Search for dissertations about: "natural organic matter"

Showing result 1 - 5 of 321 swedish dissertations containing the words natural organic matter.

  1. 1. Dissolved organic matter in lakes Chemical diversity and continuum of reactivity

    University dissertation from uppsala : Acta Universitatis Upsaliensis

    Author : Alina Mostovaya; Uppsala universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; dissolved organic matter; DOM; dissolved organic carbon; DOC; PARAFAC; reactivity continuum model; ultrahigh resolution mass spectrometry; FT-ICR-MS; organic matter characterization; decomposition kinetics; baseline metabolism; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

    Abstract : Dissolved organic matter (DOM) is the largest pool of organic carbon in aquatic systems and an important component of the global carbon cycle. Large amounts of DOM are decomposed within lakes, resulting in fluxes of CO2 and CH4 to the atmosphere. READ MORE

  2. 2. Molecular-level dissolved organic matter dynamics in lakes Constraints on reactivity and persistence

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Anne Marie Kellerman; Uppsala universitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; dissolved organic matter; DOM; dissolved organic carbon; organic matter characterization; fluorescence; PARAFAC; molecular weight; mass spectrometry; FT-ICR-MS; boreal lakes; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

    Abstract : Dissolved organic matter (DOM) is a central component of the global carbon cycle. Thus, small changes to the amount of DOM imported, processed and produced within lakes can have a large effect on regional carbon budgets. In addition to being a vital energy source at the base of the aquatic food web, DOM is physico-chemically reactive. READ MORE

  3. 3. Removal of natural organic matter by enhanced coagulation in Nicaragua

    University dissertation from Stockholm : KTH

    Author : Indiana García; KTH.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; drinking water; surrogate parameters; enhanced coagulation; natural organic matter; NATURAL SCIENCES Chemistry Environmental chemistry; NATURVETENSKAP Kemi Miljökemi;

    Abstract : The existence of trihalomethanes (THMs) in a drinking water plant of Nicaragua has been investigated in order to see whether the concentration exceeded the maximum contaminant level recommended by the environmental protection agency of the United States (USEPA) and the Nicaragua guidelines. The influence of pH, temperature, chlorine dose and contact time on the formation of THMs were studied. READ MORE

  4. 4. Mineralisation rates of natural organic matter in surface sediments affected by physical forces

    University dissertation from Tema vatten i natur och samhälle

    Author : Carina Ståhlberg; Linköpings universitet.; Linköpings universitet.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sediment; Organic matter mineralisation; Organic matter degradation; Redox; Electron acceptor; Resuspension; Advective pore water flow; NATURAL SCIENCES Chemistry Other chemistry; NATURVETENSKAP Kemi Övrig kemi;

    Abstract : Nedbrytning av organiskt material är en nyckelfaktor som påverkar omvandlingar av de många grundämnen som utgör eller är associerade till just organiskt material. En stor del av nedbrytningen av akvatiskt organiskt material (OM) sker i gränsskiktet mellan sediment och vatten. READ MORE

  5. 5. Virus Fate and Transport in Groundwater Organic matter, uncertainty, and cold climate

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Jean-Marc Mayotte; Uppsala universitet.; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; managed aquifer recharge; organic matter; virus; numerical modeling; uncertainty; Hydrology; Hydrologi; Mikrobiologi; Microbiology;

    Abstract : Water managers must balance the need for clean and safe drinking water with ever-increasing amounts of waste-water. A technique for treating and storing surface water called “managed aquifer recharge” (MAR) is frequently used to help maintain this balance. READ MORE