Search Results - "LEHTO, Jukka"

Electromigration experiments for studying transport parameters and sorption of cesium and strontium on intact crystalline rock by Puukko, Esa, Lehto, Jukka, Lindberg, Antero, Voutilainen, Mikko

“…This study aims to determine upscaling factors for the radionuclides' distribution coefficients (Kd) on crushed rocks to intact rock for the safety analysis of…”
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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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Aerosol particle size distribution of atmospheric lead-210 in northern Finland by Paatero, Jussi, Ioannidou, Alexandra, Ikonen, Jussi, Lehto, Jukka

“…Size-segregated aerosol samples were collected with a high-volume 6-stage cascade impactor at Sodankylä, Finland, 100 km north of the Arctic Circle. The 210Pb…”
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The sorption of alkaline earth metals on biotite by Söderlund, Mervi, Ervanne, Heini, Muuri, Eveliina, Lehto, Jukka

“…The sorption of alkaline earth cations Ca2+, Sr2+, Ba2+, and Ra2+ was investigated on Na-converted biotite, the main sorbing mineral in granitic bedrock at the…”
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Removal of metals and anions from drinking water by ion exchange by Vaaramaa, Kaisa, Lehto, Jukka

“…Five organic and two inorganic ion exchangers were evaluated for the removal of metals and anions from water of two drilled wells. Sodium titanate (CoTreat)…”
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Selenium sorption on clays in synthetic groundwaters representing crystalline bedrock conditions by Ervanne, Heini, Hakanen, Martti, Lehto, Jukka

“…The sorption behaviour of selenium on kaolinite and illite minerals in synthetic groundwaters was evaluated using the mass distribution coefficient, R d ,…”
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Uptake of radioiodide by Paenibacillus sp., Pseudomonas sp.,Burkholderia sp. and Rhodococcus sp. isolated from a boreal nutrient-poor bog by Lusa, Merja, Lehto, Jukka, Aromaa, Hanna, Knuutinen, Jenna, Bomberg, Malin

“…Radionuclides, like radioiodine（^129I）, may escape deep geological nuclear waste repositories and migrate to the surface ecosystems. In surface ecosystems,…”
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Batch sorption experiments of cesium and strontium on crushed rock and biotite for the estimation of distribution coefficients on intact crystalline rock by Lehto, Jukka, Puukko, Esa, Lindberg, Antero, Voutilainen, Mikko

“…The distribution coefficient (Kd) of radionuclides on bedrock is one of the key parameters used in the safety analysis of spent nuclear fuel repositories…”
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Behaviour of Metals during Bioheap Leaching at the Talvivaara Mine, Finland by Tuovinen, Hanna, Pelkonen, Mila, Lempinen, Janne, Pohjolainen, Esa, Read, David, Solatie, Dina, Lehto, Jukka

“…The behaviour of base metals Ni, Zn, Cu, Co, Fe, and Mn, potentially toxic metals Pb, Cr, and Cd, and the radioactive elements, U and Th, in the Talvivaara…”
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The uptake of Ni2+ and Ag+ by bacterial strains isolated from a boreal nutrient-poor bog by Merja Lusa, Jukka Lehto, Malin Bomberg

“…We studied the uptake of Ni2+ and Ag+ by bacterial strains of Paenibacillus, Pseudomonas, Burkholderia and Rhodococcus isolated from an acidic nutrient-poor…”
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Distribution of 210Pb and 210Po in boreal forest soil by Vaaramaa, Kaisa, Aro, Lasse, Solatie, Dina, Lehto, Jukka

“…Vertical distribution and activity contents of 210Pb and 210Po were investigated in forest soils of Scots pine-dominated ( Pinus sylvestris L.) stands from…”
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Speciation of 129I in sea, lake and rain waters by Lehto, Jukka, Räty, Tero, Hou, Xiaolin, Paatero, Jussi, Aldahan, Ala, Possnert, Göran, Flinkman, Juha, Kankaanpää, Harri

“…Concentrations of the very long-lived fission product 129I and stable iodine (127I) in the Baltic Sea and lake and rain waters from Finland, were measured as…”
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Ion-exchange of nickel by iminodiacetic acid chelating resin Chelex 100 by Leinonen, Heikki, Lehto, Jukka

“…The distribution coefficient ( K D) of trace nickel on an iminodiacetate-chelating resin Chelex 100 increased with pH to a peak value close to 2 000 000 ml/g…”
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EFFECTIVE HALF-LIVES OF 134Cs AND 137Cs IN REINDEER MEAT AND IN REINDEER HERDERS IN FINLAND AFTER THE CHERNOBYL ACCIDENT AND THE ENSUING EFFECTIVE RADIATION DOSES TO HUMANS by Leppänen, Ari-Pekka, Muikku, Maarit, Jaakkola, Timo, Lehto, Jukka, Rahola, Tua, Rissanen, Kristina, Tillander, Michael

“…Monitoring of Cs in reindeer herders and in reindeer meat in Finnish Lapland began in the early 1960s and has continued until today. The monitoring of Cs in…”
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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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Use inorganic ion exchange materials as precoat filters for nuclear waste effluent treatment by Harjula, Risto, Lehto, Jukka, Paajanen, Airi, Tusa, Esko, Yarnell, P.

“…Novel inorganic ion exchange materials CsTreat ®, CoTreat, CsFloc and CoFloc were tested as precoat filter materials for the removal of radiocobalt and…”
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Sorption and speciation of selenium in boreal forest soil by Söderlund, Mervi, Virkanen, Juhani, Holgersson, Stellan, Lehto, Jukka

“…Sorption and speciation of selenium in the initial chemical forms of selenite and selenate were investigated in batch experiments on humus and mineral soil…”
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Metal Distribution in Lakes Surrounding the Kostomuksha Iron Mine and Ore Dressing Mill in Northwestern Russia by Lehto, Jukka, Lusa, Merja, Virkanen, Juhani, Paatero, Jussi, Várkonyi, Gergely, Heikkilä, Raimo, Kashevarov, Boris, Ieshko, Eugeny

“…Jukka Lehto1, Merja Lusa1, Juhani Virkanen2, Jussi Paatero3, Gergely Várkonyi4, Raimo Heikkilä5, Boris Kashevarov6 and Eugeny Ieshko71University of Helsinki,…”
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Fractionation of U, Th, Ra and Pb from boreal forest soils by sequential extractions by Virtanen, Sinikka, Vaaramaa, Kaisa, Lehto, Jukka

“…•A five-step sequential extraction was performed to boreal forest soil samples.•Extractions gave information about mobility and sorption of natural…”
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Ion Exchange of Cesium on Potassium Nickel Hexacyanoferrate (II) s by MIMURA, Hitoshi, LEHTO, Jukka, HARJULA, Risto

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