Column Experiment for the Removal of Cadmium, Copper, Lead and Zinc from Artificially Contaminated  Soil using EDTA, Rhamnolipids, and Soapnut

Elijah Ugwu; Bhaskar Sen Gupta; Adebayo J. Adeloye; Nadia Martínez-Villegas

doi:10.24018/ejgeo.2021.2.2.63

Column Experiment for the Removal of Cadmium, Copper, Lead and Zinc from Artificially Contaminated Soil using EDTA, Rhamnolipids, and Soapnut

Elijah Ugwu, Bhaskar Sen Gupta, Adebayo J. Adeloye, Nadia Martínez-Villegas

Research output: Contribution to journal › Article › peer-review

90 Downloads (Pure)

Abstract

Environmental contamination caused by high contents of toxic metals in the
soil is a global concern. Soil washing using chelating agents and saponin can
enhance metal removal from contaminated soils through the formation of
soluble metal complexes, mobilization, and extraction with the washing
solutions. Column experiments were conducted in this study to assess the
feasibility of using a chelate (EDTA), a saponin (soapnut) and microbial
(rhamnolipid) cleaning agents to enhance the removal of Cd, Cu, Pb and Zn
from sandy loam contaminated soils. The cumulative removal of Cd after 10
pore volumes were 74.05 for EDTA, 63.08 for rhamnolipids, and 69.07 for
soapnut. The cumulative removals of Cu after washing with 10 pore volumes
were 64.72% for soapnut, 61.58% for rhamnolipids and 61.95% for EDTA.
Also, the cumulative removals of Pb were 62% for soapnut, 59.65% for
rhamnolipids and 59.95% for EDTA after washing with 10 pore volumes.
The cumulative removals of Zn after washing with 10 pore volumes were
68.54% for soapnut, 62.65% for rhamnolipids and 66.08% for EDTA. The
performance of these experiments demonstrates that the application of these
cleaning agents in in-situ soil remediation can be effective alternative to ex-situ remediation.

Original language	English
Number of pages	7
Journal	European Journal of Environment and Earth Sciences
Volume	2
Issue number	2
DOIs	https://doi.org/10.24018/ejgeo.2021.2.2.63
Publication status	Published - 5 Mar 2021

Keywords

Heavy metals
Saponin
CONTAMINATED SOIL
Pore volume
Biosurfactant
Soil washing

Access to Document

10.24018/ejgeo.2021.2.2.63Licence: CC BY-NC

Download pdf
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Final published version, 455 KBLicence: CC BY-NC

Cite this

@article{5ab61abf43ae40d595c2e213a42baf8d,

title = "Column Experiment for the Removal of Cadmium, Copper, Lead and Zinc from Artificially Contaminated Soil using EDTA, Rhamnolipids, and Soapnut",

abstract = "Environmental contamination caused by high contents of toxic metals in the soil is a global concern. Soil washing using chelating agents and saponin can enhance metal removal from contaminated soils through the formation of soluble metal complexes, mobilization, and extraction with the washing solutions. Column experiments were conducted in this study to assess the feasibility of using a chelate (EDTA), a saponin (soapnut) and microbial (rhamnolipid) cleaning agents to enhance the removal of Cd, Cu, Pb and Zn from sandy loam contaminated soils. The cumulative removal of Cd after 10 pore volumes were 74.05 for EDTA, 63.08 for rhamnolipids, and 69.07 for soapnut. The cumulative removals of Cu after washing with 10 pore volumes were 64.72% for soapnut, 61.58% for rhamnolipids and 61.95% for EDTA. Also, the cumulative removals of Pb were 62% for soapnut, 59.65% for rhamnolipids and 59.95% for EDTA after washing with 10 pore volumes. The cumulative removals of Zn after washing with 10 pore volumes were 68.54% for soapnut, 62.65% for rhamnolipids and 66.08% for EDTA. The performance of these experiments demonstrates that the application of these cleaning agents in in-situ soil remediation can be effective alternative to ex-situ remediation.",

keywords = "Heavy metals, Saponin, CONTAMINATED SOIL, Pore volume, Biosurfactant, Soil washing",

author = "Elijah Ugwu and {Sen Gupta}, Bhaskar and Adeloye, {Adebayo J.} and Nadia Mart{\'i}nez-Villegas",

note = "Accepted for publication on 1 March 2021",

year = "2021",

month = mar,

day = "5",

doi = "10.24018/ejgeo.2021.2.2.63",

language = "English",

volume = "2",

journal = "European Journal of Environment and Earth Sciences",

issn = "2684-446X",

number = "2",

}

TY - JOUR

T1 - Column Experiment for the Removal of Cadmium, Copper, Lead and Zinc from Artificially Contaminated Soil using EDTA, Rhamnolipids, and Soapnut

AU - Ugwu, Elijah

AU - Sen Gupta, Bhaskar

AU - Adeloye, Adebayo J.

AU - Martínez-Villegas, Nadia

N1 - Accepted for publication on 1 March 2021

PY - 2021/3/5

Y1 - 2021/3/5

N2 - Environmental contamination caused by high contents of toxic metals in the soil is a global concern. Soil washing using chelating agents and saponin can enhance metal removal from contaminated soils through the formation of soluble metal complexes, mobilization, and extraction with the washing solutions. Column experiments were conducted in this study to assess the feasibility of using a chelate (EDTA), a saponin (soapnut) and microbial (rhamnolipid) cleaning agents to enhance the removal of Cd, Cu, Pb and Zn from sandy loam contaminated soils. The cumulative removal of Cd after 10 pore volumes were 74.05 for EDTA, 63.08 for rhamnolipids, and 69.07 for soapnut. The cumulative removals of Cu after washing with 10 pore volumes were 64.72% for soapnut, 61.58% for rhamnolipids and 61.95% for EDTA. Also, the cumulative removals of Pb were 62% for soapnut, 59.65% for rhamnolipids and 59.95% for EDTA after washing with 10 pore volumes. The cumulative removals of Zn after washing with 10 pore volumes were 68.54% for soapnut, 62.65% for rhamnolipids and 66.08% for EDTA. The performance of these experiments demonstrates that the application of these cleaning agents in in-situ soil remediation can be effective alternative to ex-situ remediation.

AB - Environmental contamination caused by high contents of toxic metals in the soil is a global concern. Soil washing using chelating agents and saponin can enhance metal removal from contaminated soils through the formation of soluble metal complexes, mobilization, and extraction with the washing solutions. Column experiments were conducted in this study to assess the feasibility of using a chelate (EDTA), a saponin (soapnut) and microbial (rhamnolipid) cleaning agents to enhance the removal of Cd, Cu, Pb and Zn from sandy loam contaminated soils. The cumulative removal of Cd after 10 pore volumes were 74.05 for EDTA, 63.08 for rhamnolipids, and 69.07 for soapnut. The cumulative removals of Cu after washing with 10 pore volumes were 64.72% for soapnut, 61.58% for rhamnolipids and 61.95% for EDTA. Also, the cumulative removals of Pb were 62% for soapnut, 59.65% for rhamnolipids and 59.95% for EDTA after washing with 10 pore volumes. The cumulative removals of Zn after washing with 10 pore volumes were 68.54% for soapnut, 62.65% for rhamnolipids and 66.08% for EDTA. The performance of these experiments demonstrates that the application of these cleaning agents in in-situ soil remediation can be effective alternative to ex-situ remediation.

KW - Heavy metals

KW - Saponin

KW - CONTAMINATED SOIL

KW - Pore volume

KW - Biosurfactant

KW - Soil washing

U2 - 10.24018/ejgeo.2021.2.2.63

DO - 10.24018/ejgeo.2021.2.2.63

M3 - Article

SN - 2684-446X

VL - 2

JO - European Journal of Environment and Earth Sciences

JF - European Journal of Environment and Earth Sciences

IS - 2

ER -

Column Experiment for the Removal of Cadmium, Copper, Lead and Zinc from Artificially Contaminated Soil using EDTA, Rhamnolipids, and Soapnut

Abstract

Keywords

Access to Document

Fingerprint

Cite this