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Adsorption of rare earth elements on novel “Mg-Al layered double hydroxide with gum arabic”
(2018)
In the last few decades, the demand for rare earth elements has increased, as there have been further discoveries for their use. Rare earth elements are used for very specific applications and can be extracted from different ...
Selective recovery of rare earth elements from diluted aqueous streams using n- and o-coordination ligand grafted organic-inorganic hybrid composites
(Lappeenranta-Lahti University of Technology LUT, 2019-06-04)
The dominance exerted by the rare earth elements (REE) on the significant technological advancements of the past decades has been unmitigated and unparalleled. With such an eminent role played by REEs, there exists a ...
Towards a sustainable valorisation of spilled oil by establishing a green chemistry between a surface active moiety of chitosan and oils
(Lappeenranta-Lahti University of Technology LUT, 2019-08-15)
This thesis presents fabrication of sustainable surfactants from bio-polymer and demonstrates their performance in dispersion of spilled oil with different quality of water and climatic conditions, to provide a sustainable ...
Synthesis of hybrid bio-nanocomposites and their application for the removal of rare earth elements from synthetic wastewater
(Lappeenranta-Lahti University of Technology LUT, 2019-06-03)
In recent decades, the application of rare earth elements (REEs) has become apparent in numerous technological sectors. The gap in the supply and demand of REEs, as well as the increasing pollution of REEs, has raised the ...
Recycling of cellulose-dissolving ionic liquids
(2018)
Production of wood-based cellulosic textile fibres is currently under intensive research. One of the most promising techniques to produce such fibres is the direct dissolution of cellulose by ionic liquid solvents. A crucial ...
Selective recovery of indium from secondary resources by iminodiacetic acid chitosan
(2019)
Indium demand has escalated drastically in the last few decades, due to the technological advancement and the introduction of the high-tech products such as Liquid Display Panels and the mobile device; this demand is not ...
Arvokkaiden metallien talteenotto elektroniikkajätteestä 3D-tulostetuilla kappaleilla
(2019)
Arvokkaiden tai muuten strategisesti tärkeiden alkuaineiden maailman malmivarantojen ehtyessä on vihdoin alettu havahtua niiden talteen ottamisen ja kierrättämisen tärkeydestä. Tässä työssä tutkittiin lähinnä arvokkaiden ...
Removal of pharmaceuticals from water using modified biochar
(2022)
The production of microalgae in wastewater is a sustainable method to obtain microalgal biomass because it biofixes carbon while remediating wastewater. The microalgae can then be pyrolyzed to produce valuable products ...
Adsorption of phosphorous and arsenic oxyanions to metal hydroxide and oxide surfaces
(2021)
This study focuses on two quite distinct elements, phosphorous and arsenic, and their removal from aqueous solutions by adsorption. On the surface, one could assume there is not much common with these two elements. Phosphorous ...
Real-time monitoring of membrane fouling caused by phenolic compounds
(Lappeenranta-Lahti University of Technology LUT, 2020-10-09)
Following the booming blooming of the bio-economy, membrane-based processes have gained increasing interest as a selective, energy efficient, and environmentally friendly option for the separation and purification of organic ...