Assessment of biochar and zero-valent iron for in-situ remediation of chromated copper arsenate contaminated soil

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Assessment of biochar and zero-valent iron for in-situ remediation of chromated copper arsenate contaminated soil. / Frick, Hanna; Tardif, Stacie; Kandeler, Ellen; Holm, Peter E.; Brandt, Kristian K.

I: Science of the Total Environment, Bind 655, 10.03.2019, s. 414-422.

Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

Harvard

Frick, H, Tardif, S, Kandeler, E, Holm, PE & Brandt, KK 2019, 'Assessment of biochar and zero-valent iron for in-situ remediation of chromated copper arsenate contaminated soil', Science of the Total Environment, bind 655, s. 414-422. https://doi.org/10.1016/j.scitotenv.2018.11.193

APA

Frick, H., Tardif, S., Kandeler, E., Holm, P. E., & Brandt, K. K. (2019). Assessment of biochar and zero-valent iron for in-situ remediation of chromated copper arsenate contaminated soil. Science of the Total Environment, 655, 414-422. https://doi.org/10.1016/j.scitotenv.2018.11.193

Vancouver

Frick H, Tardif S, Kandeler E, Holm PE, Brandt KK. Assessment of biochar and zero-valent iron for in-situ remediation of chromated copper arsenate contaminated soil. Science of the Total Environment. 2019 mar. 10;655:414-422. https://doi.org/10.1016/j.scitotenv.2018.11.193

Author

Frick, Hanna ; Tardif, Stacie ; Kandeler, Ellen ; Holm, Peter E. ; Brandt, Kristian K. / Assessment of biochar and zero-valent iron for in-situ remediation of chromated copper arsenate contaminated soil. I: Science of the Total Environment. 2019 ; Bind 655. s. 414-422.

Bibtex

@article{869ad409689143beb6349361946c8d62,
title = "Assessment of biochar and zero-valent iron for in-situ remediation of chromated copper arsenate contaminated soil",
abstract = "Chromated copper arsenates (CCA) have been extensively used as wood impregnation agents in Europe and North America. Today, CCA contaminated sites remain abundant and pose environmental risks that need to be properly managed. Using a TRIAD approach that combined chemical, ecotoxicological and ecological assessment of soil quality, we investigated the abilities of biochar and zero-valent iron (ZVI) to remediate CCA contaminated soil in a microcosm experiment. Soil samples from a highly contaminated CCA site (1364, 1662 and 540 μg g−1 of As, Cu and Cr, respectively) were treated with two different biochars (fine and coarse particle size; 1% w w−1) and ZVI (5% w w−1), both as sole and as combined treatments, and incubated for 56 days at 15 °C. In general, bioavailable As (Asbio) and Cu (Cubio) determined by whole-cell bacterial bioreporters corresponded well to water-extractable As and Cu (Aswater and Cuwater). However, in biochar treatments, only Cubio and not Cuwater was significantly reduced. In contrast, under ZVI treatments only Cuwater and not Cubio was reduced, demonstrating the value of complementing analytical with bacterial bioreporter measurements to infer bioavailability of elements to soil microorganisms. The combined fine particle size biochar and ZVI treatment effectively reduced water extractable concentrations of Cr, Cu, and As on site by 45%, 45% and 43% respectively, and led to the highest ecological recovery of the soil bacterial community, as measured using the [3H]leucine incorporation technique. We conclude that the combined application of biochar and ZVI as soil amendments holds promise for in-situ stabilization of CCA contaminated sites.",
keywords = "Bioavailability, Biochar, Metal-contaminated soils, Soil remediation, Whole-cell biosensors, Zero-valent iron",
author = "Hanna Frick and Stacie Tardif and Ellen Kandeler and Holm, {Peter E.} and Brandt, {Kristian K.}",
year = "2019",
month = mar,
day = "10",
doi = "10.1016/j.scitotenv.2018.11.193",
language = "English",
volume = "655",
pages = "414--422",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Assessment of biochar and zero-valent iron for in-situ remediation of chromated copper arsenate contaminated soil

AU - Frick, Hanna

AU - Tardif, Stacie

AU - Kandeler, Ellen

AU - Holm, Peter E.

AU - Brandt, Kristian K.

PY - 2019/3/10

Y1 - 2019/3/10

N2 - Chromated copper arsenates (CCA) have been extensively used as wood impregnation agents in Europe and North America. Today, CCA contaminated sites remain abundant and pose environmental risks that need to be properly managed. Using a TRIAD approach that combined chemical, ecotoxicological and ecological assessment of soil quality, we investigated the abilities of biochar and zero-valent iron (ZVI) to remediate CCA contaminated soil in a microcosm experiment. Soil samples from a highly contaminated CCA site (1364, 1662 and 540 μg g−1 of As, Cu and Cr, respectively) were treated with two different biochars (fine and coarse particle size; 1% w w−1) and ZVI (5% w w−1), both as sole and as combined treatments, and incubated for 56 days at 15 °C. In general, bioavailable As (Asbio) and Cu (Cubio) determined by whole-cell bacterial bioreporters corresponded well to water-extractable As and Cu (Aswater and Cuwater). However, in biochar treatments, only Cubio and not Cuwater was significantly reduced. In contrast, under ZVI treatments only Cuwater and not Cubio was reduced, demonstrating the value of complementing analytical with bacterial bioreporter measurements to infer bioavailability of elements to soil microorganisms. The combined fine particle size biochar and ZVI treatment effectively reduced water extractable concentrations of Cr, Cu, and As on site by 45%, 45% and 43% respectively, and led to the highest ecological recovery of the soil bacterial community, as measured using the [3H]leucine incorporation technique. We conclude that the combined application of biochar and ZVI as soil amendments holds promise for in-situ stabilization of CCA contaminated sites.

AB - Chromated copper arsenates (CCA) have been extensively used as wood impregnation agents in Europe and North America. Today, CCA contaminated sites remain abundant and pose environmental risks that need to be properly managed. Using a TRIAD approach that combined chemical, ecotoxicological and ecological assessment of soil quality, we investigated the abilities of biochar and zero-valent iron (ZVI) to remediate CCA contaminated soil in a microcosm experiment. Soil samples from a highly contaminated CCA site (1364, 1662 and 540 μg g−1 of As, Cu and Cr, respectively) were treated with two different biochars (fine and coarse particle size; 1% w w−1) and ZVI (5% w w−1), both as sole and as combined treatments, and incubated for 56 days at 15 °C. In general, bioavailable As (Asbio) and Cu (Cubio) determined by whole-cell bacterial bioreporters corresponded well to water-extractable As and Cu (Aswater and Cuwater). However, in biochar treatments, only Cubio and not Cuwater was significantly reduced. In contrast, under ZVI treatments only Cuwater and not Cubio was reduced, demonstrating the value of complementing analytical with bacterial bioreporter measurements to infer bioavailability of elements to soil microorganisms. The combined fine particle size biochar and ZVI treatment effectively reduced water extractable concentrations of Cr, Cu, and As on site by 45%, 45% and 43% respectively, and led to the highest ecological recovery of the soil bacterial community, as measured using the [3H]leucine incorporation technique. We conclude that the combined application of biochar and ZVI as soil amendments holds promise for in-situ stabilization of CCA contaminated sites.

KW - Bioavailability

KW - Biochar

KW - Metal-contaminated soils

KW - Soil remediation

KW - Whole-cell biosensors

KW - Zero-valent iron

UR - http://www.scopus.com/inward/record.url?scp=85056884761&partnerID=8YFLogxK

U2 - 10.1016/j.scitotenv.2018.11.193

DO - 10.1016/j.scitotenv.2018.11.193

M3 - Journal article

C2 - 30472643

AN - SCOPUS:85056884761

VL - 655

SP - 414

EP - 422

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

ER -

ID: 213663764