Kajaani University of Applied Sciences

www.kamk.fi
Kajaani, Finland

Kajaani University of Applied science is a small university of applied science located in the town of Kajaani. There are approximately 2000 students and 230 members of staff at KUAS. Kajaani University of Applied science has achieved success nationally in Ministry of Education and Culture outcome barometers where the quality of teaching and counseling has been considered the best in Finland for several years running. Based on a survey published in Talouselämä -newspaper in 2011, KUAS was ranked as Finland's best university of applied science. KUAS' quality management system was among the first to be audited and approved in 2007. On Kajaani University of Applied science' integrated campus area all student services are close to each other. The campus, located just a short walk away from the town centre, is surrounded by nature and different kinds of sports facilities.The operations and organizational structure of KUAS are based on five areas of competence. Activity Tourism Information Systems Nursing and Healthcare Mechanical and Mining Engineering Business and InnovationsKajaani University of Applied science offers 8 Bachelor's degree programmes and 5 Master programmes delivered in Finnish in these competence areas. In addition, KUAS offers two degree programmes delivered in English: Degree Programme in International Business Degree Programme in Sports and Leisure Management The extent of studies in a university of applied science is 210 - 240 credits , which means 3,5 – 4 years of studies. An essential part of studies is practical training worth 30 credits , designed to provide students with the opportunity to put theory into practice. Internationality is emphasized in all education offered at Kajaani University of Applied science. It is possible to complete part of the studies and the practical training also abroad using the worldwide network of partners. Kajaani UAS also offer double degree programmes, giving the students an opportunity to finish their studies with two bachelor's degrees. Wikipedia.


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Luukkonen T.,Kajaani University of Applied Sciences | Luukkonen T.,University of Oulu | Pehkonen S.O.,University of Eastern Finland
Critical Reviews in Environmental Science and Technology | Year: 2017

Peracids have gained interest in the water treatment over the last few decades. Peracetic acid (CH3CO3H) has already become an accepted alternative disinfectant in wastewater disinfection whereas performic acid (CHO3H) has been studied much less, although it is also already commercially available. Additionally, peracids have been studied for drinking water disinfection, oxidation of aqueous (micro)pollutants, sludge treatment, and ballast water treatment, to name just a few examples. The purpose of this review paper is to represent comprehensive up-to-date information about the water treatment applications, aqueous reaction mechanisms, and disinfection by-product formation of peracids, namely performic, peracetic, and perpropionic acids. © 2017 Taylor & Francis Group, LLC


Luukkonen T.,University of Oulu | Luukkonen T.,Kajaani University of Applied Sciences | Heyninck T.,Plantijn College | Ramo J.,University of Oulu | And 2 more authors.
Water Research | Year: 2015

The use of organic peracids in wastewater treatment is attracting increasing interest. The common beneficial features of peracids are effective anti-microbial properties, lack of harmful disinfection by-products and high oxidation power. In this study performic (PFA), peracetic (PAA) and perpropionic acids (PPA) were synthesized and compared in laboratory batch experiments for the inactivation of Escherichia coli and enterococci in tertiary wastewater, oxidation of bisphenol-A and for corrosive properties. Disinfection tests revealed PFA to be a more potent disinfectant than PAA or PPA. 1.5 mg L-1 dose and 2 min of contact time already resulted in 3.0 log E. coli and 1.2 log enterococci reduction. Operational costs of disinfection were estimated to be 0.0114, 0.0261 and 0.0207 €/m3 for PFA, PAA and PPA, respectively. Disinfection followed the first order kinetics (Hom model or S-model) with all studied peracids. However, in the bisphenol-A oxidation experiments involving Fenton-like conditions (pH = 3.5, Fe2+ or Cu2+ = 0.4 mM) peracids brought no additional improvement to traditionally used and lower cost hydrogen peroxide. Corrosion measurements showed peracids to cause only a negligible corrosion rate (<6 μm year-1) on stainless steel 316L while corrosion rates on the carbon steel sample were significantly higher (<500 μm year-1). © 2015 Elsevier Ltd.


PubMed | University of Oulu, University of Jyväskylä and Kajaani University of Applied Sciences
Type: | Journal: Journal of hazardous materials | Year: 2016

Blast-furnace slag and metakaolin were geopolymerised, modified with barium or treated with a combination of these methods in order to obtain an efficient SO4(2-) sorbent for mine water treatment. Of prepared materials, barium-modified blast-furnace slag geopolymer (Ba-BFS-GP) exhibited the highest SO4(2-) maximum sorption capacity (up to 119mgg(-1)) and it compared also favourably to materials reported in the literature. Therefore, Ba-BFS-GP was selected for further studies and the factors affecting to the sorption efficiency were assessed. Several isotherms were applied to describe the experimental results of Ba-BFS-GP and the Sips model showed the best fit. Kinetic studies showed that the sorption process follows the pseudo-second-order kinetics. In the dynamic removal experiments with columns, total SO4(2-) removal was observed initially when treating mine effluent. The novel modification method of geopolymer material proved to be technically suitable in achieving extremely low concentrations of SO4(2-) (<2mgL(-1)) in mine effluents.


Sarkkinen M.,Kajaani University of Applied Sciences | Kujala K.,University of Oulu | Kemppainen K.,Kajaani University of Applied Sciences | Gehor S.,University of Oulu
Road Materials and Pavement Design | Year: 2016

The purpose of the research was to study the usability of two biomass fly ashes as road stabilisation binders. Partial least square structural equation modelling was used as an analytical method. The analysis was based on chemical composition data on SiO2, Fe2O3, Al2O3 and CaO in binder component, compressive strength results (7d and 28d), water to binder ratio, biomass fly ash content in binder, density of the stabilised material and binder to soil ratio as reflective indicators. According to the study, the higher relative biomass fly ash content had a positive relationship with total binder characteristics but indicated reduced strength properties in the stabilised materials. Also SiO2, Fe2O3, Al2O3 and CaO in binder component and binder to soil ratio had a positive effect on strength properties. However, the effect of biomass fly ash content on water demand, and the relationship between water content and strength were not statistically significant in the model. © 2016 Informa UK Limited, trading as Taylor & Francis Group


Sarkkinen M.,Kajaani University of Applied Sciences | Luukkonen T.,Kajaani University of Applied Sciences | Kemppainen K.,Kajaani University of Applied Sciences
Wastes: Solutions, Treatments and Opportunities - Selected Papers from the 3rd Edition of the International Conference on Wastes: Solutions, Treatments and Opportunities, 2015 | Year: 2015

The economic and ecological utilization of biomass based fly ashes (bioashes) generated in energy production is a growing problem. In addition, waste rock forms the highest amount of unused waste material. On the other hand, the structural load bearing capacities of roads increasingly require repair and strengthening partly due to the negative effects of climate change. This study investigates the use of a bioash and waste rock mixture as a stabilization material in road construction. The experimental phase compares the effects of different additives with bioash. The characteristics of the materials and mixtures are studied using X-ray fluorescence (XRF), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). In addition, unconfined compressive strength, optimum moisture content and freeze-thaw resistance are studied. The results show that bioash and dolomite based waste rock react together, forming a strong and durable material suitable, for example, for base course stabilization. © 2015 Taylor & Francis Group, London.


Ruotsalainen K.,University of Oulu | Rantaharju T.,University of Oulu | Partanen A.,Kajaani University of Applied Sciences | Romppainen P.,University of Oulu
IEEE Instrumentation and Measurement Magazine | Year: 2013

Several occupational groups are exposed to substantial amounts of vibration daily due to normal working routines, like operating heavy equipment or driving vehicles on uneven surfaces. Vibration that affects the whole human body and is transferred to the body through supporting systems such as the seat or floor is defined as whole-body vibration (WBV). Studies have shown that longterm exposure to WBV creates adverse health effects, of which lower back pain is the most common. Such symptoms may affect a person's quality of life or even cause incapacitation. Even though a correlation between health problems and long-term WBV exposure is evident, mechanisms behind the symptoms have remained unexplained. This paper presents a novel approach to the continuous observation of WBV in heavy machinery. The key elements of the approach are the incorporation of a measurement system into heavy machinery, enhanced comfort, ease of use, and cost-effectiveness. Small alternative sensor devices that improve comfort with respect to the standardized method were investigated in wired and wireless form. Wireless data transmission was then utilized to provide effortless and cost-effective data acquisition from the machinery to the remote server. The system was able to execute the calculations, transfer the resulting parameters to a remote server where information about predominant vibration conditions could be accessed instantaneously, and acquire and store raw acceleration data for further research. © 1998-2012 IEEE.


PubMed | Kajaani University of Applied Sciences
Type: Journal Article | Journal: International journal of older people nursing | Year: 2013

Previous studies have shown that dance can bring out the strength and resources of persons with dementia.To describe for later evaluation how older persons with dementia experience dance performances in a nursing home.Four dance performances, based on the recollections the older persons had of different seasons, were arranged in one nursing home.Qualitative descriptive study, with 13 older persons with dementia, four family members, seven nurses and three practical nurse students. Data were collected and analysed using methodological triangulation.Older persons identified dance performance activity as a process. They had a positive attitude towards the dance performance and performers, and they had experiences of different elements of the dance performance. The older persons forgot their ailments during the performances, and the performances evoked various emotions and awoke memories. Some of them had negative experiences of dancing and dance performances. The older persons experienced a common bond with other spectators.Watching a dance performance is an active process for older persons with dementia.Reminiscence about the dance performance gives the older person an opportunity to deal with the experiences evoked by the performance.


PubMed | Kajaani University of Applied Sciences and University of Oulu
Type: | Journal: Journal of environmental management | Year: 2015

The mining industry is a major contributor of various toxic metals and metalloids to the aquatic environment. Efficient and economical water treatment methods are therefore of paramount importance. The application of natural or low-cost sorbents has attracted a great deal of interest due to the simplicity of its process and its potential effectiveness. Geopolymers represent an emerging group of sorbents. In this study, blast-furnace-slag and metakaolin geopolymers and their raw materials were tested for simultaneous removal of Ni(II), As(III) and Sb(III) from spiked mine effluent. Blast-furnace-slag geopolymer proved to be the most efficient of the studied materials: the experimental maximum sorption capacities for Ni, As and, Sb were 3.74mg/g, 0.52mg/g, and 0.34mg/g, respectively. Although the capacities were relatively low due to the difficult water matrix, 90-100% removal of Ni, As, and Sb was achieved when the dose of sorbent was increased appropriately. Removal kinetics fitted well with the pseudo-second-order model. Our results indicate that geopolymer technology could offer a simple and effective way to turn blast-furnace slag to an effective sorbent with a specific utilization prospect in the mining industry.


PubMed | Kajaani University of Applied Sciences and University of Oulu
Type: | Journal: Journal of environmental management | Year: 2016

The aim of this research was to investigate sulphate removal from mine water by precipitation as ettringite (Ca6Al2(SO4)3(OH)1226H2O) and the utilisation of the precipitate as a sorbent for arsenate removal. The mine water sulphate concentration was reduced by 85-90% from the initial 1400mg/L during ettringite precipitation depending on the treatment method. The precipitation conditions were also simulated with MINEQL+software, and the computational results were compared with the experimental results. The precipitated solids were characterised with X-ray diffraction and a scanning electron microscope. The precipitated solids were tested as sorbents for arsenate removal from the model solution. The arsenic(V) model solution concentration reduced 86-96% from the initial 1.5mg/L with a 1g/L sorbent dosage. The effect of initial arsenate concentration on the sorption of arsenate on the precipitate was studied and Langmuir, Freundlich, and Langmuir-Freundlich sorption isotherm models were fitted to the experimental data. The maximum arsenate sorption capacity (qm=11.24.7mg/g) of the precipitate was obtained from the Langmuir-Freundlich isotherm. The results indicate that the precipitate produced during sulphate removal from mine water by precipitation as ettringite could be further used as a sorbent for arsenate removal.


PubMed | Kajaani University of Applied Sciences, University of Oulu and Plantijn College
Type: | Journal: Water research | Year: 2015

The use of organic peracids in wastewater treatment is attracting increasing interest. The common beneficial features of peracids are effective anti-microbial properties, lack of harmful disinfection by-products and high oxidation power. In this study performic (PFA), peracetic (PAA) and perpropionic acids (PPA) were synthesized and compared in laboratory batch experiments for the inactivation of Escherichia coli and enterococci in tertiary wastewater, oxidation of bisphenol-A and for corrosive properties. Disinfection tests revealed PFA to be a more potent disinfectant than PAA or PPA. 1.5 mg L(-1) dose and 2 min of contact time already resulted in 3.0 log E. coli and 1.2 log enterococci reduction. Operational costs of disinfection were estimated to be 0.0114, 0.0261 and 0.0207 /m(3) for PFA, PAA and PPA, respectively. Disinfection followed the first order kinetics (Hom model or S-model) with all studied peracids. However, in the bisphenol-A oxidation experiments involving Fenton-like conditions (pH = 3.5, Fe(2+) or Cu(2+) = 0.4 mM) peracids brought no additional improvement to traditionally used and lower cost hydrogen peroxide. Corrosion measurements showed peracids to cause only a negligible corrosion rate (<6 m year(-1)) on stainless steel 316L while corrosion rates on the carbon steel sample were significantly higher (<500 m year(-1)).

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