverage of the present review is research on pollutants such as nutrients, xenobiotics, pathogens, metals, and radionuclides.
KeyWords Plus:HEAVY-METAL CONCENTRATIONS; ORGANIC-COMPOUNDS VOCS; UNITED-STATES; OVERLAND-FLOW; ARTIFICIAL RADIONUCLIDES; CRYPTOSPORIDIUM-PARVUM; NITRATE CONTAMINATION; CONSTRUCTED WETLAND; POTENTIAL POLLUTION; NUTRIENT MANAGEMENT
Addresses:Darnault C (reprint author), Environm Engn & Technol Inc, Water Resources Grp, 712 Gum Rock Court, Newport News, VA23606USA
Environm Engn & Technol Inc, Water Resources Grp, Newport News, VA23606USA
E-mail Addresses:
Publisher:WATER ENVIRONMENT FEDERATION, 601 WYTHE ST, ALEXANDRIA, VA22314-1994USA
Subject Category:ENGINEERING, ENVIRONMENTAL; ENVIRONMENTAL SCIENCES; LIMNOLOGY; WATER RESOURCES
IDS Number:905DM
ISSN:1061-4303
Title:Kinetic formulation of oxygen consumption and denitrification processes in soil
Author(s):Cho CM, Burton DL, Chang C
Source:CANADIAN JOURNAL OF SOIL SCIENCE 77 (2): 253-260 MAY 1997
Document Type:Article
Language:English
Cited References: 13Times Cited: 6
Abstract:A kinetic expression for oxygen, nitrate, nitrite and nitrous oxide reduction in soil was developed. The formulation was based on competitive Michaelis-Menten kinetics for a steady microbial population whose respiratory activity was assumed to be constant so that the number of electrons produced per unit of time was constant. Competition among the electron accepters was characterized by their affinity toward the electron and by their concentration. Several different Values for the affinity coefficients were used to simulate the concentration of O-2, NO3-, NO2-, N2O and N-2 at various times. When relative magnitudes of affinity coefficients were chosen to be 100 000, 1, 100 and 0.1, for O-2, NO3-, NO2- and N2O, respectively, the temporal plot of concentration showed that the disappearance of O-2 and NO3- was zero order. The accumulation of NO2- was very small and it was rapidly reduced to N2O. The production rate of N2O was nearly zero order but the magnitude of the rate was rather small as opposed to the rate of disappearance of NO3-. The reduction of N2O to N-2 took place only after NO3- had almost disappeared. With these competition parameters NO3- was stable in the presence of O-2. The reduction of N2O was also very much retarded in the presence of NO3-. NO2- was relatively unstable, even in the presence of O-2, and it was further reduced to N2O. With the relative magnitude of the chosen affinity coefficients, the kinetic formulation effectively simulated the ''inhibitory'' effect of O-2 upon the denitrification process, and the ''inhibitory'' effect of NO3- and NO2- upon the reduction of N2O to N-2.
Author Keywords:oxygen consumption; denitrification; kinetics; competition
KeyWords Plus:NITROUS-OXIDE; NITRIC-OXIDE; NITRATE; MICROORGANISMS; DINITROGEN; REDUCTION
Addresses:Cho CM (reprint author), UNIV MANITOBA, DEPT SOIL SCI, WINNIPEG, MBR3T 2N2CANADA
AGR CANADA, RES STN, LETHBRIDGE, ABT1J 4B1CANADA
Publisher:AGR INST CANADA, SUITE 907 151 SLATER ST, OTTAWA ON K1P 5H4, CANADA
Subject Category:AGRICULTURE, SOIL SCIENCE
Title:Riverbankfiltration: Induced infiltration and groundwater quality
Author(s):Gollnitz WD, Whitteberry BL, Vogt JA
Source:JOURNAL AMERICAN WATER WORKS ASSOCIATION 96 (12): 98-110 DEC 2004
Document Type:Article
Language:English
Cited References: 19Times Cited: 0
Abstract:Riverbankfiltration relies on the stream bed and aquifer matrixes to reduce pathogens under varying conditions of induced infiltration resulting from changes in river stage and flow velocity. The Greater Cincinnati (Ohio) Water Works monitored hydrologic parameters and water quality at its Charles M. Bolton Well field during a comprehensive flowpath study. The study determined the frequency of occurrence of high river-stage events from historical data and monitored hydrologic parameters to estimate the potential unit infiltration rate. Giardia, Cryptosporidium, algae, spores, particle counts, and turbidity were also monitored. The project investigated potential pathogen/surrogate breakthrough during several high river-stage and infiltration events. High-stage events occurred less than 4% of the time. Giardia and Cryptosporidium were not detected in any groundwater samples. Increases in surrogate concentrations were minimal and maintained > 3.5-log reduction. The streambed and aquifer have the ability to buffer water quality effects from major increases in the infiltration rate.
Addresses:Gollnitz WD (reprint author), GCWW, 5651 Kellogg Ave, Cincinnati, OH45228USA
GCWW, Cincinnati, OH45228USA
E-mail Addresses:
filtrated water is an important component of the drinking water production, In this case, most of the water pumped from the alluvial aquifers originates from the adjacent river. Bank filtration is generally considered beneficial both quantitatively and qualitatively. However, in some cases bank filtration ran cause deleterious effects to groundwater quality. This paper describes such a case, focusing on ammonium (NH4) concentrations. The data were gathered at an experimental bank-filtration site which is part of a large well field along the SeineRiver (France). At this site, groundwater was sampled along a how line path and pore water of river bed sediments was collected with peepers or by centrifuging core samples. The pore waters of the superficial river bed sediments have high ammonium concentrations (>30 mg NH4 L-1) whereas, in the groundwater, these concentrations are lower (less than or equal to 20 mg NH4 L-1), with higher concentrations near the bank. The high NH4 concentration in the sediment is related to the heavy organic load in the river and the mineralization of this organic matter by benthic microflora. Among the different mechanisms that influence NH4 transport and retention in the porous medium, it emerges that sorption by the alluvial sediments (K-d approximate to 1 - 10 x 10(-3) m(3) kg(-1)), or even the chalk (K-d approximate to 48 x 10(-3) m(3) kg(-1)) seems to be effective in retaining NH4, This is illustrated by a model of NH4 transfer with retardation adapted to the conditions of
Title:Reductive dissolution of Mn oxides in river-recharcred aquifers: a laboratory column study
Author(s):Petrunic BM, MacQuarrie KTB, Al TA
Source:JOURNAL OF HYDROLOGY 301 (1-4): 163-181 JAN 20 2005
Document Type:Article
Language:English
Cited References: 41Times Cited: 0
Abstract:River-recharged aquifers are developed for drinking water supplies in many parts of the world. Often. however. dissolved organic carbon (DOC) present in the infiltrating river water causes biogeochemical reactions to occur in the adjacent aquifer that create elevated Mn and Fe. Mn concentrations in groundwater from some of the production wells installed in the aquifer at Fredericton, New Brunswick exceed the Canadian Drinking Water Guideline of 9.1 x 10(-4) mmol/l by up to 5.5 x 10(-2) mmol/l has previously been hypothesized that the influx of DOC from the Saint John River is causing bacterially mediated reductive dissolution of Mn oxides in the aquifer system, leading to elevated aqueous Mn concentrations. Previous work was limited to the collection of water samples from production wells and several observation wells installed in the glacial ourwash aquifer. The objective of this study was to investigate the biogeochemical controls on Mn concentrations using sand-filled columns. One column was inoculated with bacteria while a second column was treated with ethanol in order to decrease the microbial population initially present in the system. Both columns received the same influent solution that contained acetate as a source of DOC. The results of the experiments suggested that the two main controls on Mn concentrations in the columns were microbially mediated reductive dissolution of Mn oxides and cation exchange. The conceptual model that was developed based on the experimental data was supported by the results obtained using a one-dimensional reactive-transport model. The reductive dissolution of Mn oxides in the aquifer sands could be adequately simulated using dual-Monod kinetics. Similar trends are observed in the experimental data and field data collected from Production Well 5. located in the Fredericton Aquifer. From the experiments. it is evident that cation-exchange reactions may be an important geochemical control on Mn concentrations during the initial stages of pumping: however. the reductive dissolution of Mn oxides may represent a long-term source of Mn in the drinking water supply. (C) 2004 Elsevier B.V. All rights reserved.
Author Keywords:river-recharged aquifer; column studies; manganese; reductive dissolution; kinetics
KeyWords Plus:DISSIMILATORY REDUCTION; MANGANESE REDUCTION; ELECTRON-ACCEPTOR; ALLUVIAL AQUIFER; BANK FILTRATION; GROUNDWATER; IRON; INFILTRATION; TRANSPORT; WATER
Addresses:Petrunic BM (reprint author), Univ New Brunswick, Dept Geol, POB 4400, Fredericton, NB E3B 5A3 Canada
Univ New Brunswick, Dept Geol, Fredericton, NB E3B 5A3 Canada
Univ New Brunswick, Dept Civil Engn, Fredericton, NB E3B 5A3 Canada
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Title:Investigating the influence of treated sewage on groundwater and surface water using wastewater indicators in Berlin, Germany
Author(s):Massmann G, Knappe A, Richter D, Pekdeger A
Source:ACTA HYDROCHIMICA ET HYDROBIOLOGICA 32 (4-5): 336-350 NOV 2004
Document Type:Article
Language:English
Cited References: 27Times Cited: 0
Abstract:Around 70% of Berlin's drinking water derives from bank filtration or artificial recharge. A major advantage of bank filtration is the capability of the subsurface to remove contaminants and save natural groundwater resources. Because the surface water contains elevated amounts of treated sewage, Berlin's system is a semi-closed water cycle relying partly on indirect wastewater reuse. A number of wastewater residues can be traced in the groundwater and serve as a tool to characterise the bank filtration systems. Conservative tracers such as some wastewater indicators and stable isotopes are used to estimate flow velocities and proportions of bank filtrate in the abstraction wells prior to reactive transport evaluations. Examples of tracer applications in the Berlin system are presented in this paper. In addition, an overview is given of results of various studies conducted on contaminant transport and their removal during underground passage of the bank filtrate in Berlin.
Author Keywords:bank filtration; clogging layer; drinking water; treated wastewater; gadolinium; wastewater reuse
KeyWords Plus:GADOLINIUM
Addresses:Massmann G (reprint author), Free Univ Berlin, Fachbereich Geowissensch Arbeitsbereich Hydrol, Malteserstr 74-100, Berlin, D-12249 Germany
Free Univ Berlin, Fachbereich Geowissensch Arbeitsbereich Hydrol, Berlin, D-12249 Germany
Alfred Wegener Inst Polar & Marine Res, Potsdam, D-14443 Germany
E-mail Addresses:
Title:BIOGEOCHEMICAL PROCESSES DURING THE INFILTRATION OF RIVER WATER INTO AN ALLUVIAL AQUIFER
Author(s):BOURG ACM, BERTIN C
Source:ENVIRONMENTAL SCIENCE & TECHNOLOGY 27 (4): 661-666 APR 1993
Document Type:Article
Language:English
Cited References: 22Times Cited: 39
Abstract:Biogeochemical processes occurring during infiltration of surface water from the LotRiver into an alluvial aquifer are described using chloride as a natural tracer of water mixing in a well field where a Cl- rich aquifer water is recharged with a Cl--poor river water. Near the river bank a slightly reduced zone (depleted in O2, DOC, NO3, Na, and K and enriched in Mn, Ca, Mg, bicarbonate, and silica) is observed. Sulfate behaves conservatively. Nearest to the infiltration zone some of the pH-regulating processes are not at equilibrium. These phenomena can all be explained by bacterial degradation of organic matter in the river bank sediments and weathering of minerals along the infiltration path. In some cases (degradation of DOC and dissolution of calcium and magnesium carbonates) a semiquantitative confirmation of the stoichiometry of the reactions is given. Zinc is efficiently filtered after the first 10-15 m of the bank sediment-alluvion system. Some chemical changes occurring in the reduced zones are reversible (depletion of dissolved oxygen, dissolution of Mn). Others are not.
KeyWords Plus:GROUNDWATER; SWITZERLAND