6 uppsatser
… the wastewater with focus on the composition of carbohydrates, lignin and extractives and its influence on the biodegradability. Measurements have been carried out on total samples, suspended solids, colloidal and dissolved substances using GF/A and ultra filtration …
… values for bulk density, durability and fines. A significant decrease of extractives was observed between storage time 242 and 325 days. Mean extractive content were 2.64 % in stemwood and 3.89 % in whole tree assortment. Mean ash content were in stemwood 0.42 % and 0.61 % in …
… that differ from normal biomass, such as high amount of ash and extractives. High ash content leads to secondary reactions in the reactor, which leads to lower yields of bio-oil. Because of this the knots are not an optimum raw material for fast pyrolysis. At the same time high …
… in form and dimensions and it becomes darker and looses several unwanted extractives such as resin. Disadvantages that can be mentioned are that the wood becomes fragile and the strength properties changes. My main purpose with this study is to look into customer involvement in …
Fundamentteknik och Logistik
… analysis showed that toxicity of the water to be treated, due to wood extractives and sulphur content, was of concern. Detoxification chemicals targeting these constituents where used in the anaerobic treatment trial. The trial consisted of a two chamber upflow reactor and …
… analysis showed that toxicity of the water to be treated, due to wood extractives and sulphur content, was of concern. Detoxification chemicals targeting these constituents where used in the anaerobic treatment trial. The trial consisted of a two chamber upflow reactor and …
