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Dissolution of sodium, aluminum and caustic compounds from bauxite residues
(Elsevier, 2015-08)
Bauxite residues consist of solid particles and a strongly alkaline liquid. Depending on the selected disposal method, the solids content of washed bauxite residues varies from 30 to 70 w-%. The objective of this study is ...
What determines customers’ engagement in the digital service process?
(Emerald Publishing Limited, 2018)
Purpose - The focus of this paper is on customer engagement behavior (CEB) in digital environments. Specifically, the paper seeks to determine the factors that affect CEB in the different parts of the digital service ...
Use of filter aids to improve the filterability of enzymatically hydrolyzed biomass suspensions
(American Chemical Society, 2013-09-26)
Filter aids are used in challenging filtration applications, such as the deliquoring of biomass suspensions and separation of fine particles from liquids. Organic filter aids, typically composed of cellulose, may be the ...
Recovery of sodium from bauxite residue by pressure filtration and cake washing
(Elsevier, 2015-08-10)
Bauxite residue, the main waste fraction of alumina production, is extremely hazardous to the environment, as well as to human health. After the recovery of the pregnant liquor, the washed and thickened bauxite residue is ...
Enabling safe dry cake disposal of bauxite residue by deliquoring and washing with a membrane filter press
(SAGE Publications, 2015-02-16)
Dry cake disposal is the preferred technique for the disposal of bauxite residue, when considering environmental issues together with possible future utilisation of the solids. In order to perform dry cake disposal in an ...
Numerical study on the effect of cross-section orientation on fluid flow and heat transfer in a periodic serpentine triangular microchannel
(Elsevier, 2017)
The influence of cross-section orientation on fluid flow and heat transfer in a periodic serpentine equilateral triangular microchannel was investigated by means of computational fluid dynamics (CFD) modeling. Serpentine ...
Challenges related to solute analysis of bauxite residue filter cakes
(Elsevier, 2018-05)
Solute analysis of bauxite residue filter cakes is an important but not very well understood operation carried out at refineries and in scientific research. As more and more refineries rely currently on dry cake disposal ...
Model-based design and optimisation of hydrometallurgical liquid–liquid extraction processes
(Lappeenranta University of Technology, 2018-11-12)
Hydrometallurgical methods are suitable for the treatment of primary, secondary, highand low-grade raw materials enabling the production of metals essential to modern society, in an environmentally and economically sustainable ...
Novel treatment methods for green liquor dregs and enhancing circular economy in kraft pulp mills
(Lappeenranta University of Technology, 2018-12-17)
Green liquor dregs (GLD) are known to be the largest fraction of inorganic residue in the kraft pulping process, or even in virgin pulp production. GLD originates from the chemical recovery cycle where effective cooking ...
Reduction of the width of particle size distribution to improve pressure filtration properties of slurries
(Elsevier, 2017-03)
The filtration properties of mineral slurries depend for instance on the properties of the solid particles and on the way how these particles arrange themselves when the filter cake is formed. In cake filtration applications, ...