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Evaluation of activation parameters of activated carbon from coffee and cocoa seed husk rests: carbon yields and Ni(II) adsorption capacity study Hasselt University
Activated carbon produced by a traditional two-step activation procedure from coffee husks (HAC) and cocoa seed husks (CAC) were used as adsorbents for Ni(II) removal in aqueous solution. Temperature, activation time and added water amount used during the activation process are studied through a model equation designed by a two-level full factorial design. Analysis of variance was used in evaluating AC in multiple response optimization to ...
Tailoring of porous texture of hemp stem-based activated carbon produced by phosphoric acid activation in steam atmosphere Hasselt University
A series of activated carbons (ACs) were produced by chemical activation of hemp stem with phosphoric acid in nitrogen and steam atmospheres. The potential of hemp-derived waste for the manufacture of porous carbons with a wide spectrum of porosity, ranging from microporous to mesoporous, has been demonstrated. The influence of the variables, such as the H3PO4/hemp stem impregnation ratio, the soaking time and the gaseous atmosphere, on the ...
Adsorption of cesium on different types of activated carbon Hasselt University
The optimal conditions to remove radiocesium from water by adsorption on activated carbon (AC) were investigated. Two commercial ACs were compared to ACs prepared by steam activation of brewers' spent grain. The influence of pH and loading AC with Prussian blue were studied. Cs-134, measured by gamma-ray spectroscopy, served as a tracer for the Cs concentration. Column experiments showed that a neutral to acidic pH enhanced adsorption compared ...
Activated Carbon by Co-pyrolysis and Steam Activation from Particle Board and Melamine Formaldehyde Resin: Production, Adsorption Properties and Techno Economic Evaluation Vrije Universiteit Brussel Hasselt University
One of the top strategic objectives and research areas in Europe is recovering wood from processing and end of life products. However, there are still several "contaminated" wood products that are not or only partly reused/recycled. Particle board waste which is contaminated with aminoplasts is one of these products. In addition, a considerable amount of aminoplast waste resinis produced for the production of particle board that cannot be ...
Activated carbon by co-pyrolysis and steam activation from particle board and melamine formaldehyde resin: production, adsorption properties and techno economic evaluation Hasselt University
One of the top strategic objectives and research areas in Europe is recovering wood from processing and end of life products. However, there are still several ‘contaminated’ wood products that are not or only partly reused/recycled. Particle board waste which is contaminated with aminoplasts is one of these products. In addition, a considerable amount of aminoplast waste resin is produced for the production of particle board that cannot be ...
Activated carbon from pyrolysis of brewer's spent grain: Production and adsorption properties Vrije Universiteit Brussel
Brewer’s spent grain is a low cost residue generated by the brewing industry. Its chemical composition (high nitrogen content 4.35 wt.%, fibres, etc.) makes it very useful for the production of added value in situ nitrogenised activated carbon. The composition of brewer’s spent grain revealed high amounts of cellulose (20.8 wt.%), hemicellulose (48.78 wt.%) and lignin (11.3 wt.%). The fat, ethanol extractives and ash accounted for 8.17 wt.%, 4.7 ...
Activated carbon from pyrolysis of brewer's spent grain: Production and adsorption properties Hasselt University
Brewer’s spent grain is a low cost residue generated by the brewing industry. Its chemical composition (high nitrogen content 4.35 wt.%, fibres, etc.) makes it very useful for the production of added value in situ nitrogenised activated carbon. The composition of brewer’s spent grain revealed high amounts of cellulose (20.8 wt.%), hemicellulose (48.78 wt.%) and lignin (11.3 wt.%). The fat, ethanol extractives and ash accounted for 8.17 wt.%, 4.7 ...