Biological testing of a digested sewage sludge and derived composts

Bioresource Technology
R MoreiraC Canhoto

Abstract

Aiming to evaluate a possible loss of soil habitat function after amendment with organic wastes, a digested sewage sludge and derived composts produced with green residues, where biologically tested in the laboratory using soil animals (Eisenia andrei and Folsomia candida) and plants (Brassica rapa and Avena sativa). Each waste was tested mimicking a field application of 6ton/ha or 12ton/ha. Avoidance tests did not reveal any impact of sludge and composts to soil biota. Germination and growth tests showed that application of composts were beneficial for both plants. Composts did not affect earthworm's mass increase or reproduction, but the highest sludge amendment revealed negative effects on both parameters. Only the amendment of composts at the highest dose originated an impairment of springtails reproductive output. We suggest that bioassays using different test species may be an additional tool to evaluate effects of amendment of organic wastes in soil. Biological tests are sensitive to pollutants at low concentrations and to interactions undetected by routine chemical analysis.

References

Sep 10, 2004·Annual Review of Entomology·Michelle T Fountain, Steve P Hopkin
Sep 24, 2004·Environmental Toxicology and Chemistry·Tiago Natal da LuzJosé Paulo Sousa

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Citations

Feb 6, 2014·Journal of Environmental Sciences (China)·Shengyong LuKefa Cen
Nov 16, 2010·Waste Management·Xavier DomenePilar Andrés
Apr 26, 2016·Journal of Hazardous Materials·Ana Paula MaccariOsmar Klauberg-Filho
Dec 9, 2014·Ecotoxicology and Environmental Safety·Pierre HuguierPascal Pandard
Sep 6, 2014·Environmental Technology·Antonio SerranoM Ángeles Martín
Jun 18, 2017·Environmental Geochemistry and Health·Tatiane Medeiros MeloJörg Rinklebe
Nov 22, 2018·Environmental Science and Pollution Research International·Amanda Gonçalves KielingMarcelo Oliveira Caetano
Mar 11, 2017·Journal of Hazardous Materials·Mathieu RenaudTiago Natal-da-Luz

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