Fractionation and leaching of heavy metals in soils amended with a new biochar nanocomposite

Hoda Arabyarmohammadi, Ahmad Khodadadi Darban, Sjoerd E.A.T.M. van der Zee, Mahmoud Abdollahy, Bita Ayati

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

In this study, surface soils of the Bama Pb-Zn mine-impacted area were sampled for an area surrounding the mineral processing plant. After collecting 65 samples and analyzing them for initial Cu, Pb, Zn, and Cd metal contents, the area was zonated based on the concentration distribution using ordinary kriging in R. A single homogenous sample was prepared by mixing equal weights of each sample as being representative of the whole impacted area (ST). Next, a synthetic model soil (SM) was prepared according to the mean ST texture (SM), divided into two portions, where one portion was amended with a biochar composite (10% w/w) (SMA), both portions were artificially contaminated with Cu, Pb, Zn, and Cd (SMAC and SMC). The mixed soil ST, and the model soils SMC and SMAC, were subjected to soil sequential extraction procedure to determine the variations in fractionation of heavy metals. Results showed that the fractionation in the unamended model soil (SMC) was very close to the original real soil (ST). Moreover, in both amended and unamended soils, Cd and Pb had the highest and the lowest mobility, respectively. Zn and Cu showed intermediate mobilities. The performance of the amendment was evaluated using a 150-day column leaching test taking leachate samples at designated time intervals, and Cu, Pb, Zn, and Cd concentrations were analyzed. Results of column leaching were in good agreement with the soil fractionation as Cd and Pb showed the highest and the lowest mobilities, respectively. Leaching through the soil column was also simulated by HP1 model. Results of simulation found in acceptable proximity to the experimental data despite remarkable differences due to limitations in defining soil to the simulation system.
Original languageEnglish
Pages (from-to)6826-6837
JournalEnvironmental Science and Pollution Research
Volume25
Issue number7
Early online date21 Dec 2017
DOIs
Publication statusPublished - Mar 2018

Fingerprint

Nanocomposites
Fractionation
Heavy Metals
Leaching
Heavy metals
Soil
fractionation
leaching
heavy metal
Soils
soil
biochar
mineral processing
soil column
Spatial Analysis
Ore treatment
kriging
simulation
leachate
soil surface

Keywords

  • Adsorption
  • Biochar
  • Fractionation
  • Leaching
  • Mine
  • Mobility
  • Pollution
  • Soil
  • Toxic metals

Cite this

Arabyarmohammadi, Hoda ; Darban, Ahmad Khodadadi ; van der Zee, Sjoerd E.A.T.M. ; Abdollahy, Mahmoud ; Ayati, Bita. / Fractionation and leaching of heavy metals in soils amended with a new biochar nanocomposite. In: Environmental Science and Pollution Research. 2018 ; Vol. 25, No. 7. pp. 6826-6837.
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abstract = "In this study, surface soils of the Bama Pb-Zn mine-impacted area were sampled for an area surrounding the mineral processing plant. After collecting 65 samples and analyzing them for initial Cu, Pb, Zn, and Cd metal contents, the area was zonated based on the concentration distribution using ordinary kriging in R. A single homogenous sample was prepared by mixing equal weights of each sample as being representative of the whole impacted area (ST). Next, a synthetic model soil (SM) was prepared according to the mean ST texture (SM), divided into two portions, where one portion was amended with a biochar composite (10{\%} w/w) (SMA), both portions were artificially contaminated with Cu, Pb, Zn, and Cd (SMAC and SMC). The mixed soil ST, and the model soils SMC and SMAC, were subjected to soil sequential extraction procedure to determine the variations in fractionation of heavy metals. Results showed that the fractionation in the unamended model soil (SMC) was very close to the original real soil (ST). Moreover, in both amended and unamended soils, Cd and Pb had the highest and the lowest mobility, respectively. Zn and Cu showed intermediate mobilities. The performance of the amendment was evaluated using a 150-day column leaching test taking leachate samples at designated time intervals, and Cu, Pb, Zn, and Cd concentrations were analyzed. Results of column leaching were in good agreement with the soil fractionation as Cd and Pb showed the highest and the lowest mobilities, respectively. Leaching through the soil column was also simulated by HP1 model. Results of simulation found in acceptable proximity to the experimental data despite remarkable differences due to limitations in defining soil to the simulation system.",
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author = "Hoda Arabyarmohammadi and Darban, {Ahmad Khodadadi} and {van der Zee}, {Sjoerd E.A.T.M.} and Mahmoud Abdollahy and Bita Ayati",
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Fractionation and leaching of heavy metals in soils amended with a new biochar nanocomposite. / Arabyarmohammadi, Hoda; Darban, Ahmad Khodadadi; van der Zee, Sjoerd E.A.T.M.; Abdollahy, Mahmoud; Ayati, Bita.

In: Environmental Science and Pollution Research, Vol. 25, No. 7, 03.2018, p. 6826-6837.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Fractionation and leaching of heavy metals in soils amended with a new biochar nanocomposite

AU - Arabyarmohammadi, Hoda

AU - Darban, Ahmad Khodadadi

AU - van der Zee, Sjoerd E.A.T.M.

AU - Abdollahy, Mahmoud

AU - Ayati, Bita

PY - 2018/3

Y1 - 2018/3

N2 - In this study, surface soils of the Bama Pb-Zn mine-impacted area were sampled for an area surrounding the mineral processing plant. After collecting 65 samples and analyzing them for initial Cu, Pb, Zn, and Cd metal contents, the area was zonated based on the concentration distribution using ordinary kriging in R. A single homogenous sample was prepared by mixing equal weights of each sample as being representative of the whole impacted area (ST). Next, a synthetic model soil (SM) was prepared according to the mean ST texture (SM), divided into two portions, where one portion was amended with a biochar composite (10% w/w) (SMA), both portions were artificially contaminated with Cu, Pb, Zn, and Cd (SMAC and SMC). The mixed soil ST, and the model soils SMC and SMAC, were subjected to soil sequential extraction procedure to determine the variations in fractionation of heavy metals. Results showed that the fractionation in the unamended model soil (SMC) was very close to the original real soil (ST). Moreover, in both amended and unamended soils, Cd and Pb had the highest and the lowest mobility, respectively. Zn and Cu showed intermediate mobilities. The performance of the amendment was evaluated using a 150-day column leaching test taking leachate samples at designated time intervals, and Cu, Pb, Zn, and Cd concentrations were analyzed. Results of column leaching were in good agreement with the soil fractionation as Cd and Pb showed the highest and the lowest mobilities, respectively. Leaching through the soil column was also simulated by HP1 model. Results of simulation found in acceptable proximity to the experimental data despite remarkable differences due to limitations in defining soil to the simulation system.

AB - In this study, surface soils of the Bama Pb-Zn mine-impacted area were sampled for an area surrounding the mineral processing plant. After collecting 65 samples and analyzing them for initial Cu, Pb, Zn, and Cd metal contents, the area was zonated based on the concentration distribution using ordinary kriging in R. A single homogenous sample was prepared by mixing equal weights of each sample as being representative of the whole impacted area (ST). Next, a synthetic model soil (SM) was prepared according to the mean ST texture (SM), divided into two portions, where one portion was amended with a biochar composite (10% w/w) (SMA), both portions were artificially contaminated with Cu, Pb, Zn, and Cd (SMAC and SMC). The mixed soil ST, and the model soils SMC and SMAC, were subjected to soil sequential extraction procedure to determine the variations in fractionation of heavy metals. Results showed that the fractionation in the unamended model soil (SMC) was very close to the original real soil (ST). Moreover, in both amended and unamended soils, Cd and Pb had the highest and the lowest mobility, respectively. Zn and Cu showed intermediate mobilities. The performance of the amendment was evaluated using a 150-day column leaching test taking leachate samples at designated time intervals, and Cu, Pb, Zn, and Cd concentrations were analyzed. Results of column leaching were in good agreement with the soil fractionation as Cd and Pb showed the highest and the lowest mobilities, respectively. Leaching through the soil column was also simulated by HP1 model. Results of simulation found in acceptable proximity to the experimental data despite remarkable differences due to limitations in defining soil to the simulation system.

KW - Adsorption

KW - Biochar

KW - Fractionation

KW - Leaching

KW - Mine

KW - Mobility

KW - Pollution

KW - Soil

KW - Toxic metals

U2 - 10.1007/s11356-017-0976-0

DO - 10.1007/s11356-017-0976-0

M3 - Article

VL - 25

SP - 6826

EP - 6837

JO - Environmental Science and Pollution Research

JF - Environmental Science and Pollution Research

SN - 0944-1344

IS - 7

ER -