Niels Hartog

Niels Hartog
KWR Water Research Institute · Water Systems & Technology Research Group

About

92
Publications
33,699
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
1,252
Citations
Introduction
Working on a range of topics in the field of environmental hydrogeology: hydrogeochemical processes, groundwater quality, pollution and remediation, managed aquifer recharge (MAR/ASR) and geothermal energy and aquifer thermal energy storage (ATES)
Additional affiliations
January 2013 - present
Utrecht University
Position
  • Professor
November 2012 - present
KWR Water Research Institute
Position
  • Senior Researcher
August 2003 - August 2006
University of Waterloo
Position
  • PostDoc Position

Publications

Publications (92)
Conference Paper
Full-text available
Managed Aquifer Recharge (MAR) interventions are usually designed for local water availability. However, regional hydrogeological conditions can be of major influence on the suitability and performance, depending on MAR type and size. Therefore, to facilitate site selection and suitable MAR scheme design and conditions, it is important to incorpora...
Article
Full-text available
The anaerobic degradation of aromatic hydrocarbons in a plume originating from a Pintsch gas tar-DNAPL zone was investigated using molecular, isotopic- and microbial analyses. Benzene concentrations diminished at the relatively small meter scale dimensions of the nitrate reducing plume fringe. The ratio of benzene to toluene, ethylbenzene, xylenes...
Article
Full-text available
Larger well diameters allow higher groundwater abstraction rates. But particularly for the construction of wells at greater depth, it may be more cost‐efficient to only expand the borehole in the target aquifer. However, current drilling techniques for unconsolidated formations are limited by their expansion factors (<2) and diameters (<1000 mm). T...
Article
Full-text available
The primary energy use of ATES systems evaluated for high and low aquifer utilisation levels. • High aquifer utilisation levels reduce energy use of individual systems, as more wells can be placed. • The highest aquifer utilization level considered is 115% and resulted in 82% ATES adoption. • For aquifer utilization <80%, energy use of buildings is...
Article
Full-text available
In the energy transition, multi-energy systems are crucial to reduce the temporal, spatial and functional mismatch between sustainable energy supply and demand. Technologies as power-to-heat (PtH) allow flexible and effective utilisation of available surplus green electricity when integrated with seasonal heat storage options. However, insights and...
Article
Full-text available
Iron(II) concentrations in fresh groundwater in Dutch aquifers range from absent up to 50 mg/l. Evaluation of extensive chemical data sets learned that the maximum logarithmic concentration of iron(II) in aquifers, between ± 6.5 < pH < ± 8, is a linear function of pH, governed by Siderite. It is a broad relation due to oversaturation with respect t...
Article
Full-text available
A wide variety of well drilling techniques and well completion methods is used in the installation of dewatering and artificial recharge wells for the purpose of construction dewatering. The selection of the optimal well type is always a trade-off between the overall costs of well completion and development, the optimal well hydraulics of the well...
Article
Full-text available
Under certain flow conditions, fluid flow through porous media starts to deviate from the linear relationship between flow rate and hydraulic gradient. At such flow conditions, Dar-cy's law for laminar flow can no longer be assumed and nonlinear relationships are required to predict flow in the Forchheimer regime. To date, most of the nonlinear flo...
Article
Full-text available
Methane leakage caused by well integrity failure was assessed at 28 abandoned gas wells and 1 oil well in the Netherlands, which have been plugged, cut and buried to below the ground surface (≥3 mbgl). At each location, methane concentrations were thoroughly scanned at the surface. A static chamber setup was used to measure methane flow rates from...
Conference Paper
Full-text available
The Gisborne MAR project aims to reverse long-term decline of water levels, increase yield and improve water quality of the Makauri alluvial gravel aquifer used for high-value crop irrigation. Therefore, a trial injection of oxic Waipaoa river water into the anoxic highly-mineralised Makauri aquifer through Aquifer Storage Transfer and Recovery (AS...
Conference Paper
Full-text available
Aquifer Thermal Energy Storage (ATES) systems combined with a heat pump save energy for space heating and cooling of buildings. In most countries the temperature of the stored heat is allowed up to 25-30°C. However, when heat is available at higher temperatures (e.g. waste heat, solar heat), it is more efficient to store higher temperatures because...
Conference Paper
Full-text available
Energy consumption for space heating and cooling of buildings can be decreased by 40-80% by use of Aquifer Thermal Energy Storage (ATES). ATES is a proven technique, however, it is not known how efficient currently operating systems are recovering stored energy from the subsurface and how this can be determined with available data. Recent research...
Conference Paper
Full-text available
To minimize fossil fuel combustion, geothermal heat production is increasingly applied in the horticultural sector and for domestic heating in The Netherlands. One of the major operational challenges for further development of geothermal energy in The Netherlands is dealing with the large volumes of geothermal brine that are produced during well de...
Article
Full-text available
Methane leakage caused by well integrity failure was assessed at 28 abandoned gas wells and 1 oil well in the Netherlands, which have been plugged, cut and buried to below the ground surface (≥3 mbgl). At each location, methane concentrations were thoroughly scanned at the surface. A static chamber setup was used to measure methane flow rates from...
Article
Full-text available
Aquifer thermal energy storage (ATES) is a technology with worldwide potential to provide sustainable space heating and cooling using groundwater stored at different temperatures. The thermal recovery efficiency is one of the main parameters that determines the overall energy savings of ATES systems and is affected by storage specifics and site-spe...
Article
Industrial use has led to the presence of liquid elemental mercury (Hg0) worldwide in the subsurface as Dense NonAqueous Phase Liquid (DNAPL), resulting in long lasting sources of contamination, which cause harmful effects on human health and detrimental consequences on ecosystems. However, to date, insight into the infiltration behaviour of elemen...
Article
Full-text available
Liquid elemental mercury occurrence in the subsurface as DNAPL is reported worldwide in proximity of several industrial facilities, such as chlor-alkali plants. Insight into Hg0 DNAPL infiltration behaviour is lacking and, to date, there are no experimental observations of its infiltration and distribution in water saturated porous media, except fo...
Article
Mercury is a contaminant of global concern due to its harmful effects on human health and for the detrimental consequences of its release in the environment. Sources of liquid elemental mercury are usually anthropogenic, such as chlor-alkali plants. To date insight into the infiltration behaviour of liquid elemental mercury in the subsurface is lac...
Article
Full-text available
Blowouts present a small but genuine risk when drilling into the deep subsurface and can have an immediate and significant impact on the surrounding environment. Nevertheless, studies that document their long-term impact are scarce. In 1965, a catastrophic underground blowout occurred during the drilling of a gas well in The Netherlands, which led...
Article
Full-text available
Bodemenergiesystemen worden veelvuldig toegepast om energie te besparen. De warmtepomp van zulke systemen gebruikt echter nog altijd veel elektriciteit, waardoor voor grootschalige toepassing ook grootschalige netverzwaring nodig is. Daarom is het voor de verduurzaming van de gebouwde omgeving belangrijk om alternatieve duurzame technieken voor ver...
Article
In several places in The Netherlands, industrial areas are redeveloped into residential areas with sustainable heating systems based on aquifer thermal energy storages (ATES). At these sites, groundwater is contaminated with chlorinated ethenes. In this project various pilot set-ups were tested as a non-invasive technique to remove chlorinated ethe...
Article
Full-text available
Different types of managed aquifer recharge (MAR) schemes are widely distributed and applied on various scales and for various purposes in the European countries, but a systematic categorization and compilation of data has been missing up to now. The European MAR catalogue presented herein contains various key parameters collected from the availabl...
Article
Full-text available
To be able to overcome water shortages, Abu Dhabi Emirate started an Aquifer Storage and Recovery (ASR) project with desalinated seawater (DSW) as source water near Liwa. It is the largest DSW-ASR project in the world (stored volume ~10 Mm³/year), and should recover potable water for direct use. DSW is infiltrated into a desert dune sand aquifer us...
Article
In this work we introduce a 1-D analytical solution that can be used for the design of horizontal permeable reactive barriers (HPRBs) as a vapor mitigation system at sites contaminated by chlorinated solvents. The developed model incorporates a transient diffusion-dominated transport with a second-order reaction rate constant. Furthermore, the mode...
Conference Paper
Full-text available
Aquifer thermal energy storage (ATES) is a technology to sustainably provide space heating and cooling. Particularly in The Netherlands the number of ATES systems has grown rapidly in the past decade, often with the (re)development of urban areas. To meet objectives for greenhouse gas emission reduction the number of ATES systems is expected and re...
Chapter
Full-text available
http://www.iwapublishing.com/books/9781780406992/filtration-materials-groundwater-guide-good-practice
Article
Full-text available
The efficiency of heat recovery in high-temperature (>60 °C) aquifer thermal energy storage (HT-ATES) systems is limited due to the buoyancy of the injected hot water. This study investigates the potential to improve the efficiency through compensation of the density difference by increased salinity of the injected hot water for a single injection-...
Article
Full-text available
Polycyclic aromatic hydrocarbon (PAH)-degrading bacteria capable of growing under electrokinetic conditions were isolated using an adjusted acclimation and enrichment procedure based on soil contaminated with heavy PAHs in the presence of an electric field. Their ability to degrade heavy PAHs under an electric field was individually investigated in...
Article
Full-text available
The temperature inside wells used for gas, oil and geothermal energy production, as well as steam injection, is in general significantly higher than the groundwater temperature at shallower depths. While heat loss from these hot wells is known to occur, the extent to which this heat loss may result in density-driven flow and in mixing of surroundin...
Article
Full-text available
Highlights • Published rate constants for pH-independent TCE oxidation by MnO4- lack consistency • Inapt use of pseudo-1st-order approach yields bias in rate constant estimates • Negative bias in 2nd-order rate constant estimates is below 5% for P/N over 40 • Range in rate constant estimates for pH-dependent oxidation calls for further study
Article
Full-text available
Permeable reactive barriers are commonly used to treat contaminant plumes in the saturated zone. However, no known applications of horizontal permeable reactive barriers (HPRBs) exist for oxidizing volatile organic compounds (VOCs) in the unsaturated zone. In this study, laboratory column experiments were carried out to investigate the ability of a...
Technical Report
Full-text available
The horticultural sector is making increasing use of geothermal heat as a renewable substitute for the burning of natural gas. However, so far many of the completed geothermal systems in the Netherlands do not function as planned. After heat extraction, the water is reinjected into the reservoir. A frequent problem with this is the poor injectivity...
Article
Full-text available
Water quality deterioration is a common occurrence that may limit the recovery of injected water during aquifer storage and recovery (ASR) operations. This limitation is often induced by the oxidation of the reduced aquifer components by the oxygenated injection water. This study explores the potential of aquifer pre-oxidation using permanganate to...
Article
Full-text available
Bioremediation is a safe and cost-effective technology for the removal of polycyclic aromatic hydrocarbons (PAHs) contaminated soils, but its remediation rate is usually very slow at soils contaminated with heavy PAHs in high concentrations. This paper describes the feasibility of using electrokinetics to enhance the degradation of heavy PAHs in so...
Book
Full-text available
NanoRem (Taking Nanotechnological Remediation Processes from Lab Scale to End User Applications for the Restoration of a Clean Environment) is a research project, funded through the European Commission’s Framework 7 research programme. NanoRem focuses on facilitating practical, safe, economic and exploitable nanotechnology for in situ remediation....
Article
Full-text available
Mercury is a contaminant of global concern. The use of elemental mercury in various (former) industrial processes, such as chlorine production at chlor-alkali plants, is known to have resulted in soil and groundwater contaminations worldwide. However, the subsurface transport behaviour of elemental mercury as an immiscible dense non-aqueous phase l...
Article
Full-text available
The present study evaluated the coupling interactions between bioremediation (BIO) and electrokinetics (EK) in the remediation of total petroleum hydrocarbons (TPH) by using bio-electrokinetics (BIO-EK) with a rotatory 2-D electric field. The results demonstrated an obvious positive correlation between the degradation extents of TPH and electric in...
Article
Full-text available
The main aim of this work was to assess the potential of in situ carbonation as a treatment to modify the properties of alkaline materials such as industrial soil in terms of leaching behaviour and mineralogy and to store the CO2 generated by specific treatments applied in the context of Brownfield regeneration. The process was investigated through...
Article
Full-text available
The use of permanganate solutions for in-situ chemical oxidation (ISCO) is a well-established groundwater remediation technology, particularly for targeting chlorinated ethenes. The kinetics of oxidation reactions is an important ISCO remediation design aspect that affects the efficiency and oxidant persistence. The overall rate of the ISCO reactio...
Article
Full-text available
The technical feasibility of using stopper-derived cork as an effective biosorbent towards bivalent mercury at environmentally relevant concentrations and conditions was evaluated in this study. Only 25 mg/L of cork powder was able to achieve 94 % of mercury removal for an initial mercury concentration of 500 μg/L. It was found that under the condi...
Technical Report
Full-text available
This document presents the opportunities that Aquifer storage and recovery (ASR) projects may provide in urban, agricultural and industrial areas and is intended to be used by urban water utilities (such as drinking water companies), horticulture, industries and municipalities. At an introductory level, this document summarizes the relevant informa...
Article
Full-text available
Groundwater systems are increasingly used for seasonal aquifer thermal energy storage (SATES) for periodic heating and cooling of buildings. Its use is hampered in contaminated aquifers because of the potential environmental risks associated with the spreading of contaminated groundwater, but positive side effects, such as enhanced contaminant reme...
Article
Full-text available
Volatile organic compounds (VOCs) may frequently contaminate groundwater and pose threat to human health when migrating into the unsaturated soil zone and upward to the indoor air. The kinetic of chemical oxidation has been investigated widely for dissolved VOCs in the saturated zone. But, so far there have been few studies on the use of in situ ch...
Conference Paper
Full-text available
This study illustrates that several processes contribute to groundwater quality effects of ATES systems, in which the effect of mixing is predominant for the lowtemperature ATES systems studied. Only for ATES systems in aquifers with relatively homogeneous groundwater quality, minor temperature effects could be observed. At higher temperatures (>30...
Book
Full-text available
In the context of this report, unless otherwise specified, the term iron nanoparticles (NPs) refer to zero-valent (e.g. Fe(0)) as opposed to any of the oxidized nanoparticles of iron (e.g. Fe(II) or Fe(III) present in one or more forms of oxohydroxides, carbonates, or other species). In 2004, in a joint report, the Royal Society and Royal Academy o...