Photo of Risto Koivula
  • PL 55 (A. I. Virtasen aukio 1)

    00014

    Finland

19972022

Research output per year

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Publications

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2020

A simple method for quantifying iodate and iodide fractions in solution using Ag+-impregnated activated carbon

Suorsa, V., Otaki, M., Zhang, W., Virkanen, J. & Koivula, R., Apr 2020, In : Journal of Radioanalytical and Nuclear Chemistry. 324, 1, p. 135-142 8 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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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, In : Environmental progress & sustainable energy. 38, 5, 11 p., 13147.

Research output: Contribution to journalArticleScientificpeer-review

Electrospun sodium titanate fibres for fast and selective water purification

Santala, E., Koivula, R., Harjula, R. & Ritala, M., 6 Dec 2019, In : Environmental Technology. 40, 27, p. 3561-3567 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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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, In : Nanoscale Advances. 1, 11, p. 4373-4383 11 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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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, In : Microchimica Acta. 186, 7, 11 p., 412.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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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 May 2019, In : Separation and Purification Technology. 215, p. 81-90 10 p.

Research output: Contribution to journalArticleScientificpeer-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, In : Industrial & Engineering Chemistry Research. 58, 32, p. 14609-14620 12 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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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, In : ACS Applied Materials & Interfaces. 10, 26, p. 22083-22093 11 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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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, In : ChemistrySelect. 3, 33, p. 9583-9588 6 p.

Research output: Contribution to journalArticleScientificpeer-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, In : Chemical Engineering Journal. 351, p. 832-840 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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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, In : Hydrometallurgy. 175, p. 170-178 9 p.

Research output: Contribution to journalArticleScientificpeer-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, In : Radiochimica Acta. 105, 12, p. 1033–1042 10 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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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, In : ACS Sustainable Chemistry & Engineering. 5, 4, p. 3103-3114 12 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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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, In : Journal of Sustainable Metallurgy . 3, 3, p. 646-658 13 p.

Research output: Contribution to journalArticleScientificpeer-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, In : Journal of Materials Chemistry. A. 5, 45, p. 23805-23814 10 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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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, In : Radiochimica Acta. 104, 6, p. 415-422 8 p.

Research output: Contribution to journalArticleScientificpeer-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, In : ACS Applied Materials & Interfaces. 6, 24, p. 22387-22392 6 p.

Research output: Contribution to journalArticleScientificpeer-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, In : Journal of Radioanalytical and Nuclear Chemistry. 299, 1, p. 901-908 8 p.

Research output: Contribution to journalArticleScientificpeer-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, In : Desalination. 321, p. 93-102 10 p.

Research output: Contribution to journalArticleScientificpeer-review

2012

Ion exchange properties of sulfonated polycarbonate and polyimide track etch membranes

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

Research output: Contribution to journalArticleScientificpeer-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, In : Mineral Processing and Extractive Metallurgy Review. 33, 3, p. 204-219 16 p.

Research output: Contribution to journalArticleScientificpeer-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, In : Journal of Hazardous Materials. 187, 1-3, p. 122-132 11 p.

Research output: Contribution to journalArticleScientificpeer-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, In : Journal of Materials Science and Engineering B . 1, 6B, p. 736-746

Research output: Contribution to journalArticleScientificpeer-review

Selective Sorption of Technetium on Antimony-Doped Tin Dioxide.

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

Research output: Contribution to journalArticleScientificpeer-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, In : Journal of Hazardous Materials. 180, 1-3, p. 234-240 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Preparation of silica-supported nanoporous manganese oxides

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

Research output: Contribution to journalArticleScientificpeer-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, In : Central European Journal of Chemistry. 8, 6, p. 1179-1184 6 p.

Research output: Contribution to journalArticleScientificpeer-review

2009

Behavior of silica-supported manganese oxides in hydrometallurgical separations

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

Research output: Contribution to journalArticleScientificpeer-review

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

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

Research output: Contribution to journalArticleScientificpeer-review

Sorption of radiocobalt and its EDTA complex on titanium antimonates

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

Research output: Contribution to journalArticleScientificpeer-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, In : Separation and Purification Technology. 70, p. 53-57 5 p.

Research output: Contribution to journalArticleScientificpeer-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, In : Technical document/ International Atomic Energy Agency. 1579 (2007), 14 s

Research output: Contribution to journalArticleScientificpeer-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, In : Solvent Extraction and Ion Exchange. 21, 6, p. 915-928 14 p.

Research output: Contribution to journalArticleScientificpeer-review

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

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

Research output: Contribution to journalArticleScientificpeer-review

2002

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

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

Research output: Contribution to journalArticleScientificpeer-review

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

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

Research output: Contribution to journalArticleScientificpeer-review

2000

Purification of metal plating rinse waters with chelating ion exchangers

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

Research output: Contribution to journalArticleScientificpeer-review

1998

Ion exchange of radionuclides on natural and modified mica minerals

Koivula, R. & Lehto, J., 1998, In : Radiochemistry. 40, p. 507-510 4 p.

Research output: Contribution to journalArticleScientificpeer-review