Academic thesis

Silke Heinemann: Bacterial infestation on heavily salt-contaminated architectural surfaces. Investigations of the growth conditions in situ. Back
Language: Original   -   Translation
Abstract: In general architecture surfaces with high concentrations of soluble salts offer suitable growth conditions to specialized, halophilic bacteria. This research is focused on bacteria on architectural surfaces in the church of St. Severinus and Jacobus, Minsen. Due to the haloalkaliphilic properties the organisms require a salt enriched and alkaline environment. The growth conditions and their effect on bacterial activity are investigated in a long term monitoring according to examine the reasons of deterioration. Bacterial growth depends on numerous aspects, e.g. salt concentration, salt composition, pH-value, content of moisture, ambient room temperature, relative humidity and surface temperature. The biodegradation of organic components is pointed out to assess decay mechanisms caused by bacterial activity. In this context the competition between bacteria and salt regarding the available humidity is investigated. Under lab conditions experiments are carried out to cultivate the bacteria by imitating necessary growth conditions. Based on investigations and analysis different treatment methods are discussed in accordance to reduce bacterial infestation with a long lasting effect.


  • academic institution: HAWK Hochschule für angewandte Wissenschaft und Kunst Hildesheim/ Holzminden/Göttingen
  • kind of theses:  Masterarbeit
  • main Tutor:  Prof. Dr. Karin Petersen
  • assistant Tutor:  Dipl.-Rest. Kerstin Klein M.A.
  • date:  2006
  • Language:  German

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