SORPTION ISOTHERM OF PHOSPHORUS POWDER COLLECTED IN EXHAUST TREATMENT SYSTEM OF STEEL INDUSTRY

Authors

  • Antonio Teixeira de Matos
  • André M. Costa Neto
  • Marcio Arêdes Martins
  • Mateus Pimentel de Matos

DOI:

https://doi.org/10.13083/reveng.v20i3.242

Keywords:

resíduos sólidos, reciclagem, remoção de fósforo, fosfatos.

Abstract

The dust collected in the exhaust treatment system of blast furnace has disposal problems due to large quantities and potential environmental pollution. This study was done to determine the physical, chemical and mineralogical characteristics of the dust collected in the balloon used to treat the exhaust from the blast furnace of a steel plant and assess its ability to adsorb phosphorus to determine the adsorption isotherm that best fit the data. The total concentration of Cd, Cr, Cu, Mn, Ni, Pb, Zn, Fe, Al, Mg, Ca, K and P was determined using atomic absorption spectrophotometry after nitric-perchloric digestion of the sample. The mineralogical analysis was done with the help of a X-ray diffractometer. The residue predominantly consisted of hematite and magnetite containing high levels of Fe, Ca, Cr and Mg, and had high pH, and high phosphorus adsorption capacity. The Langmuir and Freundlich models fitted the data reasonably well to represent the adsorption isotherm.

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Published

2012-07-01

How to Cite

Matos, A. T. de, Costa Neto, A. M., Martins, M. A., & Matos, M. P. de. (2012). SORPTION ISOTHERM OF PHOSPHORUS POWDER COLLECTED IN EXHAUST TREATMENT SYSTEM OF STEEL INDUSTRY. Engineering in Agriculture, 20(3), 258–264. https://doi.org/10.13083/reveng.v20i3.242

Issue

Vol. 20 No. 3 (2012)

Section

Water and environmental resources

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