Výsledky vyhledávání - "Ville Puhakka"

Fabrication of carbon nanotubes reinforced silica composites with improved rare earth elements adsorption performance

Autor: Ville Puhakka, Deepika Lakshmi Ramasamy, Bhairavi Doshi, Mika Sillanpää, Sidra Iftekhar

Publikováno v: Chemical Engineering Journal. 365:291-304

The continuous exploration of carbon nanotubes (CNTs) in terms of their chemical functionalization attributes, has engrossed the members of both the research and industrial community for scientific advancements alongside a variety of potential applic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d47e2092d905f6fdf99f58e1e173bac3
https://doi.org/10.1016/j.cej.2019.02.057

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Two-stage selective recovery process of scandium from the group of rare earth elements in aqueous systems using activated carbon and silica composites: Dual applications by tailoring the ligand grafting approach

Autor: Eveliina Repo, Deepika Lakshmi Ramasamy, Ville Puhakka, Mika Sillanpää, Samia Ben Hammouda

Publikováno v: Chemical Engineering Journal. 341:351-360

A steady, reliable and enhanced scale of scandium (Sc) supply is of paramount importance in the current industrial sector, specifically, in the production of solid oxide fuel cells and scandium based aluminum alloys. Despite an expensive price quote,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6672624e835c9ad297807598f6ae262d
https://doi.org/10.1016/j.cej.2018.02.024

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Selective separation of scandium from iron, aluminium and gold rich wastewater using various amino and non-amino functionalized silica gels – A comparative study

Autor: Mika Sillanpää, Deepika Lakshmi Ramasamy, Eveliina Repo, Ville Puhakka

Publikováno v: Journal of Cleaner Production. 170:890-901

Scandium (Sc) is a very expensive Rare Earth Element (REE), which is less abundance in natural mineral ores. It is often recovered in the form of by-products from industrial tailings and residues (such as Bauxite residue/red mud), accompanied with am

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dc97319f4589b0ddc54f5703af97de3d
https://doi.org/10.1016/j.jclepro.2017.09.199

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Coordination and silica surface chemistry of lanthanides (III), scandium (III) and yttrium (III) sorption on 1-(2-pyridylazo)-2-napththol (PAN) and acetylacetone (acac) immobilized gels

Autor: Deepika Lakshmi Ramasamy, Mika Sillanpää, Ville Puhakka, Shoaib Khan, Eveliina Repo

Publikováno v: Chemical Engineering Journal. 324:104-112

This article focuses on identifying the coordination and silica surface chemistry of PAN immobilized mesoporous silica gel in the adsorption of Rare earth elements (REE) in comparison to acetylacetone (acac) immobilized gel. PAN is used as an analyti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::df8f67b54547f5ebb776f95d15f3bbbb
https://doi.org/10.1016/j.cej.2017.05.025

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N- and O- ligand doped mesoporous silica-chitosan hybrid beads for the efficient, sustainable and selective recovery of rare earth elements (REE) from acid mine drainage (AMD): Understanding the significance of physical modification and conditioning of the polymer

Autor: Sidra Iftekhar, Evgenia Iakovleva, Samia Ben Hammouda, Deepika Lakshmi Ramasamy, Eveliina Repo, Anna Wojtuś, Ville Puhakka, Mika Sillanpää

Publikováno v: Journal of hazardous materials. 348

Silica-chitosan hybrid beads were synthesized via three different methods to investigate the selective recovery of REE from AMD. The influence of amino/non-amino silanes, high molecular weight/high viscous chitosan and N-/O- based ligands were studie

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15b5cdd95cd65c271546a63abf18e271
https://pubmed.ncbi.nlm.nih.gov/29367136

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