Search Results

You are looking at 1 - 3 of 3 items for

  • Author or Editor: T. Tomor x
  • Refine by Access: All Content x
Clear All Modify Search

One of the largest industrial disasters in Europe took place in the village of Kolontár (Hungary) on October 4th, 2010. Due to a ruptured dam more than 1 million m3 of red sludge flooded the nearby small towns along the Torna river. The spilled material containing a highly alkaline solution (>12 pH) resulted in a complex environmental disaster, requiring a multi-disciplinary approach regarding the assessment and the remediation of the site.The Károly Róbert College has developed a remote sensing protocol, which greatly assists both the domestic and international disaster management (forecast, damage surveying and control). In case of the Hungarian red sludge disaster the primary objective of the hyperspectral remote sensing mission was to estimate the environmental damage, the precise size of the polluted area, the rating of substance concentration in the sludge. For quick assessment and remediation purposes, it was deemed important to estimate the thickness of the red mud, particularly the areas where it was deposited in a thick layer. The results showed that some of the existing tools can be easily modified and implemented to get the most out of the available advanced remote sensing data.

Restricted access

Abstract

The objective of this study was to examine the possible formation of chlorinated organic compounds during the combustion of blends of refuse derived fuels (RDF) and coal under conditions similar to those of an atmospheric fluidized bed combustion (AFBC) system. A series of experiments were conducted using a TG interfaced to FTIR. Additional experiments using a tube furnace preheated to AFBC operating temperatures were also conducted. The combustion products were cryogenically trapped and analyzed with a GC/MS system. The chlorination of phenols and the condensation reactions of chlorophenols were investigated in this study. A possible mechanism for the formation of chlorinated organic compounds such as dibenzodioxins and dibenzofurans, by chlorination and condensation reactions involving phenols, was proposed.

Restricted access

Abstract  

Montmorillonite-supported iron(III) nitrate and copper(II) nitrate reagents, and other supported metal nitrates prepared in the same way, were investigated by thermal and X-ray powder diffraction methods. The metal nitrates are present on the support in the form of crystalline hydrate and not as acetone solvate as supposed earlier. Thermal decomposition of metal nitrates that are active in model reactions proceeds in a different way from that of the practically inactive nitrates. In the former case, water release and nitrate decomposition itself are simultaneous process. These and other results contributed to determination of suitable reaction conditions for the montmorillonite-supported reagents.

Restricted access