Precursors of volatile organic compounds emitted during phosphorite processing

• Authors: Agata Śliwak , Stanisław Gryglewicz , Józef Hoffmann , Grażyna Gryglewicz
• Languages of publication: EN

Abstracts

EN

The composition of solvent-soluble organic matter of phosphorite, which is a precursor of volatile organic compounds emitted by the fertilizer industry, was studied. A benzene-methanol mixture and chloroform were used for the extraction of free and bound bitumen from phosphorites, respectively. The separated bitumen fractions were characterized qualitatively by GC-MS and quantitatively by GC-FID. n-Alkanes, n-alkenes, fatty acids and isoprenoids were identified in the extracts. The main components were n-alkanes and n-alkenes, constituting over 80% of the total bitumen determined. An unexpected presence of n-alkenes only in the free bitumen fraction was found. The possible source of ill-smelling substances evolved during treatment of phosphorite with H2SO4 was discussed.

Keywords

EN

phosphorites; bitumen; composition; odours

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2012
• Volume: 14
• Issue: 2
• Pages: 62-69

Dates

published

1 - 1 - 2012

online

2 - 7 - 2012

Contributors

author

Agata Śliwak

• Faculty of Chemistry, Department of Polymer and Carbonaceous Materials, Wrocław University of Technology, ul Gdańska 7/9, 50-344 Wrocław, Poland

author

Stanisław Gryglewicz

• Faculty of Chemistry, Department of Polymer and Carbonaceous Materials, Wrocław University of Technology, ul Gdańska 7/9, 50-344 Wrocław, Poland

author

Józef Hoffmann

• Faculty of Chemistry, Institute of Inorganic Technology and Mineral Fertilizers, Wrocław University of Technology, ul. Smolu-chowskiego 25, 50-370 Wrocław, Poland

author

Grażyna Gryglewicz

• Faculty of Chemistry, Department of Polymer and Carbonaceous Materials, Wrocław University of Technology, ul Gdańska 7/9, 50-344 Wrocław, Poland

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Identifiers

DOI

10.2478/v10026-012-0072-7