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Abtrennung und Rückgewinnung von Stoffen durch Adsorption und Ionenaustausch
Author(s) -
Cornel Peter
Publication year - 1991
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.330631003
Subject(s) - adsorption , chemistry , ion exchange , pickling , activated carbon , ion exchange resin , effluent , mercury (programming language) , chromate conversion coating , water treatment , inorganic chemistry , waste management , chromium , ion , organic chemistry , computer science , engineering , programming language
Separation and recovery of materials by adsorption and ion exchange. Activated carbons are capable of removing dissolved organics from waste water. They can be used in granular or powdered form, instead of, before, during, or after biological treatment or in water recirculation systems. Usually the adsorbed organics cannot be recovered. Granular activated carbon can be regenerated by thermal reactivation. The use of other adsorbents such as adsorption resins is limited to special cases. Ionic compounds can be removed by ion exchange media. The most common of these are synthetic ion exchange resins. They are used for the treatment of rinse water and pickling effluent. Gold, silver, copper, mercury, chromate, etc. can often be recovered. The degree of separation achieved and the amount of regenerant required – which should be minimized for ecological and economic reasons – depend on process parameters and design.