131 uppsatser · sida 5 av 9
… oils, flavonoids, tanning agents, resins, silica, carbohydrates, coumarins, organic acids and terpenes. Essential oils derived from angelica root are composed of over 60 different constituents. ??phellandrene and ??pinene have the highest concentration in root oil but sabiene …
… process parameters to control are pH and buffer capacity (alkalinity/volatile organic acid ratio). This is because the digester easily gets acidic. Based on these results it’s hard to suggest fodder beet usage in a greater extent when being mixed with only cow manure for biogas …
… other things, dissolved oxygen (DO) and water saturation as well as amount of organic matter in the sediments. There was trend that DO was negatively correlated to the CH4 -rate, telling us that with less O2 present the more CH4 will be produced. The opposite could be found for …
… parcels. There are several factors controlling the rate of decomposition of organic matter. The period when the study was performed was very dry and the decomposition process was probably limited by the low levels of soil water content. Changes in soil temperature and soil water …
… 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 …
With a starting point in the legislation for organic production set up by the Swedishcertification organization KRAV, the reasons to why these regulations are important isexplained and how pigs are affected by these rules. The study also shows how well the pigscope in the …
växtnäringsförsök och litteraturstudie
… of the cultivar Aromata planted in a medium of soil:peat (1:1) enriched with organic nutrients and lime, were fed with comfrey liquid plus Biofer, in three different concentrations. Two different concentrations of BioRika were used as comparison, along with an unfertilized …
… produce VFA by hydrolysis and fermentation of primary sludge. In this way the organic material in the incoming wastewater can be used in biological phosphorus removal. The sludge temperature, total solids (TS) and retention time are regarded as important parameters for a …
omfattning och miljökonsekvenser
… recipient. The log yard run-off contains phosphorus, nitrogen, phenols and organic substances. These substances can cause problems for the surrounding environment. The main objective of this project is to gain an understanding of the wet storage used by the Swedish wood industry …
en jämförelse mellan tre alternativ
… for system 1 were the possibility to market the residue as a certified organic fertilizer whereby the plant nutrients represents a relatively high economical value, and a reduction in global warming emissions due to avoided use of mineral fertilizer. The downsides are large …
en potentialstudie i Biogas Öst-regionen
… can be produced by upgrading landfill gas which is formed by degradation of organic waste. This thesis investigates the potential of producing vehicle fuel from landfill gas in the region of Biogas Öst. In 2008, an amount of 32 million Nm3 landfill gas was extracted in the …
En studie om oregelbundna arbetstider på Ålands hälso- och sjukvård
… we choose to eat since food production has a big impact on the environment. In organic production the aim is to have a natural production process, where environmental impacts are minimized. By choosing organic food it is therefore possible to contribute to a better environment …
… we choose to eat since food production has a big impact on the environment. In organic production the aim is to have a natural production process, where environmental impacts are minimized. By choosing organic food it is therefore possible to contribute to a better environment …
jämförelse av befintlig pastörisering med integrerad termofil hygienisering på Kungsängens gårds biogasanläggning i Uppsala
… 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 …
En litteraturstudie och rötning i labbskala
… Analyses of gas production, gas composition, content of dry matter and organic matter, carbon / nitrogen-ratio and pH have been performed.The results from lab scale digestion show that the pea residue has a methane potential of 300-400 liters of methane per kg VS during 25 days …
