AbstractDegree thesis Solid content in Lime Mud By Andre Flodin Process operator program ? Umeå University 17/6 ? 2014 Pages: 21A thesis was made on Billerudkorsnäs production unit in Karlsborg where lime kiln in the causticising department of chemical recovery plant does not meet the required production. Causticising department is the final step in the chemical recycling unit. There, the filtered green liquor is mixed with lime to recover the cooking chemicals used in the pulp factory. The cooking liquid is called white liquor.

Sweden?s energy consumption is divided into three major sectors. One of them is the industry sector. One third of Sweden?s energy consumption is converted in the industries.

Chemical stabilization of mine waste from Ljusnarsbergsfältet with sewage sludge and calcium carbonate residuesMine waste from Ljusnarsbergsfältet in Kopparberg, Sweden, is considered to constitute a great risk for human health and the surrounding environment. Some of the waste rock consists of sulphide minerals. When sulphide minerals come into contact with dissolvedoxygen and precipitation, oxidation may occur resulting in acid mine drainage (AMD) and the release of heavy metals. The purpose of this study has been to characterise the waste material and try to chemically stabilize the waste rock with a mixture of sewage sludge and calcium carbonate. The drawback of using organic matter is the risk that dissolved organic matter can act as complexing agents for heavy metals and in this way increase their mobility.

This study concerns the experiences and feelings students in intermediate school gain from the changing room to sports class. It is a qualitative study with a socio-cultural approach, which has been analysed in a hermeneutic way. The students? voices have been heard through interviews and questionnaires, and furthermore, to get a broader perspective, adults working in school, have also been interviewed. The study shows that many children feel discomfort without clothes in the changing room, furthermore that the absence of adults in this room may add to exercise of power amongst the student, like abuse, direct- and indirect threats or to exclude someone from the group.

Uranium (U) is a naturally occurring component in bedrock and under the "right" conditions it can dissolve and move into the ground water. Since many people in Sweden depend on drilled wells as their main drinking water supply, they may be exposed to the uranium in the water. Radioactive radiation is not the major concern associated with naturally occurring uranium. It is rather the chemical properties of uranium that make it a potential danger to human health. Uranium is proven to have toxic effects with respect to the functioning of the kidneys.

During pulp and papermaking process a huge amount of water is used. The wastewater contains a large amount of pollutants and has to be treated before it reaches the recipient. In March 2004 a new bleaching plant was started up at SCA Graphic Sundsvall AB, Ortviken?s paper mill using peroxide. The production of bleached thermo mechanical pulp and thus the load to the wastewater plant increased.

The purpose of this essay is to examine and compare how womanliness and manliness reveal themselves in different children?s books, mainly focusing on the concept of gender, in both text and images aspects. The questions I have chosen to interrogate are the following:How is the male and female role represented in children's books from a gender perspective, in both images and texts? What gender is generally the main character in children's books? What clothes are the characters wearing in children's books? What kind of occupations do the characters practice in children's books? What kind of qualities or attributes do the characters possess in children's books?When it comes to the selection of the method, I have chosen the use a qualitative method, where I use both a text and image analysis. The essay is based on Hirdman's and Hardning's gender theories and alsow on Nikolajeva's theorie about male and female.

We live in a society where we are not bound to one place. We are encouraged to be mobile and constantly moving between different locations. The life in a convent is a contrast to this; nuns live at a specific place they are bounded to by vows and can not leave. The sisters in the convent of St. Birgitta, Pax Mariae have promised to stay at the same place and live by the rules of the convent.

This study has been about the representation of the Swedish tourism company Swanson?s. They do trips in US and every year they do a brochure with many pictures. The objective of my study is to look how pictures help to constructs places. Its often problem with pictures because sometimes they are constructs.

At the end of August 1999, the local government council of Malmö city decided thatthe area known as Kvarteret Bilen would be made available for the European HousingExhibition 2001 (Bo01-mässan). Kvarteret Bilen extends over approximately 80hectars and includes the western parts of the Western Harbour area (Västra hamnen)of Malmö.Kvarteret Bilen as a whole, but especially the western sections of this area, the socalledBo01 section, has been the subject of heated discussions. This is mainly due tothe fact that the ground in question has proven to be contaminated to a certain extentby different chemical compounds. Investigations undertaken during 1998 showed sporadically high concentrations forespecially one chemical group: polycyclic aromatic hydrocarbons (PAH).The first part of the paper describes the use of a mathematical equation (Fetter 1994)to calculate the concentration of PAH from a continuous discharge at a given time byemploying Geographical Information System (GIS). Even the constraints of theequation are discussed, as well as the consequences that follow as a result of usingGIS.The second part of the paper focuses on the connections between the content ofcarcinogenic PAH in Kvarteret Bilen and the ground water level and type of fillingmaterial.

Allanblackia is a genus of trees that grows in the rainforests of West, Central and Eastern Africa. Its big fruits contain seeds very rich in oil which has been used by local communities for cooking and making soaps. The native stands are threatened by overexploitation and the demand for the oil is much greater than the supply. Domestication programs, aiming at introducing the trees to small holder agroforestry systems, have been started for some of the species. The main aim of this study was to investigate the soil requirements of Allanblackia stuhlmannii in terms of chemical and physical parameters, as revealed by the soil conditions in native stands. Another aim was to see if these varied along an altitudinal transect.

This essay is written within my education for Technical Officer in the Swedish armed forces. The essay describes the alternative fuels that the Swedish armed forces can make use of if the supply of fossil fuels is insecure. The alternative fuels that are described and compared are; Synthetic diesel, Organic diesel, Methanol and Ethanol. The essay describes the process of producing the alternatives, the need for modification and the economics for each alternative. The alternatives are compared and assessed for their ability to secure the supply of fuel to the Swedish Armed Forces.

Idag riktar många butiker in sig på sina kvinnliga kunder. De är väl omtalat hur kvinnor handlar och att de ser shopping som ett nöje. Butikerna sätter upp erbjudande för att locka kvinnor att handla mer och göra dem tillfredsställda; då kommer de tillbaka igen. Det läggs inte ner lika mycket tid och engagemang på de manliga kunderna, då det finns olika teorier som säger att män inte tycker om att shoppa. Samtidigt som samhället har förändrats har också männen och kvinnorna förändras.

Evaporation is a part of the chemical recovery department at wood pulping mills. The purpose of evaporation is to remove water from the black liquor, which makes the liquor combustible. The process is very energy demanding, and having a well-functioning model of the system is of greatest interest. The model can then be used to study energy consumption and to test different control strategies. Two models have been developed during the master thesis.

The aim of this paper is to examine how boys in grade nine experience and handle stress, to find reasons why stress occur and what help the boys can get to handle stress in a good way. Our supervisor was Gunilla Lindén. In our study we used qualitative interviews to answer these questions. We interviewed four fifteen- to sixteen-year-old boys and two recreation in-structors. We also conducted a group interview with the boys.