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Analysis of cyanide in mining waters
(2018)
Cyanide, as a chemical compound, can be found in the effluents of numerous industries, particularly mining. The toxicity and concentration control of cyanide during gold and silver extractions necessitate the precise ...
Environmentally harmful substances in wastewater of Rauma forest industry area
(2018)
Because of the demands set by the environmental authorities and the legislation, the study of environmentally harmful and hazardous substances was carried out in the Rauma forest industry area and in the biological wastewater ...
Polyakryyliamidi-flokkulanttien vaikutus koboltin neste-nesteuuttoon käytettäessä bis(2,4,4-trimetyylipentyyli)fosfiinihappoa
(2018)
Tämän diplomityön tarkoituksena oli tutkia kuinka nikkelin hydrometallurgisessa tuotantoprosessissa flokkulantteina käytettävien polyakryyliamidiyhdisteiden aiheuttamat vuorovaikutukset vaikuttivat koboltin uuttoon väkevästä ...
Recycling of cellulose-dissolving ionic liquids
(2018)
Production of wood-based cellulosic textile fibres is currently under intensive research. One of the most promising techniques to produce such fibres is the direct dissolution of cellulose by ionic liquid solvents. A crucial ...
Removal of lignin from tall oil pitch
(2018)
The aim of this thesis was to separate lignin from tall oil pitch (TOP). As an introduction, composition and origin of TOP and lignin in TOP are shortly presented. Possible separation methods were screened for lignin removal ...
Effect of liquid-liquid phase separation during crystallization
(2018)
The purpose of this work is to study oiling out phenomenon and to develop a design method for crystallization process, which can be used to identify oiling out during synthesis. Oiling out is a phenomenon where a second ...
Protection of C5-sugars in oxidation process development
(2018)
This study focuses on oxidation reaction of lactose selectively to galarose, which is lower sugar. Boric acid was used in the reaction as catalyst for lactose and protective group for galarose, and ultrasound was used to ...
Märänpään hallinnan kehittäminen kartongin laadun parantamiseksi
(2018)
Kolmikerroksisella elintarvikepakkauskartongilla on korkeat laatuvaatimukset, joiden saavuttamiseksi tulee kriittisten prosessivaiheiden mittausten olla luotettavia ja tarkkoja. Erityisen tärkeässä roolissa ovat sakeusmittaukset, ...
Defining surface chemical and rheological properties of resins for curtain coating
(2018)
Phenol-formaldehyde resins are used as a raw material for plywood adhesives. Bio-based lignin can be used as a partial replacement to toxic and petroleum-based phenol. Plywood gluing can be performed for example by curtain ...
Methanol synthesis from CO2 and H2 by reactive distillation
(2018)
The widely use of fossil fuel generates large amount of CO2, which causes greenhouse effect. Since fossil fuel is nonrenewable, a potential energy crisis is no doubt coming. Thus, the reuse of CO2 has generated a lot of ...