Heavy Metal Content in Sewage Sludge: A Management Strategy for an Ocean Island
Vol. 17 No. 1 (2017), Originals
Vol. 17 No. 1 (2017)

Heavy Metal Content in Sewage Sludge: A Management Strategy for an Ocean Island

Originals
Published 2017-06-15
Cintia Hernández Sánchez
Universidad de La Laguna
http://orcid.org/0000-0002-6374-6817
Ángel Gutiérrez
Juan Manuel Galindo
Dailos González-Weller
Carmen Rubio
Consuelo Revert
Antonio Burgos
Arturo Hardisson
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Keywords

heavy metals
oceanic island
sewage-sludge
waste-management

How to Cite

Hernández Sánchez, C., Gutiérrez, Ángel, Galindo, J. M., González-Weller, D., Rubio, C., Revert, C., Burgos, A., & Hardisson, A. (2017). Heavy Metal Content in Sewage Sludge: A Management Strategy for an Ocean Island. Spanish Journal of Environmental Health, 17(1), 3–9. Retrieved from https://www.ojs.diffundit.com/index.php/rsa/article/view/758
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Abstract

In recent years, the generation of sewage sludge has increased worldwide. Correct processing and management of this waste concerns all countries. This work presents a study of metal contents, i.e. of Cd, Pb, Zn, Cr, Cu, and Ni, in sewage sludge from a wastewater treatment plant in the northeastern region of the island of Tenerife. The study aimed at examining the sludge for potential suitability as a farmland fertilizer. Detected metal levels for Pb, Zn, Cr, Cu, and Ni were extremely low (26.44, 544.01, 24.10, 37.05, and 8.04 mg/kg dw [dry weight], respectively). Cadmium levels were under quanti cation limit. Season-dependent, statistically significant differences (p < 0.05) in metal concentrations in sewage sludge were observed for Cu, Ni, Cr, and Pb. Consequently, the application of sewage sludge to fertilize nutrient-deficient agricultural soils and soils degraded by human activity represents a fast and straightforward solution to the lack of such resources, particularly in an oceanic island.
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