ORIGINAL RESEARCH
Stabilization/Solidification Treatment of Cadmium-Bearing-Residue with Magnesium Slag
Yujie Chen 1  
,  
Fenglan Han 2  
,  
Yanjie Liang 1, 3  
,  
Ning Peng 3, 4  
,  
Bing Peng 1, 3  
,  
Hui Liu 1, 3  
,  
Zhongbing Wang 1  
,  
Zongwen Zhao 1  
 
 
More details
Hide details
1
School of Metallurgy and Environment, Central South University, Changsha, Hunan, China
2
School of Materials Science and Engineering, Beifang Uinversity of Nationalities, Yinchuan, Ningxia, China
3
Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, Hunan, China
4
School of Material Science and Engineering, Central South University, Changsha, Hunan, China
CORRESPONDING AUTHOR
Fenglan Han   

School of Materials Science and Engineering, Beifang Uinversity of Nationalities, Yinchuan, Ningxia, 204 Wenchangbeilu, Yinchuan, Ningxia, China, 750021 Yinchuan, China
Online publish date: 2019-08-06
Publish date: 2019-10-23
Submission date: 2018-09-02
Final revision date: 2018-11-08
Acceptance date: 2018-11-21
 
Pol. J. Environ. Stud. 2020;29(1):45–52
KEYWORDS
TOPICS
ABSTRACT
Stabilizing/Solidifying cadmium in residue is a great challenge to the treatment of solid waste. In this work, a new stabilization process was proposed to dispose of simulated cadmium-bearing-residue (CBR) by using magnesium slag of the same high-hydration and gelling properties as a binder. A sharp decline in cadmium leaching contraction from 1415 mg·L-1 to less than 1 mg·L-1 was obtained in this new process. The XRD, FT-IR and XPS results indicated it was hydration products and silicates produced by magnesium slag that could promote cadmium (Cd) to take place of calcium (Ca) and immobilize cadmium in the residue. The European Community Bureau of Reference (BCR) experiment also discovered that more reducible, oxidizable and residual fraction in favour of restrained environmental availability was produced in the process.
eISSN:2083-5906
ISSN:1230-1485