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Record nummer 1936291
Titel artikel On-line estimation of the dissolved zinc concentration during ZnS precipitation in a continuous stirred tank reactor (CSTR)
Auteur(s) Grootscholten, T.I.M. ; Keesman, K.J. ; Lens, P.N.L.
Tijdschrifttitel Water science and technology : a journal of the International Association on Water Pollution Research
Deel(Jaar)Nummer 57(2008)10
Paginering 1627 - 1633
Online full text
Trefwoorden (cab) oppervlaktewater / afvalwaterbehandeling / zware metalen / zink / chemische precipitatie / verwijdering / sulfiden / selectiviteit / waterzuivering
Rubrieken Afvalwaterbehandeling
Publicatie type Artikel
Taal Engels
Toelichting (Engels) Numerous treatment technologies are available for the removal of heavy metals from natural waters and wastewaters, but most of them produce concentrated sludges that cannot be used in agriculture and need to be stored in controlled hazardous waste disposal sites. There is a need for new technologies that allow the recovery and reuse of the metals. In this paper a method is presented to estimate the reaction term of zinc sulphide precipitation and the zinc concentration in a continuous stirred tank reactor, using the read-out signal of a sulphide selective electrode. The reaction between zinc and sulphide is described by a non-linear model and therefore classical observer theory cannot be applied directly, as this theory was initially developed for linear systems.
Betrokken instanties WUR, Sectie Milieutechnologie
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