RT Journal Article
T1 Assessment of polluted soil remediation using bacterial community tolerance to heavy metals as an indicator
A1 Campillo Cora, Claudia
A1 Soto Gómez, Diego
A1 Arias Estévez, Manuel
A1 Fernández Calviño, David
K1 2511.04 Química de Suelos
K1 2303.18 Metales
K1 3308 Ingeniería y Tecnología del Medio Ambiente
AB The assessment of remediation on metal-polluted soils is usually focused on total and/or bioavailable metal content. However, these chemical variables do not provide direct information about reductions in heavy metals pressure on soil microorganisms. We propose the use of bacterial communities to evaluate the efficiency of three remediation techniques: crushed mussel shell (CMS) and pine bark (PB) as soil amendments and EDTA-washing. A soil sample was polluted with different doses of Cu, Ni, and Zn (separately). After 30 days of incubation, the remediation techniques were applied, and bacterial community tolerance to heavy metals determined. If bacterial communities develop tolerance, it is an indicator that the metal is exerting toxicity on them. Soil bacterial communities developed tolerance to Cu, Ni, and Zn in response to metal additions. After remediation, bacterial communities showed decreases in bacterial community tolerance to Cu, Ni, and Zn for all remediation techniques. For Cu and Ni, soil EDTA-washing showed the greatest reduction of bacterial community tolerance to Cu and Ni, respectively, while for Zn the soil amendment with PB was the most effective remediation technique. Thus, bacterial community tolerance to heavy metals successfully detect differences in the effectiveness of the three remediation techniques.
PB Agronomy
SN 20734395
YR 2022
FD 2022-09-23
LK http://hdl.handle.net/11093/3896
UL http://hdl.handle.net/11093/3896
LA eng
NO Agronomy, 12(10): 2280 (2022)
NO Ministerio de Economía y Competitividad | Ref. CTM2015-73422-JIN
DS Investigo
RD 19-ene-2025