215 Teknillinen kemia, kemian prosessitekniikka
Uusimmat viitteet
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Antimicrobial Effects of Alcohol-Based Hand Sanitizers
(2023)Embargo 25.1.2027 asti -
Thermal degradation and stabilization of HVDC power cable insulation materials based on polypropylene
(2022)In this work, a series of antioxidant formulations’ effectiveness for propylene copolymers intended to be used as insulation materials for HVDC cables has been eval-uated by subjecting the polymer samples to forced-air ... -
Fluidized bed agglomeration inhibition by additives during combustion of demanding biomass fuels
(2022)Bed agglomeration is a problem related to fluidized bed combustion. It is a result of bed particles and/or fuel ash gluing together, forming agglomerates, i.e., large clusters. These agglomerates can, over time, increase ... -
Analysis method development for quantification of by-products formed in the production of 2-(dimethylamino)ethylacrylate
(2022)In the industrial-scale production of 2-(dimethylamino)ethylacrylate (DMAEA), some by-products are formed. These by-products can be formed via oxa-Michael addition and/or transesterification in the reaction medium. Most ... -
Novel experimental setup for coulometric signal transduction in ion-selective electrodes
(2022)In this research work, a simple and versatile novel experimental setup for coulometric signal transduction in ion-selective electrodes was introduced and studied. It is based on a constant potential coulometry measurement ... -
Characterization of different tannins for possible industrial resin production
(2022)Tannins are the fourth most abundant component in plant material after cellulose, hemicellulose, and lignin, and have received extensive attention due to their high content of phenolic and carboxyl groups. The earliest use ... -
Removal of calcium from industrial-grade magnesium sulfate solution
(2022)The aim of this work was to find a method to remove calcium impurities from a concentrated magnesium sulfate solution. Different methods were evaluated, including (i) selective precipitation using ethanol, sodium carbonate, ... -
Hydrogen reduction of iron oxides : Experimental study
(2022)Steel is one of the modern world’s core pillars in engineering and construction materials, but the steel production causes large carbon dioxide emissions. The steel industry needs to reduce its carbon emissions to prevent ... -
Tuning strategies for control of integrating systems with model predictive control
(2022)The objective of this thesis was to verify the suitability of Valmet’s own MPC solution, DNAMPC2, when applied to a common system encountered in process industry and biofuels processing. An extensive literature study was ... -
Carbon dioxide capture from humid exhaust air and flue gases
(2022)Carbon capture and storage (CCS), as well as utilisation of carbon dioxide (CO2), has become an increasingly important research area in order to achieve the goals set by the European Commission for the EU to become climate ...Salassapidettävä 16/6/2026 asti. -
Hydrofobering av handark med ASA – Inverkan av stabiliseringsmedel i olika mäldtyper
(2022)Genom hela papprets historia har modifiering av papprets egenskaper varit av intresse. Ett sätt att modifiera egenskaperna är genom användning av olika tillsatsämnen. Exempelvis genom att tillsätta hydrofoberingsmedel som ... -
Synthesis of sugar-based polymerizable materials for hydrogel preparation
(2022)To match the growing need for biodegradable, biocompatible and biobased materials, this thesis explored the possibilities of the synthesis of bio-based (photo)polymerizable materials from sugars and sugar alcohols and the ...Embargo 13.6.2023 asti -
Chemical addition to the wet web using foam application
(2022)Foam application is a promising new method for applying papermaking chemicals to wet paper webs. It is based on using aqueous foam as a carrier fluid and has simultaneously improved wet web runnability and furnish strength ... -
Utilization of waste heat sources to lower energy consumption at a paper mill
(2022)The environmental impact has become an important aspect to consider for companies. Energy efficiency is a significant part of the environmental impact that is continuously improved. New solutions are found to increase the ... -
Kartläggning och förbättringsförslag för en barrfiberlinjes bruntvätt
(2022)I diplomarbetet undersöks barrfiberlinjens bruntvättseffektivitet vid UPM Kymmene Oy:s cellulosafabrik i Jakobstad. I samband med effektivitetstestet har även enkla och linjära optimeringsmodeller konstruerats för att ge ... -
The effects of temperature treatments on the structure of an injectable depot material consisting of silica microparticles and a silica hydrogel
(2022)During transportation of injectable depot materials, temperature variations might occur as they are shipped globally in different climates. A systematic approach to study the effects of temperature variations was therefore ... -
Assessment of hydrolysis lignin as fuel for CHP plant
(2022)Hydrolysis lignin is a by-product of bioethanol production. In the hydrolysis step, lignin is separated from the raw material; wood or starch. There are enormous dumps of lignin residue in the former Soviet Union. The ...Secrecy until 22.3.2027 Sekretess t.o.m. 22.3.2027 Salassapidettävä 22.3.2027 asti -
Synthesis, characteristics, and antibacterial effects of biomaterials in nanoscale
(2022)In this thesis, lignin/tannin nanoparticles (LNP/TNP) from different sources and processes were synthesized by nanoprecipitation method using lignin/acetone (and tannin/acetone) as solvents, and distilled water was used ...Embargo 21.1.2023 asti -
Fractionation and Characterisation of Enzymatic Hydrolysis Lignin
(2022)Lignin is one of the major components in lignocellulosic biomass and the most abundant aromatic building block in nature. Technical lignins extracted from either pulping or biorefining processes provide a variety of complex ... -
A balance-based study of the combustion in blast furnace cowpers
(2021)This thesis focuses on modelling and simulation of different firing conditions in cowpers that are a part of a steelmaking process. The cowpers are regenerative heat exchangers that preheat the blast air into the blast ...
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