Search for dissertations about: "emerging chemicals"

Showing result 1 - 5 of 13 swedish dissertations containing the words emerging chemicals.

  1. 1. Confronting new challenges in chemical assessment : emerging contaminants and climate change

    University dissertation from Stockholm : Department of Applied Environmental Science (ITM), Stockholm Univeristy

    Author : Deguo Kong; Stockholms universitet.; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; emerging chemicals; climate change; fate; multimedia model; risk assessment; physical-chemical property; uncertainty; Arctic; Baltic; time series; persistent organic pollutants; temporal trend; Applied Environmental Science; tillämpad miljövetenskap;

    Abstract : Both chemical-specific (e.g. physical-chemical properties) and environmental (e.g. READ MORE

  2. 2. Environmental Assessment of Green Chemicals - LCA of Bio-Based Chemicals Produced Using Biocatalysis

    University dissertation from Stockholm : Department of Applied Environmental Science (ITM), Stockholm Univeristy

    Author : Linda Tufvesson; Lunds universitet.; Lund University.; [2010]
    Keywords : industrial biotechnology; green chemicals; Life cycle assessment; renewable resources; TEKNIKVETENSKAP; TECHNOLOGY;

    Abstract : It is of at most importance that society reduces its impact on the environment. In the chemical industry the use of renewable resources will play a fundamental role in the transition to more sustainable chemical products. Also industrial biotechnology, i.e. READ MORE

  3. 3. Environmental Assessment of Emerging Bio-based Production - Possibilities in a Future Bio-economy

    University dissertation from Environmental and Energy System Studies, Lund University

    Author : Anna Ekman; Lunds universitet.; Lund University.; [2012]
    Keywords : Bio-based chemicals; Biorefinery; Life cycle assessment; Industrial biotechnology; Bio-economy; TEKNIKVETENSKAP; TECHNOLOGY;

    Abstract : The bio-economy has been put forward as a strategy to increase economic growth without this leading to increased emissions of greenhouse gases. A key concept behind the bio-economy is the increased use of biomass for applications such as the production of bio-based chemicals and materials but also an increased importance for biotechnology and biorefinery systems in the production of these products. READ MORE

  4. 4. Environmental fate of chemicals released from consumer products : Multimedia modelling strategies

    University dissertation from Stockholm : Department of Applied Environmental Science (ITM), Stockholm University

    Author : Anna Palm Cousins; Stockholms universitet.; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Multimedia fate model; urban model; PBDEs; phthalate esters; indoor environment; emissions; exposure; BDE 209; DINP; DEHP; Applied Environmental Science; tillämpad miljövetenskap;

    Abstract : The objective of this thesis was to assess the environmental fate and transport of chemicals emitted from consumer products through the development and application of modelling tools. The following hypotheses were tested: i) Multimedia fate models can be applied in a multistage assessment process to emerging chemicals when limited knowledge exists to identify the likely environmental fate and to direct further research; ii) the indoor environment acts as a source of anthropogenic substances in consumer products to the outdoor environment; and iii) chemical removal pathways in the indoor environment are important for the fate of organic chemicals in densely populated areas. READ MORE

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

    University dissertation from Stockholm : Department of Applied Environmental Science (ITM), Stockholm University

    Author : Tarek Dishisha; Lunds universitet.; Lund University.; [2013]
    Keywords : platform chemical; Biorefinery; 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; NATURVETENSKAP; NATURAL SCIENCES; TEKNIKVETENSKAP; TECHNOLOGY; Kemi; Chemistry; Biologi; Biology;

    Abstract : 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. READ MORE