Search for dissertations about: "clean-up"

Showing result 1 - 5 of 60 swedish dissertations containing the word clean-up.

  2. 1. Novel Metal Oxide Bed Materials for Efficient Solid Fuel Gasification and Gas Clean-up in Fluidized Beds

    Author : Martin Keller; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hot Gas Clean-up; Gasification; Dual Fluidized Bed; Chemical Looping Reforming; Chemical Looping Combustion; Tar reforming;

    Abstract : In this work the utilization of some novel metal oxide bed materials in dual-fluidized bed gasification systems has been investigated. For this purpose, metal oxide based bed materials can be 1) directly utilized in the dual fluidized bed gasifier (DFB) or in the Chemical Looping Combustion (CLC) process in order to achieve higher gasification rates, or 2) employed in downstream hot gas conditioning processes, e. READ MORE

  4. 2. Non-porous membrane extractions in contemporary analysis

    Author : Jan Norberg; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; extracting syringe; micro-porous membrane extraction; supported liquid membrane; solvent free; selectivity; clean-up; enrichment; Sample preparation; automation; Analytical chemistry; Analytisk kemi;

    Abstract : To meet the desirable characteristic for sample preparation in contemporary, i. e. automation, high enrichment, clean-up, selectivity and essential solvent free techniques, the use of non-porous membrane extraction techniques is addressed. READ MORE

  5. 3. Sustainable Environmental Clean-up : Dynamic assessment for sustainable remediation of contaminated sites

    Author : Mehran Naseri Rad; Avdelningen för Teknisk vattenresurslära; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; contaminated sites; sustainability assessment; remediation; multicriteria decision analysis; system dynamics; contaminant transport;

    Abstract : Soil and groundwater contamination is an increasingly recognised threat to public health and the environment around the globe. New types of contaminants continue to emerge, and awareness of their threat, continues to develop. Many countries have national clean-up programs with priority lists of the most hazardous contaminated sites. READ MORE

  6. 4. Novel clean-up, concentration and laser desorption/ionization strategies for mass spectrometry

    Author : Mohammadreza Shariatgorji; Leopold Ilag; Juan Astorga-wells; Bernhard Spengler; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mass spectrometry; ESI-MS; SALDI-MS; Electrocapture; Sample treatment; Analytical chemistry; Analytisk kemi; Analytical Chemistry; analytisk kemi;

    Abstract : Despite valuable advantages of mass spectrometry (MS) techniques they still have drawbacks that need to be overcome, notably their sensitivity to various kinds of interfering substances and associated difficulties involved in detecting signals from analytes present in trace quantities. Thus, high quality analytical data could be acquired by improving sample pre-treatment techniques and/or ionization methods to increase ionization yields and/or avoid the generation of unwanted ions. READ MORE

  7. 5. Flow injection systems for process analytical chemistry

    Author : Ingrid Lukkari; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Flow injection; Sequential injection; Process analytical chemistry; Multivariate calibration; Sensor injection; Gas-diffusion; Sample clean-up;

    Abstract : Flow injection systems have great potential for sample handling and analysis in process analytical chemistry. The flexibility and versatility of flow injection manifolds can he utilized in specific applications of sample conditioning and analysis. READ MORE