Search for dissertations about: "water activity"

Showing result 1 - 5 of 517 swedish dissertations containing the words water activity.

  1. 1. Water oxidation From Molecular Systems to Functional Devices

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Quentin Daniel; KTH.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Water oxidation; Renewable energy; Electrochemistry; EPR; Devices; Molecular system; Characterization; Kemi; Chemistry;

    Abstract : The production of hydrogen gas, through the process of water splitting,is one of the most promising concepts for the production of clean andrenewable fuel.The introduction of this thesis provides a brief overview of fossil fuelsand the need for an energy transition towards clean and renewable energy. READ MORE

  2. 2. Extending Wastewater Treatment Process Models for Phosphorus Removal and Recovery : A Framework for Plant-Wide Modelling of Phosphorus, Sulfur and Iron

    University dissertation from Division of Industrial Electrical Engineering and Automation, Faculty of Engineering, Lund University

    Author : Kimberly Solon; Lunds universitet.; Lund University.; [2017-04-24]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Benchmark Simulation Model; Anaerobic Digestion Model; Activated Sludge Model; Physico-chemistry; Phosphorus removal; Nutrient recovery;

    Abstract : As problems associated with shortage in resource supply arise, wastewater treatment plants turn to innovation to transform themselves into resource recovery facilities. Water groups worldwide recognize that wastewater treatment plants are no longer disposal facilities but rather sources of clean water, energy and nutrients. READ MORE

  3. 3. Irrigation water management : A performance study of the Rahad scheme in Sudan, 1977-1996

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Nighisty Ghezae; Uppsala universitet.; [1998]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economic history; Rahad scheme; irrigation management; water supply activities; agricultural extension activity; performance assessment; main system management; on-farm management; organizational structure; Ekonomisk historia; HUMANITIES and RELIGION History and philosophy subjects History subjects Economic history; HUMANIORA och RELIGIONSVETENSKAP Historisk-filosofiska ämnen Historieämnen Ekonomisk historia; Ekonomisk historia; Economic History;

    Abstract : The central objectives of this study is to assess the performance of irrigation water management of the Rahad scheme in Sudan between 1977 and 1996.The study assesses how well the scheme has succeeded in achieving irrigation management objectives using the criteria of productivity, equity, cost recovery and environmental stability. READ MORE

  4. 4. Water Supply in Tanzania and Performance of Local Plant Materials in Purification of Turbid Water

    University dissertation from Stockholm : KTH

    Author : Nancy Marobhe; KTH.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Antibacterial effect; Coagulant proteins; Vigna unguiculata; Parkinsonia aculeata; Ion exchange; Tanzania water supply; TECHNOLOGY Civil engineering and architecture Water engineering; TEKNIKVETENSKAP Samhällsbyggnadsteknik och arkitektur Vattenteknik;

    Abstract : Water supply services in urban and rural areas of Tanzania were reviewed and specific studies were carried out on water supply and on purification of turbid water sources using locally available plant materials in rural villages of Singida Rural District. The review showed that large proportions of urban and rural populations in Tanzania face acute water supply problems mainly due to poor planning, implementation and management of water supply projects, including an inability to address social, technical, operation and maintenance and financial issues. READ MORE

  5. 5. Enhanced Biological Phosphorus Removal -Processes, Competing Substances and Tools for Operation of Wastewater Treatment Plants

    University dissertation from Department of Water Resources Engineering, Lund Institute of Technology, Lund University

    Author : Eva Tykesson; Lunds universitet.; Lund University.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Miljöteknik; pollution control; Environmental technology; chemical precipitation; glycogen accumulating organisms; polyphosphate accumulating organisms; wastewater treatment; biological phosphorus removal; kontroll av utsläpp;

    Abstract : Popular Abstract in Swedish Avloppsvatten renas från fosfor för att minimera utsläppet till sjöar och hav. Näringsämnena fosfor och kväve bidrar till övergödningen i våra vatten och kan reduceras kraftigt på avloppsreningsverken. READ MORE