Sökning: "plastic pollution"

Visar resultat 6 - 10 av 26 avhandlingar innehållade orden plastic pollution.

1. 6. Urban Surfaces as Sources of Stormwater Pollution : An Evaluation of Substances Released from Building Envelopes

   Författare :Alexandra Müller; Maria Viklander; Helene Österlund; Jiri Marsalek; Per-Arne Malmqvist; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VA-teknik; Urban Water Engineering; Centre - Centre for Stormwater Management DRIZZLE ; Centrumbildning - Centrum för dagvattenhantering DRIZZLE ;

   Sammanfattning : Stormwater is an important transport pathway for pollutants from the urban environment into receiving water bodies, and, thus, it contributes to the deterioration of urban surface waters. The aim of this Licentiate thesis was to advance the understanding of the contributions of urban stormwater pollutants from building surface materials, and evaluate the implications for stormwater quality. LÄS MER

3. 7. Seasonal and Long-Term Storage of Baled Municipal Solid Waste

   Författare :Diauddin Nammari; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; pollution control; Environmental technology; Analytisk kemi; Analytical chemistry; Miljöstudier; Environmental studies; Waste storage; Poly aromatic hydrocarbons PAH ; Dioxin; Self ignition; Volatile organic compounds; GC-MS; Temperature; Interpolation; Baling; Cylindrical bales; Rectangular bales; Miljöteknik; kontroll av utsläpp;

   Sammanfattning : Baling of MSW has been extensively used in Sweden and other countries for the storage of energy (biomass for energy) for incineration and production of either and or electricity and heat. Baling is performed in two principally different ways, leading to cylindrical- or rectangular bales. LÄS MER

4. 8. On the Determination of Reactive Compounds in Aerosols

   Författare :Mårten Spanne; Ergonomi och aerosolteknologi; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Environmental technology; industrial hygiene; isocyanates; particles; sampling; aerosols; pollution control; Miljöteknik; kontroll av utsläpp;

   Sammanfattning : Many sources of airborne contaminants have always been present in various work environments. With the development of thermosetting plastic systems, the use of reactive chemical compounds was greatly increased and thus also the risk of exposure to reactive and potentially hazardous compounds. LÄS MER

5. 9. Towards sustainable plastics : Microbial production of aromatic and aliphatic building blocks from biobased feedstock and plastic hydrolysate

   Författare :Oliver Englund Örn; Bioteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cell factories; Biobased plastics; Protocatechuic acid; Adipic acid; 4-Hydroxybyratate; 1; 4-Butanediol; PBAT; Enzymatic recycling; Synthetic promoter library;

   Sammanfattning : The current plastic system is unsustainable and needs to change. Plastics are mainly produced from fossil feedstock, contributing to greenhouse gas emissions, and low rate of post-consumer recycling results in pollution on land and in oceans with high ecological impact, and huge loss of valuable material. LÄS MER

7. 10. Microplastics in the marine environment and the assessment of potential adverse effects of associated chemicals

   Författare :Christine Schönlau; Anna Kärrman; Magnus Engwall; Magnus Breitholtz; Örebro universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Microplastics; reporter gene bioassays; sorption; HOCs; polyethylene; polypropylene; polystyrene;

   Sammanfattning : During the last decade plastics have gained interest by scientists as emerging pollutants particularly in the marine environment due to their ubiquity and persistence. While several studies report the occurrence of microplastics in surface waters globally, there are no harmonized methods to sample and measure microplastics, and the knowledge of toxicological effects in the marine ecosystem is scarce. LÄS MER