Sökning: "polyhydroxyalkanoates"

Visar resultat 1 - 5 av 6 avhandlingar innehållade ordet polyhydroxyalkanoates.

1. 1. Production of polyhydroxyalkanoates in biological treatment of industrial wastewaters

   Författare :Simon Bengtsson; Bioteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polyhydroxyalkanoates; mixed cultures; glycogen accumulating organisms GAO ; feast and famine; acidogenic fermentation; activated sludge;

   Sammanfattning : In search of more environmentally friendly polymer materials, polyhydroxyalkanoates (PHAs) have been considered as promising candidates. PHAs exhibit a broad range of material properties, can be produced from renewable resources and are completely biodegradable. LÄS MER

3. 2. Volatile Fatty Acids as a Key to Sustainability and Circularity in Polyhydroxyalkanoates Production

   Författare :Hoang Danh Vu; Dan Åkesson; Pau-Loke Show; Högskolan i Borås; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bioplastics; food waste; polyhydroxyalkanoates; volatile fatty acids; immersed membrane bioreactor; acidogenic fermentation; Resource Recovery; Resursåtervinning;

   Sammanfattning : The negative consequences of plastic pollution on both environmental and socio-economic aspects have motivated the development of sustainable and renewable materials to replace the petroleum-based plastic. Polyhydroxyalkanoates (PHAs), which are bioplastics, having an outstanding biodegradability and rather comparable thermal and mechanical properties, are potential alternatives for the replacement of conventional plastics. LÄS MER

4. 3. Poly (3-hydroxybutyrate) from a moderate halophile: production and modification for new applications

   Författare :Marlene Munoz; Bioteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biopolymers; polyhydroxyalkanoates; polyhydroxybutyrate; moderate halophile; Halomonas boliviensis; fermentation; recovery; thermally induced phase separation; scaffolds; covalent modification; hydrophobic ion pairing; polyethylenemine; lysozyme.;

   Sammanfattning : Polyhydroxybutyrate (PHB) is a homopolymer belonging to the family of biopolyesters, polyhydroxyalkanoates (PHA) produced by different bacteria and archaea as intracellular granules often under conditions of metabolic stress due to a limited supply of essential nutrients. The properties of the PHAs are similar to those of polyethylene and polypropylene and can hence replace these fossil based polymers in a large variety of applications. LÄS MER

5. 4. Microbial biopolymer production from waste streams

   Författare :Kasra Khatami Mashhadi; Zeynep Cetecioglu; Anders F. Andersson; Maria Reis; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bioaugmentation; Burkholderia cepacia; Cupriavidus necator; Mixed microbial cultures; Polyhydroxyalkanoates; Volatile fatty acids; Bioaugmentering; Burkholderia cepacia; Cupriavidus necator; Blandade mikrobiella kulturer; Polyhydroxyalkanoater; Flyktiga fettsyror; Chemical Engineering; Kemiteknik;

   Sammanfattning : Burgeoning concerns on the adverse environmental impacts of fossil-derived products are propelling the pursuit of material production from sustainable resources. Resource recovery from waste is a key component of meeting the environmental sustainability agendas set by the United Nations. LÄS MER

7. 5. Microbial production of 3-hydroxypropionic acid and poly(3-hydroxypropionate): Investigation of Lactobacillus reuteri propanediol utilization pathway enzymes

   Författare :Ramin Sabet Azad; Bioteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Platform chemicals; biopolymers; 3-hydroxypropionic acid; 3-hydroxypropionaldehyde; glycerol; poly 3-hydroxypropionate ; polyhydroxyalkanoates; Escherichia coli; Lactobacillus reuteri; propanediol utilization pathway; propionaldehyde dehydrogenase; biotransformation; cofactor regeneration; NADH oxidase;

   Sammanfattning : Concerns regarding environmental issues such as greenhouse gas emissions and climate change have led to a shift within the research community and chemical and energy industry sectors for finding sustainable routes for producing fuels and chemicals from renewable resources, thereby minimizing our dependence on petroleum. The C3-chemical 3-hydroxypropionic acid has been identifed as a top candidate for the biobased chemical industry. LÄS MER