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Separation, treatment and utilization of inorganic residues of chemical pulp mills
(Elsevier, 2016-10-01)
The major inorganic solid residues of chemical pulp mills include green liquor dregs, various lime residues, recovery boiler fly ash, and salt cake produced at the chlorine dioxide generator. Only a small proportion of ...
Recovery of valuable metals from argon oxygen decarburization (AOD) dusts by leaching, filtration and solvent extraction
(Elsevier, 2013)
For each ton of steel produced from a typical steelmaking plant, up to several tens of kilograms of dust, containing significant amounts of valuable and/or environmentally harmful metals, are also produced. A hydrometallurgical ...
Systematic study on sulfate removal from mining waters by electrocoagulation
(Elsevier, 2019-01-28)
The mining industry is known to be a major producer of sulfate-rich waters that are harmful to aquatic systems, accelerate acid mine drainage formation and hinder the reuse and recycling of process water. In recent years, ...
Improvement of the filtration characteristics of calcite slurry by hydrocyclone classification
(Elsevier Ltd., 2018-09-01)
Hydrocyclones are used in the classification of solids for instance in the mining and minerals processing industries for modifying the particle size distribution of solids, as well as for ore concentration purposes. ...
The effect of pH adjustment on the properties and pressure filtration characteristics of bauxite residue slurries
(Elsevier, 2018-11-10)
The influence of the slurry pH on the characteristics of a topical unit operation, pressure filtration of bauxite residue slurries, was investigated in this experimental study. The primary aim of pH adjustment is to ...
Effective removal of hazardous trace metals from recovery boiler fly ashes
(Elsevier, 2018-02-15)
The objective of this study is to introduce a treatment sequence enabling straightforward and effective recovery of hazardous trace elements from recovery boiler fly ash (RBFA) by a novel method, and to demonstrate the ...
Effect of mixing on enzymatic hydrolysis of cardboard waste: Saccharification yield and subsequent separation of the solid residue using a pressure filter
(Elsevier, 2012-04)
Cellulosic wastes, from sources such as low-quality cardboard and paper, are regarded as potential feedstocks for bioethanol production. One pathway from these cellulosic materials to ethanol is saccharification (hydrolysis) ...
Removal of chloride from fly ash produced in hazardous waste incineration by leaching and displacement washing in a vertical filter press
(SAGE Publishing, 2013-01-11)
Fly ash is generated in large quantities by waste incineration processes. Chloride is commonly present in the fly ash produced by the incineration of hazardous materials, such as polyvinylchloride plastic. Major difficulties ...
Solid-liquid separation of hydrolysates obtained from enzymatic hydrolysis of cardboard waste
(Elsevier, 2012-07)
Enzymatic hydrolysis provides an environmentally friendly pathway from cellulosic biomass to sugars that can be fermented to produce ethanol. The hydrolysis step has a marked influence on the overall efficiency of the ...
Local properties of filter cakes formed from pH-adjusted bauxite residue slurries
(Elsevier, 2018-04-03)
Solid-liquid separation of bauxite residue is a topical issue in the alumina industry, not least due to the great quantity and problematic properties of this highly alkaline residue. The objective of this contribution is ...