Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    SATEM 2002: software for aquifer test evaluation
    Boonstra, J. ; Kselik, R.A.L. - \ 2001
    Wageningen : ILRI (ILRI publication 57) - ISBN 9789070754549 - 148
    watervoerende lagen - grondwaterstroming - permeabiliteit - modellen - pompproeven - bodemfysica - grondwater - hydrologie - software - aquifers - groundwater flow - permeability - models - pumping tests - software
    Transport of nonlinearly biodegradable contaminants in aquifers
    Keijzer, H. - \ 2001
    Wageningen University. Promotor(en): S.E.A.T.M. van der Zee. - S.l. : S.n. - ISBN 9789058083395 - 134
    besmetters - watervoerende lagen - biodegradatie - bioremediëring - contaminants - aquifers - biodegradation - bioremediation

    This thesis deals with the transport behavior of nonlinearly biodegradable contaminants in aquifers. Such transport occurs during in situ bioremediation which is based on the injection of an electron acceptor or electron donor. The main interests in this thesis are the mutual influences of underlying processes, i.e. transport, adsorption and biodegradation, and their influence on in situ bioremediation performance. To gain insight in these influences, the processes in a homogeneous aquifer are studied. Subsequently, the effect of physical heterogeneity of an aquifer on the displacement of the biodegradable contaminant is examined.

    Considering a homogeneous aquifer, numerical simulations are performed to ascertain the effect of transport, adsorption and biodegradation on the displacement of the contaminant and of the electron acceptor or electron donor. In the initial phase, the developed numerical results are successfully described by first order degradation. In the final phase, the numerical results show a traveling wave behavior; the developed concentration fronts have constant front shapes and 'travel' with a constant velocity through the aquifer. This behavior is due to the balance between the steepening effect of nonlinear biodegradation and the spreading effect of dispersion. Because of this traveling wave behavior, semi-analytical solutions have been derived that satisfactorily approximate the numerical results. These semi-analytical solutions are used to assess the performance of the in situ bioremediation. If in situ bioremediation is applied to a polluted site, the electron acceptor injection concentration and the injection velocity will be the only manipulative properties. By varying these two properties, the in situ bioremediation performance can be influenced and optimized.

    To study a physical heterogeneous aquifer, the hydraulic conductivity is considered spatially variable and it is assumed to be a random space function. The effect of physical heterogeneity is determined using a Lagrangian stochastic approach. Results show that incorporation of physical heterogeneity leads to a spreading of the breakthrough curve of both the contaminant and the electron acceptor or electron donor. In case of a large degree of heterogeneity, i.e. a strongly heterogeneous aquifer, it is the heterogeneity which determines the shape of the breakthrough curve and not the dispersion or nonlinear biodegradation.

    Results of Aquifer Test Analyses of the Fordwah Eastern Sadiqia (South) Project, Bahawalnagar
    Boonstra, J. ; Javed, I. - \ 1999
    Lahore : IWASRI - 102
    grondwater - watervoerende lagen - pakistan - pompproeven - groundwater - aquifers - pakistan - pumping tests
    Improved parameter estimation for hydrological models using weighted object functions
    Stein, A. ; Zaadnoordijk, W.J. - \ 1999
    Hydrological Processes 13 (1999). - ISSN 0885-6087 - p. 1315 - 1328.
    hydrologie - modellen - kalibratie - watervoerende lagen - geohydrologie - zuid-holland - hydrology - models - calibration - aquifers - geohydrology - zuid-holland
    This paper discusses the sensitivity of calibration of hydrological model parameters to different objective functions. Several functions are defined with weights depending upon the hydrological background. These are compared with an objective function based upon kriging. Calibration is applied to piezometric readings from the Isle of Goeree in the Netherlands. For a study on the permeability of the first aquifer, the kriging predictor yields weights that differ from using prior knowledge, and emphasizes more strongly spatially isolated points than commonly applied objective functions. It reduces the range of differences between measurements and model simulations, but the mean absolute error increases. For a study on the resistance of the top layer and of the aquitard, use of prior information in the objective functions leads to a reduction in standard deviations of the differences between measured and calculated values by 40-80%
    Analytical approximation to characterize the performance of in situ aquifer bioremediation
    Keijzer, H. ; Dijke, M.I.J. van; Zee, S.E.A.T.M. van der - \ 1999
    Advances in Water Resources 23 (1999). - ISSN 0309-1708 - p. 217 - 228.
    bioremediëring - watervoerende lagen - besmetters - verwijdering - modellen - grondwaterverontreiniging - geohydrologie - bioremediation - aquifers - contaminants - removal - models - groundwater pollution - geohydrology
    Characteristic regimes for in-situ bioremediation of aquifers by injecting water containing an electron acceptor.
    Keijzer, H. ; Zee, S.E.A.T.M. van der; Leijnse, A. - \ 1998
    Computational Geosciences 2 (1998). - ISSN 1420-0597 - p. 1 - 22.
    bioremediëring - watervoerende lagen - simulatiemodellen - grondwaterverontreiniging - geohydrologie - bioremediation - aquifers - simulation models - groundwater pollution - geohydrology
    Geohydrologisch veldonderzoek in het Purmerbos : uitwerkingen en interpretatie van doorlatendheidsmetingen en pompproeven
    Gaast, J.W.J. van der; Peerboom, J.M.P.M. - \ 1996
    Wageningen : DLO-Staring Centrum (Rapport / DLO-Staring Centrum 437) - 65
    watervoerende lagen - conservering - milieubescherming - bosbouw - bossen - permeabiliteit - gesteenten - nederland - noord-holland - pompproeven - aquifers - conservation - environmental protection - forestry - forests - permeability - rocks - netherlands - noord-holland - pumping tests
    Klimaatregeling met koude-opslag in vleesvarkensstallen
    Verdoes, N. ; Telle, M.G. ; Mouwen, I.A.A.C. ; Tuinte, J.H.G. ; Vrielink, M.G.M. ; Brakel, C.E.P. van - \ 1996
    Rosmalen : Praktijkonderzoek varkenshouderij (Proefverslag / Praktijkonderzoek Varkenshouderij P1.161) - 40
    energie - opslag - geothermische energie - watervoerende lagen - varkensstallen - afmesten - varkens - nederland - energy - storage - geothermal energy - aquifers - pig housing - finishing - pigs - netherlands
    Intreeweerstanden waterlopen; inventarisatie en analyse
    Jousma, G. ; Massop, H.T.L. - \ 1996
    Delft : TNO (TNO - rapport GG-R-96-15(A)) - 135
    watervoerende lagen - grondwateraanvulling - hydraulisch geleidingsvermogen - infiltratie - permeabiliteit - drainage door leidingen - gesteenten - kwel - buisdrainage - intreeweerstand - pompproeven - aquifers - groundwater recharge - hydraulic conductivity - infiltration - permeability - pipe drainage - rocks - seepage - tile drainage - entrance resistance - pumping tests
    Het inventarisatie-onderzoek Intreeweerstanden Waterlopen is te beschouwen als het belangrijkste researchdeel van het Project 'Informatiesysteem Ontwateringsstelsels'. Dit project had tot doel de criteria te onderzoeken voor het vastleggen van met name de tertiaire ontwateringsstelsels in een landsdekkend informatiesysteem ten behoeve van geohydrologisch (model)onderzoek.
    Ecohydrology in the Netherlands: principles of an application-driven interdiscipline
    Grootjans, A.P. ; Wirdum, G. van; Kemmers, R.H. ; Diggelen, R. van - \ 1996
    Acta botanica neerlandica 45 (1996). - ISSN 0044-5983 - p. 491 - 516.
    watervoerende lagen - bibliografieën - chemische eigenschappen - ecologie - grondwater - hydrologie - landschap - landschapsecologie - nederland - ecohydrologie - aquifers - bibliographies - chemical properties - ecology - groundwater - hydrology - landscape - landscape ecology - netherlands - ecohydrology
    Doorlatendheidsmetingen: absolute noodzaak of luxe uit het verleden?
    Pomper, A.B. ; Weerts, H.J.T. - \ 1996
    Stromingen : vakblad voor hydrologen 2 (1996)1. - ISSN 1382-6069 - p. 27 - 37.
    watervoerende lagen - permeabiliteit - gesteenten - pompproeven - aquifers - permeability - rocks - pumping tests
    De bepaling van de doorlatendheid van zandpakketten houdt de gemoederen van hydrologen al meer dan een eeuw bezig. Vele bepalingsmethoden zijn in die tijd ontwikkeld. Sommige geven een globale waarde, toepasbaar in grootschalige modellen; andere gevenwaarden die meer voor lokale problemen geschikt zijn. Dit artikel geeft een overzicht van de bestaande methoden. De vraag wordt gesteld of in een tijd van krappe financiële mogelijkheden het verantwoord is dergelijk kostbaar onderzoek uit te voeren. Het artikel richt zich op een discussie tussen de instanties die zich met dergelijk onderzoek bezighouden, met als doel een betere afstemming van het onderzoek en de uitwisselbaarheid van de resultaten.
    Schatting van doorlaatfaktoren (k-waarden) aan de hand van in boorarchieven aanwezige boorbeschrijvingen
    Pomper, A.B. - \ 1996
    Stromingen : vakblad voor hydrologen 2 (1996)4. - ISSN 1382-6069 - p. 37 - 46.
    watervoerende lagen - permeabiliteit - gesteenten - pompproeven - aquifers - permeability - rocks - pumping tests
    In het verleden werden tijdens het beschrijven van boormonsters verschillende parameters geschat waarmee het specifiek oppervlak van zandige monsters kan worden vastgesteld. Vervolgens werden met tabellen doorlatendheden berekend. Later werden ook bestaande boorbeschrijvingen van deze geschatte waarden voorzien. Met de aldus verkregen doorlatendheidscijfers kunnen gemeten waarden van ver uit elkaar gelegen meetpunten worden gecorreleerd. De boorbeschrijvingen uit de jaren zeventig zijn opnieuw bestudeerd om een trend in de bijgeschreven parameters te kunnen vinden. Het resultaat werd vastgelegd in tabellen.
    Advective - dispersive contaminant transport towards a pumping well
    Kooten, J.J.A. van - \ 1996
    Agricultural University. Promotor(en): J. Grasman; M. de Gee. - S.l. : Van Kooten - ISBN 9789054854722 - 120
    milieu - grondwater - watervoerende lagen - computersimulatie - simulatie - simulatiemodellen - waterkwaliteit - verontreinigingsbeheersing - grondwaterverontreiniging - bescherming - grondwaterstroming - modellen - permeabiliteit - gesteenten - colloïden - dispersie - pompproeven - environment - groundwater - aquifers - computer simulation - simulation - simulation models - water quality - pollution control - groundwater pollution - protection - groundwater flow - models - permeability - rocks - colloids - dispersion - pumping tests

    In this thesis we describe an analytical approximation method for predicting the advective- dispersive transport of a contaminant towards a pumping well. The groundwater flow is assumed to be stationary and essentially horizontal. Due to dispersion contaminant transport is a stochastic process. We derive approximations for the arrival probability (or fraction) of particles at a well, for the mean and variance of the arrival time and for the arrival time distribution at a well. The advective flow yields first order approximations. The effect of longitudinal dispersion is included by expanding the first and second moment of the arrival time in power series of the longitudinal dispersion coefficient. Transversal dispersion only plays a crucial role near the separating streamlines bounding the catchment area of a well. Its effect is analyzed locally with boundary layer techniques. The incorporation of linear equilibrium adsorption and first order decay is rather straightforward. The asymptotic approximations are compared with the results of random walk simulations.

    A self-contained part of this thesis is devoted to the transport of a kinetically adsorbing contaminant. We show that once the transport of a non-adsorbing contaminant has been computed, the effect of first order kinetics can be incorporated naturally by utilizing a stochastic description of the residence time of particles in the free phase.

    The results of our research have been implemented in the software package ECOWELL. The input of ECOWELL consists of a head field generated with a numerical flow model. The technical documentation of ECOWELL is part of this thesis. The use of ECOWELL is demonstrated in a case study.

    A new mathematical method to predict groundwater quality in pumping wells.
    Kooten, J.J.A. van; Grasman, J. ; Gee, M. de - \ 1995
    Acta Universitatis Carolinae, Geologica 39 (1995). - p. 243 - 254.
    analogen - watervoerende lagen - grondwaterwinning - grondwaterverontreiniging - horizontale bronnen - hydrologie - modellen - verontreinigingsbeheersing - bescherming - waterkwaliteit - analogues - aquifers - groundwater extraction - groundwater pollution - horizontal wells - hydrology - models - pollution control - protection - water quality
    Eco-hydrologische systeembeschrijving van het landgoed "De Wildenborch"
    Jansen, P.C. ; Kemmers, R.H. ; Mekkink, P. - \ 1994
    Wageningen : DLO-Staring Centrum (Rapport / DLO-Staring Centrum 296) - 125
    ecologie - hydrologie - bodemkarteringen - kaarten - watervoerende lagen - tuinen - parken - landgoederen - particulier eigendom - nederland - ecohydrologie - gelderland - achterhoek - ecology - hydrology - soil surveys - maps - aquifers - gardens - parks - estates - private ownership - netherlands - ecohydrology - gelderland - achterhoek
    Bodemkundig - hydrologisch onderzoek in de omgeving van de winplaats Breehei : de bodemgesteldheid en de huidige hydrologische situatie
    Stoffelsen, G.H. - \ 1994
    Wageningen : DLO-Staring Centrum (Rapport / DLO-Staring Centrum 326) - 68
    watervoerende lagen - grondwaterwinning - grondwaterstroming - horizontale bronnen - kaarten - modellen - regulatie - bodemkarteringen - bodemwater - nederland - waterstand - limburg - aquifers - groundwater extraction - groundwater flow - horizontal wells - maps - models - regulation - soil surveys - soil water - netherlands - water level - limburg
    Elektromagnetische metingen voor het bepalen van de diepte tot hydrologisch slecht doorlatende lagen : een statistische en ruimtelijke analyse van hydrologisch slecht doorlatende bodemlagen, gebruikmakend van niet - destructieve elektromagnetische meetmethoden
    Gaast, J.W.J. van der; Bolhuis, M. van - \ 1994
    Wageningen : DLO-Staring Centrum (Rapport / DLO-Staring Centrum 321)
    watervoerende lagen - elektrische geleiding - elektrische eigenschappen - hydraulisch geleidingsvermogen - infiltratie - magnetische eigenschappen - permeabiliteit - gesteenten - kwel - bodem - bodemprofielen - nederland - niet-destructief testen - drenthe - gelderland - pompproeven - aquifers - electrical conductance - electrical properties - hydraulic conductivity - infiltration - magnetic properties - permeability - rocks - seepage - soil - soil profiles - netherlands - nondestructive testing - drenthe - gelderland - pumping tests
    Stikstofverliezen door beweiding.
    Oomen, G.J.M. ; Baars, T. ; Dongen, M. van - \ 1994
    Ekoland 14 (1994)2. - ISSN 0926-9142 - p. 14 - 15.
    alternatieve landbouw - watervoerende lagen - milieu - graslanden - grondwater - uitspoelen - stikstof - biologische landbouw - bodem - alternative farming - aquifers - environment - grasslands - groundwater - leaching - nitrogen - organic farming - soil
    Relationships between nitrogen production in continuous grassland and grass-clover leys with nitrogen uptake by cattle and nitrogen leaching are described. Consequenses for farm management which limits leaching are discussed
    Verslag van de excursie hydrogeologie naar Engeland, van 20 tot en met 26 september 1992
    Tiemensma, H.A. - \ 1993
    Wageningen : Landbouwuniversiteit Wageningen (Rapport / Landbouwuniversiteit, Vakgroep Waterhuishouding 39) - 63
    watervoerende lagen - engeland - onderzoek - aquifers - england - research
    Biogeochemical aspects of aquifer thermal energy storage
    Brons, H.J. - \ 1992
    Agricultural University. Promotor(en): A.J.B. Zehnder. - S.l. : Brons - 127
    watervoerende lagen - geothermische energie - energie - opslag - grondwater - eigenschappen - biogeochemie - aquifers - geothermal energy - energy - storage - groundwater - properties - biogeochemistry

    During the process of aquifer thermal energy storage the in situ temperature of the groundwater- sediment system may fluctuate significantly. As a result the groundwater characteristics can be considerably affected by a variety of chemical, biogeochemical and microbiological reactions. The interplay of these reactions may have a negative influence on the operational performance of ATES-systems. The objective of this thesis was to investigate bacterial clogging processes and the biogeochemical aspects of carbonate and iron precipitation in aquifer material obtained from ATES test facilities.

    In the General Introduction presented in Chapter 1 the principle of aquifer thermal energy storage is briefly outlined first. This is followed by more detailed information on the thermodynamics of biogeochemical reactions and the conceivable changes in groundwater characteristics during aquifer thermal energy storage. Chapter 2 reports on some microbiological aspects of well clogging during aquifer thermal energy storage. In column experiments well clogging was simulated using aquifer material from a heat storage site and synthetic groundwater. The well clogging potential of oxic and anoxic column effluents was studied at 10° and 30°C using a hollow fiber membrane from which slime depositions were recovered. Only under oxic conditions a slight increase in slime deposition was observed after a temperature rise from 10° to 30°C. No significant difference in bacterial plate counts was measured in oxic and anoxic column effluents, despite the increase in dissolved organic material concentrations at elevated temperatures. This organic material was mobilized from the soil particular organic carbon fraction. The biologically available organic carbon concentration was less than 1% of the dissolved organic carbon concentration, which was not enough to allow excessive bacterial growth or slime formation. Chapter 3 reports on the thermal mobilization of dissolved organic carbon and the concomitant carbon dioxide production in aquifer material from a heat storage site. These processes have been quantified aerobically and anaerobically within a temperature range of 4° to 95°C in sediment samples containing either quartz-rich coarse sand or peaty clay. At temperatures above 450C dissolved organic carbon compounds, including fulvic acids, were mobilized from both sediments resulting in a substantial increase in the chemical oxygen demand of the water phase. Complexation of calcium and magnesium by fulvic acids resulted in the super -saturation of the water phase with regard to calcite and dolomite and thus prevented the precipitation of these carbonates. The highest rates of carbon dioxide release were measured during the first four days of incubation. Aerobically, the maximum rate Of C0 2 production varied between 35 and 800 (sand) or 15 and 150 (peaty clay) μmol C0 2 per gram volatile solids per day. Anaerobically, the rates were 25 and 500 (sand) or 10 and 110 (peaty clay) μmol C0 2 per gram volatile solids per day. At temperatures above 55°C, C0 2 was produced purely chemically. Chapter 4 deals with ferric iron precipitation in anaerobic Tris-HCl buffered seawater. In these incubations,40 mM lactate was rapidly dissimilated to acetate by sulphate reducing bacteria after a lag period of three days. In presence of added nitrate or ferric iron (both 1 mM) or a combination of both, the initial lactate consumption rate was slowed down and sulphate reduction started after four days at a similar rate as was observed in the absence of nitrate and ferric iron. Nitrate in combination with ferrous iron totally inhibited sulphate reduction. Some lactate was initially oxidized, but its concentration did not change after day six of incubation. In these incubations ferrous iron was oxidized chemically to ferric iron with a concomitant reduction of nitrite to nitric oxide. In this so-called chemodenitrification process, nitrite was formed biologically from nitrate with lactate as a reductant. In Chapter 5 chemodenitrification was studied in details with E.coliE4as a model bacterium. Both, L-lactate-driven nitrate and ferric iron reduction were investigated. Ferric iron reduction in E.coliE4was found to be constitutive. Contrary to nitrate, ferric iron could not be used as an electron acceptor for growth. Ferric iron reductase activity of 9 nmol Fe 2+.mg -1protein.min -1could not be inhibited by well known inhibitors of the E.coli respiratory chain. Active cells and the presence of L-lactate were required for ferric iron reduction. The L-lactate-driven nitrate respiration in E.coliE4 leading to the production of nitrite, was reduced to about 20% of its maximum activity with 5 mM ferric iron, or to about 50% in presence of 5 mM ferrous iron. The inhibition was caused by nitric oxide formed by a spontaneous chemical reduction of nitrite by ferrous iron. Nitric oxide was further chemically reduced by ferrous iron to nitrous oxide. With electron paramagnetic resonance spectroscopy, the presence of a free ferro-nitrosyl complex was shown. In presence of ferrous or ferric iron and L-lactate, nitrate was anaerobically converted to nitric oxide and nitrous oxide by the combined action of E.coli E4 and spontaneous chemical reduction reactions. Chapter 6 reports on aerobic reduction of nitrate to ammonium in E.coli grown in continuous cultures, a novel feature of E.coli Nitrate and nitrite was reduced by E.coli E4 in a L-lactate (5 mM) limited chemostat culture at dissolved oxygen concentrations corresponding to 90 - 100% air saturation. Nitrate reductase and nitrite reductase activity was regulated by the growth rate, oxygen and nitrate concentrations. At a low growth rate (0.11 h -1) the measured nitrate and nitrite reductase activities were 200 and 250 nmol.mg -1protein.min -1, respectively. At a high growth rate (0.55 h -1both enzyme activities were considerably lower (25 and 12 nmol.mg -1protein.min -1). The steady state nitrite concentration in the chemostat was controlled by the combined action of the nitrate and nitrite reductase. Both enzyme activities were inversely proportional to the growth rate. The nitrite reductase activity decreased faster with the growth rate than the nitrate reductase. The chemostat biomass concentration of E.coli E4, with ammonium either solely or combined with nitrate as a source of nitrogen, remained constant throughout all growth rates and was not affected by nitrite concentrations. Contrary to batch, E.coli E4 was able to grow on nitrate as the sole source of nitrogen. When cultivated with nitrate as the sole source of nitrogen the chemostat biomass concentration is determined by the combined activities of nitrate and nitrite reductase and hence, inversely proportional to growth rate.

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