Prof. Dr. Wilhelm Pyka

Soil and groundwater

• Herbert, M.; Schüth, Ch.; Pyka, W. (1992): Sorption of polycyclic aromatic hydrocarbons (PAH) during the filtration of water samples.- Wasser und Boden No. 8: S. 504-507
• Pyka, W., Schüth, Ch.; Wilhelm, T.; Grathwohl, P. (1992): Dissolution and Transport of Coal-Tar Constituents.- Proceedings 1st International Symposium on Environment Contaminations in Central and Eastern Europe, Budapest, Hungary, 12-16 October 1992. pp. 168-170.
• Pyka, W. (1993): Aqueous Solubility of Coal-Tar Constituents Under Equilibrium Conditions.- In: Arendt, F.; Annokkee, G.J.; Bosman, R.; van den Brink (Eds.), Cotaminated Soil `93, Kluwer Acedemic Publisher, pp. 549-555.
• Pyka, W.; Weiß, H.; Erhardt, B.; Grathwohl, P.; Seeger, T. (1993): Investigation of subsurface contamination by hydrocarbons using CO2, CH4, and O2 measurements in soil air.- In: Arendt, F.; Annokkee, G.J.; Bosman, R.; van den Brink (Eds.), Cotaminated Soil `93; Kluwer Acedemic Publisher. S. 987-988.
• Grathwohl, P.; Gewald, T.; Pyka, W.; Schüth, Ch. (1993): Investigations on the determination of contaminant release from contaminated soil.- In: Arendt, F.; Annokkee, G.J.; Bosman, R.; van den Brink (Eds.), Cotaminated Soil `93; Kluwer Acedemic Publisher. S. 173-182.
• Schüth, Ch.; Pyka, W.; Wilhelm, T.; Grathwohl, P.(1993): Dissolution and transport of tar constituents and their impact on groundwater quality.In: Arendt, F.; Annokke, G.J. ; Bosman, R.; van den Brink (Eds.), Contaminated Soil `93; Kluwer Academic Publisher. S.553-554.
• Grathwohl, P.; Pyka, W.; Merkel, P. (1994): Desorption of organic pollutants (PAHs) from contaminated aquifer material.In: Dracos, T.H.; Stauffer, F. (eds.), Transport and reactive Processes in aquifers, A.A. Balkema Rotterdam. S.469-474.
• Pyka, W. (1994): Release of tar constituents from residual tar phase into groundwater - Laboratory studies on dissolution rate and solute transfer.- Tübinger Geowissenschaftliche Arbeiten (TGA) Reihe C, Nr. 21, S.76.
• Weiß, H.; Pyka, W. Grathwohl, P. (1995): Emission of PAH's from aged soil contaminations at former gasworks.- In: van den Brink W.J.; Bosman, R.; Arendt, F.(eds.), Contaminated Soil ` 95, pp.427-428.
• Pyka, W.; Grathwohl, P.; Schüth, Ch. (1993): Release of Polycyclic Aromatic Hydrocarbons From Residual Coal-Tar Contaminations into Groundwater.- Abstract for presentation at the Fall Meeting of the American Geophysical Union, San Francisco, 3-7 December 1993. S. 290
• Pyka, W. (1994): Influence of dissolved humic substances on the water solubility of poycyclic aromatic hydrocarbons.- Conference of the FHDGG "Flächenhafte Schadstoffeinträge in das Grundwasser, 9-14 May 1994 in Mainz.
• Pyka, W.; Grathwohl, P.; Schüth, Ch. (1993): Release of Polycyclic Aromatic Hydrocarbons From Residual Coal-Tar Contaminations into Groundwater.- Presentation at the WCGR Groundwater Research Centre in Waterloo, Canada.
• Pyka, W. (1994): Influence of dissolved humic substances on the water solubility of polycyclic aromatic hydrocarbons.- Abstract for presentation at the Fall Meeting of the American Geophysical Union, 4-9 December 1994 in San Francisco, p. 245.
• Pyka, W. (1995): Prediction of the water solubility enhancement of polycyclic aromatic hydrocarbons by dissolved humic substances.- Paper presented at the conference Contaminated Soil ` 95, 30.10-3.11.95 in Maastricht, The Netherlands.
• Pyka, W. (1999): Calculation methods for estimating the remediation time for in-situ measures.- Marktredwitzer Bodenschutztage 1999 Tagungsband 1 "Bodenschutz und Altlastensanierung". S.73-78.
• Pyka, W. (2003): Remediation time scale assessment in context with reactive walls.- Hämeenlinna, Finland, April 2003.
• Pyka, W., Kiesel, M. (2003): Natural Attenuation-Effekt am Beispiel eines MKW-Schadens.- Altlastensymposium 2003 der Gesellschaft zur Altlastensanierung in Bayern, 19/20 May in Augsburg.
• Kiesel M., Harlacher C., Pyka, W., Hartmann, R., Huth, R. (2003): Field investigations to quantify and evaluate the natural degradation processes in groundwater in the case of contamination by mineral oil hydrocarbons using the example of the Geretsried site.- Final report sub-project 2 of the Bavarian research network project "Sustainable management of contaminated sites involving the natural purification capacity".
• Pyka W., Hartmann, R., Huth, R., Kiesel, M. (2003): Evaluation of the natural degradation processes using the example of a mineral oil contamination in Geretsried - Symposium on the Bavarian Research Network Project "Sustainable Management of Contaminated Sites with the Inclusion of the Natural Cleaning Capacity" in Augsburg on 10/11 November 2003.

2018

• Geothermal balancing of the groundwater resources in the Quaternary valley gravels between Friesenried and Mindelheim (Ostallgäu/Unterallgäu).
• Feasibility study for the remediation of a CHC pollution site in Hungary
• Soil protection in construction projects using the example of wind power plants - Soil monitoring as an instrument for safeguarding soil functions

• Immobilisation of arsenic from Schweinfurter Grün in soils. In cooperation with the LFU Bayern
• Development of a monitoring concept for medium-term groundwater monitoring. In cooperation with the WWA Ansbach
• Determination of the mean groundwater recharge rate with the help of Geographical Information Systems. In cooperation with the engineering office Rietzler&Heidrich
• Investigation of the nitrate problem in the water catchment area of the Gutzberg spring near Stein. In cooperation with the municipal utility Stein
• Hydrogeology in the urban area of Ingolstadt - groundwater flow and artificial rain infiltration. In cooperation with the Institute for Environmental Protection, Water Contaminated Sites and Geotechnics IFUWA
• Soil ecological investigations in selected wet and humid sites at the Forchenhügel with special regard to the nutrient situation
• Characteristics and functionality of urban soils in the area of future residential and mixed-use areas in the urban area of Schwabach. In cooperation with the Geological Institute of the University of Erlangen-Nuremberg
• LCKW degradation and chromate reduction in Fe°-reactive walls: Inhibition processes by chromate. In cooperation with the Institute of Hydraulic Engineering of the University of Stuttgart.
• Designation of a drinking water protection area for the community of Unterfeldbrecht. In cooperation with the Water Management Office Ansbach
• Designation of a protected area in the catchment of the Bettersrot water supply.
• Remediation concept for a nitrate-polluted water extraction plant
• Study on the immobilisation of nickel dissolved in groundwater in a reactive wall with simultaneous dehalogenation of highly volatile halogenated hydrocarbons. In cooperation with the Landesgewerbeanstalt Bayern, Institute for Environmental Geology and Contaminated Sites
• Investigations into the possible use of claystone for soil improvement. In cooperation with the Landesgewerbeanstalt Bayern, Institute for Environmental Geology and Contaminated Sites
• Biological remediation of TNT-contaminated soils - Investigations on sorption and binding structure of metabolites of TNT to soil components. In cooperation with the Fraunhofer Institute
• Development of a computer-aided expert system for the treatment of contaminated sites. In cooperation with the Institute for Groundwater and Soil Protection Lippert und Schmolke
• Area-differentiated runoff calculation for a small catchment area in the northern Black Forest. In cooperation with the University of Tübingen, Centre for Applied Geosciences
• Development, set-up and implementation of laboratory tests for electrokinetic cleaning of heavy metal contaminated soils. In cooperation with the LFU Bavaria
• Sediment and pore water investigations of two Black Forest lakes. In cooperation with the University of Heidelberg, Institute for Environmental Geochemistry.
• Possibilities to analyse the costs for the investigation of contaminant plumes in groundwater with regard to natural retention and degradation processes. In cooperation with the University of Tübingen, Centre for Applied Geosciences.

• Optimisation of the retention of microorganisms in a sand filter system
• Influence of an antiprecipitant on zinc adsorption in a groundwater remediation plant
• Use of superabsorbents for soil improvement in geotechnical engineering
• Mass transport and residence time of polar organic compounds in a column experiment
• Investigation of vegetation damage in a front garden in Nuremberg-Katzwang
• Determination of redox zonation to characterise microbiological degradation
• Natural Attenuation - field investigations to quantify and evaluate natural degradation processes in groundwater
• Groundwater development in Wieseth for sports field irrigation
• Life cycle assessment of a contaminated site remediation
• Development of a simple method for determining the quality of compost
• Comparison of the microbial activity of different soils
• Column experiment on the biological degradation of 2-chlorophenol
• Historical research for a company site in Neuendettelsau
• Investigation of the elutability of zinc and lead from banquet peelings
• Determination of the optimal water content of different soils for bioremediation

Quantitative methods of contaminated site management

- Hazard assessment

- Remediation

- Natural Attenuation

(as of October 2005)