Sökning: "Biodegradation"

Visar resultat 21 - 25 av 73 avhandlingar innehållade ordet Biodegradation.

1. 21. Biotechnological treatment of chlorophenol-contaminated water

   Författare :Hamid Zilouei; Bioteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biotechnology; Bioteknik; kontroll av utsläpp; Miljöteknik; pollution control; Environmental technology; Cell-based biosensor; Fluorescence in situ hybridization; Bacterial community; Two-liquid phase partitioning bioreactor; Photolysis pretreatment; Biomonitoring; Fixed-biofilm reactors; Toxic organic pollutant; Biodegradation;

   Sammanfattning : Widespread presence of toxic and persistent pollutants in the environment, even at low concentrations, causes risks of adverse effects to human health and the ecosystem. Biological methods for treatment of water streams and removal of persistent pollutants are of great interest due to their simplicity, low cost, and mild operational conditions without harmful by-products. LÄS MER

3. 22. Hierarchical responses to organic contaminants in aquatic ecotoxicological bioassays: from microcystins to biodegradation

   Författare :Katia Montenegro; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; grazing efficiency; potential trade-off; glyphosate mineralization; DDE; potential denitrification; microcystin production; potential nitrification; DDE biodegradation; water stable isotopes; groundwater apparent age; fenthion; Chlorophyta; Daphnia pulex; diversity productivity relationship; glyphosate;

   Sammanfattning : In this thesis I explore the ecotoxicological responses of aquatic organisms at different hierarchical levels to organic contaminants by means of bioassays. The bioassays use novel endpoints or approaches to elucidate the effects of exposure to contaminants and attempt to give mechanistic explanations that could be used to interpret effects at higher hierarchical scales. LÄS MER

4. 23. 4-chlorophenol biodegradation by Arthrobacter chlorophenolicus A6

   Författare :Karolina Nordin; Janet Jansson; Lawrence P. Wackett; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biochemistry; Biokemi;

   Sammanfattning : A microorganism was isolated which could grow on unusually high concentrations of the toxic pollutant 4-chlorophenol. Taxonomic studies showed that the microorganism constituted a novel species within the genus Arthrobacter and it was named Arthrobacter chlorophenolicus A6. A. LÄS MER

5. 24. On the role of cellobiose dehydrogenase in cellulose biodegradation

   Författare :Martin Kruså; KTH; []
   Nyckelord :cellobiose dehydrogenase; methyl b-d-glucopyranoside; hydroxyl radical;

   Sammanfattning : .... LÄS MER

7. 25. Investigation of degradation of toxic substances in fungal cultures by mass spectrometric techniques

   Författare :Åke Stenholm; Mikael Hedeland; Pablo Campo Moreno; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; UHPLC-Q-TOF MS; filamentous fungi; immobilization; polyurethane foam; removal; biodegradation products; Analytisk farmaceutisk kemi; Analytical Pharmaceutical Chemistry;

   Sammanfattning : Micropollutants in water are biological or chemical contaminants that are present in ground and surface waters in trace quantities. They are a result of human activity and include pharmaceutically active compounds (PhACs) and endocrine disrupting compounds (EDCs). LÄS MER