Leaching behaviors of heavy metals in the solidification/stabilization matrix contained rejected fly ash blended and cement

Xiu Chen Qiao; Zong Shou Lin; Shi Cong Kou; Chi Sun Poon

Leaching behaviors of heavy metals in the solidification/stabilization matrix contained rejected fly ash blended and cement

Xiu Chen Qiao, Zong Shou Lin, Shi Cong Kou, Chi Sun Poon

Research output: Journal article publication › Journal article › Academic research › peer-review

Abstract

By means of radial Dynamic Leaching Test (r-DLT), it was studied that the behaviors of heavy metal hydroxides in the solidified and stabilized (S/S) samples contained cement and rejected fly ash. It was found that the heavy metals transferred from the inner part of samples to the solid-liquid interface during the leaching test. However, the lead accumulated in the area closed to the solid-liquid interface and was not removed from the solid phase to the leachant in time. The copper accumulated in a wider area than that of the lead. The results also showed that the zinc was easy to leach without accumulation, but adding Ca(OH)2can retard this leaching.

Original language	English
Pages (from-to)	11-14
Number of pages	4
Journal	Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology
Volume	27
Issue number	10
Publication status	Published - 1 Oct 2005

Keywords

DLT
Leaching
Rejected fly ash
Solidification
Stabilization

ASJC Scopus subject areas

Management of Technology and Innovation

Cite this

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title = "Leaching behaviors of heavy metals in the solidification/stabilization matrix contained rejected fly ash blended and cement",

abstract = "By means of radial Dynamic Leaching Test (r-DLT), it was studied that the behaviors of heavy metal hydroxides in the solidified and stabilized (S/S) samples contained cement and rejected fly ash. It was found that the heavy metals transferred from the inner part of samples to the solid-liquid interface during the leaching test. However, the lead accumulated in the area closed to the solid-liquid interface and was not removed from the solid phase to the leachant in time. The copper accumulated in a wider area than that of the lead. The results also showed that the zinc was easy to leach without accumulation, but adding Ca(OH)2can retard this leaching.",

keywords = "DLT, Leaching, Rejected fly ash, Solidification, Stabilization",

author = "Qiao, {Xiu Chen} and Lin, {Zong Shou} and Kou, {Shi Cong} and Poon, {Chi Sun}",

year = "2005",

month = oct,

day = "1",

language = "English",

volume = "27",

pages = "11--14",

journal = "Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology",

issn = "1671-4431",

publisher = "Wuhan University of Technology",

number = "10",

}

Leaching behaviors of heavy metals in the solidification/stabilization matrix contained rejected fly ash blended and cement. / Qiao, Xiu Chen; Lin, Zong Shou; Kou, Shi Cong et al.
In: Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology, Vol. 27, No. 10, 01.10.2005, p. 11-14.

Research output: Journal article publication › Journal article › Academic research › peer-review

TY - JOUR

T1 - Leaching behaviors of heavy metals in the solidification/stabilization matrix contained rejected fly ash blended and cement

AU - Qiao, Xiu Chen

AU - Lin, Zong Shou

AU - Kou, Shi Cong

AU - Poon, Chi Sun

PY - 2005/10/1

Y1 - 2005/10/1

N2 - By means of radial Dynamic Leaching Test (r-DLT), it was studied that the behaviors of heavy metal hydroxides in the solidified and stabilized (S/S) samples contained cement and rejected fly ash. It was found that the heavy metals transferred from the inner part of samples to the solid-liquid interface during the leaching test. However, the lead accumulated in the area closed to the solid-liquid interface and was not removed from the solid phase to the leachant in time. The copper accumulated in a wider area than that of the lead. The results also showed that the zinc was easy to leach without accumulation, but adding Ca(OH)2can retard this leaching.

AB - By means of radial Dynamic Leaching Test (r-DLT), it was studied that the behaviors of heavy metal hydroxides in the solidified and stabilized (S/S) samples contained cement and rejected fly ash. It was found that the heavy metals transferred from the inner part of samples to the solid-liquid interface during the leaching test. However, the lead accumulated in the area closed to the solid-liquid interface and was not removed from the solid phase to the leachant in time. The copper accumulated in a wider area than that of the lead. The results also showed that the zinc was easy to leach without accumulation, but adding Ca(OH)2can retard this leaching.

KW - DLT

KW - Leaching

KW - Rejected fly ash

KW - Solidification

KW - Stabilization

UR - http://www.scopus.com/inward/record.url?scp=28244479416&partnerID=8YFLogxK

M3 - Journal article

SN - 1671-4431

VL - 27

SP - 11

EP - 14

JO - Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology

JF - Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology

IS - 10

ER -

Leaching behaviors of heavy metals in the solidification/stabilization matrix contained rejected fly ash blended and cement

Abstract

Keywords

ASJC Scopus subject areas

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