Foto av Risto Koivula
  • PL 55 (A. I. Virtasen aukio 1)

    00014

    Finland

19972022

Research output per year

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Publikationer

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2020
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2019

Arsenic (III) removal from water by hydroxyapatite-bentonite clay-nanocrystalline cellulose

Hokkanen, S., Doshi, B., Srivastava, V., Puro, L. & Koivula, R., 2019, I : Environmental progress & sustainable energy. 38, 5, 11 s., 13147.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Electrospun sodium titanate fibres for fast and selective water purification

Santala, E., Koivula, R., Harjula, R. & Ritala, M., 6 dec 2019, I : Environmental Technology. 40, 27, s. 3561-3567 7 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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Novel electroblowing synthesis of submicron zirconium dioxide fibers: effect of fiber structure on antimony(v) adsorption

Paajanen, J., Lönnrot, S., Heikkilä, M., Meinander, K., Kemell, M., Hatanpää, T., Ainassaari, K., Ritala, M. & Koivula, R., 1 nov 2019, I : Nanoscale Advances. 1, 11, s. 4373-4383 11 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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Selective extraction of aliphatic amines by functionalized mesoporous silica-coated solid phase microextraction Arrow

Lan, H., Zhang, W., Smått, J-H., Koivula, R., Hartonen, K. & Riekkola, M-L., jul 2019, I : Microchimica Acta. 186, 7, 11 s., 412.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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Selective ion-exchange separation of scandium(III) over iron(III) by crystalline alpha-zirconium phosphate platelets under acidic conditions

Avdibegović, D., Zhang, W., Xu, J., Regadío, M., Koivula, R. & Binnemans, K., 15 maj 2019, I : Separation and Purification Technology. 215, s. 81-90 10 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Solid-State Conversion of Scandium Phosphate into Scandium Oxide with Sodium Compounds

Yagmurlu, B., Zhang, W., Heikkilä, M., Koivula, R. & Friedrich, B., 14 aug 2019, I : Industrial & Engineering Chemistry Research. 58, 32, s. 14609-14620 12 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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2018

Intralanthanide Separation on Layered Titanium(IV) Organophosphate Materials via a Selective Transmetalation Process

Zhang, W., Hietala, S., Khryashchev, L., Hatanpää, T., Doshi, B. & Koivula, R., 4 jul 2018, I : ACS Applied Materials & Interfaces. 10, 26, s. 22083-22093 11 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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Modification of alpha-Zirconium Phosphate Synthesis - Effects of Crystallinity and Acidity on Eu(III) and Am(III) Ion Exchange

Wiikinkoski, E. W., Xu, J., Zhang, W., Hietala, S. & Koivula, R. T., 7 sep 2018, I : ChemistrySelect. 3, 33, s. 9583-9588 6 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Polyacrylonitrile-encapsulated amorphous zirconium phosphate composite adsorbent for Co, Nd and Dy separations

Xu, J., Virolainen, S., Zhang, W., Kuva, J., Sainio, T. & Koivula, R., 1 nov 2018, I : Chemical Engineering Journal. 351, s. 832-840 9 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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Separation of cobalt, neodymium and dysprosium using amorphous zirconium phosphate

Xu, J., Koivula, R. T., Zhang, W., Wiikinkoski, E. W., Hietala, S. & Harjula, R. O., jan 2018, I : Hydrometallurgy. 175, s. 170-178 9 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

2017

Effects of synthesis conditions on ion exchange properties of α-zirconium phosphate for Eu and Am

Wiikinkoski, E. W., Harjula, R. O., Lehto, J. K., Kemell, M. L. & Koivula, R. T., dec 2017, I : Radiochimica Acta. 105, 12, s. 1033–1042 10 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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Efficient and Selective Recovery of Trace Scandium by Inorganic Titanium Phosphate Ion-Exchangers from Leachates of Waste Bauxite Residue

Zhang, W., Koivula, R., Wiikinkoski, E., Xu, J., Hietala, S., Lehto, J. & Harjula, R., 20 feb 2017, I : ACS Sustainable Chemistry & Engineering. 5, 4, s. 3103-3114 12 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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HF-Free Synthesis of α-Zirconium Phosphate and Its Use as Ion Exchanger for Separation of Nd(III) and Dy(III) from a Ternary Co–Nd–Dy System

Xu, J., Wiikinkoski, E. W., Koivula, R. T., Zhang, W., Ebin, B. & Harjula, R. O., 2017, I : Journal of Sustainable Metallurgy . 3, 3, s. 646-658 13 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Titanium Alkylphosphate Functionalised Mesoporous Silica for Enhanced Uptake of Rare-Earth Ions

Zhang, W., Avdibegovic, D., Koivula, R., Hatanpää, T., Hietala, S., Regadio, M., Binnemans, K. & Harjula, R., 7 dec 2017, I : Journal of Materials Chemistry. A. 5, 45, s. 23805-23814 10 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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2016

Removal of cobalt from aqueous solution containing EDTA under UV-C irradiation by antimony oxide

Malinen, L., Koivula, R. & Harjula, R., jun 2016, I : Radiochimica Acta. 104, 6, s. 415-422 8 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

2014

Polymer-Inorganic Coatings Containing Nanosized Sorbents Selective to Radionuclides. 2. Latex/Tin Oxide Composites for Cobalt Fixation

Bratskaya, S., Mironenko, A., Koivula, R., Synytska, A., Musyanovych, A., Simon, F., Marinin, D., Goebel, M., Harjula, R. & Avramenko, V., 2014, I : ACS Applied Materials & Interfaces. 6, 24, s. 22387-22392 6 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Removal of Ni-63 and Co-57 from aqueous solution using antimony doped tin dioxide-polyacrylonitrile (Sb doped SnO2-PAN) composite ion-exchangers

Inan, S., Koivula, R. & Harjula, R., jan 2014, I : Journal of Radioanalytical and Nuclear Chemistry. 299, 1, s. 901-908 8 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

2013

Effect of EDTA and some other interfering species on the adsorption of Co(II) by EDTA-modified chitosan

Repo, E., Koivula, R., Harjula, R. & Sillanpää, M., 15 jul 2013, I : Desalination. 321, s. 93-102 10 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

2012

Ion exchange properties of sulfonated polycarbonate and polyimide track etch membranes

Koivula, R., Makkonen-Craig, S. A., Harjula, R. & Paronen, M., 2012, I : Reactive & Functional Polymers. 72, 1, s. 92-97 6 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Separation of Europium from Cobalt Using Antimony Silicates in Sulfate Acidic Media

Borai, E., Attallah, M., Harjula, R., Koivula, R. & Paajanen, A., 17 jan 2012, I : Mineral Processing and Extractive Metallurgy Review. 33, 3, s. 204-219 16 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

2011

Capture of Co(II) from its aqueous EDTA-chelate by DTPA-modified silica gel and chitosan.

Repo, E., Malinen, L., Koivula, R., Harjula, R. & Sillanpää, M., 2011, I : Journal of Hazardous Materials. 187, 1-3, s. 122-132 11 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Selective Removal of Cesium Using Zirconium(IV) Tungstate as an Inorganic Ion Exchanger from Aqueous Solution

Attallah, M. F., Borai, E. E., Harjula, R., Paajanen, A. A., Karesoja, M. & Koivula, R., 25 nov 2011, I : Journal of Materials Science and Engineering B . 1, 6B, s. 736-746

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Selective Sorption of Technetium on Antimony-Doped Tin Dioxide.

Koivula, R. & Harjula, R., 2011, I : Separation Science and Technology. 46, 2, s. 315-320 6 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

2010

Nanoporous manganese oxides as environmental protective materials: Effect of Ca and Mg on metals sorption

Pakarinen, J., Koivula, R., Laatikainen, M., Laatikainen, K., Paatero, E. & Harjula, R., 2010, I : Journal of Hazardous Materials. 180, 1-3, s. 234-240 7 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Preparation of silica-supported nanoporous manganese oxides

Laatikainen, K., Pakarinen, J., Laatikainen, M., Koivula, R., Harjula, R. & Paatero, E., 2010, I : Separation and Purification Technology. 75, 3, s. 377-384 8 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

The effect of dopant's valence ( plus III and plus V) on the anion/cation uptake properties of antimony-doped tin dioxide

Koivula, R., 2010, I : Central European Journal of Chemistry. 8, 6, s. 1179-1184 6 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

2009

Behavior of silica-supported manganese oxides in hydrometallurgical separations

Pakarinen, J., Laatikainen, M., Sirola, K., Paatero, E., Koivula, R. & Harjula, R., 2009, I : Separation Science and Technology. 44, s. 3045-3074 30 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Removal of radiocobalt from EDTA-complexes using oxidation and selective ion exchange

Malinen, L., Koivula, R., Harjula, R. & Malinen, LE. K., 2009, I : Water Science and Technology. 60, 4, s. 1097-1101 5 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Sorption of radiocobalt and its EDTA complex on titanium antimonates

Malinen, L., Koivula, R. & Harjula, R., 2009, I : Journal of Hazardous Materials. 172, s. 875-879 5 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Use of hydrometallurgical wastewater as a precursor for the synthesis of cryptomelane-type manganese dioxide ion exchange material

Koivula, R., Pakarinen, J., Sivenius, M., Sirola, K., Harjula, R. & Paatero, E., 2009, I : Separation and Purification Technology. 70, s. 53-57 5 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

2007

Novel highly selective inorganic ion exchangers for the treatment of promblematic liquid redwaste

Harjula, R., Koivula, R., Paajanen, A., Helariutta, K., Kuronen, M., Kelokaski, P. & Sarparanta, M., 2007, I : Technical document/ International Atomic Energy Agency. 1579 (2007), 14 s

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

2003

Decontamination of radioactive cobalt, nickel, strontium, and cesium from simulate solutions using tin antimonate columns

Koivula, R., Paajanen, A., Harjula, R. & Lehto, J., 2003, I : Solvent Extraction and Ion Exchange. 21, 6, s. 915-928 14 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Ni-63 and Co-57 uptake and selectivity of tin antimonates of different structure

Koivula, R., Harjula, R. & Lehto, J., 2003, I : Separation Science and Technology. 38, s. 3795-3808 14 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

2002

Structure and ion exchange properties of tin antimonates with various Sn and Sb contents

Koivula, R., Harjula, R. & Lehto, J., 2002, I : Microporous and Mesoporous Materials. 55, s. 231-238 8 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

The effect of 0-100% Sn/Sb substitution on nickel uptake of tin antimonates

Koivula, R., Harjula, R. & Lehto, J., 2002, I : Journal of Materials Chemistry. 12, s. 3615-3619 5 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

2000

Purification of metal plating rinse waters with chelating ion exchangers

Koivula, R., Lehto, J., Pajo, L., Gale, T. & Leinonen, H., 2000, I : Hydrometallurgy. 56, 1, s. 93-108 16 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

1998

Ion exchange of radionuclides on natural and modified mica minerals

Koivula, R. & Lehto, J., 1998, I : Radiochemistry. 40, s. 507-510 4 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review