Title: Removal of Selenium from FGD Water Streams by a Non-Conventional Absorbent By-Product

The use of FGD-gypsum as material for selenium removal from re-circulated waters at a coal-fired power plant equipped with a wet limestone flue gas desulphurisation (FGD) system with use of an Al-additive (to boost the desulphurisation efficiency), has been evaluated by adsorption studies. Potentiometic titration experiments for FGD-gypsum samples, based on the point zero of aqero change (pHpzc) and the potenciometric curves indicate that at pH lower than 7.5 the FGD-gypsum surface is positively charged. This points out that the adsorption of Se in the FGD-gypsum is governed by the protonation of th FGD-gypsum surface. The protonation fo the FGD-gypsum may be attributed to the use of the Al-additive.

Click Here For Complete Article Text

 

   Person Information

  •     Ayora, Carlos  -  Institute of Environmental Assessment and Water Research

  •     Cordoba Cordoba, Patricia  -  Institute of Environmental Assessment and Water Research

  •     Gonzalez, Aixa  -  University of the La Frontera

  •     Gonzalez, Maria  -  University of the La Frontera

  •     Moreno, N.  -  Institute of Environmental Assessment and Water Research

  •     Navia, Rodrigo  -  University of the La Frontera

  •     Querol, Xavier  -  Institute of Environmental Assessment and Water Research

  •     Sepulveda, Noelia  -  University of the La Frontera
   Application Sequencing
Company  Product  Process  Other  Subjects  Event  Event  Date  Location  Publication  Publication  Date Text  Descriptor

  • Institute of Environmental Assessment and Water Research

  • University of the La Frontera

  • FGD- gypsum

  • Sorbent

 

  • Wastewater

 

 

 

 

 

  • Article