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- Bohman, Anna, 1975-
(författare)
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Framing the Water Challenge : Multilateral donor policies for water supply and sanitation 1960-2005
- 2006
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Opinions on what is best way to provide more people in low income countries with adequate water and sanitation services have changed over time. A recent policy paradigm suggests that private companies should be involved in WSS service provision to improve the situation for those in need. This study looks at how issues of water supply and sanitation (WSS) have been confronted by the international donor community and how strategies to improve performance in this sector have changed from the early 1970’s up until today. The evolution of ideas and strategies are linked to overall development policies in order to better understand the forces that have shaped policy redirections in the sector. In addition, the case study of Ghana gives a preliminary picture of how donor policies have been played out in a national context. The concept of problem frames is used as an analytical tool in order to highlight how ideas change and replace each other but also to illustrate how problem frames are becoming more inclusive as new knowledge and experiences are gained. The study finds that while hardware knowledge such as engineering skills were put at the forefront to begin with, software matters such as capacity building and appropriate management of the sector gained increased attention with time. As the water challenge becomes increasingly framed as a matter of managing scarcity, the economic value of water is emphasized and private sector participation is promoted on a larger scale. With time the cross sectoral nature of the WSS issue gains increased attention as its overall impact on poverty reduction and environmental sustainability is emphasized. This holistic approach also contributes to an increased emphasis on sanitation as important to sustainable WSS systems and services. The case study of Ghana shows that all in all, institutional change within the Ghanaian WSS sector during the post independence era, mirror international policy trends. Power is moving out from the state in different directions and responsibilities are gradually hived off from the central organization to local authorities or other agencies working on specific issues. Subsidies on water tariffs are abolished and at the end of the period the private sector is also invited to act in the sector. However, recent trends indicate that as democracy deepens and civil society is growing stronger this also effects policy development in the Ghanaian WSS sector.
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| 2. |
- Folkeson, Nicklas, 1981, et al.
(författare)
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Fireside corrosion of stainless and low alloyed steels in a waste-fired CFB boiler; The effect of adding sulphur to the fuel
- 2008
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Ingår i: Materials Science Forum. ; 595-598, s. 289-297
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Tidskriftsartikel (refereegranskat)abstract
- Corrosion field tests have been carried out in the superheater region of a commercial waste-fired 75MW CFBC boiler using air cooled probes. Exposure time was 24 and 1000 hours. The effect of adding sulphur to the fuel on the corrosion of two high alloyed steels and a low alloyed steel was studied. The fuel consisted of 50% household waste and 50% industrial waste. The exposed samples were analyzed by ESEM/EDX and XRD. Metal loss was determined after 1000 hours. Both materials suffered significant corrosion in the absence of sulphur addition and the addition of sulphur to the fuel reduced corrosion significantly. The rapid corrosion of the high alloyed steel in the absence of sulphur addition is caused by the destruction of the chromium-containing protective oxide by formation of calcium chromate. Adding sulphur to the fuel inhibited chromate formation and increased the sulphate/chloride ratio in the deposit. Iron(II) chloride formed on the low alloyed steel regardless of whether sulphur was added or not.
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