Selaus nimekkeen mukaan kokoelmassa 215 Teknillinen kemia
Viitteet 28-47 / 127
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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 ... -
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 light olefins on titanium silicates
Acta technologiae chemicae Aboensia : 2023 A/3 (Åbo Akademi - Åbo Akademi University, 06.10.2023)The topic of present work was the epoxidation of light olefins on titanium silicate catalysts. Epoxidation of single olefins (ethene, propene, 1-butene and iso-butene) and mixtures of them were investigated. A material ... -
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 ... -
Experimental and Numerical Analysis of Blast Furnace Drainage
(Åbo Akademi - Åbo Akademi University, 18.03.2022)The thesis studies slag and iron flow in the blast furnace hearth and the complex hearth drainage phenomena by both experiments and numerical simulation. It also presents a mathematical model by which the asymptotic state ... -
Experimental and Numerical Studies of Burden Layers at Blast Furnace Charging
(Åbo Akademi - Åbo Akademi University, 21.10.2022)The blast furnace (BF) is the main production unit in the processing of iron ore to molten iron (“hot metal”) in the steelmaking industry. It is a large process with huge throughput and energy consumption, so even a slight ... -
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. ... -
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 ... -
Green aviation fuel hydrocarbons from lignocellulosic biomass via hydrothermal liquefaction
Acta technologiae chemicae Aboensia :2021 A/1 (Åbo Akademi University, 21.05.2021)Hydrothermal liquefaction (HTL) of lignocellulosic biomass in primary alcohols is a novel thermochemical method to produce sustainable aviation fuel range cyclic hydrocarbons. In this method, particularly the underutilized ... -
Heterogeneous catalytic copolymerization reactions of carbon dioxide and propylene oxide over polyalcohols under subcritical conditions
(Åbo Akademi University and Universidad de Valladolid, Spain, 15.03.2017)Carbon dioxide (CO2) is one of the main gases which cause the greenhouse effect. As a way to attenuate this damage, CO2 could be used as a building block for copolymerization reactions; precisely as C1 feedstock (monomer ...