RT info:eu-repo/semantics/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 Metal pollution
K1 Soil bioremediation
K1 Risk assessment
K1 Bacterial growth
K1 Pollution-Induced Community Tolerance (PICT)
K1 Bio-sorbents
K1 Soil washing
K1 Edafología
K1 Soil science
K1 Química agrícola
K1 Agricultural chemistry
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 MDPI
SN 2073-4395
YR 2022
FD 2022-09
LK https://hdl.handle.net/10259/11129
UL https://hdl.handle.net/10259/11129
LA eng
NO This study has been funded by the Spanish Ministry of Economy and Competitiveness through the project CTM2015-73422-JIN (FEDER Funds) David Fernández Calviño holds a Ramón y Cajal contract (RYC-2016-20411) financed by the Spanish Ministry of Economy, Industry and Competitiveness. Diego Soto-Gómez has a post-doctoral contract “Margarita Salas” funded by European Union—NextGenerationEU, and a Seneca Foundation grant for research stays in international centres (21525/EE/21). Claudia Campillo-Cora holds a predoctoral fellowship with Xunta de Galicia (ED401A-2020/084) funded by Consellería de Educación, Universidade e Formación Profesional.
DS Repositorio Institucional de la Universidad de Burgos
RD 19-abr-2026