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14 results on '"Forsgren, Christer"'

2. Lithium-Ion Batteries, How to Generate Value Out of End of Life Mobile Units

Author

Forsgren, Christer, Gaustad, Gabrielle, editor, Fleuriault, Camille, editor, Gökelma, Mertol, editor, Howarter, John A., editor, Kirchain, Randolph, editor, Ma, Kaka, editor, Meskers, Christina, editor, Neelameggham, Neale R., editor, Olivetti, Elsa, editor, Powell, Adam C., editor, Tesfaye, Fiseha, editor, Verhulst, Dirk, editor, and Zhang, Mingming, editor

Published
2019
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5. Recovery of titanium dioxide and other pigments from waste paint by pyrolysis

Author

Karlsson, Mikael C.F., Corr, Daniel, Forsgren, Christer, and Steenari, Britt-Marie

Subjects
Titanium dioxide -- Analysis -- Mechanical properties, Pyrolysis -- Analysis -- Mechanical properties, Recycling (Waste, etc.) -- Analysis -- United Kingdom, Metals, metalworking and machinery industries
Abstract

Abstract In this work, a model paint containing several types of inorganic pigments was pyrolyzed in a microwave-heated unit. The goal of the pyrolysis process was to recover and recycle [...]

Published
2015
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11. Recycling experiences from Scandinavia, focus on ash from waste incineration and plastics.

Author

Forsgren, Christer

Subjects
*INCINERATION, *MUNICIPAL solid waste incinerator residues, *PLASTIC scrap, *METAL recycling, *AIR pollution control, *FLUE gases
Abstract

Ash from waste incineration generated when cleaning flue gases contain about 40 w% of water soluble salts, most containing heavy metals like Pb. A method to use the acid scrubber liquid from the air pollution control system to neutralize the alkaline ash has been developed and a full scale demonstration plant is presently being built in Copenhagen, Denmark. The project has partly been financed by EU LIFE. The plant includes steps for metal recycling, mainly Cu and Zn, and removal of chlorides from the washed solid fraction that could be used for construction purposes. Stena Recycling International finance a Professorship in Industrial Material Recycling at Chalmers Technical University in Gothenburg Sweden since more than 10 years back, where most of the research in this area takes place. Not all thermoplastic waste fractions are clean enough to be mechanically recycled. Feed stock recycling, substitutional fuel and energy recovery are possible alternatives that have been evaluated and tested in Europe. Halogens are in general the biggest challenge since they produce corrosive acids when decomposing due to increased temperature. In a more Circular Economy materials are material recycled more often than today. No sorting equipment is 100 % correct why low concentrations of contaminants will be able to detect in many recycled materials. Bio test is one efficient method to prove that even though contaminants can be detected the bio availability could be very low. Gene response monitoring has successfully been applied. [ABSTRACT FROM AUTHOR]

Published
2019
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14. Investigations into Recycling Zinc from Used Metal Oxide Varistors via pH Selective Leaching: Characterization, Leaching, and Residue Analysis.

Author

Gutknecht T, Gustafsson A, Forsgren C, Ekberg C, and Steenari BM

Abstract

Metal oxide varistors (MOVs) are a type of resistor with significantly nonlinear current-voltage characteristics commonly used in power lines to protect against overvoltages. If a proper recycling plan is developed MOVs can be an excellent source of secondary zinc because they contain over 90 weight percent zinc oxide. The oxides of antimony, bismuth, and to a lesser degree cobalt, manganese, and nickel are also present in varistors. Characterization of the MOV showed that cobalt, nickel, and manganese were not present in the varistor material at concentrations greater than one weight percent. This investigation determined whether a pH selective dissolution (leaching) process can be utilized as a starting point for hydrometallurgical recycling of the zinc in MOVs. This investigation showed it was possible to selectively leach zinc from the MOV without coleaching of bismuth and antimony by selecting a suitable pH, mainly higher than 3 for acids investigated. It was not possible to leach zinc without coleaching of manganese, cobalt, and nickel. It can be concluded from results obtained with the acids used, acetic, hydrochloric, nitric, and sulfuric, that sulfate leaching produced the most desirable results with respect to zinc leaching and it is also used extensively in industrial zinc production.

Published
2015
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