Bioturbation of Ag2S-NPs in soil columns by earthworms

Marta Baccaro, Samuel Harrison, Hans van den Berg, Laura Sloot, Davy Hermans, Geert Cornelis, Cornelis A.M. van Gestel, Nico W. van den Brink

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Sewage sludge contains Ag2S-NPs causing NP exposure of soil fauna when sludge is applied as soil amendment. Earthworm bioturbation is an important process affecting many soil functions. Bioturbation may be affected by the presence of Ag2S-NPs, but the earthworm activity itself may also influence the displacement of these NPs that otherwise show little transport in the soil. The aim of this study was to determine effects of Ag2S-NPs on earthworm bioturbation and effect of this bioturbation on the vertical distribution of Ag2S-NPs. Columns (12 cm) of a sandy loamy soil with and without Lumbricus rubellus were prepared with and without 10 mg Ag kg−1, applied as Ag2S-NPs in the top 2 cm of the soil, while artificial rainwater was applied at ∼1.2 mm day−1. The soil columns were sampled at three depths weekly for 28 days and leachate collected from the bottom. Total Ag measurements showed more displacement of Ag to deeper soil layers in the columns with earthworms. The application of rain only did not significantly affect Ag transport in the soil. No Ag was detected in column leachates. X-ray tomography showed that changes in macro porosity and pore size distribution as a result of bioturbation were not different between columns with and without Ag2S-NPs. Earthworm activity was therefore not affected by Ag2S-NPs at the used exposure concentration. Ag concentrations along the columns and the earthworm density allowed the calculation of the bioturbation rate. The effect on the Ag transport in the soil shows that earthworm burrowing activity is a relevant process that must be taken into account when studying the fate of nanoparticles in soils.

Original languageEnglish
Pages (from-to)155-162
Number of pages8
JournalEnvironmental Pollution
Volume252
Early online date22 May 2019
DOIs
Publication statusPublished - Sep 2019

Fingerprint

Oligochaeta
Soil
Soils
Sewage
X Ray Tomography
Rain
Porosity
Sewage sludge
Nanoparticles
Pore size
Tomography
Macros

Keywords

  • Bioturbation
  • Earthworms
  • Nanoparticles
  • Soil
  • Transport

Cite this

Baccaro, M., Harrison, S., van den Berg, H., Sloot, L., Hermans, D., Cornelis, G., ... van den Brink, N. W. (2019). Bioturbation of Ag2S-NPs in soil columns by earthworms. Environmental Pollution, 252, 155-162. https://doi.org/10.1016/j.envpol.2019.05.106
Baccaro, Marta ; Harrison, Samuel ; van den Berg, Hans ; Sloot, Laura ; Hermans, Davy ; Cornelis, Geert ; van Gestel, Cornelis A.M. ; van den Brink, Nico W. / Bioturbation of Ag2S-NPs in soil columns by earthworms. In: Environmental Pollution. 2019 ; Vol. 252. pp. 155-162.
@article{edbc1a898fbf4199b260f89821573d89,
title = "Bioturbation of Ag2S-NPs in soil columns by earthworms",
abstract = "Sewage sludge contains Ag2S-NPs causing NP exposure of soil fauna when sludge is applied as soil amendment. Earthworm bioturbation is an important process affecting many soil functions. Bioturbation may be affected by the presence of Ag2S-NPs, but the earthworm activity itself may also influence the displacement of these NPs that otherwise show little transport in the soil. The aim of this study was to determine effects of Ag2S-NPs on earthworm bioturbation and effect of this bioturbation on the vertical distribution of Ag2S-NPs. Columns (12 cm) of a sandy loamy soil with and without Lumbricus rubellus were prepared with and without 10 mg Ag kg−1, applied as Ag2S-NPs in the top 2 cm of the soil, while artificial rainwater was applied at ∼1.2 mm day−1. The soil columns were sampled at three depths weekly for 28 days and leachate collected from the bottom. Total Ag measurements showed more displacement of Ag to deeper soil layers in the columns with earthworms. The application of rain only did not significantly affect Ag transport in the soil. No Ag was detected in column leachates. X-ray tomography showed that changes in macro porosity and pore size distribution as a result of bioturbation were not different between columns with and without Ag2S-NPs. Earthworm activity was therefore not affected by Ag2S-NPs at the used exposure concentration. Ag concentrations along the columns and the earthworm density allowed the calculation of the bioturbation rate. The effect on the Ag transport in the soil shows that earthworm burrowing activity is a relevant process that must be taken into account when studying the fate of nanoparticles in soils.",
keywords = "Bioturbation, Earthworms, Nanoparticles, Soil, Transport",
author = "Marta Baccaro and Samuel Harrison and {van den Berg}, Hans and Laura Sloot and Davy Hermans and Geert Cornelis and {van Gestel}, {Cornelis A.M.} and {van den Brink}, {Nico W.}",
year = "2019",
month = "9",
doi = "10.1016/j.envpol.2019.05.106",
language = "English",
volume = "252",
pages = "155--162",
journal = "Environmental Pollution",
issn = "0269-7491",
publisher = "Elsevier Limited",

}

Baccaro, M, Harrison, S, van den Berg, H, Sloot, L, Hermans, D, Cornelis, G, van Gestel, CAM & van den Brink, NW 2019, 'Bioturbation of Ag2S-NPs in soil columns by earthworms' Environmental Pollution, vol. 252, pp. 155-162. https://doi.org/10.1016/j.envpol.2019.05.106

Bioturbation of Ag2S-NPs in soil columns by earthworms. / Baccaro, Marta; Harrison, Samuel; van den Berg, Hans; Sloot, Laura; Hermans, Davy; Cornelis, Geert; van Gestel, Cornelis A.M.; van den Brink, Nico W.

In: Environmental Pollution, Vol. 252, 09.2019, p. 155-162.

Research output: Contribution to JournalArticleAcademicpeer-review

TY - JOUR

T1 - Bioturbation of Ag2S-NPs in soil columns by earthworms

AU - Baccaro, Marta

AU - Harrison, Samuel

AU - van den Berg, Hans

AU - Sloot, Laura

AU - Hermans, Davy

AU - Cornelis, Geert

AU - van Gestel, Cornelis A.M.

AU - van den Brink, Nico W.

PY - 2019/9

Y1 - 2019/9

N2 - Sewage sludge contains Ag2S-NPs causing NP exposure of soil fauna when sludge is applied as soil amendment. Earthworm bioturbation is an important process affecting many soil functions. Bioturbation may be affected by the presence of Ag2S-NPs, but the earthworm activity itself may also influence the displacement of these NPs that otherwise show little transport in the soil. The aim of this study was to determine effects of Ag2S-NPs on earthworm bioturbation and effect of this bioturbation on the vertical distribution of Ag2S-NPs. Columns (12 cm) of a sandy loamy soil with and without Lumbricus rubellus were prepared with and without 10 mg Ag kg−1, applied as Ag2S-NPs in the top 2 cm of the soil, while artificial rainwater was applied at ∼1.2 mm day−1. The soil columns were sampled at three depths weekly for 28 days and leachate collected from the bottom. Total Ag measurements showed more displacement of Ag to deeper soil layers in the columns with earthworms. The application of rain only did not significantly affect Ag transport in the soil. No Ag was detected in column leachates. X-ray tomography showed that changes in macro porosity and pore size distribution as a result of bioturbation were not different between columns with and without Ag2S-NPs. Earthworm activity was therefore not affected by Ag2S-NPs at the used exposure concentration. Ag concentrations along the columns and the earthworm density allowed the calculation of the bioturbation rate. The effect on the Ag transport in the soil shows that earthworm burrowing activity is a relevant process that must be taken into account when studying the fate of nanoparticles in soils.

AB - Sewage sludge contains Ag2S-NPs causing NP exposure of soil fauna when sludge is applied as soil amendment. Earthworm bioturbation is an important process affecting many soil functions. Bioturbation may be affected by the presence of Ag2S-NPs, but the earthworm activity itself may also influence the displacement of these NPs that otherwise show little transport in the soil. The aim of this study was to determine effects of Ag2S-NPs on earthworm bioturbation and effect of this bioturbation on the vertical distribution of Ag2S-NPs. Columns (12 cm) of a sandy loamy soil with and without Lumbricus rubellus were prepared with and without 10 mg Ag kg−1, applied as Ag2S-NPs in the top 2 cm of the soil, while artificial rainwater was applied at ∼1.2 mm day−1. The soil columns were sampled at three depths weekly for 28 days and leachate collected from the bottom. Total Ag measurements showed more displacement of Ag to deeper soil layers in the columns with earthworms. The application of rain only did not significantly affect Ag transport in the soil. No Ag was detected in column leachates. X-ray tomography showed that changes in macro porosity and pore size distribution as a result of bioturbation were not different between columns with and without Ag2S-NPs. Earthworm activity was therefore not affected by Ag2S-NPs at the used exposure concentration. Ag concentrations along the columns and the earthworm density allowed the calculation of the bioturbation rate. The effect on the Ag transport in the soil shows that earthworm burrowing activity is a relevant process that must be taken into account when studying the fate of nanoparticles in soils.

KW - Bioturbation

KW - Earthworms

KW - Nanoparticles

KW - Soil

KW - Transport

UR - http://www.scopus.com/inward/record.url?scp=85066141810&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85066141810&partnerID=8YFLogxK

U2 - 10.1016/j.envpol.2019.05.106

DO - 10.1016/j.envpol.2019.05.106

M3 - Article

VL - 252

SP - 155

EP - 162

JO - Environmental Pollution

JF - Environmental Pollution

SN - 0269-7491

ER -

Baccaro M, Harrison S, van den Berg H, Sloot L, Hermans D, Cornelis G et al. Bioturbation of Ag2S-NPs in soil columns by earthworms. Environmental Pollution. 2019 Sep;252:155-162. https://doi.org/10.1016/j.envpol.2019.05.106