Nutrients and heavy metals distribution in thermally treated pig manure

Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA
Ksawery KuligowskiJens Laursen

Abstract

Ash from pig manure treated by combustion and thermal gasification was characterized and compared in terms of nutrient, i.e., potassium (K), phosphorus (P) and heavy metal, i.e., cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni) and zinc (Zn) contents. Total nutrient and metal concentrations were measured using energy dispersive X-ray fluorescence analysis. Acid (HNO3, H2SO4) and water-extractable concentrations were also measured both in non-classified ash and in selected ash particle size fractions using flame atomic absorption spectrometry and colorimetric spectrometry. Results indicate that ash from gasified manure contained more water-extractable K in comparison with combusted manure whereas the opposite was the case with respect to P. Heavy metals Ni, Cr and Cd were present in higher concentrations in the fine particle size fractions (< 30 microm of particle diameter), whereas K, P, Zn and Cu exhibited higher concentrations in the coarser particle size fractions (> 30 microm).

References

Aug 1, 1988·The Science of the Total Environment·D el-MogaziL H Weinstein
Jun 13, 2002·Bioresource Technology·B P KelleherM J Leahy
May 8, 2003·Environmental Monitoring and Assessment·John C Buckley, Peter M Schwarz
Sep 24, 2004·Waste Management·G F HuangB B Nagar

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Citations

Jan 1, 2014·Archives of Environmental Contamination and Toxicology·Jordi ComasJosep M Bayona
May 12, 2009·Waste Management·Ksawery Kuligowski, Tjalfe Gorm Poulsen
Oct 14, 2017·Environmental Geochemistry and Health·Lanjun WangJun Wang

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