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Denison SB, Da Silva PD, Koester CP, Alvarez PJJ, Zygourakis K. Clays play a catalytic role in pyrolytic treatment of crude-oil contaminated soils that is enhanced by ion-exchanged transition metals. JOURNAL OF HAZARDOUS MATERIALS 2022; 437:129295. [PMID: 35717817 DOI: 10.1016/j.jhazmat.2022.129295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 05/21/2022] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
Pyrolytic treatment of crude-oil contaminated soils offers great potential for rapid remediation without destroying soil fertility with lower energy requirements than incineration. Here, we show that clays impregnated with non-toxic transition metals (iron or copper) can be used as an amendment to decrease the required pyrolytic treatment temperature and time. Amending a weathered crude-oil contaminated soil with 10 % (by weight) of bentonite modified via ion-exchange with Fe or Cu, achieved 99 % removal of residual total petroleum hydrocarbons (TPH) at a pyrolysis temperature of 370 °C with 15-min contact time. Pyrolytic treatment of amended soils at the unprecedentedly low pyrolysis temperature of 300 °C resulted in 87 % TPH removal efficiency with Cu-bentonite and a 93 % with Fe-bentonite. We postulate that the transition metals catalyzed the pyrolysis reactions at lower onset temperatures. This hypothesis is supported by thermogravimetric analysis coupled with mass spectrometry, which revealed the release of hydrogen, methyl and propyl ion fragments (markers of pyrolytic degradation products of crude oil) at lower temperatures than those observed for unamended soil. Overall, this work shows proof of concept that metal-impregnated clays can enhance rapid pyro-catalytic treatment of crude-oil contaminated soils and encourages further work to understand the detailed reaction mechanisms and inform process design.
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Affiliation(s)
- Sara B Denison
- Department of Civil and Environmental Engineering, Rice University, Houston, TX 77005, United States
| | - Priscilla Dias Da Silva
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, United States
| | - Caroline P Koester
- Department of Chemistry, Rice University, Houston, TX 77005, United States
| | - Pedro J J Alvarez
- Department of Civil and Environmental Engineering, Rice University, Houston, TX 77005, United States
| | - Kyriacos Zygourakis
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, United States
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2
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Adsorption of Naphthalene on Clay Minerals: A Molecular Dynamics Simulation Study. MATERIALS 2022; 15:ma15155120. [PMID: 35897553 PMCID: PMC9331961 DOI: 10.3390/ma15155120] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/11/2022] [Accepted: 07/20/2022] [Indexed: 11/18/2022]
Abstract
Naphthalene, as one of the representative polycyclic aromatic hydrocarbons, widely exists in contaminated sites and is a potential threat to human health due to its high mobility in soil. The interaction between naphthalene and clay minerals is of great significance to the environmental behavior of naphthalene and the design of remediation technology. In this study, montmorillonite and kaolinite were selected as representative clay minerals. Naphthalene adsorption behavior on mineral surfaces and water-wet kaolinite surfaces was investigated using molecular dynamics (MD) simulation. The interaction energy was calculated to represent the interaction between naphthalene and soil fractions, and the relative concentration and density distribution of naphthalene was analyzed to describe the distribution of naphthalene on the clay surfaces. The self-diffusion coefficient of naphthalene was obtained to represent its mobility under different water content. The electron density calculation was performed to reveal the different adsorption behavior of naphthalene on different surfaces of kaolinite. The simulation results show that montmorillonite had a stronger interaction with naphthalene due to larger electrostatic interaction energy compared to kaolinite, and naphthalene distributed more intensively on the montmorillonite surface. With regards to kaolinite, naphthalene tended to be absorbed on the alumina octahedral surface rather than the silicon tetrahedral surface due to the weak hydron bond interaction. The results indicate that water impeded the adsorption of naphthalene, and the optimal initial thickness of water film, which was 10 Å, was put forward for the application of thermal remediation technology. Furthermore, the average interaction energies between water and mineral surfaces largely depended on the water content, and the competitive adsorption between water and naphthalene only occurred under absorbed and bound water conditions. Overall, the knowledge of naphthalene–soil fractions interaction gained in this study is critical to the understanding of the environmental behavior of naphthalene and the reference for remediation technology.
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Liu Y, Zou Y, Kong L, Bai G, Luo F, Liu Z, Wang C, Ding Z, He F, Wu Z, Zhang Y. Effects of bentonite on the growth process of submerged macrophytes and sediment microenvironment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 287:112308. [PMID: 33706092 DOI: 10.1016/j.jenvman.2021.112308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/22/2021] [Accepted: 03/01/2021] [Indexed: 06/12/2023]
Abstract
The effects of clay mineral bentonite on the growth process of submerged macrophyte V. spiralis and sediment microenvironment were investigated in the study for the first time, aiming to determine whether it is suitable for application in the field of ecological restoration. The growth index, and physiological and biochemical index of V. spiralis in the experiments were measured once a month, and the changes of rhizosphere microorganisms and physicochemical properties of sediments were also studied at the same time. The results demonstrated that bentonite can effectively promote the growth of V. spiralis. The treatment groups of RB1/1 and MB1/5 (the mass ratios of bentonite to sediment were 1/1 and 1/5, respectively.) showed the best V. spiralis growth promotion rates which were 18.78%, and 11.79%, respectively. The highest microbial diversity and abundance existed in group of RB10 (the mass ratio of sediment to bentonite was 10/1), in which the OTUs, Shannon, Chao and Ace were 1521.0, 5.20, 1712.26, and 1686.31, respectively. Bentonite was conducive to the propagation of rhizosphere microorganisms, and further changed the physical and chemical properties of the sediment microenvironment. The nutrient elements dissolved from bentonite may be one of the main reasons that promoted the growth of V. spiralis. The purpose of this result is to prove that bentonite can be further applied as sediment improver and growing media in ecological restoration projects in eutrophic shallow lakes.
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Affiliation(s)
- Yunli Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yilingyun Zou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lingwei Kong
- School of Engineering, Westlake University, Hangzhou, Zhejiang, 310024, China
| | - Guoliang Bai
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China
| | - Feng Luo
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Zisen Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Chuan Wang
- Faculty of Resources and Environmental Science, Hubei University, Wuhan, 430062, China
| | - Zimao Ding
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Feng He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Zhenbin Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Yi Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
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Shen Y, Jiao S, Ma Z, Lin H, Gao W, Chen J. Humic acid-modified bentonite composite material enhances urea-nitrogen use efficiency. CHEMOSPHERE 2020; 255:126976. [PMID: 32402890 DOI: 10.1016/j.chemosphere.2020.126976] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/27/2020] [Accepted: 05/03/2020] [Indexed: 06/11/2023]
Abstract
Bentonite was modified by introducing humic acid (HA) into interlayer space of bentonite. The structural and physicochemical properties of modified bentonite were determined by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), X-ray powder diffraction (XRD) and thermogravimetric analysis (TGA). The results showed that HA could enter the bentonite interlayer and increase the interlayer distance. Moreover, we were also investigated the high adsorption capacity and thermodynamics of modified bentonite to NH4+ cations in solutions. Under the same conditions, the NH4+ adsorption efficiency of modified bentonite (96.4%) was 69.2% higher compared with the natural bentonite (57.0%). The pseudo-second order kinetic model well fit the adsorption kinetics of NH4+ on modified bentonite, indicating that the adsorption type was chemical adsorption or chemisorptions. The isotherms fit well with Langmuir model, and the separation factor revealed that NH4+ on modified bentonite belonged to favorable adsorption. Compared with the natural bentonite, the modified bentonite exhibited a much lower leaching loss of NH4+-N and NO3--N in soil. Meanwhile, the loss of nitrogen caused by NH3 volatilization and N2O emission from soil could also be significantly attenuated by the combined application of modified bentonite and urea. The slower nitrogen release in the treatment combining modified bentonite and urea resulted in a greater yield and nitrogen uptake of wheat. Collectively, the modified bentonite could be used as nitrogen fertilizer synergist to enhance the nitrogen use efficiency.
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Affiliation(s)
- Yuwen Shen
- Shandong Academy of Agricultural Sciences, Institute of Agricultural Resources and Environment, Key Laboratory of Wastes Matrix Utilization, Ministry of Agriculture, Shandong Provincial Engineering Research Center of Environmental Protection Fertilizers, Jinan, 250100, PR China; State Key Laboratory of Nutrition Resources Integrated Utilization, Linshu, 276700, PR China.
| | - Shuying Jiao
- College of Resources and Environment, Shandong Agricultural University, Taian, 271018, PR China
| | - Zheng Ma
- Shandong Academy of Agricultural Sciences, Institute of Agricultural Resources and Environment, Key Laboratory of Wastes Matrix Utilization, Ministry of Agriculture, Shandong Provincial Engineering Research Center of Environmental Protection Fertilizers, Jinan, 250100, PR China
| | - Haitao Lin
- Shandong Academy of Agricultural Sciences, Institute of Agricultural Resources and Environment, Key Laboratory of Wastes Matrix Utilization, Ministry of Agriculture, Shandong Provincial Engineering Research Center of Environmental Protection Fertilizers, Jinan, 250100, PR China
| | - Wensheng Gao
- Fruit and Tea Technique Extension Station, Shandong Agriculture Department, Jinan, 250013, China
| | - Jianqiu Chen
- State Key Laboratory of Nutrition Resources Integrated Utilization, Linshu, 276700, PR China
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Dai WJ, Wu P, Liu D, Hu J, Cao Y, Liu TZ, Okoli CP, Wang B, Li L. Adsorption of Polycyclic Aromatic Hydrocarbons from aqueous solution by Organic Montmorillonite Sodium Alginate Nanocomposites. CHEMOSPHERE 2020; 251:126074. [PMID: 32163776 DOI: 10.1016/j.chemosphere.2020.126074] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 01/23/2020] [Accepted: 01/29/2020] [Indexed: 05/21/2023]
Abstract
The adsorption method is generally considered a promising technique to remove inorganic and organic contaminants in an economically and environmentally friendly superior manner. In this study, organic montmorillonite sodium alginate composites were prepared, in which, montmorillonite and cationic surfactant (cetyltrimethylammonium bromide, CTAB) in different added amounts were coagulated with sodium alginate using CaCl2 as the crosslinking agent. The morphological properties of the composites were characterized thoroughly and employed in three typical target pollutants of polycyclic aromatic hydrocarbons (PAHs) (acenaphthene, fluorene, and phenanthrene) by batch adsorption experiments from aqueous solution. The composites provide an efficient alternative for PAHs removals. The composites could be stably separated and regenerated with methyl alcohol. Furthermore, the adsorption kinetic and isotherm data were well described by the Elovich kinetic and the Freundlich isotherm model, respectively. According to these, the adsorption process occurred via multilayer adsorption on the composite's energetically heterogeneous surface. Moreover, pore diffusion and hydrophobicity played a dominant role in the adsorption mechanism. Overall, our study offers a developed adsorbent that has the advantage of being recyclable, low cost, biodegradable and biocompatible for effectively removing PAHs from aqueous solution.
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Affiliation(s)
- Wen-Jing Dai
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, PR China; State Key Laboratory of Environment Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, PR China
| | - Pan Wu
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, PR China
| | - Di Liu
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, PR China
| | - Jian Hu
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China.
| | - Yang Cao
- School of Chemistry and Chemical Engineering, Guizhou University, Guiyang, 550025, PR China
| | - Tao-Ze Liu
- State Key Laboratory of Environment Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, PR China
| | - Chukwunonso Peter Okoli
- Department of Chemistry/Biochemistry, Alex Ekwueme Federal University Ndufu Alike, Ebonyi State, Nigeria
| | - Bing Wang
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, PR China
| | - Ling Li
- State Key Laboratory of Environment Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, PR China
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Mojiri A, Zhou JL, Ohashi A, Ozaki N, Kindaichi T. Comprehensive review of polycyclic aromatic hydrocarbons in water sources, their effects and treatments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 696:133971. [PMID: 31470323 DOI: 10.1016/j.scitotenv.2019.133971] [Citation(s) in RCA: 216] [Impact Index Per Article: 43.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 08/13/2019] [Accepted: 08/17/2019] [Indexed: 05/21/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are principally derived from the incomplete combustion of fossil fuels. This study investigated the occurrence of PAHs in aquatic environments around the world, their effects on the environment and humans, and methods for their removal. Polycyclic aromatic hydrocarbons have a great negative impact on the humans and environment, and can even cause cancer in humans. Use of good methods and equipment are essential to monitoring PAHs, and GC/MS and HPLC are usually used for their analysis in aqueous solutions. In aquatic environments, the PAHs concentrations range widely from 0.03 ng/L (seawater; Southeastern Japan Sea, Japan) to 8,310,000 ng/L (Domestic Wastewater Treatment Plant, Siloam, South Africa). Moreover, bioaccumulation of ∑16PAHs in fish has been reported to range from 11.2 ng/L (Cynoscion guatucupa, South Africa) to 4207.5 ng/L (Saurida undosquamis, Egypt). Several biological, physical and chemical and biological techniques have been reported to treat water contaminated by PAHs, but adsorption and combined treatment methods have shown better removal performance, with some methods removing up to 99.99% of PAHs.
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Affiliation(s)
- Amin Mojiri
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Hiroshima, Japan.
| | - John L Zhou
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Akiyoshi Ohashi
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Hiroshima, Japan
| | - Noriatsu Ozaki
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Hiroshima, Japan
| | - Tomonori Kindaichi
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Hiroshima, Japan
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Li S, Luo P, Wu H, Wei C, Hu Y, Qiu G. Strategies for Improving the Performance and Application of MOFs Photocatalysts. ChemCatChem 2019. [DOI: 10.1002/cctc.201900199] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Shixiong Li
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
- School of Chemical Engineering and Resource RecyclingWuzhou University Wuzhou 543002 P. R. China
| | - Pei Luo
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
| | - Haizhen Wu
- School of Biology and Biological EngineeringSouth China University of Technology Guangzhou 510006 P. R. China
| | - Chaohai Wei
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSouth China University of Technology Guangzhou 510006 P. R. China
| | - Yun Hu
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSouth China University of Technology Guangzhou 510006 P. R. China
| | - Guanglei Qiu
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSouth China University of Technology Guangzhou 510006 P. R. China
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Li S, Sun S, Wu H, Wei C, Hu Y. Effects of electron-donating groups on the photocatalytic reaction of MOFs. Catal Sci Technol 2018. [DOI: 10.1039/c7cy02622f] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Regulating the synthesis of photocatalytic materials at the molecular level could affect the absorption of light and guide the synthesis of highly efficient photocatalysts for the photocatalytic degradation organic pollutants.
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Affiliation(s)
- Shixiong Li
- School of Environment and Energy
- South China University of Technology
- Guangzhou
- P. R. China
| | - Shengli Sun
- School of Biology and Biological Engineering
- South China University of Technology
- Guangzhou
- P. R. China
| | - Haizhen Wu
- School of Biology and Biological Engineering
- South China University of Technology
- Guangzhou
- P. R. China
| | - Chaohai Wei
- School of Environment and Energy
- South China University of Technology
- Guangzhou
- P. R. China
| | - Yun Hu
- School of Environment and Energy
- South China University of Technology
- Guangzhou
- P. R. China
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Oxidative Photodegradation of Pyrene and Fluoranthene by Fe-Based and Zn-Based Fenton Reagents. SUSTAINABILITY 2017. [DOI: 10.3390/su9050870] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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