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Cheng Y, Sun H, Yang E, Lv J, Wen B, Sun F, Luo L, Liu Z. Distribution and bioaccessibility of polycyclic aromatic hydrocarbons in industrially contaminated site soils as affected by thermal treatment. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:125129. [PMID: 33486229 DOI: 10.1016/j.jhazmat.2021.125129] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 01/07/2021] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
Thermal treatment can not only efficiently remove volatile pollutants but also distinctly alter the speciation of organic carbon (C) and the behaviors of residual pollutants in contaminated soils. Here we examined the distribution and bioaccessibility of polycyclic aromatic hydrocarbons (PAHs) in industrially contaminated site soils affected by thermal treatment (temperature ranging of 105-650 ℃) using synchrotron-based infrared microspectroscopy and n-butanol extraction (a mild solvent extractant). In the pristine soils, the sequestration and distribution of PAHs were simultaneously controlled by aromatic C, aliphatic C and clay minerals. Desorption efficiency of PAHs was substantially increased with increasing temperature, whereas the residual PAHs were strongly immobilized within their binding sites evidenced by their dramatically decreased bioaccessibility. Aliphatic and carboxylic C were gradually decomposed and/or carbonized with increasing temperature. In contrast, aromatic C remained relatively recalcitrant during the thermal treatment and was the key controlling factor for the desorption of residual PAHs in the soils with either thermal treatment or n-butanol extraction. This study is the first to visualize the changes in the binding sites and bioaccessibility of PAHs induced by thermal treatment, which have important implications for understanding the sequestration mechanisms of organic pollutants in soil and optimizing the remediation technique.
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Affiliation(s)
- Yuan Cheng
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hao Sun
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Entai Yang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jitao Lv
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Bei Wen
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fujun Sun
- College of Land and Environment, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Lei Luo
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Zhengang Liu
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
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Cochran RE, Kubátová A, Kozliak EI. An Approach to the Estimation of Adsorption Enthalpies of Polycyclic Aromatic Hydrocarbons on Particle Surfaces. J Phys Chem A 2016; 120:6029-38. [DOI: 10.1021/acs.jpca.6b03611] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Richard E. Cochran
- Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Alena Kubátová
- Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Evguenii I. Kozliak
- Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
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Brzonova I, Kozliak E, Kubátová A, Chebeir M, Qin W, Christopher L, Ji Y. Kenaf biomass biodecomposition by basidiomycetes and actinobacteria in submerged fermentation for production of carbohydrates and phenolic compounds. BIORESOURCE TECHNOLOGY 2014; 173:352-360. [PMID: 25314665 DOI: 10.1016/j.biortech.2014.09.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 09/12/2014] [Accepted: 09/13/2014] [Indexed: 06/04/2023]
Abstract
The efficiency and dynamics of simultaneous kenaf biomass decomposition by basidiomycetous fungi and actinobacteria were investigated. After 8weeks of incubation, up to 34wt.% of the kenaf biomass was degraded, with the combination of fungi and bacteria being the most efficient. Lignin decomposition accounted for ∼20% of the observed biomass reduction, regardless of the culture used. The remaining 80% of biomass degradation was due to carbohydrate based polymers. Major monosaccharides were produced in tangible yields (26-38%) at different times. Glucose, fructose and xylose were then fully consumed by day 25 while some galactose persisted until day 45. Once monosaccharides were depleted, the production of laccase, manganese-dependent peroxidase and lignin peroxidase enzymes, essential for lignin decomposition, was induced. The products of lignin biodecomposition were shown to be water-soluble and characterized by thermal desorption-pyrolysis-gas chromatography.
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Affiliation(s)
- Ivana Brzonova
- Department of Chemical Engineering, University of North Dakota, Grand Forks, ND, USA
| | - Evguenii Kozliak
- Department of Chemistry, University of North Dakota, Grand Forks, ND, USA
| | - Alena Kubátová
- Department of Chemistry, University of North Dakota, Grand Forks, ND, USA
| | - Michelle Chebeir
- Department of Chemical and Material Engineering, California State Polytechnic University, Pomona, CA, USA
| | - Wensheng Qin
- Department of Biology, Lakehead University, Thunder Bay, ON, Canada
| | - Lew Christopher
- Center for Bioprocessing Research and Development, South Dakota School of Mines & Technology, Rapid City, SD, USA
| | - Yun Ji
- Department of Chemical Engineering, University of North Dakota, Grand Forks, ND, USA
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