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  • PL 55 (A. I. Virtasen aukio 1)

    00014

    Finland

1987 …2019
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Publications 1987 2019

2019

Neptunium(V) transport in granitic rock: A laboratory scale study on the influence of bentonite colloids

Elo, O., Hölttä, P., Kekäläinen, P., Voutilainen, M. & Huittinen, N. M., Apr 2019, In : Applied Geochemistry. 103, p. 31-39 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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2017

Batch sorption and spectroscopic speciation studies of neptunium uptake by montmorillonite and corundum

Elo, O., Müller, K., Ikeda-Ohno, A., Bok, F., Scheinost, A. C., Hölttä, P. & Huittinen, N., 1 Feb 2017, In : Geochimica et Cosmochimica Acta. 198, p. 168-181 14 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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2016

Injection grout Silica Sol as a source of stable silica colloids

Hölttä, P-L., Lahtinen, M. E., Niemiaho, S. M., Elo, O. H. M., Suorsa, M. V., Lehto, J. K. & Juhola, P., 2016, (In preparation) In : Surface and Colloid Science.

Research output: Contribution to journalArticleScientificpeer-review

2014

Assessment of Bentonite Characteristics in KBS3 Method

Olin, M., Korkiala-Tanttu, L., Tiljander, M., Hölttä, P., Serimaa, R., Kataja, M., Laitinen, M. & Rasilainen, K., 2014, WM2014 Conference Proceedings. Vol. 40. 14344

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Interaction of Radionuclides and Colloids Released from Materials Related to the Disposal of SNF

Hölttä, P., Niemiaho, S., Elo, O., Harjula, R. & Lehto, J., 2014, WM2014 Conference Proceedings. WM Symposia, Vol. 40. 14273

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Stability of Silica Colloids Released from Injection Grout Silica Sol - 14130

Hölttä, P., Lehto, J. & Harjula, R., 2014, WM2014 Conference Proceedings. WM Symposia, 14130

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

2011

Solutions to and Validation of Matrix-Diffusion Models

Kekäläinen, P., Voutilainen, M. A., Poteri, A., Hölttä, P., Hautojärvi, A. & Timonen, J., Mar 2011, In : Transport in Porous Media. 87, 1, p. 125–149 25 p.

Research output: Contribution to journalArticleScientificpeer-review

2010

Analysis of colloids released from bentonite and crushed rock

Lahtinen, M., Hölttä, P., Riekkola, M-L. & Yohannes, G., 2010, In : Physics and Chemistry of the Earth (2002) . 35, 6-8, p. 265-270 6 p.

Research output: Contribution to journalArticleScientificpeer-review

Effect of Ionic Strength on the Stability of Colloids Released from Injection Grout Silica Sol

Hölttä, P., Lahtinen, M. E., Hakanen, M., Lehto, J. & Juhola, P., 2010, Materials Research Society 2010 Spring Meeting: Scientific Basis for Nuclear Waste Management XXXIV . Smith, K. L. (ed.). Warrendale, PA: Materials Research Society, p. 245-250 6 p. (Materials Research Society Symposium Proceedings; vol. 1265).

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

2009

Release of colloids from injection grout silica sol

Hölttä, P-L., Hakanen, M. E., Lahtinen, M. E., Leskinen, A. A., Lehto, J. K. & Juhola, P., 2009, Materials Research Society symposia proceedings. Warrendale, PA: Materials Research Society, Vol. 1124. p. 1124-Q10-14

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Silica Colloids and their Effect on Radionuclide Sorption

Hölttä, P., Hakanen, M. & Lahtinen, M., 2009, Posiva. 39 p. (Posiva Working Report; no. 2009-26)

Research output: Book/ReportAnthology or special issue

The importance of matrix diffusion for the transport of mobile radionuclides in granitic rock: - summary of laboratory - scale experiments

Hölttä, P., Siitari-Kauppi, M. & Poteri, A., 2009, Mobile fission and activation products in nuclear waste disposal. France: OECD Nuclear Energy Agency, p. 185-195 11 p.

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

The Influence of Groundwater on the Stability of Silica Colloids

Hölttä, P., Lahtinen, M. E., Hakanen, M., Lehto, J. & Juhola, P., 2009, Unknown host publication. Burakov, B. E. & Aloy, A. S. (eds.). Warrendale, PA: Materials Research Society, Vol. 1193. (Materials Research Society Symposium Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

2008

Radionuclide retardation in granitic rocks by matrix diffusion and sorption

Hölttä, P., Siitari-Kauppi, M., Kelokaski, M. & Tukiainen, V., 2008, Materials Research Society symposia proceedings. Lee, W. E., Roberts, J. W., Hyatt, N. C. & Grimes, R. W. (eds.). Materials Research Society, Vol. 1107. p. 621-628

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Retardation of mobile radionuclides in granitic rock fractures by matrix diffusion

Hölttä, P., Poteri, A., Siitari-Kauppi, M. & Huittinen, N. M., 2008, In : Physics and Chemistry of the Earth (2002) . 33, 14-16, p. 983-990 8 p.

Research output: Contribution to journalArticleScientificpeer-review

Silica colloids and their effect on radionuclide sorption: A literature review

Hölttä, P. (ed.) & Hakanen, M. (ed.), 2008, Helsinki: Posiva. 43 p. (Posiva : Working report / Posiva Oy; no. 2008-29)

Research output: Book/ReportAnthology or special issue

¹³Cs,²³,²Pu and ²¹Am in bottom sediments and surface water of lake Päijänne, Finland

Lusa, M., Lehto, J., Leskinen, A., Hölttä, P. & Jaakkola, T., 2008, Proceedings. p. 204-207 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

2007

Determination of matrix diffusion properties of granite

Hölttä, P., Siitari-Kauppi, M., Huittinen, N. & Poteri, A., 2007, Materials Research Society symposia proceedings. p. 557-562 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

2004

Fracture flow and radionuclide transport in block-scale laboratory experiments

Hölttä, P., Poteri, A., Hakanen, M. & Hautojärvi, A., 2004, In : Radiochimica Acta. 92, 9-11, p. 775-779

Research output: Contribution to journalArticleScientificpeer-review

2001

Attempt to model laboratory-scale diffusion and retardation data

Hölttä, P., Siitari-Kauppi, M. K., Hakanen, M. & Tukiainen, V., 2001, In : Journal of Contaminant Hydrology. 47, 2-4, p. 139-148 10 p.

Research output: Contribution to journalArticleScientificpeer-review

1999

Cesium sorption on tonalite and mica gneiss

Siitari-Kauppi, M. K., Hölttä, P., Pinnioja, S. & Lindberg, A., 1999, In : Materials Research Society Symposia Proceedings. 556, 1099, p. 1099-1106

Research output: Contribution to journalConference articleScientificpeer-review

1998

Na, Ca and Sr retardation on crushed crystalline rock

Hölttä, P., Siitari-Kauppi, M., Lindberg, A. & Hautojärvi, A., 1998, In : Radiochimica Acta. 82, p. 279-285 7 p.

Research output: Contribution to journalArticleScientificpeer-review

1997

Radionuclide transport and retardation in rock fracture and crushed rock column experiments

Hölttä, P., Siitari-Kauppi, M., Hakanen, M., Huitti, T., Hautojärvi, A. & Lindberg, A., 1997, In : Journal of Contaminant Hydrology. 26, 1-4, p. 135-145 11 p.

Research output: Contribution to journalArticleScientificpeer-review

The Effect of Specific Surface Area on Radionuclide Sorption on Crushed Crystalline Rock

Hölttä, P., Siitari-Kauppi, M. K., Huikuri, P., Lindberg, A. & Hautojärvi, A., 1997, Materials Research Society . Vol. 465 . p. 789-796 (Materials Research Society Symposium Proceedings ; vol. 465 ).

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

1996

Characterization of the altered zone around a fracture in Palmottu natural analogue

Hartikainen, K., Pietarila, H., Rasilainen, K., Nordman, H., uskeeniemi, T., Hölttä, P., Siitari-Kauppi, M. K. & Timonen, J., 1996, In : Materials Research Society Symposia Proceedings. 412 , p. 839-846

Research output: Contribution to journalConference articleScientificpeer-review

The effects of matrix diffusion on radionuclide migration in rock column experiments

Holtta, P., Hakanen, M., Hautojarvi, A., Timonen, J. & Vaatainen, K., 1996, In : Journal of Contaminant Hydrology. 21, 1-4, p. 165-173

Research output: Contribution to journalArticleScientificpeer-review

1995

Radionuclide Retardation in Crystalline Rock Fractures

Hölttä, P., Siitari-Kauppi, M. K., Hakanen, M. & Hautojärvi, A., 1995, Scientific basis for nuclear waste management XVIII : symposium held October 23-27, 1994, Kyoto, Japan . Pittsburgh, PA : Materials Research Society, p. 355-362 (Materials Research Society symposium proceedings 0275-0112 ; vol. 353 ).

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

1993

Radionuclide migration studies on tonalite

Hölttä, P., Siitari-Kauppi, M. K., Hakanen, M. & Hautojärvi, A., 1993, Scientific Basis for Nuclear Waste Management XVI : symposium held November 30--December 4, Boston, USA . Pittsburg (PA) : Materials Research Society, p. 803-810 (Materials Research Society symposia proceedings ; no. 294 ).

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

1992

Review of sorption and diffusion parameters for TVO-92

Hakanen, M. & Hölttä, P., 1992, Vantaa ;: Imatran voima. 62 p. (Report / YJT;)

Research output: Book/ReportCommissioned report

TRANSPORT AND RETARDATION OF NON-SORBING RADIONUCLIDES IN CRYSTALLINE ROCK FRACTURES

HOLTTA, P., HAUTOJARVI, A. & HAKANEN, M., 1992, In : Radiochimica Acta. 58-9, Part 2, p. 285-290

Research output: Contribution to journalArticleScientificpeer-review

1991

Migration of radionuclides in fracture columns

Hölttä, P., Hakanen, M. & Hautojärvi, A., 1991, In : Materials Research Society Symposia Proceedings. 212, 669, p. 669-676

Research output: Contribution to journalConference articleScientificpeer-review

Radionuklidien pidättyminen VLJ-luolan täyteaineissa ja kalliossa

Hakanen, M. & Hölttä, P., 1991, Vantaa: Imatran voima. 52 p. (Raportti / Voimayhtiöiden ydinjätetoimikunta, YJT)

Research output: Book/ReportCommissioned report

1989

THE INFLUENCE OF AN ADDITIONAL FILTER IN EPITHERMAL NEUTRON-ACTIVATION ANALYSIS

SKARNEMARK, G., SKALBERG, M., TOKAY, RK., HOLTTA, P. & ROSENBERG, R., 1989, In : Applied Radiation and Isotopes. 40, 1, p. 37-40

Research output: Contribution to journalArticleScientificpeer-review

1987

Determination of the elemental composition of copper and bronze objects by neutron activation analysis

Hölttä, P. & Rosenberg, R., 1987, In : Journal of Radioanalytical and Nuclear Chemistry. 114, 2, p. 403-408

Research output: Contribution to journalConference articleScientificpeer-review