Sökning: "Industrial chemicals"

Visar resultat 6 - 10 av 219 avhandlingar innehållade orden Industrial chemicals.

1. 6. Steam Explosion of Wood

   Författare :Muhammad Muzamal; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; finite element model; Steam explosion; biorefinery; pretreatment; wood;

   Sammanfattning : The rising price of petroleum and environmental concerns regarding CO2 emissions has increased interest in alternative renewable resources. Biomass can be considered as an excellent alternative raw material. A biorefinery uses biomass and produces fuel, energy and value-added chemicals. LÄS MER

3. 7. Transparency within REACH? : Regulatory risk assessment of industrial chemicals

   Författare :Ellen Ingre-Khans; Christina Rudén; Marlene Ågerstrand; Anna Beronius; Jeanne Duus Johansen; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; REACH; chemicals legislation; risk assessment; hazard assessment; transparency; Applied Environmental Science; tillämpad miljövetenskap;

   Sammanfattning : Chemicals provide us with many benefits but can also have adverse effects on human health and the environment. Concerns that previous European legislations were not providing adequate protection from chemical risks resulted in a new chemicals legislation – REACH – in 2007. LÄS MER

4. 8. Priority setting strategies for regulatory testing of industrial chemicals

   Författare :Anna Nordberg; Christina Rudén; Sven Ove Hansson; Nils Gunnar Lindquist; KTH; []
   Nyckelord :HUMANIORA; HUMANITIES; risk assessment; risk management; regulatory toxicology; test strategies; prioritisation; REACH; industrial chemicals; History of technology and industry; Teknik- och industrihistoria;

   Sammanfattning : For the majority of the estimated 70,000 industrial chemical substances available on the European market today there is not enough information to enable a reasonably complete assessment of the risks that they might pose to man and the environment. Any strategy for the generation of additional data for these substances should aim at making testing as efficient as possible taking into account environmental and health protection, time, monetary cost and animal welfare. LÄS MER

5. 9. Microbial Production of Bio-Based Chemicals: A Biorefinery Perspective

   Författare :Tarek Dishisha; Bioteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biorefinery; platform chemical; organic acid; propionic acid; 3-hydroxypropionic acid; 3-hydroxypropionaldehyde; methacrylic acid; 1; 3-propanediol; Propionibacterium acidipropionici; Lactobacillus reuteri; Gluconobacter oxydans; high cell density fermentation; biotransformation; product inhibition; cell recycle; immobilized cells; chemical catalysis; pdu operon;

   Sammanfattning : A shift from fossil- to renewable biomass feedstock for the emerging bio-based economy requires the development and adoption of new sustainable technologies that are more suited for transformation of biomass components to chemicals, materials and energy. This thesis presents investigations on the development of processes based on industrial biotechnology as a key element for the production of chemicals from agro-/industrial by-products. LÄS MER

7. 10. Tools and applications to assess yeast physiology and robustness in bioprocesses: Lab-scale methods from single cells to populations

   Författare :Luca Torello Pianale; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Scale-up; fluorescence; scale-down; Saccharomyces cerevisiae; biosensors; microfluidics; bioproduction;

   Sammanfattning : Bioprocesses enable the efficient production of valuable chemicals by microorganisms such as the yeast Saccharomyces cerevisiae . Predictable and stochastic perturbations affect microbial performance in an industrial-scale bioreactor. LÄS MER