Selaus tekijän mukaan kokoelmassa 215 Teknillinen kemia
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A reaction engineering approach to homogeneously catalyzed glycerol hydrochlorination
de Araujo Filho, Cesar (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 ... -
A set of models for optimization of gas distribution networks : A study in Process and Systems Engineering
Mikolajková-Alifov, Markéta (Åbo Akademi - Åbo Akademi University, 14.06.2019)Natural gas is a fossil fuel with a high potential to become the bridging fuel in the transition towards a sustainable future because of its lower share of carbon compared to oil and coal. A growing popularity of LNG, ... -
Antibacterial surfaces produced by liquid flame spray deposition of silver nanoparticles
Brobbey, Kofi J. (Åbo Akademi - Åbo Akademi University, 24.05.2019)Healthcare associated infections (HAIs) are one of the major problems of modern healthcare. Pathogenic bacteria responsible for these HAIs are mostly transmitted via surfaces. Emphasis on preventive measures can cumulatively ... -
Aqueous-Phase Reforming of Renewable Polyols for Sustainable Hydrogen Production
Godina, Lidia I. (Åbo Akademi - Åbo Akademi University, 22.02.2019)Renewable biomass can be utilized for sustainable hydrogen production via aqueousphase reforming (APR), which implies catalytic conversion of aqueous solutions of alcohols and polyols over transition metals at comparably ... -
Aspects on Robust Control and Identification
Tötterman, Stefan (Åbo Akademi - Åbo Akademi University, 31.05.2019)This thesis treats different aspects on robust controller design and model identification techniques. The controller design technique proposes frequency-domain specifications for achieving a fixed-structure controller with ... -
Catalytic transformation of algae, tall-oil fatty acids and triglycerides to renewable fuels and chemicals
Hachemi, Imane (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. ... -
Chemistry of potassium halides and their role in corrosion in biomass and waste firing
Wu, Hao
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 ... -
Destruction of selected pharmaceuticals by ozonation and heterogeneous catalysis
Saeid, Soudabeh
Acta technologiae chemicae Aboensia : 2020 A/1 (Åbo Akademi - Åbo Akademi University, 16.03.2020)The availability and quality of clean and safe water supplies is directly connected to the modality of wastewater treatment. Municipal wastewater treatment processes are designed to purify and degrade polluting components ... -
Development of advanced oxidation processes for the Finnish pulp and paper industry water treatment
Jansson, Kaj (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 microreactor technology for partial oxidation of ethanol on gold catalyst
Behravesh, Erfan
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 structured catalyst and reactor technologies for biomass conversion - Continuous production of sugar alcohols
Najarnezhadmashhadi, Ali
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 ... -
Effects of Temperature Gradient on Ash Deposit Aging and Heat Exchanger Corrosion
Niemi, Jonne (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 ... -
Elemental analysis of wood materials by external millibeam thick target PIXE
Saarela, Kjell-Erik (Åbo Akademi - Åbo Akademi University, 13.11.2009) -
Engineering of novel cellulose-based biocomposites and biofoams
Obradovic, Jasmina (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 ... -
Epoxidation of light olefins on titanium silicates
Alvear Cabezón, Matias Ignacio
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
Freites Aguilera, Adriana
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 Numerical Analysis of Blast Furnace Drainage
Liu, Weiqiang (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
Wei, Han (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 ... -
Fibre surface engineering using polysaccharide derivatives
Vega, Beatriz (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
Zhang, Yongchao (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 ...