Viitteet 1-10 / 17
Numerical and experimental optimization analysis of a jaw crusher and a bubble column reactor
(Åbo Akademi University, 2019-05-29)
More and more awareness is now raising in terms of sustainability of industrial processes. Thus the necessity to improve energy efficiency of diverse devices or simplify process schemes arises. Therefore, the importance ...
A set of models for optimization of gas distribution networks : A study in Process and Systems Engineering
(Åbo Akademi University, 2019-06-14)
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, ...
Initial Stages of Alkali Salt Induced High Temperature Corrosion Mechanisms : Experimental studies using a combination of chronoamperometry, scanning electron microscopy, X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry
(Åbo Akademi University, 2019-05-24)
Various environmental problems, such as global warming, are related to the extensive use of fossil fuels. To solve these environmental problems, several renewable energy resources (RES) to substitute fossil fuels have drawn ...
Membrane Separations, Extractions and Precipitations in Aqueous Solutions for CO2 Mineralisation
(Åbo Akademi University, 2019-10-11)
The global carbon dioxide (CO2) emissions have been growing rapidly since the industrial revolution starting in the 18th century. This has led to increasing CO2 concentrations in the atmosphere, which in turn heats up the ...
Aspects on Robust Control and Identification
(Åbo Akademi University, 2019-05-31)
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 ...
Effects of Temperature Gradient on Ash Deposit Aging and Heat Exchanger Corrosion
(Åbo Akademi University, 2019-11-22)
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 ...
The role and corrosivity of lead in recycled wood combustion
(Åbo Akademi University, 2019-08-30)
Catalytic transformation of algae, tall-oil fatty acids and triglycerides to renewable fuels and chemicals
(Åbo Akademi University, 2018-06-18)
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. ...
Supramolecular design of cellulose-based hydrogel beads
(Åbo Akademi University, 2019-03-08)
The degree of polymerization (DP) of cellulose fibres is an important factor to consider during dissolution in water-based solvent system and to design further advanced biomaterials. The lower is the DP, the higher cellulose ...
Aqueous-Phase Reforming of Renewable Polyols for Sustainable Hydrogen Production
(Åbo Akademi University, 2019-02-22)
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 ...