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Open AccessArticle

Evaluation of Different Treatment Processes for Landfill Leachate Using Low-Cost Agro-Industrial Materials

1
Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
2
Centre for Tropical Climate Change System, Institute of Climate Change, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
3
Department of Environment Engineering Technology, Universiti Kuala Lumpur Branch Campus Malaysian Institute of Chemical & Bioengineering Technology (UniKL MICET), Melaka 78000, Malaysia
*
Author to whom correspondence should be addressed.
Processes 2020, 8(1), 111; https://doi.org/10.3390/pr8010111
Received: 28 December 2019 / Revised: 9 January 2020 / Accepted: 13 January 2020 / Published: 15 January 2020
(This article belongs to the Special Issue Wastewater Treatment Processes)
Leachate is a complex liquid that is often produced from landfills, and it contains hazardous substances that may endanger the surrounding environment if ineffectively treated. In this work, four leachate treatment applications were examined: combined leachate/palm oil mill effluent (POME) (LP), leachate/tannin (LT), pre-(leachate/tannin) followed by post-(leachate/POME) (LT/LP), and pre-(leachate/POME) followed by post-(leachate/tannin) (LP/LT). The aim of this work is to evaluate and compare the performance of these treatment applications in terms of optimizing the physicochemical parameters and removing heavy metals from the leachate. The highest efficiency for the optimization of the most targeted physicochemical parameters and the removal of heavy metals was with the LP/LT process. The results are indicative of three clusters. The first cluster involves raw leachate (cluster 1), the second contains LP and LP/LT (cluster 2), and the third also consists of two treatment applications, namely, LT and LT/LP (cluster 3). The results demonstrate that LP/LT is the most appropriate method for leachate treatment using low-cost agro-industrial materials. View Full-Text
Keywords: landfill; leachate treatment; tannin; coagulation; removal efficiency; heavy metals landfill; leachate treatment; tannin; coagulation; removal efficiency; heavy metals
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Banch, T.J.H.; Hanafiah, M.M.; Alkarkhi, A.F.M.; Amr, S.S.A.; Nizam, N.U.M. Evaluation of Different Treatment Processes for Landfill Leachate Using Low-Cost Agro-Industrial Materials. Processes 2020, 8, 111.

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