Essays about: "Formic Acid"

Showing result 11 - 15 of 27 essays containing the words Formic Acid.

  1. 11. Pre-acidification of a Synthetic Dairy Wastewater in Continuously Stirred Tank Reactors

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Can Xiong; [2019]
    Keywords : pre-acidification process; hydraulic retention time; soluble chemical oxygen demand transformation into fermentation product; volatile fatty acids; distribution; water engineering; environmental engineering; vattenförsörjningsteknik; avloppsteknik; Earth and Environmental Sciences; Technology and Engineering;

    Abstract : Two-stage anaerobic digestion is considered as a sustainable and efficient way to deal with dairy effluent, and is commonly applied. The pre-acidification happening during the first stage of this process could be used to buffer the complex conditions in the initial dairy effluent, as well as produce intermediary product such as volatile fatty acids (VFA), and it is essential to be controlled. READ MORE

  3. 12. Investigation of growth modes of the lithoautotrophic bacterium Cupriavidus necator

    University essay from Lunds universitet/Teknisk mikrobiologi; Lunds universitet/Bioteknik

    Author : Raquel Perruca Foncillas; [2018]
    Keywords : applied microbiology; teknisk mikrobiologi; Technology and Engineering;

    Abstract : The microorganism Cupriavidus necator is a very interesting bacterium that has been established as a model microorganism for its capability to produce polyhydroxyalkanoates, more specifically polyhydroxybutyrate (PHB), a potential precursor/raw material for bioplastics. Lately, the scientific community has raised interest in the chemolithoautotrophic nature of C. READ MORE

  4. 13. Thermal Stabilization of Polyhydroxyalkanoates by Washing with Acid

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Emma Welinder; Johanna Nilsson; [2017]
    Keywords : polymer technology; polymerteknologi; Chemistry; Technology and Engineering;

    Abstract : The main goal of this project was to investigate how the thermal stability of two different types of polyhydroxyalkanoates; poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-4-hydroxybutyrate) were affected when washing them with acid solution. Initially, four different acids were used: citric acid, hydrochloric acid, formic acid and acetic acid. READ MORE

  5. 14. Chemical kinetics and transport of tropospheric trace compounds - implications for environment and air quality

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Author : Stina Ausmeel; [2015]
    Keywords : Physics and Astronomy;

    Abstract : Fourier transform infrared spectroscopy techniques were used to study the kinetics of gas-phase reactions of three lactones, γ-valerolactone (GVL), 2(5H)-furanone (2(5HF) and 3-methyl-2(5H)-furanone (3M2(5H)F) with Cl atoms, OH radicals and O3 respectively. The experiments were performed in a photochemical reactor at a total pressure of 700 Torr at room temperature (298±2 K). READ MORE

  6. 15. Evaluation of a UPLC-MS method using 18O-labelled water for the identification of hydrolytic degradants of drug substances

    University essay from Uppsala universitet/Avdelningen för analytisk farmaceutisk kemi

    Author : Viktor Kjellberg; [2015]
    Keywords : hydrolysis; degradation; degradants; 18O; 18O-water; liquid chromatography; mass spectrometry; analytical chemistry; structure eludication;

    Abstract : In this master’s thesis the hydrolytic degradation in 18O-water solutions of six drug substances has been studied. The aim was to develop a mass spectrometric method for easier identification of degradants, since hydrolysis in 18O-water will generate degradants with higher mass compared with hydrolysis in regular water. READ MORE