contributor author | Jingjing Liu | |
contributor author | Fusheng Zha | |
contributor author | Dongbiao Wu | |
contributor author | Peng Yu | |
date accessioned | 2024-12-24T09:57:40Z | |
date available | 2024-12-24T09:57:40Z | |
date copyright | 9/1/2024 12:00:00 AM | |
date issued | 2024 | |
identifier other | JOEEDU.EEENG-7649.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4298032 | |
description abstract | The efficiency of stabilization/solidification (S/S) treated heavy metal contaminated soils may be deteriorated by the changeable external environment. Thus, the toxicity characteristics leaching procedure (TCLP) and pH-dependent leaching test were carried out to evaluate the toxicity of zinc-contaminated soil treated by cement blended with soda residue with consideration of freezing–thawing (F-T) cycles. Results showed that F-T cycles had little impact on the toxicity of Zn-contaminated soils treated with cement-soda residue, and the leached Zn2+ concentration didn’t exceed the regulatory limit defined by the standards. Dissolution/precipitation of zinc hydroxides was suggested to be the controlling mechanism for Zn2+ leachability. Besides, Zn2+ immobilized by chemical incorporation and encapsulation by calcium silicate hydrates (CSHs) and calcium aluminate hydrates (CAHs) still remained stable in an acidic condition. Results of X-ray diffraction (XRD) and scanning electron microscopy (SEM) verified that F-T cycles impose little impact on the chemical properties of the specimens, but only alter the micro- and macrostructure characteristics. | |
publisher | American Society of Civil Engineers | |
title | Toxicity Evaluation of Cement-Soda Residue Stabilized and Solidified Zn-Contaminated Soil under Cyclic Freezing–Thawing Condition | |
type | Journal Article | |
journal volume | 150 | |
journal issue | 9 | |
journal title | Journal of Environmental Engineering | |
identifier doi | 10.1061/JOEEDU.EEENG-7649 | |
journal fristpage | 04024043-1 | |
journal lastpage | 04024043-12 | |
page | 12 | |
tree | Journal of Environmental Engineering:;2024:;Volume ( 150 ):;issue: 009 | |
contenttype | Fulltext | |