Sökning: "chemicals production"

Visar resultat 1 - 5 av 297 avhandlingar innehållade orden chemicals production.

1. 1. Planning production and supply chain in energy intensive process industries

   Författare :Martin Waldemarsson; Helene Lidestam; Martin Rudberg; Magnus Karlsson; Sophie D'Amours; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process industry; Energy-intensive production processes; Energy system; Energy management; Production planning; Supply chain planning; Case studies; Mixed Integer Linear Programming; Modelling; Specialty chemicals; Pulp; Steel;

   Sammanfattning : To make a difference among the energy intensive process industries, this dissertation addresses production planning and supply chain planning problems related to industrial energy management issues. The energy issue is turning more and more important from different angles, involving price as well as environmental problems due to climate change leading to political pressure on all energy users. LÄS MER

3. 2. Towards renewable chemicals production in cyanobacteria

   Författare :Kateryna Kukil; Pia Lindberg; Yu Jianping; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Synechocystis PCC 6803; metabolic engineering; succinate; phenylpropanoids; laboratory evolution; Chemistry with specialization in Molecular Biomimetics; Kemi med inriktning mot molekylär biomimetik;

   Sammanfattning : The intensive fossil fuel combustion by humanity resulted in the increase of atmospheric CO2 concentration creating the greenhouse effect, which in turn causes severe environmental problems. Thus, humanity should find solutions to decrease dependency on fossil hydrocarbons in order to lower CO2 emission into the atmosphere. LÄS MER

4. 3. Chemicals in textiles : A potential source for human exposure and environmental pollution

   Författare :Giovanna Luongo; Conny Östman; Peter Haglund; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytical Chemistry; analytisk kemi;

   Sammanfattning : The wide use of chemicals in textile production is common knowledge, whilst very little has been done to disclose the potentially harmful compounds hiding in our closet. The initial part of this work focused on explorative screening of textile materials in common clothing. LÄS MER

5. 4. Assessing the Integration of Biomass Gasification-Based Production of Chemicals — Case Study of an Oxo Synthesis Plant

   Författare :Maria Arvidsson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; chemicals production; biorefinery; gasification; syngas; oxo synthesis; process integration;

   Sammanfattning : The chemical industry sector is energy-intensive and highly dependent on fossil feedstock. The primary long-term option to reduce fossil feedstock dependence and greenhouse gas (GHG) emissions is to switch to renewable feedstock. LÄS MER

7. 5. Bortom kontroll? : Den svenska kemikalieövervakningens logik

   Författare :Simon Haikola; Jonas Anshelm; Per Gyberg; Magnus Boström; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Chemicals control; chemicals regulation; uncertainty; risk regulation; environmental monitoring; simulacra; environmental politics; substitution principle; precautionary principle; Kemikaliekontroll; kemikaliereglering; osäkerhet; riskreglering; miljögiftsövervakning; miljöövervakning; simulacra; miljöpolitik; kemikaliepolitik; produktvalsprincipen; försiktighetsprincipen;

   Sammanfattning : Kemikalier utgör en grundläggande beståndsdel av det senindustriella samhället, och en omfattande produktion av kemikalier brukar allmänt anses som en nödvändig förutsättning för teknisk utveckling och ekonomisk tillväxt. I Sverige ledde miljölarmen om DDT, PCB och kvicksilver på 1960- och 1970-talet till inrättandet av ett system för kemikaliekontroll som brukar framhållas som ett av världens främsta. LÄS MER