Selaus nimekkeen mukaan kokoelmassa 2 Tekniikka
Viitteet 26-45 / 135
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Development of microreactor technology for partial oxidation of ethanol on gold catalyst
Acta technologiae chemicae Aboensia : 2019 A/3 (Åbo Akademi - Åbo Akademi University, 06.03.2020)Oxidation of alcohols from biological origin is of significant industrial relevance for the production of fine and specialty chemicals. Aldehydes from polyols are important intermediates in pharmaceutical and alimentary ... -
Development of new halogen-free and multifunctional flame retardants
(Åbo Akademi - Åbo Akademi University, 10.10.2012) -
Eddy break-up based models for industrial diffusion flames with complex gas phase chemistry
(Åbo Akademi - Åbo Akademi University, 11.12.1998)In this thesis, two types of models used in the CFD modeling of practical combustion devices with a turbulent flow are investigated. The models are applied to a number of test cases, but the goal of the investigations are ... -
Effects of Temperature Gradient on Ash Deposit Aging and Heat Exchanger Corrosion
(Åbo Akademi - Åbo Akademi University, 22.11.2019)Boilers firing biomass and/or waste-derived fuel have in general lower electrical efficiencies compared to coal-fired boilers. The root cause for the lower electrical efficiency lies in the high-temperature corrosion of ... -
Electroactive ion exchange membranes based on conducting polymers
(Åbo Akademi - Åbo Akademi University, 14.12.2012)Ion exchange membranes are indispensable for the separation of ionic species. They can discriminate between anions and cations depending on the type of fixed ionic group present in the membrane. These conventional ion ... -
Elemental analysis of wood materials by external millibeam thick target PIXE
(Åbo Akademi - Åbo Akademi University, 13.11.2009) -
Engineering of novel cellulose-based biocomposites and biofoams
(Åbo Akademi - Åbo Akademi University, 15.12.2017)Biomass is a renewable feedstock for producing fine chemicals, polymers, energy, and a variety of commodities. Transformation of biomass into diverse valuable products is the key concept of a bioeconomy. Chemical and ... -
Enhancing performance of paper coatings by tailor-made plastic pigments
(Åbo Akademi - Åbo Akademi University, 01.07.2011)The paper industry is constantly looking for new ideas for improving paper products while competition and raw material prices are increasing. Many paper products are pigment coated. Coating layer is the top layer of paper, ... -
Enzyme electrode configurations : for application in biofuel cells
Report / Åbo Akademi, Process Chemistry Centre : 12-01 (Åbo Akademi University, Process Chemistry Centre, 17.02.2012) -
Epoxidation of vegetable oils : process intensification for biomass conversion
Acta technologiae chemicae Aboensia : 2019 A/22019 A/2 (Åbo Akademi - Åbo Akademi University, 15.01.2020)Oils extracted from plants, algae, seeds and wood are one of the vast biomass resources which can be used to elaborate a wide range of products. Tall oil obtained from forest biomass is a good source of vegetable oils, ... -
Experimental and discrete element simulation studies of bell-less charging of blast furnace
(Åbo Akademi - Åbo Akademi University, 15.03.2013)This thesis presents an experimental study and numerical study, based on the discrete element method (DEM), of bell-less charging in the blast furnace. The numerical models are based on the microscopic interaction between ... -
Extraction of polymeric galactoglucomannans from spruce wood by pressurized hot water
(Åbo Akademi - Åbo Akademi University, 23.08.2013)The major type of non-cellulosic polysaccharides (hemicelluloses) in softwoods, the partly acetylated galactoglucomannans (GGMs), which comprise about 15% of spruce wood, have attracted growing interest because of their ... -
Features of a Ziegler-Natta catalyst prepared with the Sirius emulsion-based catalyst production technology
(Åbo Akademi - Åbo Akademi University, 14.06.2013)- -
Fibre surface engineering using polysaccharide derivatives
(Åbo Akademi - Åbo Akademi University, 12.12.2017)In the search for new materials and innovative solutions, pulp fibres obtained from wood chips have gained attention during the last few decades because they can be converted into a wide variety of pulp-derived products. ... -
Flexible pigment-cellulose nanofibril composites for printed electronics applications
(VTT Technical Research Centre of Finland Ltd, 27.10.2017)The aim of this work was to expand the possibilities of novel use of cellulose micro- and nanofibrils (CMNF) for bio-based composites. The new approach in this work was to combine inorganic pigments and CMNF in a relatively ... -
Formic acid fractionation of bamboo and valorization of isolated lignin
(Åbo Akademi - Åbo Akademi University, 14.02.2020)Lignocellulosic biomass is the most abundant and renewable natural resource on earth. It has been regarded as an environmentally sustainable raw material to be converted into chemicals and biomaterials. To profitably use ... -
Fractionation of marine algae to its constituents towards valuable chemicals and energy products
(Åbo Akademi - Åbo Akademi University, 20.11.2017)There is an urgency for finding renewable resources for the replacement of fossil resources aiming at more environmentally friendly processing. The old concept of processing forestry biomass for pulp and paper that dominated ... -
Functional cellulose microspheres for pharmaceutical applications
(Åbo Akademi - Åbo Akademi University, 13.02.2015)Dissolving cellulose is the first main step in preparing novel cellulosicmaterials. Since cellulosic fibres cannot be easily dissolved in water-based solvents, fibres were pretreated with ethanol-acid solution prior to the ... -
Functionalisation of spruce O-acetyl-galactoglucomannans for barrier and composite applications
(Åbo Akademi - Åbo Akademi University, 23.10.2015)The increasing use of energy, food, and materials by the growing population in the world is leading to the situation where alternative solutions from renewable carbon resources are sought after. The growing use of plastics ... -
Functionalization of cellulosic fibers via adsorption of native and light-responsive polysaccharides
(Åbo Akademi - Åbo Akademi University, 17.01.2018)Pulp fibers are widely used in different types of everyday products. Even though the demand for newspaper and printing paper is declining, there is a clear growth in the consumption of such fiber-based products as specialty ...
