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Using Calcination Remediation to Stabilize Heavy Metals and Simultaneously Remove Polycyclic Aromatic Hydrocarbons in Soil

Co-contaminated soils containing heavy metals and polycyclic aromatic hydrocarbons (PAHs) are an environmental and human health risk. Research into the remediation of these soils is imperative. In this paper, a novel investigation utilizing calcination technique to stabilize heavy metals and simulta...

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Detalles Bibliográficos
Autores principales: Wang, Peixin, Hu, Xiaojie, He, Qianjia, Waigi, Michael Gatheru, Wang, Jian, Ling, Wanting
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6121654/
https://www.ncbi.nlm.nih.gov/pubmed/30104500
http://dx.doi.org/10.3390/ijerph15081731
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author Wang, Peixin
Hu, Xiaojie
He, Qianjia
Waigi, Michael Gatheru
Wang, Jian
Ling, Wanting
author_facet Wang, Peixin
Hu, Xiaojie
He, Qianjia
Waigi, Michael Gatheru
Wang, Jian
Ling, Wanting
author_sort Wang, Peixin
collection PubMed
description Co-contaminated soils containing heavy metals and polycyclic aromatic hydrocarbons (PAHs) are an environmental and human health risk. Research into the remediation of these soils is imperative. In this paper, a novel investigation utilizing calcination technique to stabilize heavy metals and simultaneously remove PAHs in soil was conducted. Calcination temperature (300–700 °C) was observed to play a dominant role in heavy metal stabilization and PAH removal in soils. However, calcination time (0.5–8 h) had no significant effect on these contaminants during calcination at different temperatures. Considering the remediation cycle requirements and economic costs of engineering, we suggested that the optimal calcination condition for Zn, Cu, naphthalene, and fluoranthene was at 700 °C for 0.5 h, and the corresponding stabilization or removal efficiency values were 96.95%, 98.41%, 98.49%, and 98.04%, respectively. Results indicate that calcination as a remedial strategy exhibits a bright future for practical applications in the simultaneous stabilization of heavy metals and PAH removal from co-contaminated sites.
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spelling pubmed-61216542018-09-07 Using Calcination Remediation to Stabilize Heavy Metals and Simultaneously Remove Polycyclic Aromatic Hydrocarbons in Soil Wang, Peixin Hu, Xiaojie He, Qianjia Waigi, Michael Gatheru Wang, Jian Ling, Wanting Int J Environ Res Public Health Article Co-contaminated soils containing heavy metals and polycyclic aromatic hydrocarbons (PAHs) are an environmental and human health risk. Research into the remediation of these soils is imperative. In this paper, a novel investigation utilizing calcination technique to stabilize heavy metals and simultaneously remove PAHs in soil was conducted. Calcination temperature (300–700 °C) was observed to play a dominant role in heavy metal stabilization and PAH removal in soils. However, calcination time (0.5–8 h) had no significant effect on these contaminants during calcination at different temperatures. Considering the remediation cycle requirements and economic costs of engineering, we suggested that the optimal calcination condition for Zn, Cu, naphthalene, and fluoranthene was at 700 °C for 0.5 h, and the corresponding stabilization or removal efficiency values were 96.95%, 98.41%, 98.49%, and 98.04%, respectively. Results indicate that calcination as a remedial strategy exhibits a bright future for practical applications in the simultaneous stabilization of heavy metals and PAH removal from co-contaminated sites. MDPI 2018-08-13 2018-08 /pmc/articles/PMC6121654/ /pubmed/30104500 http://dx.doi.org/10.3390/ijerph15081731 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Peixin
Hu, Xiaojie
He, Qianjia
Waigi, Michael Gatheru
Wang, Jian
Ling, Wanting
Using Calcination Remediation to Stabilize Heavy Metals and Simultaneously Remove Polycyclic Aromatic Hydrocarbons in Soil
title Using Calcination Remediation to Stabilize Heavy Metals and Simultaneously Remove Polycyclic Aromatic Hydrocarbons in Soil
title_full Using Calcination Remediation to Stabilize Heavy Metals and Simultaneously Remove Polycyclic Aromatic Hydrocarbons in Soil
title_fullStr Using Calcination Remediation to Stabilize Heavy Metals and Simultaneously Remove Polycyclic Aromatic Hydrocarbons in Soil
title_full_unstemmed Using Calcination Remediation to Stabilize Heavy Metals and Simultaneously Remove Polycyclic Aromatic Hydrocarbons in Soil
title_short Using Calcination Remediation to Stabilize Heavy Metals and Simultaneously Remove Polycyclic Aromatic Hydrocarbons in Soil
title_sort using calcination remediation to stabilize heavy metals and simultaneously remove polycyclic aromatic hydrocarbons in soil
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6121654/
https://www.ncbi.nlm.nih.gov/pubmed/30104500
http://dx.doi.org/10.3390/ijerph15081731
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