Search Results - "Koivula, Risto"

Compositional Analysis of Metal(IV) Phosphate and Phosphonate Materials—Pitfalls and Best Practices by Koivula, Risto, Zhang, Wenzhong

“…Metal(IV) phosphate and phosphonates materials have increasingly found their applications in water purification, heterogeneous catalysis, drug delivery, and…”
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Efficient and Selective Recovery of Trace Scandium by Inorganic Titanium Phosphate Ion-Exchangers from Leachates of Waste Bauxite Residue by Zhang, Wenzhong, Koivula, Risto, Wiikinkoski, Elmo, Xu, Junhua, Hietala, Sami, Lehto, Jukka, Harjula, Risto

“…Bauxite residue (BR) is an inevitable industrial waste generated through the classic Bayer extraction of alumina from bauxite minerals. It contains relatively…”
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Selective extraction of aliphatic amines by functionalized mesoporous silica-coated solid phase microextraction Arrow by Lan, Hangzhen, Zhang, Wenzhong, Smått, Jan-Henrik, Koivula, Risto T., Hartonen, Kari, Riekkola, Marja-Liisa

“…Mesoporous silica-coated solid phase microextraction (SPME) Arrow systems were developed for capturing of low-molecular-weight aliphatic amines (LMWAAs) from…”
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A simple method for quantifying iodate and iodide fractions in solution using Ag+-impregnated activated carbon by Suorsa, Valtteri, Otaki, Miho, Zhang, Wenzhong, Virkanen, Juhani, Koivula, Risto

“…The speciation of iodine in environment must be known in order to properly assess its geological fate and to study potential remediation materials for the…”
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Capture of Co(II) from its aqueous EDTA-chelate by DTPA-modified silica gel and chitosan by Repo, Eveliina, Malinen, Leena, Koivula, Risto, Harjula, Risto, Sillanpää, Mika

“…▸ DTPA-modified silica gel and chitosan were effective adsorbents for Co(II). ▸ Removal of Co(II) was possible in the presence of EDTA, oxalate, and iron. ▸…”
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The effect of phosphonates on lanthanide separation for surface-grafted porous zirconia by Otaki, Miho, Suominen, Topi, Suorsa, Valtteri, Hietala, Sami, Koivula, Risto T

“…The effect of phosphonate groups on selective lanthanide sorption for a series of inorganic-organic hybrid materials was investigated. Four functional ligands…”
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Solid-State Conversion of Scandium Phosphate into Scandium Oxide with Sodium Compounds by Yagmurlu, Bengi, Zhang, Wenzhong, Heikkilä, Mikko J, Koivula, Risto T, Friedrich, Bernd

“…The application of scandium (Sc) is hindered by insufficient supply. The majority of the world Sc supply is sourced from industrial byproducts, where Sc needs…”
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Detecting radioactive particles in complex environmental samples using real-time autoradiography by Ang, Joyce W. L., Bongrand, Arthur, Duval, Samuel, Donnard, Jérôme, Jolis, Ester M., Utsunomiya, Satoshi, Minomo, Kenta, Koivula, Risto, Siitari-Kauppi, Marja, Law, Gareth T. W.

“…Radioactive particles often contain very high radioactivity concentrations and are widespread. They pose a potential risk to human health and the environment…”
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The effect of dopant’s valence (+III and +V) on the anion/cation uptake properties of antimony-doped tin dioxide by Koivula Risto

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Selective Separation of Lithium from Leachate of Spent Lithium-Ion Batteries by Zirconium Phosphate/Polyacrylonitrile Composite: Leaching and Sorption Behavior by Haruna, Baffa, Luo, Zhongyan, Muhammad, Mujtaba Aminu, Tang, Jinfeng, Kuva, Jukka, Koivula, Risto, Bao, Hongli, Xu, Junhua

“…This study introduces a straightforward and effective amorphous ZrP/polyacrylonitrile composite ion exchange method for separating Li from the leachate of…”
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Electroblown titanium dioxide and titanium dioxide/silicon dioxide submicron fibers with and without titania nanorod layer for strontium(II) uptake by Paajanen, Johanna, Pettilä, Lauri, Lönnrot, Satu, Heikkilä, Mikko, Hatanpää, Timo, Ritala, Mikko, Koivula, Risto

“…•Submicron titania and titania/silica composite fibers were prepared by electroblowing.•Rutile titania nanorods were hydrothermally synthesized on the…”
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Column Separation of Am(III) and Eu(III) by α-Zirconium Phosphate Ion Exchanger in Nitric Acid by Wiikinkoski, Elmo W., Rautsola, Iiro, Xu, Junhua, Koivula, Risto

“…The trivalent lanthanide-actinide separations are a major challenge in reprocessing of nuclear fuels. To achieve this, commonly organic extractants and…”
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Tunnel manganese oxides prepared using recovered LiMn2O4 from spent lithium-ion batteries: Co adsorption behavior and mechanism by Zhang, Yulai, Li, Xiaodong, Chen, Xiangping, Koivula, Risto, Xu, Junhua

“…The purpose of this study was to investigate Cobalt (Co) removal from wastewater using synthesized manganese oxides from the recovered LiMn2O4. An efficient…”
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Removal of Radionuclides from Fukushima Daiichi Waste Effluents by Lehto, Jukka, Koivula, Risto, Leinonen, Heikki, Tusa, Esko, Harjula, Risto

“…This paper describes the processes used at the Fukushima Daiichi plant, Japan, to purify the waste effluents generated in the cooling of damaged reactors…”
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Intra-lanthanide separation performance of DOTP: Solid-phase extraction and selective precipitation studies by Otaki, Miho, Suominen, Topi, Hietala, Sami, Koivula, Risto T.

“…[Display omitted] •Macrocyclic aminophosphonate DOTP is applicable for intra-lanthanide separation.•Zirconia-DOTP hybrid sorbents exhibits only moderate…”
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Arsenic (III) removal from water by hydroxyapatite‐bentonite clay‐nanocrystalline cellulose by Hokkanen, Sanna, Doshi, Bhairavi, Srivastava, Varsha, Puro, Liisa, Koivula, Risto

“…In the present study, natural, non‐toxic nano size adsorption material: hydroxyapatite‐bentonite clay‐nanocrystalline cellulose (CHA‐BENT‐NCC) was successfully…”
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New insights into the mechanism of cesium sorption on titanium hexacyanoferrate: Experimental findings and model development by Nong, Caiyong, Li, Xiaodong, Koivula, Risto, Xu, Junhua, Szlachta, Małgorzata

“…[Display omitted] •Titanium hexacyanoferrate exhibited a 25% vacancy ratio within the framework.•Titanium hexacyanoferrate possessed a high Cs+ sorption…”
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Selective ion-exchange separation of scandium(III) over iron(III) by crystalline α-zirconium phosphate platelets under acidic conditions by Avdibegović, Dženita, Zhang, Wenzhong, Xu, Junhua, Regadío, Mercedes, Koivula, Risto, Binnemans, Koen

“…[Display omitted] •Zirconium phosphate possesses excellent selectivity towards Sc(III).•The sorption capacity of zirconium phosphate for Sc(III) is…”
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Anion exchange on hydrous zirconium oxide materials: application for selective iodate removal by Suorsa, Valtteri, Otaki, Miho, Suominen, Topi, Virkanen, Juhani, Reijola, Hanna, Bes, René, Koivula, Risto

“…The radioactive 129 I is a top-priority radionuclide due to its the long half-life (1.57 × 10 7 years) and high mobility. Because of the planned and accidental…”
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Polyacrylonitrile-encapsulated amorphous zirconium phosphate composite adsorbent for Co, Nd and Dy separations by Xu, Junhua, Virolainen, Sami, Zhang, Wenzhong, Kuva, Jukka, Sainio, Tuomo, Koivula, Risto

“…[Display omitted] •The am-ZrP evenly distributed in porous am-ZrP/PAN Beads.•The uptake enhanced and induced from DMF intercalation.•The real-life separation…”
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