Sök:

Sökresultat:

4210 Uppsatser om Increased organic loading rate and pasteurization. - Sida 1 av 281

Energianalys av hygieniseringssystem : jämförelse av befintlig pastörisering med integrerad termofil hygienisering på Kungsängens gårds biogasanläggning i Uppsala

The biogas plant Kungsängens gård, owned by Uppsala Vatten och Avfall AB, produces biogas and biomanure from organic household waste, food processing waste and slaughterhouse waste. In year 2012, 4.4 million Nm3 of biogas were produced from 25 200 tons of waste. Before digestion all substrate is sanitized by pasteurization at 70°C in order to kill pathogens. Another method, integrated thermophilic sanitation (ITS), is of interest in order to decrease the energy demand. The method implies that the substrate is sanitized during ten hours in the digestion chamber, where the temperature is 52°C.

Energianalys av hygieniseringssystem : jämförelse av befintlig pastörisering med integrerad termofil hygienisering på Kungsängens gårds biogasanläggning i Uppsala

The biogas plant Kungsängens gård, owned by Uppsala Vatten och Avfall AB, produces biogas and biomanure from organic household waste, food processing waste and slaughterhouse waste. In year 2012, 4.4 million Nm3 of biogas were produced from 25 200 tons of waste. Before digestion all substrate is sanitized by one hour?s pasteurization at 70°C in order to kill pathogens. Another method, integrated thermophilic sanitation (ITS), is of interest in order to decrease the energy demand.

Biogasproduktion genom tvåstegsrötning av drankvatten

During the 19-century a global warming has been observed, which includes increases in global air and ocean temperatures, widespread melting of ice and snow, and rising global sea level. There is a clear connection between emissions of greenhouse gases caused by the human and the increase in temperature. Climatic changes caused by global warming can be stopped trough decreased emission of fossil fuels, for example by an increased use of biogas. Biogas is a renewable energy source which is produced through anaerobic (oxygen free) digestion of organic material. The gas is a mixture of methane (CH4) and carbon dioxide (CO2) and can be among others used as fuel in vehicles.

Biogaspotential vid samrötningav mikroalger och blandslam från Västerås kommunala reningsverk

Because of the increasing trends in energy consumption and increased environmental awareness, greater focus has been placed on improvement and development of renewable energy sources. An already proven and accepted method is biogas production from anaerobic digestion at municipal wastewater treatment plants.In the waste water treatment process solid material and dissolved pollutants are separated from the water, forming a sludge. The sludge is separated from the process and stabilized during anaerobic digestion or aerobic aeration. Most often, mesophilic anaerobic digestion is used. Because of degradation by microorganisms, biogas with a high content of methane is formed during the digestion.

Ekologiska perenner - Lokalt och globalt : En Intervju- och Litteraturstudie

AbstractThe customer demand for ecological products has increased in recent years, within the garden industry this mainly concerns herbs and other edible plants. The organic trend is increasing and more people are aware of the environment and want to take responsibility for it through their purchases for their garden as well.In this essay the aim is to investigate customer demand and the possibility of selling organicperennial plants in eight garden centres on the Åland islands and in Gävle/Sandviken. I include two garden centres with an organic profile to get a wider point of view. I investigate the global market for organic perennials and look further into existing certification standards on the Swedish market today.The methods I have been using are interviews and a literature study.The study shows that the experienced demand for organic perennials is small in both of myinvestigated groups. The biggest motivation for starting to sell organic perennials would be to find a supplier of these plants and that more customer would ask for them.

Möjligheter att utfodra överskottsmjölk till kalvar efter pastörisering

Good feeding practices are a basic aspect of good calf health. During the calf's first few months the calf is fed with purchased milk replacer or raw milk straight from the cow. On all farms, it will be a surplus of milk that may not be delivered to the dairy for various reasons. Milk that may not be supplied to the dairy includes colostrum and milk with unnormal properties, including milk from cows suffering from mastitis. This study investigated the possibility of improving the milk by pasteurization in order to secure its use as feed for calves and thereby obtain an improved calf health.

Ekolådan : En fallstudie av ett ekologiskt livmedelsföretag, som finns på nätet

AbstractFor several years, the organic food sales have increased, and more are choosing to buyorganic food of more diverse causes. Unfortunately the sales have slowed down the past year,a lot depends on the Swedish economy has been in decline and it has led to more will checkone more time on the price. But even if the sale value has decreased, the amount of organicfood has increased, it is because many stores have their own organic brands and they can pushprices down.The internet has become a great help in our daily lives, we do most our business via theInternet. But now we are not just paying our bills through the Internet anymore, we shopclothes, movies, music and books too. E-commerce was become more serious last decade andhas grown every year that has passed.

Mångfald och interkulturell utveckling : En studie av två kulturverksamheter i Värmland

AbstractFor several years, the organic food sales have increased, and more are choosing to buyorganic food of more diverse causes. Unfortunately the sales have slowed down the past year,a lot depends on the Swedish economy has been in decline and it has led to more will checkone more time on the price. But even if the sale value has decreased, the amount of organicfood has increased, it is because many stores have their own organic brands and they can pushprices down.The internet has become a great help in our daily lives, we do most our business via theInternet. But now we are not just paying our bills through the Internet anymore, we shopclothes, movies, music and books too. E-commerce was become more serious last decade andhas grown every year that has passed.

Ekologisk nötköttsproduktion i Gävleborgs län :

The objective of this study was to make an inventory and a potential analysis of the organic beef production in the region of Gävleborg, Sweden. A survey was conducted, where a questionaire was sent to all farmers in the region who had environmental subsidies concerning organic cropping systems in 2001. In total, there were 701 farmers, of which 46 % participated in the study. Three slaughter houses were interviewed to get their pictures of the development of organic beef production. The study shows that there are potentials and interests in the region to increase the production of organic beef.

EN ÖKANDE BOLÅNEMARGINAL - En redogörelse för penningpolitikens inverkan på bostadsmarknaden - Nationalekonomi

The general consensus is that the gap between the Swedish variable mortgage rate and the repo rate has increased over the last years. Although the Riksbank in recent times has cut its base rate, many banks have chosen either to leave the interest rate on variable mortgages unchanged, or they did reduce it but by less points than the reduction in the repo rate. The linear relationship between the repo rate and the variable mortgage rate has changed over the last decade and the mortgage margins these days are relatively high. This can somewhat be explained by the new rules introduced in the bank sector requiring banks to increase liquidity and equity. Since mortgage loans play an important role in banks? lending business it is of interest to gain knowledge in whether a repo rate reduction latterly has generated a limited affect on the banks lending rates..

Konsumentens dilemma : ekologiskt eller konventionellt?

A majority of Swedish consumers have a positive attitude towards organic production and the number of organic products on the market is increasing. Despite these positive trends, there are still relatively few consumers who choose to buy organic produced products. According to statistics, only 3% of the total sales of food consist of organic products. The aim with this essay is to understand what is needed, both from the grocery store and the consumer's point of view, to increase the consumption of organic food. Information has been collected partly through questionnaire with consumers and partly through analysis of sales statistics for a selected numbers of products. Then the empirical material have been analysed in the light of a combination of the Behavioural Perspective Model (Foxell, 1997) and Kotler's Four P:s (Kotler, 2002). Consumer's willingness to buy organic products is influenced by a number of different factors. One important thing is if the grocery store offers a behaviour setting that stimulates the consumers positive attitude and facilitates their possibilities to collect new information. Furthermore, the store needs to offer a broad and well-visualised selection of organic products.

Att sälja grönt är skönt - En studie om att öka försäljningen av ekologiska varor

The interest for organic food has grown a lot over the last 15 years. Even so, only 3.5 % ofthe share of wallet in Sweden goes to organic food. The purpose of this study is to examine and describe how retailers can get consumers to buy more organic fruits and vegetables. The study was carried out by visiting six Coop Konsum-stores, of which three performed poorly and three performed well in organic sales. We conducted interviews with the department managers, customer surveys and in-store observations.

Entrepreneurship as a tool for increased organic growth in large, established countries

We have conducted a case study on Trelleborg AB to examine how entrepreneurial the company is. We used a model called "entrepreneurial orientation (EO) with five dimensions that should be considered when striving to be entrepreneurial. The goal of being entrepreneurial in this thesis is achieving organic growth. The contingency of the case company determines the generalizability of the finding..

Sjöars känslighet för klimatförändringar ? vilka faktorer påverkar?

The Earths climate is changing at a higher rate, i.e between 1861 and 1994 the annual mean temperature in Scandinavia increased with 0,68º C and according to recent climate models the annual mean temperature is likely to rise with another 3º C during this century.A warmer climate in many ways is associated with changing conditions for lake ecosystems. An expected higher water temperature and a stronger summer stratification of the water column increases the risk of anoxic conditions at the lake bottom. Thus anoxic conditions are likely to cause a phosphate leakage from the sediment, i.e. a higher internal loading of phosphate.In this project, the extremely warm summer of 2002 has been used as an example for a possible scenario for a future climate. By comparing levels of phosphorus in the summer of 2002 with a ten-year median value, a phosphorus related sensitivity to climate change has been analyzed for 55 Swedish lakes.

Ekologiska livsmedel i kommunal verksamhet : Fallstudie över Ludvika kommuns satsning på ekologiska livsmedel inom skola och äldreomsorg

Organic food is produced in a way that strives towards maintaining and improving natural resources. The welfare of both producers and consumers is central, also taking both animals and the environment into account. The Swedish government finds this important and in 2006 they made a resolution that the consumption of organic food should be stimulated. The goal was that 25 % of the municipalities? consumption of food should be organic in 2010.The municipality of Ludvika reached the government's target in 2011 and is currently increasing their proportion of organic food by one new product every year.  Ludvika is a member of The National Association of Swedish Eco-municipalities and the town of Ludvika is also a Fairtrade city.

1 Nästa sida ->