Selaus nimekkeen mukaan kokoelmassa 2 Tekniikka
Viitteet 26-45 / 159
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Development of advanced oxidation processes for the Finnish pulp and paper industry water treatment
(Åbo Akademis förlag - Åbo Akademi University Press, 04.11.2022)Advanced oxidation processes (AOP) have been developed as a pinnacle of chemical water treatment to face the more tightening environmental limits during the last three decades. Whenever either pure coagulation & flocculation ... -
Development of an environmentally friendly method of starch oxidation by hydrogen peroxide and a complex water-soluble Iron catalyst
(Åbo Akademi - Åbo Akademi University, 01.02.2013)Oxidized starch is a key component in the paper industry, where it is used as both surfacing sizer and filler. Large quantities are annually used for this purpose; however, the methods for the oxidation are not environmentally ... -
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) -
Development of structured catalyst and reactor technologies for biomass conversion - Continuous production of sugar alcohols
Acta technologiae chemicae Aboensia : 2021 A/2 (Åbo Akademi University, 19.05.2021)Energy-efficient technologies have been an aspiration for chemical industries, especially the design of chemical reactors. Structured catalysts play an important role to achieve this purpose. Several types of structured ... -
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 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. ...