Stabilization and phase transformation of CuFe2O4 sintered from simulated copper-laden sludge

Nien Hsun Li, Shang Lain Lo, Ching Yao Hu, Ching Hong Hsieh, Ching Lung Chen

研究成果: 雜誌貢獻文章

26 引文 (Scopus)

摘要

The feasibility of stabilizing copper-laden sludge by high-temperature CuFe2O4 ferritization process is investigated with different sintering temperature, and the prolonged leaching test. The thermal behavior, structural morphology, phase composition, and phase transformation of the stabilized sludge were investigated by using thermal gravimetry-differential scanning calorimetry, scanning electron microscopy and X-ray diffraction. The leaching behavior of the stabilized sludge under acidic environment was evaluated by modified Toxicity Characteristic Leaching Procedure (TCLP). The results indicated that CuFe2O4 could be effectively formed at around 800°C by the iron oxide precursor with a 3h of short sintering. The transformation was discovered on crystallographic spinel structures: the low-temperature (800-900°C) tetragonal phase (t-CuFe2O4) and the high-temperature (~1000°C) cubic phase (c-CuFe2O4). At higher temperatures (~1100°C), the formation of cuprous ferrite delafossite phase (CuFeO2) from the dissociation of CuFe2O4 was also noticed. Both CuFe2O4 spinel and CuFeO2 delafossite phase have a better intrinsic resistance to acidic environment when compared to that of CuO phase by the modified TCLP test. The sintering strategy designed for copper-laden sludge is proven to be beneficial in stabilizing copper.

原文英語
頁(從 - 到)597-603
頁數7
期刊Journal of Hazardous Materials
190
發行號1-3
DOIs
出版狀態已發佈 - 六月 15 2011

指紋

Sewage
Copper
stabilization
Stabilization
Phase transitions
sludge
leaching
Leaching
copper
Temperature
Sintering
spinel
Toxicity
toxicity
gravimetry
ferrite
calorimetry
Hot Temperature
iron oxide
Gravimetric analysis

ASJC Scopus subject areas

  • Health, Toxicology and Mutagenesis
  • Pollution
  • Waste Management and Disposal
  • Environmental Chemistry
  • Environmental Engineering

引用此文

Stabilization and phase transformation of CuFe2O4 sintered from simulated copper-laden sludge. / Li, Nien Hsun; Lo, Shang Lain; Hu, Ching Yao; Hsieh, Ching Hong; Chen, Ching Lung.

於: Journal of Hazardous Materials, 卷 190, 編號 1-3, 15.06.2011, p. 597-603.

研究成果: 雜誌貢獻文章

Li, Nien Hsun ; Lo, Shang Lain ; Hu, Ching Yao ; Hsieh, Ching Hong ; Chen, Ching Lung. / Stabilization and phase transformation of CuFe2O4 sintered from simulated copper-laden sludge. 於: Journal of Hazardous Materials. 2011 ; 卷 190, 編號 1-3. 頁 597-603.
@article{0aa753b245944da69cbe20e930a88cca,
title = "Stabilization and phase transformation of CuFe2O4 sintered from simulated copper-laden sludge",
abstract = "The feasibility of stabilizing copper-laden sludge by high-temperature CuFe2O4 ferritization process is investigated with different sintering temperature, and the prolonged leaching test. The thermal behavior, structural morphology, phase composition, and phase transformation of the stabilized sludge were investigated by using thermal gravimetry-differential scanning calorimetry, scanning electron microscopy and X-ray diffraction. The leaching behavior of the stabilized sludge under acidic environment was evaluated by modified Toxicity Characteristic Leaching Procedure (TCLP). The results indicated that CuFe2O4 could be effectively formed at around 800°C by the iron oxide precursor with a 3h of short sintering. The transformation was discovered on crystallographic spinel structures: the low-temperature (800-900°C) tetragonal phase (t-CuFe2O4) and the high-temperature (~1000°C) cubic phase (c-CuFe2O4). At higher temperatures (~1100°C), the formation of cuprous ferrite delafossite phase (CuFeO2) from the dissociation of CuFe2O4 was also noticed. Both CuFe2O4 spinel and CuFeO2 delafossite phase have a better intrinsic resistance to acidic environment when compared to that of CuO phase by the modified TCLP test. The sintering strategy designed for copper-laden sludge is proven to be beneficial in stabilizing copper.",
keywords = "Copper, CuFeO, Sludge, Spinel, Stabilization",
author = "Li, {Nien Hsun} and Lo, {Shang Lain} and Hu, {Ching Yao} and Hsieh, {Ching Hong} and Chen, {Ching Lung}",
year = "2011",
month = "6",
day = "15",
doi = "10.1016/j.jhazmat.2011.03.089",
language = "English",
volume = "190",
pages = "597--603",
journal = "Journal of Hazardous Materials",
issn = "0304-3894",
publisher = "Elsevier",
number = "1-3",

}

TY - JOUR

T1 - Stabilization and phase transformation of CuFe2O4 sintered from simulated copper-laden sludge

AU - Li, Nien Hsun

AU - Lo, Shang Lain

AU - Hu, Ching Yao

AU - Hsieh, Ching Hong

AU - Chen, Ching Lung

PY - 2011/6/15

Y1 - 2011/6/15

N2 - The feasibility of stabilizing copper-laden sludge by high-temperature CuFe2O4 ferritization process is investigated with different sintering temperature, and the prolonged leaching test. The thermal behavior, structural morphology, phase composition, and phase transformation of the stabilized sludge were investigated by using thermal gravimetry-differential scanning calorimetry, scanning electron microscopy and X-ray diffraction. The leaching behavior of the stabilized sludge under acidic environment was evaluated by modified Toxicity Characteristic Leaching Procedure (TCLP). The results indicated that CuFe2O4 could be effectively formed at around 800°C by the iron oxide precursor with a 3h of short sintering. The transformation was discovered on crystallographic spinel structures: the low-temperature (800-900°C) tetragonal phase (t-CuFe2O4) and the high-temperature (~1000°C) cubic phase (c-CuFe2O4). At higher temperatures (~1100°C), the formation of cuprous ferrite delafossite phase (CuFeO2) from the dissociation of CuFe2O4 was also noticed. Both CuFe2O4 spinel and CuFeO2 delafossite phase have a better intrinsic resistance to acidic environment when compared to that of CuO phase by the modified TCLP test. The sintering strategy designed for copper-laden sludge is proven to be beneficial in stabilizing copper.

AB - The feasibility of stabilizing copper-laden sludge by high-temperature CuFe2O4 ferritization process is investigated with different sintering temperature, and the prolonged leaching test. The thermal behavior, structural morphology, phase composition, and phase transformation of the stabilized sludge were investigated by using thermal gravimetry-differential scanning calorimetry, scanning electron microscopy and X-ray diffraction. The leaching behavior of the stabilized sludge under acidic environment was evaluated by modified Toxicity Characteristic Leaching Procedure (TCLP). The results indicated that CuFe2O4 could be effectively formed at around 800°C by the iron oxide precursor with a 3h of short sintering. The transformation was discovered on crystallographic spinel structures: the low-temperature (800-900°C) tetragonal phase (t-CuFe2O4) and the high-temperature (~1000°C) cubic phase (c-CuFe2O4). At higher temperatures (~1100°C), the formation of cuprous ferrite delafossite phase (CuFeO2) from the dissociation of CuFe2O4 was also noticed. Both CuFe2O4 spinel and CuFeO2 delafossite phase have a better intrinsic resistance to acidic environment when compared to that of CuO phase by the modified TCLP test. The sintering strategy designed for copper-laden sludge is proven to be beneficial in stabilizing copper.

KW - Copper

KW - CuFeO

KW - Sludge

KW - Spinel

KW - Stabilization

UR - http://www.scopus.com/inward/record.url?scp=79956101344&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79956101344&partnerID=8YFLogxK

U2 - 10.1016/j.jhazmat.2011.03.089

DO - 10.1016/j.jhazmat.2011.03.089

M3 - Article

C2 - 21501927

AN - SCOPUS:79956101344

VL - 190

SP - 597

EP - 603

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

SN - 0304-3894

IS - 1-3

ER -