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Browsing MÜHENDİSLİK FAKÜLTESİ by Author "Erdem, Mehmet"


Browsing MÜHENDİSLİK FAKÜLTESİ by Author "Erdem, Mehmet"

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  • A Study on dissolution properties of the sudges from Cr(VI) reduction-precipitation processes 
    Erdem, Mehmet; Tümen, Fikret (2004)
    In this article, dissolution characteristics of Cr(VI) reduction–precipitation sludges in the solutions containing mineral acids, organic complexing materials or both are examined. For this purpose, the effects of pH, ...
  • A study on the Cr(VI) removal from aqueous solutions by steel wool 
    Özer, Ahmet; Altundoğan, Hamdi Soner; Erdem, Mehmet; Tümen, Fikret (1997)
    The reduction of Cr(VI) by steel wool and the precipitation of reduced chromium by CaCO(3) powder and NaOH solution were investigated in continuous and batch systems, respectively. The effects of acid and initial Cr(VI) ...
  • Chromium removal from aqueous solution by the ferrite process 
    Erdem, Mehmet; Tümen, Fikret (2004)
    This research summarises the results of the study on the removal of chromium by applying the ferrite process to the solutions obtained from two different Cr(VI) reduction processes utilising sodium sulphite and ferrous ...
  • Cr(VI) Reduction in aqueous solutions by siderite 
    Erdem, Mehmet; Gür, Faruk; Tümen, Fikret (2004)
    Hexavalent chromium is a common and toxic pollutant in soils and wastewaters. Reduction of the mobile Cr(VI) to less mobile and less toxic Cr(III) is a solution for decontamination of industrial effluents. In this study, ...
  • Cr(VI) reduction in aqueous solutions by using copper smelter slag 
    Kıyak, Belgin; Özer, Ahmet; Altundoğan, Hamdi Soner; Erdem, Mehmet; Tümen, Fikret (1999)
    The ability of Copper Smelter Slag (CSS) to reduce Cr(VI) in aqueous solutions has been investigated. The extent of reduction is dependent on the amounts of acid and reductant, contact time, Cr(VI) concentration, temperature ...
  • Cr(VI) Reduction in aqueous solutions by using synthetic iron sulphide 
    Erdem, Mehmet; Altundoğan, Hamdi Soner; Özer, Ahmet; Tümen, Fikret (2001)
    This study was carried out to reduce Cr(VI) in aqueous solutions by using synthetic iron sulphide. For that purpose, the effects of acid content, contact time, initial Cr(VI) concentration, temperature of the solution, ...
  • Hexavalent chromium removal by ferrochromium slag 
    Erdem, Mehmet; Altundoğan, Hamdi Soner; Turan, Mehmet Deniz; Tümen, Fikret (2005)
    The aim of this study is to demonstrate the potential of Cr(VI) generation during jigging operation applied for ferrochrome recovery from slag. The Cr(VI) concentrations of water contacted with ferrochromium slag (W/FS = ...
  • Removal of hexavalent chromium by using heat-activated bauxite 
    Erdem, Mehmet; Altundoğan, Hamdi Soner; Tümen, Fikret (2004)
    In this study, to increase the Cr(VI) adsorption capacity of bauxite, heat treatment method was tested and the effects of pH, adsorbent dosage, contact time, initial Cr(VI) concentration and temperature on the adsorption ...
  • The removal of Cr(VI) from aqueous solutions using zinc extraction residue 
    Günaydın, Fatma; Özer, Ahmet; Altundoğan, Hamdi Soner; Erdem, Mehmet; Tümen, Fikret (1999)
    This study deals with the removal of Cr(VI) from aqueous solutions by using filter cake known as zinc extraction residue (ZER) generated as a by product in a zinc production plant located in Kayseri-TURKEY. It was found ...

University of Fırat
23119
Elazığ-Merkez
TURKEY