Next Article in Journal
Breastfeeding: A Cornerstone of Healthy Sustainable Diets
Previous Article in Journal
Perceived Value and Customer Adoption of Electric and Hybrid Vehicles
Open AccessArticle

Effects of an Integrated Carbide Slag-Mushroom Dreg-Calcium Superphosphate Amendment on the Stabilization Process of Pb, Cu, Zn and Cd in Contaminated Soils

by 1,2, 1, 1 and 2,3,*
1
College of the Environment, Guangxi University, Nanning 530004, China
2
Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, China
3
College of Environment and Resource, Guangxi Normal University, Guilin 541004, China
*
Author to whom correspondence should be addressed.
Sustainability 2019, 11(18), 4957; https://doi.org/10.3390/su11184957
Received: 3 July 2019 / Revised: 22 August 2019 / Accepted: 25 August 2019 / Published: 11 September 2019
(This article belongs to the Section Sustainable Chemistry)
In the present study, the integrated use of organic and inorganic amendments (CS–MD–CSP) including carbide slag (CS), calcium superphosphate (CSP) and mushroom dreg (MD) are employed for the stabilization of heavy metals in contaminated soils. A response surface methodology combined with immobilization efficiency was employed to evaluate and optimize the proportion of the integration amendments on the stabilization process. The results predicted by a Box–Behnken design indicated that the maximum immobilization efficiencies of soil Pb, Cu, Zn and Cd could be achieve up to 99.88, 96.11, 99.78 and 87.88%, respectively, when the dosage of CS, CSP and MD were set as 4, 1 and 6%, respectively. European Community Bureau of Reference (BCR) speciation analysis indicated that the acid-soluble proportion of Pb, Cu, Zn and Cd in the soils decreased by 72.68, 37.03, 9.36 and 12.94%, respectively. Thus, this CS–MD–CSP integration amendment could potentially be used for the remediation of Pb, Cu, Zn and Cd in contaminated soils. View Full-Text
Keywords: heavy metals; stabilization; carbide slag; calcium superphosphate; mushroom dreg heavy metals; stabilization; carbide slag; calcium superphosphate; mushroom dreg
Show Figures

Figure 1

MDPI and ACS Style

Wu, L.; Nong, J.; Zeng, D.; Li, Y. Effects of an Integrated Carbide Slag-Mushroom Dreg-Calcium Superphosphate Amendment on the Stabilization Process of Pb, Cu, Zn and Cd in Contaminated Soils. Sustainability 2019, 11, 4957.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop