Stabilization/solidification by hydraulic binders of metal elements from landfill leachate

Authors

  • Mira Cheribet Drouiche
  • Karim Moussaceb
  • Emmanuel Joussein
  • Jean-Claude Bollinger

DOI:

https://doi.org/10.2478/nbec-2019-0010

Keywords:

CKD, Hydraulic binder, Leachates solidification/stabilization, Leaching tests, TCLP test

Abstract

The objective of this work is to use stabilization/solidification (S/S) on the landfill leachates that often are heavily polluted by heavy metals and require proper treatment before discharge into the environment. The process consists of a S/S using a hydraulic binder in order to limit the solubility and mobility of the pollutants. While cement is the most used binder based on S/S values, in this study we substituted it by cement kiln dust (CKD) in two replacement ratios 25.50 and 100 %. The resulting effect on mechanical resistance and on retention of pollutants was evaluated. A metal (lead, iron and zinc) contaminated leachate from the landfill site of Sidi-Bouderham in Algeria was mixed with an amount of cement and cement kiln dust in different proportions in order to optimize our formulations. The smooth paste was obtained and a standardized test of the test specimens was analyzed for mechanical resistance after 7 and 28 d of setting. Our results show that F1P (100 % Cement) and F2P (75 % Cement + 25 % CKD) point on satisfactory mechanical strength and metal retention capacity. Our approach suggests a promising approach for remediation of polluted sites.

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Published

2019-08-17

How to Cite

Drouiche, M. C. ., Moussaceb, K. ., Joussein, E. ., & Bollinger, J.-C. . (2019). Stabilization/solidification by hydraulic binders of metal elements from landfill leachate. Nova Biotechnologica Et Chimica, 18(1), 72–83. https://doi.org/10.2478/nbec-2019-0010

Issue

Section

Research Articles
Received 2020-02-28
Published 2019-08-17