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Kinetic modelling of zinc liberation from zinc sulphide‐containing sludges in the viscose industry
Author(s) -
Hofmann Hanns,
Glöckl Steffen
Publication year - 1995
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270180407
Subject(s) - zinc , viscose , liberation , chemistry , chemical engineering , pulp and paper industry , waste management , materials science , metallurgy , polymer chemistry , engineering , in vitro , biochemistry
Large quantities of sludge containing considerable amounts of zinc are obtained on treatment of waste water from the production of viscose fibres for textiles and industrial applications. A process has been proposed [7, 10] for the recovery of zinc from one such sludge, in the first step of which zinc is transferred to the liquid phase with liberation of hydrogen sulphide. In connection with this work a model was developed which provides a kinetic description of zinc liberation from various sludges and the parameters of this model fitted to the measured data by means of linear regression.