Sökning: "water exchange"

Visar resultat 11 - 15 av 290 uppsatser innehållade orden water exchange.

1. 11. Remediation of per- and polyfluoroalkyl substances (PFAS) in contaminated water by sorption to pine- and spruce bark

   Kandidat-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

   Författare :Rebecka Ayranci Dahlberg; [2023]
   Nyckelord :Per- and polyfluoroalkyl substances; sorption; pine bark; spruce bark; ultra-short-chain PFAS; short-and long-chain PFAS; elemental analysis; field-test;

   Sammanfattning : PFAS are anthropogenic substances used in many different industrial operations and products because of their unique properties. Due to their negative impact on human health and environmental bioaccumulative characteristics different authorities have addressed the issue. In Sweden the limit is4 ng/L for four different PFAS in drinking water. LÄS MER

3. 12. Upscaling agroecology in Sweden : a participatory-backcasting approach to investigate top-down measures for promoting an agroecological transition of the Swedish agricultural system

   Master-uppsats, SLU/Dept. of People and Society

   Författare :Pablo Ratti; [2023]
   Nyckelord :Agroecology; transition; top-down; scenario; participatory policies;

   Sammanfattning : Alongside its important contribution to the increase of yields, industrial agriculture has also generated environmental, social and economical negative side effects. Moreover, the forecasted growth of the world’s population puts more pressure for solutions on how to increase food supply while reducing the negative effects of the current agricultural system. LÄS MER

4. 13. Regnvattenåtervinning i svenska urbana byggnationer : barriärer och incitament för ökad implementering

   Kandidat-uppsats, Malmö universitet/Institutionen för Urbana Studier (US)

   Författare :Ida Isaksson; [2023]
   Nyckelord :RWH; regnvattenåtervinning; transition theory; urban design; vattenbesparing; hållbar stadsplanering; vattenlagstiftning;

   Sammanfattning : Abstract  The use of alternative water resources such as rainwater where drinking water quality is dispensable is an important measure towards a more sustainable water management. Despite raised awareness of future water scarcity, and despite a growing field of theoretical and practical competence, the development of rainwater reuse is progressing slowly in Sweden compared to other European countries. LÄS MER

5. 14. Characterisation of Ionic Liquid doped Polybenzimidazole Membranes for Application in High-Temperature Proton Exchange Membrane Fuel Cells

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Adam Jacobsson Trönndal; [2023]
   Nyckelord :Fuel cells; Phosphoric acid; Polybenzimidazole; PA-PBI; Ionic liquid; IL; High temperature proton exchange membrane fuel cell; HT-PEMFC; Electrochemical impedance spectroscopy; EIS; IL-PBI; Chemical engineering; Technology and Engineering;

   Sammanfattning : In this study four membranes were tested and evaluated against each other for use in high-temperature proton exchange membrane fuel cell (HT-PEMFC) applications. A phosphoric acid (PA) doped polybenzimidazole (PBI) membrane, was used as a reference as the current state-of-the-art. LÄS MER

7. 15. Investigating the potential dependence of the apparent diffusivity of lateral self-exchange on mesoporous ZrO2 film

   Kandidat-uppsats, Uppsala universitet/Institutionen för kemi - BMC

   Författare :Paul Wefer; [2023]
   Nyckelord :Lateral self-exchange; mesoporous film; D35; spectroelectrochemistry;

   Sammanfattning : Lateral self-exchange of charge across dye-sensitized film is a phenomenon that may play animportant role in effectivizing H2 production from water via solar energy, and shows potential forother interesting applications. The rate of charge movement via lateral self-exchange across afilm is often quantified in terms of apparent diffusivity of charge, Dapp. LÄS MER