Selaus syöttöajan mukaan kokoelmasssa 215 Teknillinen kemia
Viitteet 21-40 / 107
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Catalytic transformation of algae, tall-oil fatty acids and triglycerides to renewable fuels and chemicals
(Åbo Akademi - Åbo Akademi University, 18.06.2018)It has become increasingly obvious that sustainable energy is becoming more engaging owing to the eventual depletion of the world reserves of fossil resources of energy and to the increase of the greenhouse gas emissions. ... -
Wood extractives in conifers : a study of stemwood and knots of industrially important species
(Åbo Akademis förlag - Åbo Akademi University Press, 23.02.2018)Throughout the years, extractives have been studied with various analytical methods, and it has been found that different tree species contain different types and amounts of extractive compounds. However, many studies have ... -
Roll-to-roll processing of nanocellulose into coatings
(Åbo Akademi - Åbo Akademi University, 15.02.2018)Paper and paperboard consumption is growing worldwide. However, the demand for traditional graphic paper grades is dwindling in mature markets, e.g. Europe, due to an increasing influence of the electronic media. For a ... -
Hydrotropic process for green biorefinery applications
(Åbo Akademi - Åbo Akademi University, 19.01.2018)Biorefinery is a concept of sustainable biomass processing into several useful products, such as fuels, materials, power and chemicals. The necessity of more extensive biomass utilization is governed nowadays by the ... -
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 ... -
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 ... -
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. ... -
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 ... -
Reactor Modelling for Fluid-Solid Systems
(Åbo Akademi - Åbo Akademi University, 13.10.2017)Reactor Modelling for Fluid-Solid Systems The aim of the present doctoral thesis is the development of reliable mathematical models for the simulation of fluid-solid reactors. The main idea was to elaborate a rigorous ... -
Hybridization of pulp fibres with LDH for applications in composites and lightweight fibrous foam
(Åbo Akademi - Åbo Akademi University, 11.08.2017)The research around the pulp and paper (P&P) sector has changed dramatically during the past 15 years. P&P industry is particularly keen to find new solutions for the raw-materials they provide as well as explore novel ... -
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 ... -
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 ... -
Input designs for identification of Ill-conditioned multivariable systems
(Åbo Akademi - Åbo Akademi University, 28.10.2016)Identification of an industrial system is generally a costly and complex process. Making an identification procedure efficient enough is an ongoing demand. Typically, designing the excitation for ill-conditioned and ... -
Wood-derived biomaterials for biomedical applications
(Åbo Akademi - Åbo Akademi University, 16.09.2016)Driven by the global trend in the sustainable economy development and environmental concerns, the exploring of plant-derived biomaterials or biocomposites for potential biomedical and/or pharmaceutical applications has ... -
Modeling of burden distribution in the blast furnace
(Åbo Akademi - Åbo Akademi University, 27.06.2016)The blast furnace is the main ironmaking production unit in the world which converts iron ore with coke and hot blast into liquid iron, hot metal, which is used for steelmaking. The furnace acts as a counter-current reactor ... -
Chemistry of potassium halides and their role in corrosion in biomass and waste firing
Åbo Akademi, Faculty of Science and Engineering, Johan Gadolin Process Chemistry Centre : 16-02 (Åbo Akademi - Åbo Akademi University, 17.06.2016)Compared to the use of traditional fossil fuels (coal, oil, natural gas), combustion of biomass and waste fuels has several environmental and economic advantages for heat and power generation. However, biomass and waste ... -
New biomass derived carbon catalysts for biomass valorization
(Åbo Akademi - Åbo Akademi University, 17.06.2016)Due to diminishing petroleum reserves, unsteady market situation and the environmental concerns associated with utilization of fossil resources, the utilization of renewables for production of energy and chemicals (biorefining) ... -
Optimization of a steel plant utilizing converted biomass
(Åbo Akademi - Åbo Akademi University, 10.06.2016) -
A reaction engineering approach to homogeneously catalyzed glycerol hydrochlorination
(Åbo Akademi - Åbo Akademi University, 20.05.2016)The production of biodiesel through transesterification has created a surplus of glycerol on the international market. In few years, glycerol has become an inexpensive and abundant raw material, subject to numerous plausible ... -
Synthesis and characterization of nanoperforated metal oxide thin films
(Åbo Akademi - Åbo Akademi University, 04.03.2016)For advanced devices in the application fields of data storage, solar cell and biosensing, one of the major challenges to achieve high efficiency is the fabrication of nanopatterned metal oxide surfaces. Such surfaces often ...
