<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">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. <italic>n</italic>-Alkanes, <italic>n</italic>-alkenes, fatty acids and isoprenoids were identified in the extracts. The main components were n-alkanes and <italic>n</italic>-alkenes, constituting over 80% of the total bitumen determined. An unexpected presence of <italic>n</italic>-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.</abstract>

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.

Precursors of volatile organic compounds emitted during phosphorite processing

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

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

Polish Journal of Chemical Technology

{"article-title":"Precursors of volatile organic compounds emitted during phosphorite processing"}

The composition of solvent-soluble organic matter of phosphorite, which is a precursor of volatile organic compounds emitted by the fertilizer industry, was...

Precursors of volatile organic compounds emitted during phosphorite processing

Pubblicato online: 02 lug 2012

Pagine: 62 - 69

DOI: https://doi.org/10.2478/v10026-012-0072-7

Parole chiave
phosphorites, bitumen, composition, odours

This content is open access.

Precursors of volatile organic compounds emitted during phosphorite processing

Pubblicato online: 02 lug 2012

Pagine: 62 - 69

DOI: https://doi.org/10.2478/v10026-012-0072-7

Parole chiavephosphorites, bitumen, composition, odours

This content is open access.

Parole chiave
phosphorites, bitumen, composition, odours