13 uppsatser
Modellkonstruktion och Utvärdering med ORWARE
… of this master thesis project was to develop computer models of some plausiblepretreatment techniques and to assess the potential benefits/costs of using pretreatment andanaerobic digestion for waste management of organic waste from a system perspective. Forthis purpose a …
Investigation of bondning mechanisms at the pressing of metal laminates
… to study their influence closer are temperature, pressure, heat treatment and pretreatment. This has been implemented by pressing with varying temperature and pressure. The materials have been pressed at room temperature or heated in an oven at 300 or 600 degrees and pressed …
… storage study to investigate how ethanol yields are affected by microbial pretreatment during storage. Grain was inoculated with L. plantarum Amy 1 or P. anomala J121 alone or a combination of the two and fermentations were performed on the grain after one month and two months …
Bestämning av verkningsgrad
… vehicles and it´s produced in a biogas processconsisting of the steps of pretreatment, digestion and gas cleaning. The pretreatment is a method usedto increase the gas production and / or destroy pathogens. The digestion is the stage when anaerobicmicroorganisms convert bio-mass …
… biogas digesters and facilities warm. Steam is exclusively used in the heat pretreatment. Thermal energy consumption was as following: · Keeping the biogas digester warm consumed close to 20 % of the total heating demand, corresponding to 40,8 kWh/ton. · Heat pretreatment …
… biogas digesters and facilities warm. Steam is exclusively used in the heat pretreatment. Thermal energy consumption was as following: Keeping the biogas digester warm consumed close to 20 % of the total heating demand, corresponding to 40,8 kWh/ton.Heat pretreatment accounted …
… In this study, aspen sawdust was used as lignocellulosic material. After pretreatment with steam explosion and hydrolysis, using enzymes, a hydrolysate was obtained containing dissolved sugars, e.g. glucose. Fermentation of glucose into ethanol was done using two different …
… fractions and more black water into the liquid compost plant, some kind of pretreatment plant is needed.
Avloppsreningsverket Sundet i Växjö har en rötningsanläggning som producerar biogas. Anläggningen består idag av två rötkammare och en maskin för avvattning som substratet går igenom efter rötningen. Substratet som används i rötningsprocessen är avloppsslam från Växjö. Planer …
En litteraturstudie och rötning i labbskala
… and the increase in methane yield as a result of chopping is too small for the pretreatment to be worthwhile. The cost for collecting and chopping the pea residue has been estimated to 473 SEK per hectare or 0,1 SEK per kWh.Practical experience of digesting chopped ensiled pea …
… have been developed during the study. The proposed new method is suitable as pretreatment of the water before discharging it, as it reduces metal emissions and provides better washing results compared to the old method. Significantly larger number of wheels may be washed in one …
En kombination av termisk och kemisk förbehandling
Vid tillverkning av massa och papper förorenas årligen 505 miljoner kubikmeter vatten som måste renas innan det släpps tillbaka till omgivningen. Vid reningen avskiljs först stora partiklar som sedan avvattnas och förbränns. Vattnet som blir kvar genomgår ytterligare en rening …
Today's society is facing major challenges. In order to reduce the climate impact fossil fuels should be replaced with fuels that do not contribute to the greenhouse effect. The growing population generates organic waste originating from industry and households so called organic …
