Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Sari Tuomikoski"'
Publikováno v:
Heliyon, Vol 8, Iss 12, Pp e12580- (2022)
Struvite (NH4MgPO4∗6H2O) is a slow-release fertilizer produced from phosphorus and nitrogen-containing wastewater in the presence of Mg salts. Commercial Mg salts are the single most significant cost of struvite precipitation. In this study, H2SO4
Externí odkaz:
https://doaj.org/article/a4ca375931c649b08611ff62b89aacf0
Autor:
Tatiana Samarina, Luca Guagneli, Esther Takaluoma, Sari Tuomikoski, Janne Pesonen, Outi Laatikainen
Publikováno v:
Frontiers in Environmental Science, Vol 10 (2022)
In this study, a technical scheme of an ammonium recovery process from diluted municipal or industrial wastewaters was developed, and the main operational parameters of adsorption/desorption and air-stripping/acid-scrubbing or membrane units were exa
Externí odkaz:
https://doaj.org/article/542fcc66d842425f900b30ab08322c92
Autor:
Hanna Runtti, Elavarasi Sundhararasu, Janne Pesonen, Sari Tuomikoski, Tao Hu, Ulla Lassi, Teija Kangas
Publikováno v:
ChemEngineering, Vol 7, Iss 1, p 5 (2023)
Five alkali-activated analcime (ANA) sorbents (ANA-MK 1, ANA 2, ANA 3, ANA-MK 4, and ANA-MK 5) were developed for ammonium (NH4+) ion removal. Acid treatment and calcination were used as pre-treatments for analcime, and metakaolin (MK) was used as a
Externí odkaz:
https://doaj.org/article/f5036eda8ca94605acac4f79b34fa3d0
Autor:
Elavarasi Sundhararasu, Hanna Runtti, Teija Kangas, Janne Pesonen, Ulla Lassi, Sari Tuomikoski
Publikováno v:
Resources, Vol 11, Iss 12, p 119 (2022)
The aim of this study was to examine the removal of ammonium ions from a synthetic model solution by using Na-zeolite-based geopolymers. Na-zeolite (=analcime) is a residue from mining industry. Three adsorbents were prepared from Na-zeolite using di
Externí odkaz:
https://doaj.org/article/1998df4569bb44ec8337cc284479450f
Publikováno v:
Resources, Vol 10, Iss 12, p 127 (2021)
In the field of electrocoagulation (EC), various studies on pollutant removal and on the use of different EC technologies have already been made. An EC process generates sludge, which is considered waste, resulting in increased operational costs that
Externí odkaz:
https://doaj.org/article/e48afbcfb433482a9c495c3c5865a741
Autor:
Elavarasi Sundhararasu, Sari Tuomikoski, Hanna Runtti, Tao Hu, Toni Varila, Teija Kangas, Ulla Lassi
Publikováno v:
ChemEngineering, Vol 5, Iss 1, p 13 (2021)
Alkali-activated adsorbents were synthesized by mixing three different slags from the steel industry: blast furnace slag (BFS), ladle slag (LS), and Lintz–Donawitz converter slag (LD). These powdered slag-based geopolymers (GP) were used to remove
Externí odkaz:
https://doaj.org/article/9a4764664add4f5b8c2694e53c807e8b
Autor:
Riikka Juhola, Anne Heponiemi, Sari Tuomikoski, Tao Hu, Mika Huuhtanen, Davide Bergna, Ulla Lassi
Publikováno v:
Catalysts, Vol 11, Iss 2, p 251 (2021)
New carbonized biomass–metakaolin (PSD/MK_Fe) granular composite catalyst materials were manufactured for the catalytic wet air oxidation (CWAO) of bisphenol A (BPA). These catalysts were characterized using different analytical and spectroscopic t
Externí odkaz:
https://doaj.org/article/bb193eb21a1745a6b227b7c85844bf7f
Publikováno v:
BioResources, Vol 11, Iss 2, Pp 3136-3152 (2016)
Sulphate removal from mine water is a problem because traditional chemical precipitation does not remove all sulphates. In addition, it creates lime sediment as a secondary waste. Therefore, an inexpensive and environmental-friendly sulphate removal
Externí odkaz:
https://doaj.org/article/008ada921b084197b7760630c95c129b
Autor:
Sari Tuomikoski, Riikka Kupila, Henrik Romar, Davide Bergna, Teija Kangas, Hanna Runtti, Ulla Lassi
Publikováno v:
Applied Sciences, Vol 9, Iss 21, p 4583 (2019)
Sawdust was used as a precursor for the production of biomass-based activated carbon. Carbonization and activation are single-stage processes, and steam was used as a physical activation agent at 800 °C. The adsorption capacity towards zinc was test
Externí odkaz:
https://doaj.org/article/c214b9be83e4460681da823f56da4a23
Autor:
Janne Pesonen, Pekka Myllymäki, Sari Tuomikoski, Gwen Vervecken, Tao Hu, Hanna Prokkola, Pekka Tynjälä, Ulla Lassi
Publikováno v:
ChemEngineering, Vol 3, Iss 2, p 40 (2019)
Phosphorus as phosphate and nitrogen as ammonium or nitrate are the main nutrients in wastewaters and agricultural sludges. They runoff easily to waterways and cause eutrophication in water bodies. However, ammonium and phosphate could be precipitate
Externí odkaz:
https://doaj.org/article/58060682810843319a20ae014efef9ff