Stabilization/solidification of hot dip galvanizing ash using different binders
| Autor: | Stepan Vinter, M.T. Montañés, Vratislav Bednarik, P. Hrivnova |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Environmental Engineering
Health Toxicology and Mutagenesis 0211 other engineering and technologies 02 engineering and technology 010501 environmental sciences Combustion 01 natural sciences INGENIERIA QUIMICA law.invention symbols.namesake law Environmental Chemistry Coal Leachate Stabilization/solidification: Leaching tests Waste Management and Disposal 0105 earth and related environmental sciences Pollutant Leaching tests [Stabilization/solidification] 021110 strategic defence & security studies Waste management business.industry Chemistry Pollution Galvanization Hot-dip galvanizing ash Portland cement Zinc Statistical analysis Fly ash symbols Leaching (metallurgy) business |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| Popis: | [EN] 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. (C) 2016 Elsevier B.V. All rights reserved. This work was supported by the Internal Grant Agency of Tomas Bata University in Zlin (project numbers IGA/FT/2015/012 and IGA/FT/2016/012). |
| Databáze: | OpenAIRE |
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