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796 Uppsatser om Anaerobic digestion of organic waste - Sida 11 av 54

Kravspecificering av avgaspannor

This report describes the work of developing a specification of requirements for Waste Heat Recovery Units. The main part of the paper describes how the work with the specification of requirements has been performed. One specific question to be answered is:What are the customer?s demands in case of properties for the Waste Heat Recovery Units and how is that information collected as an order documentation to suit the business area Oil & Gas?The report begins with a description of the assignment and continues with the aim and background. A theoretical part describes the different areas and methods that have been important during the process.

How strain and production system effects chicken welfare and quality in meat : a literature review

There are several reasons why organic chicken production is scarce in Sweden. Lack of slow growing (SG) strains combined with higher production costs, lower meat-yield and uncertainty of consumers? willingness to pay seems to be the main reasons. EU-legislations imply use of indigenous slow- or medium growing strains in organic production, nevertheless, fast growing (FG) broilers are often used due to their effectiveness. Increased consumption of processed food creates a market for conventionally rearing of very heavy broilers.

Kloridutlakning från flygaska : möjligheten till en lokal hantering

In Sweden, there are limits to how much leachable substances waste must contain in order to be deposited as hazardous waste. Fly ash from waste incineration often end up over the limit, mainly due to the chloride content. Fly ash is therefore often deposited abroad. The purpose of this study was to investigate the possibility to handle fly ash locally. To clarify how the law is applied, environmental reports and permit documents from ten waste sites with permission to deposit fly ash were studied.

100 % svenskt foder till mjölkkor :

As for today, a large quantity of protein feeds is imported from other countries to be used in the Swedish dairy production. The main import is soya from Brazil. The soya-production in Brazil results in negative consequences for the natural environment in the area, and the long transport of the feeds requires a lot of energy. The organic dairy production in Sweden is, with the highest probability going to be forced to use 100 % organic feed to the cows in the year 2005, due to new EU-rules. These are some of the causes why there are reasons to look closer at the possibilities to feed Swedish cows with only Swedish feeds. In this study, I have looked at the KRAV-rules for organic feeding, where the goal is feeding with only KRAV-approved feeds.

Böklåda med torv på rastgårdsytan i ekologisk slaktsvinsproduktion : effekter på beteende och emission av kväve (NH3 och N2O)

In organic animal production, synthetic amino acids are not allowed. Therefore, a higher level of crude protein is needed in the diet to pigs, which lead to more nitrogen (N) excreted in the faeces and urine. N can be emitted to the air in the form of e.g. ammonia (NH3), which contributes to eutrophication and acidification and as nitrous oxide (N2O), which is a very potent greenhouse gas. The emission of N can be reduced by e.g.

Grovfoder till hästar : hur inverkar olika konserveringsmetoder på hästens digestion?

Hästen är en grovtarmsjäsare anpassad för en gräsdiet vilket medför att grovfodret spelar en viktig roll för hästen ur utfodringssynpunkt. Inplastat vallfoder i form av ensilage och hösilage har ökat som grovfoder. Grovfoder kan genom olika metoder konserveras till hö, ensilage eller hösilage. De olika konserveringsmetoderna medför att fodret får olika biokemisk och mikrobiell sammansättning. Hö torkas till hög torrsubstans halt (ts-halt) för att förhindra oönskad mikrobiell tillväxt.

BIODIVERSITETS P?VERKAN P? M?NGDEN ORGANISKT MATERIAL I ALSUMPSKOG: En fallstudie i fyra alsumpskogar p? svenska v?stkusten

Globally, coastal ecosystems like mangrove forests, sea grass meadows and salt marshes are well known for their ability to capture and store atmospheric carbon effectively. In Sweden, there is still limited knowledge about local coastal ecosystems with similar functions, with alder swamp forests being an interesting example. Therefore, this study aimed to increase knowledge of the factors that can contribute to the potential carbon sequestering ability of alder swamps. Vegetation data and sediment samples were collected from a total of 37 sampling plots across four alder swamps in Bohusl?n on the Swedish west coast.

Emissioner i slutna utrymmen Med speciell inriktning på emissioner av formaldehyd och organiska syror

This study aimed to evaluate the levels of formaldehyde and organic acids that can build up within enclosed spaces. Another goal was to compare two types of paints that can be used as coating barriers within showcases and in turn compare them to the modern, and by many highly recommended, material of Marveseal®. A low volatile waterborne alkyd/acrylate paint and a two component polyurethane paint was compared to Marveseal® in two series of experiments. One series measured the level of formaldehyde, and thus the effectiveness of the three chosen barriers, and the other series measured the level of volatile organic acids, both the acids emitted from the paint itself, and that of the wood. One box in each series were not treated at all and was used as a reference.The fact that different types of materials emit volatile organic compounds have long been known.

Reducering av kassationer på Cloetta Fazer AB

This master?s thesis was performed during the fall of 2006 at Cloetta Fazer AB in Ljungsbro. Cloetta Fazer is the market leader in Scandinavia of manufacturing confectionary and chocolates. The purpose of the project has been to identify causes that impact the quantity of waste in production as well as a cost/benefit analysis of the solutions that can reduce the problem of production waste.The work includes four production lines that are individually designed depending on what kind of product that are produced on the line. By using qualitative and quantitative methods such as focus groups, interviews and observations data has been collected.

Biogas Produktion i Abu Dhabi ? En Utvärdering baserad på Energi och Ekonomi (Jämförelse av två teknologier)

Det är många faktorer som bestämmer val av tak i olika situationer idag. Den största frågan som uppstår handlar oftast om kostnaden. I intervjuer och studier har en sammanställning gjorts som beskriver alternativen grönt tak eller traditionella svarta tak på det nya badhuset i Umeå ur de tre hållbarhetsdimensionerna.Det extensiva gröna taket visar sig vara mer bullerdämpande, förbättrar luftkvaliteten i tätbefolkade och trånga städer. Det gröna taket har även en förmåga att ta upp ca 50 % av den årliga nederbörden. Något som gör det gröna taket mer hållbart ur ett miljömässigt perspektiv.

Slöserijakt i betongdjungeln : En tidseffektivisering av monteringsprocessen inom stål- och betongprefab

The different aspects of each individual construction project such as the general conditions, design and economic restrictions as well as many more factors mean it is difficult to standardize building processes or plan in detail based on past experiences. As a result operational efficiency is often reduced, and unnecessary waste is generated. To make an organization more efficient and therefore reduce waste production everybody involved needs to appreciate and understand the improvements that can increase the organization?s efficiency. To investigate these improvements a time study was performed on two different construction sites, both of which involved buildings being constructed of prefabricated steel and concrete elements.

Utredning av energieffektiviseringspotential i ett flerbostadshus : Avseende på injustering av värmedistributionssystemet och installation av värmepump

The different aspects of each individual construction project such as the general conditions, design and economic restrictions as well as many more factors mean it is difficult to standardize building processes or plan in detail based on past experiences. As a result operational efficiency is often reduced, and unnecessary waste is generated. To make an organization more efficient and therefore reduce waste production everybody involved needs to appreciate and understand the improvements that can increase the organization?s efficiency. To investigate these improvements a time study was performed on two different construction sites, both of which involved buildings being constructed of prefabricated steel and concrete elements.

Välfärd i ekologisk och konventionell grishållning :

Organic animal husbandry has received a lot of criticism lately. The aim of this literature review was to examine if the rules and principles of organic pig farming give better or worse welfare in comparison to the conventional systems in Sweden. Health, physiology and behaviour have been used as indicators of welfare in this study. This is due to the importance of using more than one indicator in welfare assessments. Studies have shown that organic pigs have more remarks on joints when slaughtered, but these remarks can be reduced by vaccination against erysipelas.

Can the small-scale cooperatives in Serbiabe successful organic producers?

This thesis is part of the evaluation of a development project in Serbia, where cooperativeshave been formed in order to make the members support themselves trough organic farming.The purpose of the paper has been to find out if the goal of making the current members andpotential new members able to support themselves on what the cooperatives produce, hasbeen reached. The goal is to be considered as partly fulfilled; according to the last annualreport from Odraz, ?the registered cooperatives have become fully functional and stable andthey have started making some modest profit.???the majority of the beneficiaries think thatthey are self-reliant??. In order to find out what is required in order to fulfil the establishedgoal entirely, (for example there are no reports of that new members have been recruited, andthe fact that most, not all, current members of the cooperatives (the beneficiaries) say thatthey are supplied from what the cooperatives produce), I have tried to identify the conditionswhich the cooperatives operate under. The basis of the paper consists of a literature review,interviews with the directors of the cooperatives, a questionnaire dealing with the businessenvironment and various external sources in Serbia..

Arbetsmiljövänliga låsvätskor i stötdämpare

This master thesis is a study of anaerobic thread lockers and is done in cooperation withÖhlins Racing AB, which is a Swedish manufacturer of vehicle suspensions.The suspension in vehicles is constantly exposed to high vibration levels and a suspensionunit has several screw- and cylindrical joints. As an extra safety precaution so that thecomponents in the suspension doesn?t fall apart when using the vehicle, an anaerobicthreadlocker is added in these joints. The handling of these threadlockers is not totallyharmless and could lead to allergic reactions, and therefore there are Swedish laws to limit theuse of these. However, new types of anaerobic threadlockers have recently been launched onthe marked that are not considered under this law.

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