Description: Das Projekt "In-Situ-Ueberwachung von Deponieschadstoffen in Boden und Wasser mithilfe von Infrarotsensoren" wird vom Umweltbundesamt gefördert und von Fraunhofer-Institut für Physikalische Messtechnik durchgeführt. Objective: Problems to be solved: The project will contribute to the abatement of water pollution from contaminated lands, landfills and sediments. With its capacity of on-line and real-time measurement of pollutants, measurement techniques that are not available at the moment, the proposed sensor is a valuable tool for landfill monitoring, risk assessment and control of remediation efficiency. It can, for example, improve the 'use' of natural attenuation as a remediation technique. Natural attenuation, i.e. leaving remediation to natural processes without applying costly techniques, is based on the observation that there is a decrease in the contaminant concentrations which limits the extent of the contaminant plume. The key disadvantage of natural attenuation is the need to ensure that the contamination does not propagate further. The proposed sensors, placed in the vicinity of the plume may serve as a cost effective and reliable alert network. Possible emerging economic possibilities for waste disposal should strengthen EU industrial competitiveness. This is of special importance for the EU with its densely populated production sites. Scientific objectives and approach: The project aims at monitoring of soil and water for landfill related contamination by an in-situ monitoring for soil and water by infrared sensing. A portable and rugged system will be developed that will allow sensor elements to be inserted and left in soil locations under the ground for long term monitoring of organic pollutants. The concept of a buried sensor gives the opportunity to continuously monitor organic pollutants without sampling errors. Since it is important to monitor pollutants over a long period of time, the sensor system will be optimised with regard to long term stability. Expected impacts: The IMSIS sensor concept is novel for landfill monitoring, its central objective is to open new possibilities for continuous monitoring and control. For this reason it is one objective of the project to investigate and evaluate the need of end users with respect to sensor applications. Mid IR spectroscopic measurements are widely used for the analysis of samples placed inside spectrometers. This project is involved in the development and use of IR optical fibres for absorption measurements on remote locations. The development of this remote spectroscopy is on one hand an innovation with respect to real time analytical measurements inside landfills, on the other hand it opens the field of all kind of IR remote sensing applications e.g. in process control or measurements in explosion endangered environments. Within the project, there will be a development of short segments of tapered and flattened fibres which will serve as sensor elements in the sensor head. Tapering of fibres to increase sensitivity is a well-known technique in the UV and visible wavelength range. Tapering of MIR fibres is a completely new and demanding task since IR transmitting materials are difficult t
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Infrarotstrahlung ? Gewässerbelastung ? Sensor ? Umweltbelastung ? Abfallentsorgung ? Absorption ? Schadstoffmessung ? Bodenverunreinigung ? Bodenwasser ? Deponie ? Kind ? Messtechnik ? Spektralanalyse ? Wettbewerbsfähigkeit ? Innovation ? Bodenuntersuchung ? Messverfahren ? Monitoring ? Politik ? Risikoanalyse ? Organischer Schadstoff ? Schadstoffanalyse ? Anlagenüberwachung ? Standortwahl ? Wasseranalyse ? Wasserverschmutzung ? Gewässerschutz ? Sediment ? Bodenmonitoring ? Deponiesanierung ? Soziale Aspekte ? in situ ? Selbstreinigung ? Explosion ? Fernerkundung ? Wirtschaftliche Aspekte ? Umweltschutz ? Risikobewertung ? legislation, regulations ? scientific research ? other energy topics ? renewable sources of energy ? On-Line-Betrieb ?
Region: Baden-Württemberg
Bounding box: 9° .. 9° x 48.5° .. 48.5°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2000-02-29 - 2003-02-28
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