Roxarsone desorption from the surface of goethite by competitive anions, phosphate and hydroxide ions: Significance of the presence of metal ions

Ling Yuan Wang, Shao Wei Wang, Wan Ru Chen

研究成果: Article

7 引文 (Scopus)

摘要

Aromatic organoarsenical roxarsone (ROX) is a common additive for livestock feed. This arsenic containing pollutant could be discharged into the environment through agricultural application of animal manure, and pose potential threats to both humans and the wider environment. In this study, the influence of pH, competing anions and metal ions on the adsorption and desorption of ROX on goethite were investigated in order to understand their mobility in the environment. Both hydroxide ions and phosphate are common substances in the environment, and both are potential competing anions for ROX. Our results showed the addition of phosphate desorbed more ROX than the addition of hydroxide ions. As pH increased, the effect of phosphate did not show much difference to that of hydroxide ion. The results indicate that the presence of phosphate will greatly increase the mobility of ROX at low pH. Six common metal ions, including Zn2+, Cu2+, Fe3+, Mn2+, Mg2+, and Ca2+, were tested and all spiked metal ions enhanced the stability of ROX adsorption on the surface of goethite, and led to less desorption when phosphate was added. The results demonstrate that metal ions may form complex/surface precipitation with ROX to enhance its adsorption. The effect from Fe3+, Zn2+ and Cu2+ was more pronounced than other metal ions, which might result from the fact that these three metal ions tend to associate with hydroxide ions and decrease the pH. The results of this research may shed light on the environmental fate and transportation of aromatic organoarsenicals in soil.

原文English
頁(從 - 到)423-430
頁數8
期刊Chemosphere
152
DOIs
出版狀態Published - 2016 六月 1

指紋

Roxarsone
goethite
hydroxide
Anions
Metal ions
anion
Desorption
desorption
Phosphates
Negative ions
Metals
phosphate
Ions
ion
metal
Adsorption
Agriculture
adsorption
Manures
Manure

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

引用此文

@article{959c33090cf440b7b97152cac6a45756,
title = "Roxarsone desorption from the surface of goethite by competitive anions, phosphate and hydroxide ions: Significance of the presence of metal ions",
abstract = "Aromatic organoarsenical roxarsone (ROX) is a common additive for livestock feed. This arsenic containing pollutant could be discharged into the environment through agricultural application of animal manure, and pose potential threats to both humans and the wider environment. In this study, the influence of pH, competing anions and metal ions on the adsorption and desorption of ROX on goethite were investigated in order to understand their mobility in the environment. Both hydroxide ions and phosphate are common substances in the environment, and both are potential competing anions for ROX. Our results showed the addition of phosphate desorbed more ROX than the addition of hydroxide ions. As pH increased, the effect of phosphate did not show much difference to that of hydroxide ion. The results indicate that the presence of phosphate will greatly increase the mobility of ROX at low pH. Six common metal ions, including Zn2+, Cu2+, Fe3+, Mn2+, Mg2+, and Ca2+, were tested and all spiked metal ions enhanced the stability of ROX adsorption on the surface of goethite, and led to less desorption when phosphate was added. The results demonstrate that metal ions may form complex/surface precipitation with ROX to enhance its adsorption. The effect from Fe3+, Zn2+ and Cu2+ was more pronounced than other metal ions, which might result from the fact that these three metal ions tend to associate with hydroxide ions and decrease the pH. The results of this research may shed light on the environmental fate and transportation of aromatic organoarsenicals in soil.",
author = "Wang, {Ling Yuan} and Wang, {Shao Wei} and Chen, {Wan Ru}",
year = "2016",
month = "6",
day = "1",
doi = "10.1016/j.chemosphere.2016.02.112",
language = "English",
volume = "152",
pages = "423--430",
journal = "Chemosphere",
issn = "0045-6535",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Roxarsone desorption from the surface of goethite by competitive anions, phosphate and hydroxide ions

T2 - Significance of the presence of metal ions

AU - Wang, Ling Yuan

AU - Wang, Shao Wei

AU - Chen, Wan Ru

PY - 2016/6/1

Y1 - 2016/6/1

N2 - Aromatic organoarsenical roxarsone (ROX) is a common additive for livestock feed. This arsenic containing pollutant could be discharged into the environment through agricultural application of animal manure, and pose potential threats to both humans and the wider environment. In this study, the influence of pH, competing anions and metal ions on the adsorption and desorption of ROX on goethite were investigated in order to understand their mobility in the environment. Both hydroxide ions and phosphate are common substances in the environment, and both are potential competing anions for ROX. Our results showed the addition of phosphate desorbed more ROX than the addition of hydroxide ions. As pH increased, the effect of phosphate did not show much difference to that of hydroxide ion. The results indicate that the presence of phosphate will greatly increase the mobility of ROX at low pH. Six common metal ions, including Zn2+, Cu2+, Fe3+, Mn2+, Mg2+, and Ca2+, were tested and all spiked metal ions enhanced the stability of ROX adsorption on the surface of goethite, and led to less desorption when phosphate was added. The results demonstrate that metal ions may form complex/surface precipitation with ROX to enhance its adsorption. The effect from Fe3+, Zn2+ and Cu2+ was more pronounced than other metal ions, which might result from the fact that these three metal ions tend to associate with hydroxide ions and decrease the pH. The results of this research may shed light on the environmental fate and transportation of aromatic organoarsenicals in soil.

AB - Aromatic organoarsenical roxarsone (ROX) is a common additive for livestock feed. This arsenic containing pollutant could be discharged into the environment through agricultural application of animal manure, and pose potential threats to both humans and the wider environment. In this study, the influence of pH, competing anions and metal ions on the adsorption and desorption of ROX on goethite were investigated in order to understand their mobility in the environment. Both hydroxide ions and phosphate are common substances in the environment, and both are potential competing anions for ROX. Our results showed the addition of phosphate desorbed more ROX than the addition of hydroxide ions. As pH increased, the effect of phosphate did not show much difference to that of hydroxide ion. The results indicate that the presence of phosphate will greatly increase the mobility of ROX at low pH. Six common metal ions, including Zn2+, Cu2+, Fe3+, Mn2+, Mg2+, and Ca2+, were tested and all spiked metal ions enhanced the stability of ROX adsorption on the surface of goethite, and led to less desorption when phosphate was added. The results demonstrate that metal ions may form complex/surface precipitation with ROX to enhance its adsorption. The effect from Fe3+, Zn2+ and Cu2+ was more pronounced than other metal ions, which might result from the fact that these three metal ions tend to associate with hydroxide ions and decrease the pH. The results of this research may shed light on the environmental fate and transportation of aromatic organoarsenicals in soil.

UR - http://www.scopus.com/inward/record.url?scp=84961150325&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84961150325&partnerID=8YFLogxK

U2 - 10.1016/j.chemosphere.2016.02.112

DO - 10.1016/j.chemosphere.2016.02.112

M3 - Article

C2 - 26999752

AN - SCOPUS:84961150325

VL - 152

SP - 423

EP - 430

JO - Chemosphere

JF - Chemosphere

SN - 0045-6535

ER -