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Organic material used for biogas production can also undergo other treatments. The emissions and impact from the different treatments are evaluated in this environmental assessment, with a focus on energy and climate. The materials included in the study are organic household …
… do not contribute to the greenhouse effect. The growing population generates organic waste originating from industry and households so called organic fraction of municipal solid waste (OFMSW). Through anaerobic digestion, waste can be utilized to produce energy-rich methane gas …
Modellkonstruktion och Utvärdering med ORWARE
… of using pretreatment andanaerobic digestion for waste management of organic waste from a system perspective. Forthis purpose a computer program called ORWARE has been used. ORWARE (organic wasteresearch) is a program for making life cycle assessments of waste management. As the …
The organic farmland is increasing all the time and the goal is that 15 % of the Swedish farmland will be in organic production in year 2010. The organic production needs new and more effective ways to control weeds, and there is the row harrowing coming as a good complement to …
Chemical stabilization of mine waste with sewage sludge and calcium carbonate residues
… 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. An additional study to examine this risk has therefore …
… 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 …
Kartläggning av inkommande avloppsvatten och optimering av driftparametrar
… sludge processes referred to as BIO 1 and BIO 2. The main aim is to reduce the organic substance content, measured as COD (Chemical Oxygen Demand) before the wastewater is released into the environment. Since the effluent produced is very rich in organic substances, the addition …
… 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.
Analys av förhistoriskt organiskt grav- och boplatsmaterial från Barkarby i Järfälla socken, Uppland
This paper deals with prehistoric charred organic material, interpreted as bread, found in graves and in the underlying settlement at Kalvshälla, Järfälla parish in Uppland. The aim was to categorize the organic material morphologically and with the help of Fourier transformed …
… has been to study the gas production, power consumption and the reduction of organic matter and nutrients. The system has been completed with a reverse osmosis unit and a total of four batch runs have been made with good results. The use of reverse osmosis allows nutrient in the …
Organic layers and broilers will according to (EEG) no 2092/91 be fed 100 % organic feeds in year 2012, which is expected to present problems associated with the specific protein requirements of poultry. This document aims at describing the feedstuffs that possibly may …
… 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 …
… Hg export is due to an increased mobilization of complexes associated with inorganic sulphides and/or dissolved organic matter (DOM), whereas increase in MeHg concentrations may in addition be due to an enhanced production in soils of clear-cut areas. The latter process is …
… 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 …
- med fokus på Organisk RankineCykel (ORC)
… district-heating system. When already published reports had been studied, the Organic Rankine Cycle (ORC) was chosen as the most suitable technique. The possibility of using the ORC to generate electricity from the district-heating return flow was considered simultaneously. The …
