Mobilization of Cu and Zn in contaminated soil by nitrilotriacetic acid

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Batch and upflow column leaching experiments were used to evaluate the nature and extent of Cu and Zn solubilization from contaminated soil by nitrilotriacetic acid (NTA) in 0.025 M NaClO4. In batch soil suspensions, NTA levels of 10-5 to 10-3 M substantially promoted Cu and Zn release from the metal-enriched soil. The ability of NTA to enhance Cu and Zn solubility decreased with increasing solution acidity probably due to competitive binding of NTA by protons and Fe released by hydrous oxide dissolution. However, in the pH range typically encountered in northeastern U.S. soils, soluble metal levels were nearly constant for a given NTA concentration. Leaching soil columns with NTA solutions enhanced Cu release more than Zn, as the enrichment ratio (cumulative metal leached by NTA compared to the 0.025 M NaClO4 control leachate) after 85 pore volumes displacements was 23.6 and 4.3 for Cu and Zn, respectively. While Cu release by 0.01 M CaCl2 differed little from the control, 0.01 M CaCl2 was substantially more effective than 10-5 M NTA in displacing bound Zn. The data reflect different retention mechanisms for Cu and Zn in this soil.

Original languageEnglish (US)
Pages (from-to)449-458
Number of pages10
JournalWater, Air, and Soil Pollution
Volume37
Issue number3-4
DOIs
StatePublished - Feb 1 1988

Fingerprint

Nitrilotriacetic Acid
mobilization
Soils
Acids
acid
Metals
Leaching
metal
soil
leaching
contaminated soil
solubilization
soil column
Acidity
Oxides
leachate
acidity
Protons
Suspensions
Dissolution

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Ecological Modeling
  • Water Science and Technology
  • Pollution

Cite this

@article{9cad3741261d49e4b4ec87145ce3affa,
title = "Mobilization of Cu and Zn in contaminated soil by nitrilotriacetic acid",
abstract = "Batch and upflow column leaching experiments were used to evaluate the nature and extent of Cu and Zn solubilization from contaminated soil by nitrilotriacetic acid (NTA) in 0.025 M NaClO4. In batch soil suspensions, NTA levels of 10-5 to 10-3 M substantially promoted Cu and Zn release from the metal-enriched soil. The ability of NTA to enhance Cu and Zn solubility decreased with increasing solution acidity probably due to competitive binding of NTA by protons and Fe released by hydrous oxide dissolution. However, in the pH range typically encountered in northeastern U.S. soils, soluble metal levels were nearly constant for a given NTA concentration. Leaching soil columns with NTA solutions enhanced Cu release more than Zn, as the enrichment ratio (cumulative metal leached by NTA compared to the 0.025 M NaClO4 control leachate) after 85 pore volumes displacements was 23.6 and 4.3 for Cu and Zn, respectively. While Cu release by 0.01 M CaCl2 differed little from the control, 0.01 M CaCl2 was substantially more effective than 10-5 M NTA in displacing bound Zn. The data reflect different retention mechanisms for Cu and Zn in this soil.",
author = "Linn, {J. H.} and Elliott, {Herschel Adams}",
year = "1988",
month = "2",
day = "1",
doi = "10.1007/BF00192954",
language = "English (US)",
volume = "37",
pages = "449--458",
journal = "Water, Air, and Soil Pollution",
issn = "0049-6979",
publisher = "Springer Netherlands",
number = "3-4",

}

Mobilization of Cu and Zn in contaminated soil by nitrilotriacetic acid. / Linn, J. H.; Elliott, Herschel Adams.

In: Water, Air, and Soil Pollution, Vol. 37, No. 3-4, 01.02.1988, p. 449-458.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Mobilization of Cu and Zn in contaminated soil by nitrilotriacetic acid

AU - Linn, J. H.

AU - Elliott, Herschel Adams

PY - 1988/2/1

Y1 - 1988/2/1

N2 - Batch and upflow column leaching experiments were used to evaluate the nature and extent of Cu and Zn solubilization from contaminated soil by nitrilotriacetic acid (NTA) in 0.025 M NaClO4. In batch soil suspensions, NTA levels of 10-5 to 10-3 M substantially promoted Cu and Zn release from the metal-enriched soil. The ability of NTA to enhance Cu and Zn solubility decreased with increasing solution acidity probably due to competitive binding of NTA by protons and Fe released by hydrous oxide dissolution. However, in the pH range typically encountered in northeastern U.S. soils, soluble metal levels were nearly constant for a given NTA concentration. Leaching soil columns with NTA solutions enhanced Cu release more than Zn, as the enrichment ratio (cumulative metal leached by NTA compared to the 0.025 M NaClO4 control leachate) after 85 pore volumes displacements was 23.6 and 4.3 for Cu and Zn, respectively. While Cu release by 0.01 M CaCl2 differed little from the control, 0.01 M CaCl2 was substantially more effective than 10-5 M NTA in displacing bound Zn. The data reflect different retention mechanisms for Cu and Zn in this soil.

AB - Batch and upflow column leaching experiments were used to evaluate the nature and extent of Cu and Zn solubilization from contaminated soil by nitrilotriacetic acid (NTA) in 0.025 M NaClO4. In batch soil suspensions, NTA levels of 10-5 to 10-3 M substantially promoted Cu and Zn release from the metal-enriched soil. The ability of NTA to enhance Cu and Zn solubility decreased with increasing solution acidity probably due to competitive binding of NTA by protons and Fe released by hydrous oxide dissolution. However, in the pH range typically encountered in northeastern U.S. soils, soluble metal levels were nearly constant for a given NTA concentration. Leaching soil columns with NTA solutions enhanced Cu release more than Zn, as the enrichment ratio (cumulative metal leached by NTA compared to the 0.025 M NaClO4 control leachate) after 85 pore volumes displacements was 23.6 and 4.3 for Cu and Zn, respectively. While Cu release by 0.01 M CaCl2 differed little from the control, 0.01 M CaCl2 was substantially more effective than 10-5 M NTA in displacing bound Zn. The data reflect different retention mechanisms for Cu and Zn in this soil.

UR - http://www.scopus.com/inward/record.url?scp=0023735679&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0023735679&partnerID=8YFLogxK

U2 - 10.1007/BF00192954

DO - 10.1007/BF00192954

M3 - Article

VL - 37

SP - 449

EP - 458

JO - Water, Air, and Soil Pollution

JF - Water, Air, and Soil Pollution

SN - 0049-6979

IS - 3-4

ER -