A5071171706- Microbial bioremediation and biosurfactants
- Pesticide and Herbicide Environmental Studies
- Groundwater flow and contamination studies
- Toxic Organic Pollutants Impact
- Hydrology and Watershed Management Studies
- Groundwater and Isotope Geochemistry
- Plant Water Relations and Carbon Dynamics
- Soil and Unsaturated Flow
- Insect and Pesticide Research
- Heavy metals in environment
- Pharmaceutical and Antibiotic Environmental Impacts
- Pesticide Residue Analysis and Safety
- Effects and risks of endocrine disrupting chemicals
- Botany and Plant Ecology Studies
- Soil erosion and sediment transport
- Economic and Environmental Valuation
- Irrigation Practices and Water Management
- Geophysical and Geoelectrical Methods
- Plant Surface Properties and Treatments
- Soil and Water Nutrient Dynamics
- Geology and Paleoclimatology Research
- Water resources management and optimization
- Lichen and fungal ecology
- Advanced oxidation water treatment
- Constructed Wetlands for Wastewater Treatment
Technical University of Munich
2013-2024
Norsk Hydro (Germany)
2019-2023
Advanced Research Projects Agency - Energy
2022
Technical University of Denmark
2010-2015
Helmholtz Centre for Environmental Research
2007-2009
University of Tübingen
2003-2006
Abstract Models for the prediction of chemical uptake into plants are widely applied tools human and wildlife exposure assessment, pesticide design environmental biotechnology such as phytoremediation. Steady-state considerations often applied, because they simple have a small data need. However, emission pattern is non-steady. Examples spraying, or application manure sewage sludge on agricultural fields. In these scenarios, steady-state solutions not valid, dynamic simulation required. We...
The main purpose of this study was to determine typical concentrations heavy metals (HM) in wood from willows and poplars, order test the feasibility phytoscreening phytoextraction HM. Samples were taken one strongly, moderately, slightly polluted site three reference sites. Wood both tree species had similar background at 0.5 mg kg−1 for cadmium (Cd), 1.6 copper (Cu), 0.3 nickel (Ni), 25 zinc (Zn). Concentrations chromium (Cr) lead (Pb) below or close detection limit. highly significantly...
Abstract BACKGROUND: Drip application of insecticides is an effective way to deliver the chemical plant that avoids off‐site movement via spray drift and minimizes applicator exposure. The aim this paper present a cascade model for uptake pesticide into plants following drip irrigation, its soil‐applied insecticide sensitivity analysis parameters. RESULTS: predicted measured increase decline residues two soil applications peppers, with absolute error between measurement ranging from 0.002...
Biotransformation plays a key role in hydrophobic organic compound (HOC) fate, and understanding kinetics as function of (bio)availability is critical for elucidating persistence, accumulation, toxicity. mainly occurs an aqueous environment, posing technical challenges producing kinetic data because low HOC solubilities sorptive losses. To overcome these, new experimental approach based on passive dosing presented. This avoids using cosolvent introducing the substrate, buffers substrate...
Limited understanding of the fate pesticides in apple orchards may lead to recurring pests or pose risks food safety. In this study, through a field experiment conducted an orchard, dynamic plant uptake model, coupled with soil water was developed simulate measured pesticide concentrations and different compartments.Results showed that overall model could adequately describe data set four orchard. An estimated 15%-24.7% applied were deposited on leaves 0.37%-0.58% fruits. Decreasing fruits...
Metabolism of a low-solubility substrate is limited by dissolution and availability can hardly be determined. We developed numerical model for simultaneously calculating kinetics such substrates their metabolism microbial growth (Monod with decay) tested it three aerobic phenanthrene (PHE) degraders: Novosphingobium pentaromativorans US6-1, Sphingomonas sp. EPA505, Sphingobium yanoikuyae B1. PHE was present as microcrystals, providing non-limiting conditions growth. Total protein...
Environmental fate assessment of chemicals involves standardized simulation tests with isotope-labeled molecules to balance transformation, mineralization, and formation nonextractable residues (NER). Methods predict microbial turnover biogenic NER have been developed, having limited use when metabolites accumulate, the are not only C source, or provide for other macroelements. To improve predictive capability, we extended a recently developed method growth yield estimation account...
Abstract The accelerated growth of water demand globally calls for promising solutions in the field management. Managed aquifer recharge (MAR) systems are among that capable increasing supply and improving quality through natural attenuation processes. Along with hydrogeologic considerations institutional feasibility assessments, economic analysis is essential when evaluating MAR projects. This study first one to provide an assessment a scheme Poland by performing cost-benefit (CBA) combined...
The water budget of soil, the uptake in plants and leaching to groundwater cadmium (Cd) lead (Pb) were simulated simultaneously using a physiological plant model tipping buckets solute transport for soil. Simulations compared results from ten-year experimental field study, where four organic amendments applied every second year. Predicted concentrations slightly decreased or stagnated control soils, but increased amended soils by about 10% 6% 18% (Pb). Estimated was lower plots, due an...
Abstract BACKGROUND In this study, field and greenhouse experiments were done with spray application of the insecticides acetamiprid, indoxacarb, deltamethrin, λ‐cyhalothrin, spinosad, chlorantraniliprole on pepper tomato plants. Results interpreted numerical modeling. RESULTS Observed fruit concentration dynamics could be described overall well by After application, concentrations decreased in (slower) fruits (lower degradation dissipation for tomato). Chemical input to individual...
Abstract Understanding transport and fate processes in the subsurface is of fundamental importance to identify leaching potentials herbicides or other compounds groundwater resources. HYDRUS‐1D was used simulate water flow solute arable land lysimeters. Simulations were compared observed drainage rates stable isotopes (δ 18 O) drainage. Four different model setups investigated statistically evaluated for their performance dominant characterization vadose zone under similar cultivation...
Tree core samples have been used to delineate organic subsurface plumes. In 2009 and 2010, were taken at trees growing on a former dump site in Norway analyzed for arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), zinc (Zn). Concentrations wood averages (dw) 30 mg/kg Zn, 2 Cu, < 1 Cd, Cr, As Ni. The concentrations from the polluted test compared those derived reference site. For all except one case, mean higher than site, but difference was small not always significant....
The catastrophic impact of Hurricane Dorian in September 2019 was unprecedented for the island Grand Bahama. Flooding western portion damaged pine ecosystems, inundated soil and groundwater with salt water, disrupted potable water service throughout island. More than two years post-Hurricane Dorian, freshwater lenses that relies on are still water. This collaborative paper summarizes all efforts researchers practitioners to evaluate lenses, as well their associated serve main source drinking...
Abstract This study investigates the contamination potential of herbicides to groundwater with help numerical modeling (HYDRUS‐1D) and stable carbon isotopes for characterizing biodegradation. Four herbicides, metolachlor, terbuthylazine, prosulfuron, nicosulfuron, were applied over a period 4.5 years on two lysimeters located in Wielenbach, Germany, monitored by lysimeter drainage. These contained soil cores dominated sandy gravel (Ly1) clayey silt (Ly2) both cropped maize ( Zea mays ). In...
Abstract The reliable characterization of subsurface contamination spatially extended contaminated sites is a challenging task, especially with an unknown history land use. Conventional technologies often fail due to temporal and financial constraints thus hinder the redevelopment abandoned areas in particular. Here we compare two site screening techniques that can be applied quickly at relatively low cost, namely Direct Push ( DP )‐based groundwater sampling tree core sampling....
Abstract We have used stable water isotopes (δ 18 O, δ 2 H) in combination with lumped‐parameter modeling for characterizing unsaturated flow two lysimeters vegetated maize. The contained undisturbed soil cores dominated by sandy gravel (Ly1) and clayey silt (Ly2). Stable were analyzed precipitation lysimeter outflow over about 3 years. mean transit time of T dispersion parameter P D , obtained from modeling, higher the Ly2 than Ly1 (T 362 vs. 129 d, 0.7 0.12). consideration preferential...