Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Pirkonen, Pentti"'
Autor:
Kyllönen, Hanna, Pirkonen, Pentti, Nyström, Marianne, Nuortila-Jokinen, Jutta, Grönroos, Antti
Publikováno v:
In Ultrasonics - Sonochemistry 2006 13(4):295-302
Autor:
Grönroos, Antti *, Kyllönen, Hanna, Korpijärvi, Kirsi, Pirkonen, Pentti, Paavola, Teija, Jokela, Jari, Rintala, Jukka
Publikováno v:
In Ultrasonics - Sonochemistry 2005 12(1):115-120
Autor:
Kyllönen, Hanna, Pirkonen, Pentti, Hintikka, Väinö, Parvinen, Pekka, Grönroos, Antti, Sekki, Hannu
Publikováno v:
In Ultrasonics - Sonochemistry 2004 11(3):211-216
Autor:
Pirkonen, Pentti, Ekberg, B.
Publikováno v:
In Progress in Filtration and Separation 2015:399-421
Publikováno v:
Pirkonen, P, Arnold, M & Merta, E 2013, Cost efficient management of sludge and concentrates . in Research highlights in green solutions for water and waste . VTT Technical Research Centre of Finland, Espoo, VTT Research Highlights, no. 4, pp. 18-24 . < https://publications.vtt.fi/pdf/researchhighlights/2013/R4.pdf#page=19 >
Sludge, or liquid waste, is a very voluminous waste with high water content (> 95%) and the cost of sludge treatment can be 30–50% of the total operation costs at a water treatment plant (WWTP).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=355e65625b88::9a1045d5fa971038dba85d03abfac5f1
https://cris.vtt.fi/en/publications/a42840bb-e66f-4800-8d3e-14a6a8c037b9
https://cris.vtt.fi/en/publications/a42840bb-e66f-4800-8d3e-14a6a8c037b9
Publikováno v:
Tanaka, A, Seppänen, V, Houni, J, Sneck, A & Pirkonen, P 2012, ' Nanocellulose characterization with mechanical fractionation ', Nordic Pulp and Paper Research Journal, vol. 27, no. 4, pp. 689-694 . https://doi.org/10.3183/NPPRJ-2012-27-04-p689-694
A novel fractionation method was developed to characterize nanocellulose in terms of particle size. The fractionation device ues screens or membranes with known size. The scale is in the range of micro to nano, so that NFCs can be size- or shape-frac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=355e65625b88::163971a5a2dc41749026b7c78cad7e83
https://cris.vtt.fi/en/publications/efb9e7ab-af82-44e6-81b6-a093dbc71063
https://cris.vtt.fi/en/publications/efb9e7ab-af82-44e6-81b6-a093dbc71063
Publikováno v:
Mäkinen, L, Ämmälä, A, Pirkonen, P & Niinimäki, J 2012, ' Sludges : Analysis procedure for evaluating the utilisation potential ', International Paperworld IPW, no. 1, pp. 36-42 . < http://www.ipwonline.de/ipw/Home/Issue/19 >
A study was conducted to develop an analytical procedure that would provide information of the utilization potential of sludge fractions. The possibility to recirculated material within a process was investigated including the cleanliness of the frac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=355e65625b88::54a9d30d7eba808d2b1992147329bd90
https://cris.vtt.fi/en/publications/a20872f2-5ddd-43e9-8b2a-8787e5df7a7c
https://cris.vtt.fi/en/publications/a20872f2-5ddd-43e9-8b2a-8787e5df7a7c
Publikováno v:
Grönroos, A, Pirkonen, P & Kyllönen, H 2008, ' Ultrasonic degradation of aqueous carboxymethylcellulose : Effect of viscosity, molecular mass, and concentration ', Ultrasonics Sonochemistry, vol. 15, no. 4, pp. 644-648 . https://doi.org/10.1016/j.ultsonch.2007.09.005
It is well established that prolonged exposure of solutions of macromolecules to high-energy ultrasonic waves produces a permanent reduction in viscosity. It is generally agreed as well and also this study proved the hydrodynamic forces to have the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0cff3767cfe5f17a55390646c6fe52f
https://pubmed.ncbi.nlm.nih.gov/17986397
https://pubmed.ncbi.nlm.nih.gov/17986397
Publikováno v:
Korpijärvi, K, Isännäinen, S & Pirkonen, P 2003, Intensification of sludge dewatering by power ultrasound . in H Delmas & A Wilhelm (eds), Proceedings of 4th Conference Applications of Power Ultrasound in Physical and Chemical Processing . PROGEP, 4th Conference on the Applications of Power Ultrasound in Physical and Chemical Processing, USOUND4, Besancon, France, 22/05/03 .
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=355e65625b88::d0466ea01fd14f600f07765cf60fee48
https://cris.vtt.fi/en/publications/14852a83-c7e5-4a09-8b02-d3c4ca0a8234
https://cris.vtt.fi/en/publications/14852a83-c7e5-4a09-8b02-d3c4ca0a8234