title: Stabilization/solidification of hot dip galvanizing ash using different binders.
abstract: This study focuses on solidification of hot dip-galvanizing ash with a high content of zinc and soluble substances. The main purpose of this paper is to immobilize these pollutants into a matrix and allow a safer way for landfill disposal of that waste. Three different binders (Portland cement, fly ash and coal fluidized-bed combustion ash) were used for the waste solidification. Effectiveness of the process was evaluated using leaching test according to EN 12457-4 and by using the variance analysis and the categorical multifactorial test. In the leaching test, four parameters were observed: pH, zinc concentration in leachate, and concentration of chlorides and dissolved substances in leachate. The acquired data was then processed using statistical software to find an optimal solidifying ratio of the addition of binder, water, and waste to the mixture, with the aim to fulfil the requirement for landfill disposal set by the Council Decision 2003/33/EC. The influence on the main observed parameters (relative amount of water and a binder) on the effectiveness of the used method and their influence of measured parameters was also studied.
authors: Department of Environment Protection Engineering, Tomas Bata University in Zlin, Faculty of Technology, Vavreckova 275, 760 01, Zlin, Czech Republic.
authors: S
authors: S
authors: Vinter
authors: Ingeniería Electroquímica y Corrosión. Departamento de Ingeniería Química y Nuclear. Universitat Politécnica de Valencia (Polytechnic University of Valencia), Camino de Vera s/n, 46022, Valencia, Spain. Electronic address: tmontane@iqn.upv.es.
authors: M T
authors: MT
authors: Montanes
authors: Department of Environment Protection Engineering, Tomas Bata University in Zlin, Faculty of Technology, Vavreckova 275, 760 01, Zlin, Czech Republic. Electronic address: bednarik@ft.utb.cz.
authors: V
authors: V
authors: Bednarik
authors: Department of Environment Protection Engineering, Tomas Bata University in Zlin, Faculty of Technology, Vavreckova 275, 760 01, Zlin, Czech Republic.
authors: P
authors: P
authors: Hrivnova
keywords: Hot-dip galvanizing ash; Leaching tests; Stabilization/solidification; Statistical analysis; Zinc