Search Results - "R. L. Keiski"

Crystallization fouling of CaCO3 – Analysis of experimental thermal resistance and its uncertainty by Pääkkönen, T.M., Riihimäki, M., Simonson, C.J., Muurinen, E., Keiski, R.L.

“…Crystallization fouling occurs when dissolved salts precipitate from an aqueous solution. In the case of inversely soluble salts, like calcium carbonate…”
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A Comparative Study on Activated Carbons Derived from a Broad Range of Agro-industrial Wastes in Removal of Large-Molecular-Size Organic Pollutants in Aqueous Phase by Cruz, G. J. F., Matějová, L., Pirilä, M., Ainassaari, K., Canepa, C. A., Solis, J., Cruz, J.F., Šolcová, O., Keiski, R. L.

“…Microporous–mesoporous activated carbons from five different types of agro-industrial wastes were produced using chemical activation with ZnCl 2 and…”
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Effect of Sulphur on the Activity of Pd/Al₂O₃, Pd/CeO₂ and Pd/ZrO₂ Diesel Exhaust Gas Catalysts by Kolli, T, Huuhtanen, M, Hallikainen, A, Kallinen, K, Keiski, R. L

“…Pd/Al₂O₃, Pd/CeO₂ and Pd/ZrO₂ diesel oxidation catalysts and their washcoat materials were studied after sulphur treatment. The catalytic activities were…”
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Adsorption of As(V), Cd(II) and Pb(II), in Multicomponent Aqueous Systems using Activated Carbons by Pirilä, M., Cruz, G.J.F., Ainassaari, K., Gomez, M.M., Matějová, L., Keiski, R.L.

“…This paper studies the use of two activated carbon samples made of cocoa pod husk (CPH-AC) and one commercial activated carbon sample in the adsorption of…”
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Concentration of blackcurrant juice by reverse osmosis by Pap, N., Kertész, Sz, Pongrácz, E., Myllykoski, L., Keiski, R.L., Vatai, Gy, László, Zs, Beszédes, S., Hodúr, C.

“…The aim of this study was to examine the applicability of reverse osmosis (RO) for the concentration of blackcurrant juice by AFC-80 polyamide tubular membrane…”
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Reactivation of sulphated Pt/Al2O3 catalysts by reductive treatment in the simultaneous oxidation of CO and C3H6 by Cabello Galisteo, F., Mariscal, R., López Granados, M., Zafra Poves, M.D., Fierro, J.L.G., Kröger, V., Keiski, R.L.

“…A Pt/Al2O3 catalyst prepared by incipient wetness impregnation was used as a diesel oxidation model catalyst and tested in the simultaneous total oxidation of…”
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Testing VOC emission measurement techniques in wood-coating industrial processes and developing a cost-effective measurement methodology by Ojala, S., Lassi, U., Keiski, R.L.

“…Availability of reliable emission measurements of concentrated volatile organic compounds (VOCs) bear great significance in facilitating the selection of a…”
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Effect of ageing atmosphere on the deactivation of Pd/Rh automotive exhaust gas catalysts: catalytic activity and XPS studies by Lassi, U, Polvinen, R, Suhonen, S, Kallinen, K, Savimäki, A, Härkönen, M, Valden, M, Keiski, R.L

“…In the present work, the catalytic activity and thermal stability of metallic Pd and Rh catalysts have been examined under different ageing atmospheres. It was…”
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Composites of ZnO nanoparticles and biomass based activated carbon: adsorption, photocatalytic and antibacterial capacities by Cruz, G J F, Gómez, M M, Solis, J L, Rimaycuna, J, Solis, R L, Cruz, J F, Rathnayake, B, Keiski, R L

“…Composite material (AC-ZnO) was prepared by growing ZnO nanoparticles during the production of biomass based-activated carbon (AC) via the incorporation of…”
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Environmental risk assessment of heavy metal extractability in a biosludge from the biological wastewater treatment plant of a pulp and paper mill by Pöykiö, R, Nurmesniemi, H, Keiski, R. L

“…A five-stage sequential extraction procedure was used to fractionate heavy metals (Cd, Cu, Pb, Cr, Zn, Fe, Mn, Ni, Co, As, V and Ba) in a biosludge from the…”
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Catalytic activation of CO2: Use of secondary CO2 for the production of synthesis gas and for methanol synthesis over copper-based zirconia-containing catalysts by RAUDASKOSKI, R, TURPEINEN, E, LENKKERI, R, PONGRACZ, E, KEISKI, R. L

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Sub-ppb detection of formaldehyde with cantilever enhanced photoacoustic spectroscopy using quantum cascade laser source by Hirschmann, C. B., Lehtinen, J., Uotila, J., Ojala, S., Keiski, R. L.

“…A novel cantilever enhanced photoacoustic spectrometer with mid-infrared quantum cascade laser was applied for selective and sensitive formaldehyde (CH 2 O)…”
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A statistical experimental design for the separation of zinc from aqueous solutions containing sodium chloride and n-butanol by Micellar-enhanced ultrafiltration by Kertész, Sz, Landaburu-Aguirre, J., García, V., Pongrácz, E., Hodúr, C., Keiski, R.L.

“…This paper reports the removal of zinc from aqueous solutions containing n-butanol and sodium chloride by micellar-enhanced ultrafi ltration using the anionic…”
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Trace gas detection of benzene, toluene, p-, m- and o-xylene with a compact measurement system using cantilever enhanced photoacoustic spectroscopy and optical parametric oscillator by Hirschmann, C.B., Sinisalo, S., Uotila, J., Ojala, S., Keiski, R.L.

“…A compact measurement system based on a novel combination of cantilever enhanced photoacoustic spectroscopy (CEPAS) and optical parametric oscillator (OPO) was…”
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Catalyst preparation through ion-exchange of zeolite Cu-, Ni-, Pd-, CuNi- and CuPd-ZSM-5 by Öhman, L.O., Ganemi, B., Björnbom, E., Rahkamaa, K., Keiski, R.L., Paul, J.

“…Ion-exchanged zeolite ZSM-5 is the best known catalyst for direct NO x decomposition and a viable candidate for NO x reduction with methane. The preparation is…”
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In situ FTIR study on NO reduction by C3H6 over Pd-based catalysts by Huuhtanen, M., Kolli, T., Maunula, T., Keiski, R.L.

“…The reaction mechanism of the reduction of NO by propene over Pd-based catalysts was studied by FTIR spectroscopy. It was observed that the reaction between NO…”
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Thermodynamic analysis of conversion of alternative hydrocarbon-based feedstocks to hydrogen by Turpeinen, E., Raudaskoski, R., Pongrácz, E., Keiski, R.L.

“…Due to the declining fossil fuel stocks and a consistent problem of the carbon dioxide emissions, new energy sources are needed in future. Among the many…”
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The Impact of Sulphur, Phosphorus and their Co-effect on Pt/SiO2–ZrO2 Diesel Oxidation Catalysts by Väliheikki, A., Kolli, T., Honkanen, M., Heikkinen, O., Kärkkäinen, M., Kallinen, K., Huuhtanen, M., Vippola, M., Lahtinen, J., Keiski, R. L.

“…The effect of sulphur and phosphorus on a Pt/SiO 2 –ZrO 2 catalyst was studied. The laboratory accelerated sulphur (SW) or phosphorus (PW), and their…”
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Oxidative steam reforming of ethanol over Ru-Al2O3 catalyst in a dense Pd-Ag membrane reactor to produce hydrogen for PEM fuel cells by IULIANELLI, A, LONGO, T, LIGUORI, S, SEELAM, P. K, KEISKI, R. L, BASILE, A

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Erratum to: A Comparative Study on Activated Carbons Derived from a Broad Range of Agro-industrial Wastes in Removal of Large-Molecular-Size Organic Pollutants in Aqueous Phase by Cruz, G. J. F., Matějová, L., Pirilä, M., Ainassaari, K., Canepa, C. A., Solis, J., Cruz, J. F., Šolcová, O., Keiski, R. L.

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