Full-ceramic heat exchangers

Fügetechnik Berlin (Berlin Joining Technologies) – a BAM offspring company at the Hanover Fair 2011

Berlin Joining Technologies designs and manufactures tailor-made high-performance components according to their customer’s needs. The company uses a new patented method based on conventional welding. This technology enables the production of components with complex internal geometry which has previously not been possible. At the same time they can meet high standards: they are resistant against chemicals, environmental influences or radiation, high temperatures or extreme frictional load. Such components can be used in agitating and kneading machines, heat exchangers, micro reactors or pumps.

Berlin Joining Technologies is a BAM offspring company and is sponsored by the EXIST research transfer programme of the Federal Ministry of Economics and Technology.

BAM will be at the Hanover Fair 2011 in Hall 2, Stand A18. In addition to ceramic welding, three other projects are demonstrated: a new laser hybrid orbital welding method for pipeline construction, emission measurement for protecting artefacts and cultural goods in museums and a measurement device for monitoring the hardening process of fibre composite materials.

Everyone is invited to visit our stand. Long-term tickets are available free of charge (limited number).

Contact:
Dr.-Ing. Jürgen Lexow
Research Coordination, Marketing
Phone: +49 30 8104-1004, Email: presse@bam.de

Air sampling at a model showcase

Museum showcases are supposed to protect the artefacts and cultural goods exhibited in them against harmful external effects, for example deposits of spores, pollen, dust and smoke particles. Modern museum showcases offer relatively good protection against these substances which is achieved through as high a degree of airtightness as possible.

However, there are internal sources of substances which can damage exhibits. They may be vapours from the exhibited object or emissions such as solvents or organic acids (e.g. formic and acetic acid) originating from the materials of the showcases and showcase fittings.

Modern airtight showcases however, have disadvantageous features as well. Because of the low air exchange rates, damage to the objects exhibited by pollutants in the showcase air increases.

So far neither suitably approved test methods nor any pollutant threshold values exist world-wide for the special application case “museum showcase“.

The BAM Division 4.2 Environmental Material and Product Properties, together with the showcase manufacturer Glasbau Hahn and Department II ”Life Science Engineering“ of HTW (University for Technology and Economics) Berlin, has developed a new pollutant measurement method.

This measuring method can be used to quantitatively determine volatile organic acids such as acetic and formic acid against the background of various volatile organic compounds. Research into suitable adsorbents is also being carried out. The application of suitable adsorbents to showcase air sampling is a prerequisite for correct analytical results. In addition, solutions are being sought to remove pollutants from internal sources using adsorbents placed permanently into the showcase.

The project has been sponsored by Federal Ministry of Economics and Technology (BMWi) within the Central Innovation Programme for Medium-sized Enterprises (ZIM).

The results of the investigations will be presented at Technart 2011.

More about Cultural goods preservation - only in German.

Contact:
Dr. rer. nat. Katharina Wiegner
Division 4.2 Environmental Material and Product Properties
Phone: +49 30 8104-4872, Email: katharina.wiegner@bam.de

Distribution of carbamazepine content in Berlin at 160 measuring points

Active substances from medicines are being increasingly detected in waters. Now a research team in Department 1 Analytical Chemistry, Reference Materials tries to find the causes.

The research team is developing analytic methods to determine these active substances so enabling authorities, private research laboratories, water suppliers or sewage plant operators to obtain correct and reproducible measurement results under their own support. The Working group Immune-chemical Methods has developed biochemical, anti-body-based detection methods, so-called ELISA tests, which enable a high sample throughput at low costs. The required standardized immune reagents are available in the BAM-Webshop.

In 2010, BAM researchers, in co-operation with the Berlin Water Works, took samples from all of Berlin’s waters and performed an ELISA test for the anti-epilepticum carbamazepine. They found concentrations of up to 5.5 micrograms per litre (µg/L) in the inflow of sewage plants, up to 2.7 µg/L in the outflow and a few nanograms/litre (ng/L) up to 1,300 ng/L in watercourses (particularly in the Teltow Canal in Adlershof).

Concentration distribution in drinking water (0 – 100 ng/L) reflects the relationship to various supply areas within the individual districts. Carbamazepine concentrations found in the drinking water are toxicologically harmless according to official estimates. However, they indicate the circulation of persistent pharmaceuticals, which are difficult to degrade physically, chemically or biologically. They get into the sewage via secretion, enter the surface waters, then arrive at the drinking water through bank filtration and, finally, reach us, the consumers.

Contact:
Priv.-Doz. Dr. rer. nat. Rudolf J. Schneider
Division 1.5 Bioanalytics, Working group Immunochemical Methods
Phone: +49 30 8104-1151, Email: rudolf.schneider@bam.de

• Official Gazette − Volume 41, issue 1/2011 only in German
  Amts- und Mitteilungsblatt, Band 41, Ausgabe 1/2011 (PDF, 9 MB)
  ISSN 0340-7551
  
  Contact:
  BAM Federal Institute for Materials Research and Testing
  Bibliography and Information
  Martina Scheil
  Phone: +49 30 8104-2039, Email: martina.scheil@bam.de
  
  
• BAM Dissertation Series, Volume 69
  M. Sc. Eda Jagst
  Surface Functional Group Characterization Using Chemical Derivatization X-ray Photoelectron Spectroscopy (CD-XPS)
  (Full text, PDF, 1.7 MB, Abstract, PDF)
  2011, ISBN 978-3-9813853-4-1
  
  Contact:
  Dr. rer. nat. Georg Reiners
  Department 6 Materials Protection and Surface Technologies, Division 6.4 Surface Technologies
  Phone: +49 30 8104-1820, Email: georg.reiners@bam.de