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Deary ME, Ekumankama CC, Cummings SP. Development of a novel kinetic model for the analysis of PAH biodegradation in the presence of lead and cadmium co-contaminants. JOURNAL OF HAZARDOUS MATERIALS 2016; 307:240-252. [PMID: 26785214 DOI: 10.1016/j.jhazmat.2015.12.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 11/16/2015] [Accepted: 12/09/2015] [Indexed: 06/05/2023]
Abstract
We report on the results of a 40 week study in which the biodegradation of 16 US EPA polycyclic aromatic hydrocarbons (PAHs) was followed in microcosms containing soil of high organic carbon content (11%) in the presence and absence of lead and cadmium co-contaminants. The total spiked PAH concentration was 2166mg/kg. Mercury amendment was also made to give an abiotic control. A novel kinetic model has been developed to explain the observed biphasic nature of PAH degradation. The model assumes that PAHs are distributed across soil phases of varying degrees of bioaccessibility. The results of the analysis suggest that overall percentage PAH loss is dependent on the respective rates at which the PAHs (a) are biodegraded by soil microorganisms in pore water and bioaccessible soil phases and (b) migrate from bioaccessible to non-bioaccessible soil phases. In addition, migration of PAHs to non-bioaccessible and non-Soxhlet-extractable soil phases associated with the humin pores gives rise to an apparent removal process. The presence of metal co-contaminants shows a concentration dependent inhibition of the biological degradation processes that results in a reduction in overall degradation. Lead appears to have a marginally greater inhibitory effect than cadmium.
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Affiliation(s)
- Michael E Deary
- Department of Geography,Faculty of Engineering and Environment, Northumbria University, Ellison Building, Newcastle upon Tyne NE1 8ST, United Kingdom.
| | - Chinedu C Ekumankama
- Department of Geography,Faculty of Engineering and Environment, Northumbria University, Ellison Building, Newcastle upon Tyne NE1 8ST, United Kingdom
| | - Stephen P Cummings
- Faculty of Health and Life Sciences, Northumbria University, Ellison Building, Newcastle upon Tyne NE1 8ST, United Kingdom
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Wang S, Guo S, Li F, Yang X, Teng F, Wang J. Effect of alternating bioremediation and electrokinetics on the remediation of n-hexadecane-contaminated soil. Sci Rep 2016; 6:23833. [PMID: 27032838 PMCID: PMC4817206 DOI: 10.1038/srep23833] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Accepted: 03/15/2016] [Indexed: 12/02/2022] Open
Abstract
This study demonstrated the highly efficient degradation of n-hexadecane in soil, realized by alternating bioremediation and electrokinetic technologies. Using an alternating technology instead of simultaneous application prevented competition between the processes that would lower their efficiency. For the consumption of the soil dissolved organic matter (DOM) necessary for bioremediation by electrokinetics, bioremediation was performed first. Because of the utilization and loss of the DOM and water-soluble ions by the microbial and electrokinetic processes, respectively, both of them were supplemented to provide a basic carbon resource, maintain a high electrical conductivity and produce a uniform distribution of ions. The moisture and bacteria were also supplemented. The optimal DOM supplement (20.5 mg·kg−1 glucose; 80–90% of the total natural DOM content in the soil) was calculated to avoid competitive effects (between the DOM and n-hexadecane) and to prevent nutritional deficiency. The replenishment of the water-soluble ions maintained their content equal to their initial concentrations. The degradation rate of n-hexadecane was only 167.0 mg·kg−1·d−1 (1.9%, w/w) for the first 9 days in the treatments with bioremediation or electrokinetics alone, but this rate was realized throughout the whole process when the two technologies were alternated, with a degradation of 78.5% ± 2.0% for the n-hexadecane after 45 days of treatment.
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Affiliation(s)
- Sa Wang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuhai Guo
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
| | - Fengmei Li
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
| | | | - Fei Teng
- Shenyang University, Shenyang 110014, China
| | - Jianing Wang
- Institute of Biology, Shandong Academy of Sciences, Jinan 250014, China
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Mousset E, Huguenot D, van Hullebusch ED, Oturan N, Guibaud G, Esposito G, Oturan MA. Impact of electrochemical treatment of soil washing solution on PAH degradation efficiency and soil respirometry. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 211:354-62. [PMID: 26796745 DOI: 10.1016/j.envpol.2016.01.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 11/27/2015] [Accepted: 01/08/2016] [Indexed: 05/15/2023]
Abstract
The remediation of a genuinely PAH-contaminated soil was performed, for the first time, through a new and complete investigation, including PAH extraction followed by advanced oxidation treatment of the washing solution and its recirculation, and an analysis of the impact of the PAH extraction on soil respirometry. The study has been performed on the remediation of genuine PAH-contaminated soil, in the following three steps: (i) PAH extraction with soil washing (SW) techniques, (ii) PAH degradation with an electro-Fenton (EF) process, and (iii) recirculation of the partially oxidized effluent for another SW cycle. The following criteria were monitored during the successive washing cycles: PAH extraction efficiency, PAH oxidation rates and yields, extracting agent recovery, soil microbial activity, and pH of soil. Two representative extracting agents were compared: hydroxypropyl-beta-cyclodextrin (HPCD) and a non-ionic surfactant, Tween(®) 80. Six PAH with different numbers of rings were monitored: acenaphthene (ACE), phenanthrene (PHE), fluoranthene (FLA), pyrene (PYR), benzo(a)pyrene (BaP), and benzo(g,h,i)perylene (BghiP). Tween(®) 80 showed much better PAH extraction efficiency (after several SW cycles) than HPCD, regardless of the number of washing cycles. Based on successive SW experiments, a new mathematical relation taking into account the soil/water partition coefficient (Kd*) was established, and could predict the amount of each PAH extracted by the surfactant with a good correlation with experimental results (R(2) > 0.975). More HPCD was recovered (89%) than Tween(®) 80 (79%), while the monitored pollutants were completely degraded (>99%) after 4 h and 8 h, respectively. Even after being washed with partially oxidized solutions, the Tween(®) 80 solutions extracted significantly more PAH than HPCD and promoted better soil microbial activity, with higher oxygen consumption rates. Moreover, neither the oxidation by-products nor the acidic media (pH approximately 3) of the partially oxidized solution inhibited the general soil microbial activity during the washing cycle.
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Affiliation(s)
- Emmanuel Mousset
- Université Paris-Est, Laboratoire Géomatériaux et Environnement (LGE), EA 4508, UPEM, 5 bd Descartes, 77454 Marne-la-Vallée Cedex 2, France
| | - David Huguenot
- Université Paris-Est, Laboratoire Géomatériaux et Environnement (LGE), EA 4508, UPEM, 5 bd Descartes, 77454 Marne-la-Vallée Cedex 2, France
| | - Eric D van Hullebusch
- Université Paris-Est, Laboratoire Géomatériaux et Environnement (LGE), EA 4508, UPEM, 5 bd Descartes, 77454 Marne-la-Vallée Cedex 2, France
| | - Nihal Oturan
- Université Paris-Est, Laboratoire Géomatériaux et Environnement (LGE), EA 4508, UPEM, 5 bd Descartes, 77454 Marne-la-Vallée Cedex 2, France
| | - Gilles Guibaud
- Université de Limoges, Groupement de Recherche Eau Sol Environnement - EA 4330, 123 Avenue A. Thomas, 87060 Limoges Cedex, France
| | - Giovanni Esposito
- University of Cassino and the Southern Lazio, Department of Civil and Mechanical Engineering, Via Di Biasio, 43 - 03043 Cassino (FR), Italy
| | - Mehmet A Oturan
- Université Paris-Est, Laboratoire Géomatériaux et Environnement (LGE), EA 4508, UPEM, 5 bd Descartes, 77454 Marne-la-Vallée Cedex 2, France.
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Mena E, Villaseñor J, Cañizares P, Rodrigo MA. Effect of electric field on the performance of soil electro-bioremediation with a periodic polarity reversal strategy. CHEMOSPHERE 2016; 146:300-307. [PMID: 26735730 DOI: 10.1016/j.chemosphere.2015.12.053] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Revised: 12/15/2015] [Accepted: 12/16/2015] [Indexed: 06/05/2023]
Abstract
In this work, it is studied the effect of the electric fields (within the range 0.0-1.5 V cm(-1)) on the performance of electrobioremediation with polarity reversal, using a bench scale plant with diesel-spiked kaolinite with 14-d long tests. Results obtained show that the periodic changes in the polarity of the electric field results in a more efficient treatment as compared with the single electro-bioremediation process, and it does not require the addition of a buffer to keep the pH within a suitable range. The soil heating was not very important and it did not cause a change in the temperature of the soil up to values incompatible with the life of microorganisms. Low values of water transported by the electro-osmosis process were attained with this strategy. After only 14 d of treatment, by using the highest electric field studied in this work (1.5 V cm(-1)), up to 35.40% of the diesel added at the beginning of the test was removed, value much higher than the 10.5% obtained by the single bioremediation technology in the same period.
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Affiliation(s)
- E Mena
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, Research Institute for Chemical and Environmental Technology (ITQUIMA), Universidad de Castilla La Mancha, Campus Universitario s/n.13071, Ciudad Real, Spain
| | - J Villaseñor
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, Research Institute for Chemical and Environmental Technology (ITQUIMA), Universidad de Castilla La Mancha, Campus Universitario s/n.13071, Ciudad Real, Spain
| | - P Cañizares
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, Research Institute for Chemical and Environmental Technology (ITQUIMA), Universidad de Castilla La Mancha, Campus Universitario s/n.13071, Ciudad Real, Spain
| | - M A Rodrigo
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, Research Institute for Chemical and Environmental Technology (ITQUIMA), Universidad de Castilla La Mancha, Campus Universitario s/n.13071, Ciudad Real, Spain.
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Chen S, Yin H, Tang S, Peng H, Liu Z, Dang Z. Metabolic biotransformation of copper-benzo[a]pyrene combined pollutant on the cellular interface of Stenotrophomonas maltophilia. BIORESOURCE TECHNOLOGY 2016; 204:26-31. [PMID: 26771922 DOI: 10.1016/j.biortech.2015.12.068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Revised: 11/30/2015] [Accepted: 12/22/2015] [Indexed: 06/05/2023]
Abstract
Previous studies have confirmed that Stenotrophomonas maltophilia can bind an appreciable amount of Cu(II) and degrade BaP. However, the removal mechanisms of Cu(II) coexisted with BaP by S. maltophilia are still unclear. In this study, the micro-interaction of contaminants on the cellular surface was investigated. The results indicated that carboxyl groups played an important role in the binding of copper to the thallus and that the cell walls were the main adsorption sites. Nevertheless, these reactive groups had no obvious effect on the uptake of BaP. Instead, the disruption and modification of cell walls accelerated transportation of BaP across the membrane into cells. The observation of SEM-EDS confirmed that Cu(II) would be adsorbed and precipitated onto the cell surface but would also be removed by extracellular precipitation when BaP coexisted. And the XPS analysis reflected that part of Cu(II) bound onto biosorbents changed into Cu(I) and Cu.
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Affiliation(s)
- Shuona Chen
- College of Natural Resources and Environment of South China Agricultural University, Guangzhou 510632, China; Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Hua Yin
- Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
| | - Shaoyu Tang
- Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Hui Peng
- Department of Chemistry, School of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Zehua Liu
- Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Zhi Dang
- Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
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56
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Risco C, Rodrigo S, López-Vizcaíno R, Sáez C, Cañizares P, Navarro V, Rodrigo MA. Electrokinetic flushing with surrounding electrode arrangements for the remediation of soils that are polluted with 2,4-D: A case study in a pilot plant. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 545-546:256-265. [PMID: 26747990 DOI: 10.1016/j.scitotenv.2015.12.065] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 12/14/2015] [Accepted: 12/15/2015] [Indexed: 06/05/2023]
Abstract
This work aimed to evaluate electrokinetic soil flushing (EKSF) technologies for the removal of 2,4-dichlorophenoxyacetic acid (2,4-D) from spiked soils using an electrode configuration consisting of one cathode surrounded by six anodes (1c6a) and one anode surrounded by 6 cathodes (1a6c). Experiments were conducted for over one month in a bench-scale set-up (175 dm(3) of capacity) that was completely automated and operated at a constant electric field (1.0V cm(-1)). The electrical current, temperature, pH, moisture and pollutant concentration in electrolyte wells were monitored daily, and at the end of the experiments, an in-depth sectioned analysis of the complete soil section (post-mortem analysis) was conducted. Despite the geometric similarity, the two strategies led to very different results mainly in terms of water and herbicide mobilization, whereas pH and conductivity do not depend strongly on the electrode configuration. The volume of water extracted from cathodes with 1a6c is seven times higher than that of the 1c6a strategy. Herbicide was transported to the anode wells by electromigration and then dragged toward the cathode wells by electro-osmotic fluxes, with the first process being much more important. The configuration 1c6a was the most efficient and attained a transfer of 70% of the herbicide contained in the soil to flushing water in 35 days. These results outperform those obtained by the configuration 1a6c, for which less than 8% of the herbicide was transferred to flushing fluids in a much longer time (58 days).
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Affiliation(s)
- C Risco
- Department of Chemical Engineering, Instituto de Tecnologías Química y Medioambiental, University of Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - S Rodrigo
- Department of Chemical Engineering, Instituto de Tecnologías Química y Medioambiental, University of Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - R López-Vizcaíno
- Department of Chemical Engineering, Instituto de Tecnologías Química y Medioambiental, University of Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - C Sáez
- Department of Chemical Engineering, Facultad de Ciencias y Tecnologías Químicas, University of Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - P Cañizares
- Department of Chemical Engineering, Facultad de Ciencias y Tecnologías Químicas, University of Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - V Navarro
- Geoenvironmental Group, Civil Engineering School, University of Castilla-La Mancha, Avda. Camilo José Cela s/n, 13071 Ciudad Real, Spain
| | - M A Rodrigo
- Department of Chemical Engineering, Facultad de Ciencias y Tecnologías Químicas, University of Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain.
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57
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Liang X, Guo C, Wei Y, Lin W, Yi X, Lu G, Dang Z. Cosolubilization synergism occurrence in codesorption of PAH mixtures during surfactant-enhanced remediation of contaminated soil. CHEMOSPHERE 2016; 144:583-590. [PMID: 26397474 DOI: 10.1016/j.chemosphere.2015.09.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 07/07/2015] [Accepted: 09/08/2015] [Indexed: 06/05/2023]
Abstract
Surfactant-enhanced remediation (SER) has been widely applied in decontaminating PAH-polluted soil. Most researches focus on evaluating washing efficiency without considering pollutants' mutual interaction. This study aims to investigate cosolubilization effect between phenanthrene (Phe) and pyrene (Pyr) in nonionic surfactant Triton X-100 (TX100) solution on their codesorption performance from soil. Cosolubilization experiment showed that, when cosolubilized, solubility of Phe and Pyr in TX100 increased by 15.38% and 18.19%, respectively, as quantified by the deviation ratio of molar solubilization ratio in single and binary solute solubilization systems. The synergism may be due to the enlarged micelle volume caused by PAHs solubilized in the shell region of the micelle. The cosolubilization effect was further observed in the soil washing process. The strengthened TX100 solubilization capacity towards Phe and Pyr could increase the two PAHs' codesorption efficiency from soil, accompanied by synergistic extent of 6-15%. However, synergism in codesorption was weaker than that observed in the cosolubilization system, which may be related to surfactant loss to soil and PAH partition into soil organic matter and the sorbed surfactants. The improved remediation performance during codesorption of mixed PAHs implies the significance of combining PAHs' mutual interaction into evaluating SER, which may reduce the surfactant washing concentration and save remediation cost.
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Affiliation(s)
- Xujun Liang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
| | - Chuling Guo
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China.
| | - Yanfu Wei
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
| | - Weijia Lin
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
| | - Xiaoyun Yi
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
| | - Guining Lu
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China.
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58
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Solar-powered electrokinetic remediation for the treatment of soil polluted with the herbicide 2,4-D. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.12.134] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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59
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Mena E, Villaseñor J, Cañizares P, Rodrigo M. Influence of electric field on the remediation of polluted soil using a biobarrier assisted electro-bioremediation process. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.12.133] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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60
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Bouchaaba H, Bellal B, Maachi R, Trari M, Nasrallah N, Mellah A. Optimization of physico-chemical parameters for the photo-oxidation of neutral red on the spinel Co 2 SnO 4. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.06.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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61
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Risco C, Rodrigo S, López-Vizcaíno R, Yustres A, Sáez C, Cañizares P, Navarro V, Rodrigo M. Electrochemically assisted fences for the electroremediation of soils polluted with 2,4-D: A case study in a pilot plant. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.10.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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62
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Li WW, Yu HQ. Electro-assisted groundwater bioremediation: fundamentals, challenges and future perspectives. BIORESOURCE TECHNOLOGY 2015; 196:677-684. [PMID: 26227572 DOI: 10.1016/j.biortech.2015.07.074] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 07/20/2015] [Accepted: 07/21/2015] [Indexed: 06/04/2023]
Abstract
Bioremediation is envisaged as an important way to abate groundwater contamination, but the need for chemical addition and limited bioavailability of electron donors/acceptors or contaminants hamper its application. As a promising means to enhance such processes, electrochemical system has drawn considerable attention, as it offers distinct advantages in terms of environmental benignity, controllability and treatment efficiency. Meanwhile, there are also potential risks and considerable engineering challenges for its practical application. This review provides a first comprehensive introduction of this emerging technology, discusses its potential applications and current challenges, identifies the knowledge gaps, and outlooks the future opportunities to bring it to field application. The need for a better understanding on the microbiology under electrochemical stimulation and the future requirements on process monitoring, modeling and evaluation protocols and field investigations are highlighted.
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Affiliation(s)
- Wen-Wei Li
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science & Technology of China, Hefei 230026, China
| | - Han-Qing Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science & Technology of China, Hefei 230026, China.
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63
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Iannelli R, Masi M, Ceccarini A, Ostuni M, Lageman R, Muntoni A, Spiga D, Polettini A, Marini A, Pomi R. Electrokinetic remediation of metal-polluted marine sediments: experimental investigation for plant design. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.04.093] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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64
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Yan F, Reible D. Electro-bioremediation of contaminated sediment by electrode enhanced capping. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 155:154-61. [PMID: 25819321 PMCID: PMC4500155 DOI: 10.1016/j.jenvman.2015.03.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Revised: 03/03/2015] [Accepted: 03/13/2015] [Indexed: 05/27/2023]
Abstract
In-situ capping often eliminates or slows natural degradation of hydrocarbon due to the reducing conditions in the sediments. The purpose of this research was to demonstrate a reactive capping technique, an electrode enhanced cap, to produce favorable conditions for hydrocarbon degradation and evaluate this reactive capping technique for contaminated sediment remediation. Two graphite electrodes were placed horizontally at different layers in a cap and connected to external power of 2 V. Redox potentials increased and pH decreased around the anode. Phenanthrene concentration decreased and PAH degradation genes increased in the vicinity of the anode. Phenanthrene concentrations at 0-1 cm sediment beneath the anode decreased to ∼50% of initial concentration over ∼70 days, while phenanthrene levels in control reactor kept unchanged. A degradation model of electrode enhanced capping was developed to simulate reaction-diffusion processes, and model results show that a reaction-dominated region was created in the vicinity of the anode. Although the degradation dominated region was thin, transport processes in a sediment cap environment are typically sufficiently slow to allow this layer to serve as a permeable reactive barrier for hydrocarbon decontamination.
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Affiliation(s)
- Fei Yan
- Department of Civil and Environmental Engineering, Rice University, Houston, TX 77005-1892, USA.
| | - Danny Reible
- Department of Civil and Environmental Engineering, Texas Tech University, Lubbock, TX 79409-1023, USA
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65
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Ammami MT, Portet-Koltalo F, Benamar A, Duclairoir-Poc C, Wang H, Le Derf F. Application of biosurfactants and periodic voltage gradient for enhanced electrokinetic remediation of metals and PAHs in dredged marine sediments. CHEMOSPHERE 2015; 125:1-8. [PMID: 25644703 DOI: 10.1016/j.chemosphere.2014.12.087] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 11/21/2014] [Accepted: 12/22/2014] [Indexed: 06/04/2023]
Abstract
Dredged harbor sediment co-contaminated by heavy metals and polycyclic aromatic hydrocarbons (PAHs) was subjected to enhanced electrokinetic treatments, using a mixture of a chelating agent (citric acid CA) and a surfactant as additives in the processing fluids. We tested various operating conditions (at 1 V cm(-1)): different CA concentrations, applying a periodic voltage gradient, pre-conditioning the sediment with the additives, and replacing the synthetic surfactant Tween 20 (TW20) by biosurfactants. Increasing the CA concentration was favorable for both metal and PAH removal. Applying a periodic voltage gradient associated to a low concentration of CA and TW20 provided the best results for Zn, Cd and Pb removal and also for removal of the 16 priority PAHs. Promising results were obtained with solutions containing rhamnolipids (0.028%) and a viscosin-like biosurfactant produced by Pseudomonas fluorescens Pfa7B (0.025%), associated to a periodic voltage gradient. Although the rhamnolipid and the viscosin-like compounds involved a higher electrical current than TW20, metals were less removed from the sediment. The electroosmotic flow was lower when we used biosurfactants, hence a less effective effect on PAH removal.
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Affiliation(s)
- M T Ammami
- Laboratoire Ondes et Milieux Complexes, UMR CNRS 6294, Université du Havre, 53 rue de Prony, 76600 le Havre, France.
| | - F Portet-Koltalo
- Laboratoire COBRA UMR CNRS 6014, Université de Rouen, 55 rue Saint Germain, 27000 Evreux, France.
| | - A Benamar
- Laboratoire Ondes et Milieux Complexes, UMR CNRS 6294, Université du Havre, 53 rue de Prony, 76600 le Havre, France.
| | - C Duclairoir-Poc
- Laboratoire de microbiologie - signaux et micro-environnement, EA 4312, Université de Rouen, 55 rue Saint Germain, 27000 Evreux, France.
| | - H Wang
- Laboratoire Ondes et Milieux Complexes, UMR CNRS 6294, Université du Havre, 53 rue de Prony, 76600 le Havre, France.
| | - F Le Derf
- Laboratoire COBRA UMR CNRS 6014, Université de Rouen, 55 rue Saint Germain, 27000 Evreux, France.
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Bocos E, Fernández-Costas C, Pazos M, Sanromán MÁ. Removal of PAHs and pesticides from polluted soils by enhanced electrokinetic-Fenton treatment. CHEMOSPHERE 2015; 125:168-174. [PMID: 25577698 DOI: 10.1016/j.chemosphere.2014.12.049] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 12/14/2014] [Accepted: 12/15/2014] [Indexed: 06/04/2023]
Abstract
In this study, electrokinetic-Fenton treatment was used to remediate a soil polluted with PAHs and the pesticide pyrimethanil. Recently, this treatment has emerged as an interesting alternative to conventional soil treatments due to its peculiar advantages, namely the capability of treating fine and low-permeability materials, as well as that of achieving a high yield in the removals of salt content and inorganic and organic pollutants. In a standard electrokinetic-Fenton treatment, the maximum degradation of the pollutant load achieved was 67%, due to the precipitation of the metals near the cathode chamber that reduces the electro-osmotic flow of the system and thus the efficiency of the treatment. To overcome this problem, different complexing agents and pH control in the cathode chamber were evaluated to increase the electro-osmotic flux as well as to render easier the solubilization of the metal species present in the soil. Four complexing agents (ascorbic acid, citric acid, oxalic acid and ethylenediaminetetraacetic acid) in the Fenton-like treatment were evaluated. Results revealed the citric acid as the most suitable complexing agent. Thereby its efficiency was tested as pH controller by flushing it in the cathode chamber (pH 2 and 5). For the latter treatments, near total degradation was achieved after 27 d. Finally, phytotoxicity tests for polluted and treated samples were carried out. The high germination levels of the soil treated under enhanced conditions concluded that nearly complete restoration was achieved.
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Affiliation(s)
- Elvira Bocos
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas, Marcosende 36310, Vigo, Spain
| | - Carmen Fernández-Costas
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas, Marcosende 36310, Vigo, Spain
| | - Marta Pazos
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas, Marcosende 36310, Vigo, Spain
| | - M Ángeles Sanromán
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas, Marcosende 36310, Vigo, Spain.
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Yu K, Huang L, Lou LL, Chang Y, Dong Y, Wang H, Liu S. Degradation of polycyclic aromatic hydrocarbons in crumb tyre rubber catalysed by rutile TiO2 under UV irradiation. ENVIRONMENTAL TECHNOLOGY 2015; 36:1008-1015. [PMID: 25323028 DOI: 10.1080/09593330.2014.971883] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The polycyclic aromatic hydrocarbons (PAHs) in crumb tyre rubber were firstly degraded under UV irradiation in the presence of rutile TiO2 and hydrogen peroxide. The effects of light intensity, catalyst amount, oxidant amount, initial pH value, co-solvent content, and reaction time on degradation efficiency of typical PAHs in crumb tyre rubber were studied. The results indicated that UV irradiation, rutile TiO2, and hydrogen peroxide were beneficial to the degradation of PAHs and co-solvent could accelerate the desorption of PAHs from crumb tyre rubber. Up to 90% degradation efficiency of total 16 PAHs could be obtained in the presence of rutile TiO2 (1 wt%) and hydrogen peroxide (1.0 mL) under 1800 µW cm(-2) UV irradiation for 48 h. The high molecular weight PAHs (such as benz(a)pyrene) were more difficult to be degraded than low molecular weight PAHs (such as phenanthrene, chrysene). Moreover, through the characterization of reaction solution and degradation products via GC-MS, it was proved that the PAHs in crumb tyre rubber were successfully degraded.
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Affiliation(s)
- Kai Yu
- a College of Environmental Science and Engineering , Nankai University , Tianjin 300071 , People's Republic of China
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68
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Xu S, Guo S, Wu B, Li F, Li T. An assessment of the effectiveness and impact of electrokinetic remediation for pyrene-contaminated soil. J Environ Sci (China) 2014; 26:2290-2297. [PMID: 25458684 DOI: 10.1016/j.jes.2014.09.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 04/03/2014] [Accepted: 04/30/2014] [Indexed: 06/04/2023]
Abstract
The effectiveness of electrokinetic remediation for pyrene-contaminated soil was investigated by an anode-cathode separated system using a salt bridge. The applied constant voltage was 24 V and the electrode gap was 24 cm. Two types of soil (sandy soil and loam soil) were selected because of their different conductive capabilities. The initial concentrations of pyrene in these soil samples were 261.3mg/kg sandy soil and 259.8 mg/kg loam soil. After treatment of the sandy soil and loam soil for seven days, 56.8% and 20.1% of the pyrene had been removed respectively. Under the same power supply voltage, the removal of the pollutant from the sandy soil was greater than that from the loam soil, due to the higher current and lower pH. Further analysis revealed that the effectiveness of electrokinetic remediation was affected by the energy expenditure, and was associated with changes in soil properties.
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Affiliation(s)
- Sujuan Xu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; Graduate School of Chinese Academy of Sciences, Beijing 100049, China.
| | - Shuhai Guo
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
| | - Bo Wu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
| | - Fengmei Li
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
| | - Tingting Li
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
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69
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Mena E, Ruiz C, Villaseñor J, Rodrigo MA, Cañizares P. Biological permeable reactive barriers coupled with electrokinetic soil flushing for the treatment of diesel-polluted clay soil. JOURNAL OF HAZARDOUS MATERIALS 2014; 283:131-139. [PMID: 25262485 DOI: 10.1016/j.jhazmat.2014.08.069] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 08/28/2014] [Accepted: 08/31/2014] [Indexed: 06/03/2023]
Abstract
Removal of diesel from spiked kaolin has been studied in the laboratory using coupled electrokinetic soil flushing (EKSF) and bioremediation through an innovative biological permeable reactive barriers (Bio-PRBs) positioned between electrode wells. The results show that this technology is efficient in the removal of pollutants and allows the soil to maintain the appropriate conditions for microorganism growth in terms of pH, temperature, and nutrients. At the same time, EKSF was demonstrated to be a very interesting technology for transporting pollutants, microorganisms and nutrients, although results indicate that careful management is necessary to avoid the depletion of nutrients, which are effectively transported by electro-migration. After two weeks of operation, 30% of pollutants are removed and energy consumption is under 70 kWh m(-3). Main fluxes (electroosmosis and evaporation) and changes in the most relevant parameters (nutrients, diesel, microorganisms, surfactants, moisture conductivity and pH) during treatment and in a complete post-study analysis are studied to give a comprehensive description of the most relevant processes occurring in the soil (pollutant transport and biodegradation).
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Affiliation(s)
- Esperanza Mena
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies & Research Institute for Chemical and Environmental Technology (ITQUIMA), Universidad de Castilla La Mancha, Campus Universitario s/n, 13071, Ciudad Real, Spain
| | - Clara Ruiz
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies & Research Institute for Chemical and Environmental Technology (ITQUIMA), Universidad de Castilla La Mancha, Campus Universitario s/n, 13071, Ciudad Real, Spain
| | - José Villaseñor
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies & Research Institute for Chemical and Environmental Technology (ITQUIMA), Universidad de Castilla La Mancha, Campus Universitario s/n, 13071, Ciudad Real, Spain
| | - Manuel A Rodrigo
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies & Research Institute for Chemical and Environmental Technology (ITQUIMA), Universidad de Castilla La Mancha, Campus Universitario s/n, 13071, Ciudad Real, Spain.
| | - Pablo Cañizares
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies & Research Institute for Chemical and Environmental Technology (ITQUIMA), Universidad de Castilla La Mancha, Campus Universitario s/n, 13071, Ciudad Real, Spain
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Rodrigo J, Boltes K, Esteve-Nuñez A. Microbial-electrochemical bioremediation and detoxification of dibenzothiophene-polluted soil. CHEMOSPHERE 2014; 101:61-65. [PMID: 24332730 DOI: 10.1016/j.chemosphere.2013.11.060] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Revised: 11/19/2013] [Accepted: 11/22/2013] [Indexed: 06/03/2023]
Abstract
Bioremediation is a relatively efficient and cost-effective technology for treating polluted soils. However, the availability of suitable electron acceptors to sustain microbial respiration can reduce the microbial activity. This work aims to evaluate the impact of burying electrically conductive electron acceptors in soil for enhancing the removal of dibenzothiophene (DBT) by native electrogenic microbes. Although this novel approach is based on the use of a microbial electrochemical technology as microbial fuel cells, our goal is not to harvest energy but to maximize bioremediation, so we concluded to name the device as Microbial Electroremediating Cell (MERC). Our results proved that stimulating the microbial electrogenic metabolism, DBT removal was enhanced by more than 3-fold compared to the natural attenuation. On top of that, ecotoxicological test using green algae confirms a decrease of 50% in the toxicity of the treated soil during incubation in MERC, in contrast to the unaltered values detected under natural conditions.
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Affiliation(s)
- Jose Rodrigo
- Department of Chemical Engineering, University of Alcalá, E-28771 Alcalá de Henares, Madrid, Spain
| | - Karina Boltes
- Department of Chemical Engineering, University of Alcalá, E-28771 Alcalá de Henares, Madrid, Spain; Madrid Institute for Advanced Studies in Water Technologies IMDEA-Water, Parque Científico Tecnológico, E-28805 Alcalá de Henares, Madrid, Spain.
| | - Abraham Esteve-Nuñez
- Department of Chemical Engineering, University of Alcalá, E-28771 Alcalá de Henares, Madrid, Spain; Madrid Institute for Advanced Studies in Water Technologies IMDEA-Water, Parque Científico Tecnológico, E-28805 Alcalá de Henares, Madrid, Spain
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72
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López-Vizcaíno R, Alonso J, Cañizares P, León MJ, Navarro V, Rodrigo MA, Sáez C. Electroremediation of a natural soil polluted with phenanthrene in a pilot plant. JOURNAL OF HAZARDOUS MATERIALS 2014; 265:142-150. [PMID: 24361491 DOI: 10.1016/j.jhazmat.2013.11.048] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 11/19/2013] [Accepted: 11/21/2013] [Indexed: 06/03/2023]
Abstract
In this work, a pilot plant with two rows of three electrodes in semipermeable electrolyte wells was used to study the electrokinetic treatment of a natural soil polluted with phenanthrene (PHE). The electrokinetic pilot plant was an open system, i.e., there was direct contact between the soil and air. To increase the solubility of phenanthrene, thereby enhancing its transport through the soil, an aqueous solution of the anionic surfactant dodecyl sulfate was used as a flushing fluid. The results show that at the pilot scale considered, gravity and evaporation fluxes are more relevant than electrokinetic fluxes. Contrary to observations at the laboratory scale, desorption of PHE promoted by electric heating appears to be a significant removal mechanism at the pilot scale. In addition, PHE is dragged by the electroosmotic flow in the cathodic wells and by electrophoresis after interaction of the surfactant with phenanthrene in the anodic wells. In spite of the long treatment time (corresponding to an energy consumption over 500kWhm(-3)), the average removal attained was only 25%.
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Affiliation(s)
- R López-Vizcaíno
- Department of Chemical Engineering, Facultad de Ciencias y Tecnologías Químicas, University of Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - J Alonso
- Geoenvironmental Group, Civil Engineering School, University of Castilla-La Mancha, Avda. Camilo José Cela s/n, 13071 Ciudad Real, Spain
| | - P Cañizares
- Department of Chemical Engineering, Facultad de Ciencias y Tecnologías Químicas, University of Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - M J León
- Geoenvironmental Group, Civil Engineering School, University of Castilla-La Mancha, Avda. Camilo José Cela s/n, 13071 Ciudad Real, Spain
| | - V Navarro
- Geoenvironmental Group, Civil Engineering School, University of Castilla-La Mancha, Avda. Camilo José Cela s/n, 13071 Ciudad Real, Spain
| | - M A Rodrigo
- Department of Chemical Engineering, Facultad de Ciencias y Tecnologías Químicas, University of Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - C Sáez
- Department of Chemical Engineering, Facultad de Ciencias y Tecnologías Químicas, University of Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain.
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Adetunde OT, Mills GA, Olayinka KO, Alo BI. Assessment of occupational exposure to polycyclic aromatic hydrocarbons via involuntary ingestion of soil from contaminated soils in Lagos, Nigeria. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2014; 49:1661-1671. [PMID: 25320853 DOI: 10.1080/10934529.2014.951223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Soils from 12 sites in Lagos area, Nigeria impacted by anthropogenic activities were extracted by ultrasonication and analysed for the concentration of 16 priority polycyclic aromatic hydrocarbons (PAHs) by gas chromatograph-mass spectrometer (GC-MS). The concentration of the sum of PAHs ranged from 0.2 to 254 μg/g at these sites. The sum benzo[a]pyrene-equivalent dose (BaPeq) at the sites ranged from 0.0 (K, forest soil) to 16.7 μg/g (C, the lubricating oil depot soil). Mean daily intake (MDI) for the composite soils samples when compared that of food revealed that some of the individual PAH in samples from sites A (Dump site), C (Depot and loading point for used for black oil), F (Dump site), G(petroleum depot), H (Roadside) and L (Car park) exceeded the recommended the recommended MDI threshold for food, indicating some risk associated with activities on these sites based on this ingestion estimate exceeded value. 8.2 × 10(-6), 7.1 × 10(-7), 1.2 × 10(-4), 4.9 × 10(-7), 7.3 × 10(-7), 1.4 × 10(-5), 7.9 × 10(-5), 4.6 × 10(-6), 3.4 × 10(-7), 2.4 × 10(-7), 2.2 × 10(-7) and 1.1 × 10(-4) estimated theoretical cancer risk (ER) for an adult with a body weight of 70 kg working on sites were composite soil samples A, B, C, D, E, F, G, H, I, J, K and L respectively were sampled. The ER from occupational exposure to surface soil based on oral ingestion were all higher than the target risk of 1 × 10(-6) for normal exposure but were all within the 1 × 10(-4) for extreme exposure for most of the sites except for site C and L. The differences in concentration and risk were related to the different activities (e.g., handling of petroleum products, open burning, bush burning) undertaken at these locations. However, it should be noted here that the resultant risk could be overestimated, since these calculations were based on an exhaustive extraction technique which may be different from uptake by the human guts (bioavailability study).
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Affiliation(s)
- Oluwatoyin T Adetunde
- a Department of Chemistry, Faculty of Science , University of Lagos Akoka , Yaba , Lagos , Nigeria
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74
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Ortega-Calvo JJ, Tejeda-Agredano MC, Jimenez-Sanchez C, Congiu E, Sungthong R, Niqui-Arroyo JL, Cantos M. Is it possible to increase bioavailability but not environmental risk of PAHs in bioremediation? JOURNAL OF HAZARDOUS MATERIALS 2013; 261:733-45. [PMID: 23583067 DOI: 10.1016/j.jhazmat.2013.03.042] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 02/28/2013] [Accepted: 03/16/2013] [Indexed: 05/21/2023]
Abstract
The current poor predictability of end points associated with the bioremediation of polycyclic aromatic hydrocarbons (PAHs) is a large limitation when evaluating its viability for treating contaminated soils and sediments. However, we have seen a wide range of innovations in recent years, such as an the improved use of surfactants, the chemotactic mobilization of bacterial inoculants, the selective biostimulation at pollutant interfaces, rhizoremediation and electrobioremediation, which increase the bioavailability of PAHs but do not necessarily increase the risk to the environment. The integration of these strategies into practical remediation protocols would be beneficial to the bioremediation industry, as well as improve the quality of the environment.
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Affiliation(s)
- J J Ortega-Calvo
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS-CSIC), Apartado 1052, E-41080 Seville, Spain.
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75
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Portet-Koltalo F, Ammami MT, Benamar A, Wang H, Le Derf F, Duclairoir-Poc C. Investigation of the release of PAHs from artificially contaminated sediments using cyclolipopeptidic biosurfactants. JOURNAL OF HAZARDOUS MATERIALS 2013; 261:593-601. [PMID: 23995556 DOI: 10.1016/j.jhazmat.2013.07.062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 07/15/2013] [Accepted: 07/26/2013] [Indexed: 05/05/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) can be preponderant in contaminated sediments and understanding how they are sorbed in the different mineral and organic fractions of the sediment is critical for effective removal strategies. For this purpose, a mixture of seven PAHs was studied at the sediment/water interface and sorption isotherms were obtained. The influence of various factors on the sorption behavior of PAHs was evaluated, such as the nature of minerals, pH, ionic strength and amount of organic matter. Afterwards, the release of PAHs from the sediment by surfactants was investigated. The effectiveness of sodium dodecyl sulfate (SDS) was compared to natural biosurfactants, of cyclolipopeptidic type (amphisin and viscosin-like mixture), produced by two Pseudomonas fluorescens strains. The desorption of PAHs (from naphthalene to pyrene), from the highly retentive kaolinite fraction, could be favored by adding SDS or amphisin, but viscosin-like biosurfactants were only effective for 2-3 ring PAHs desorption (naphthalene to phenanthrene). Moreover, while SDS favors the release of all the target PAHs from a model sediment containing organic matter, the two biosurfactants tested were only effective to desorb the lowest molecular weight PAHs (naphthalene to fluorene).
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Affiliation(s)
- F Portet-Koltalo
- COBRA UMR CNRS 6014, Université de Rouen, 55 rue Saint Germain, 27000 Evreux, France.
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76
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Peng C, Almeira JO, Abou-Shady A. Enhancement of ion migration in porous media by the use of varying electric fields. Sep Purif Technol 2013. [DOI: 10.1016/j.seppur.2013.08.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Pazos M, Iglesias O, Gómez J, Rosales E, Sanromán M. Remediation of contaminated marine sediment using electrokinetic–Fenton technology. J IND ENG CHEM 2013. [DOI: 10.1016/j.jiec.2012.11.010] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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78
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Pan D, Wang J, Chen C, Huang C, Cai Q, Yao S. Ultrasonic assisted extraction combined with titanium-plate based solid phase extraction for the analysis of PAHs in soil samples by HPLC-FLD. Talanta 2013; 108:117-22. [DOI: 10.1016/j.talanta.2013.02.066] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 02/23/2013] [Accepted: 02/27/2013] [Indexed: 11/29/2022]
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79
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Morelli IS, Saparrat MCN, Panno MTD, Coppotelli BM, Arrambari A. Bioremediation of PAH-Contaminated Soil by Fungi. SOIL BIOLOGY 2013. [DOI: 10.1007/978-3-642-33811-3_7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Hussein TA, Ismail ZZ. Desorption of selected PAHs as individuals and as a ternary PAH mixture within a water-soil-nonionic surfactant system. ENVIRONMENTAL TECHNOLOGY 2013; 34:351-361. [PMID: 23530349 DOI: 10.1080/09593330.2012.696718] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Remediation of soil contaminated with polycyclic aromatic hydrocarbons (PAHs) is a major environmental concern due to the toxic and carcinogenic properties of these compounds. Desorption and partitioning of anthracene, fluorene and pyrene within soil-aqueous systems in the presence of the nonionic surfactants, Triton X-100 and Tween 80,were studied. The results showed that the addition of Tween 80 solution at 10 g/L initial concentration enhanced the desorption of PAHs by 49.6%, 10.7% and 70.2% for anthracene, fluorene, and pyrene, respectively, from soil into aqueous phase at 72 h equilibration, while the addition of Triton X-100 could enhance the desorption of PAHs from soil by 59.5%, 17.4% and 86.3% for anthracene, fluorene and pyrene, respectively, at similar experimental conditions. The desorption behaviour of the tested PAHs in a ternary mixture was changed relatively since, in the presence of less hydrophobic solutes, the solubility of more hydrophobic solutes was increased leading to a higher desorption rate. The results showed that hydrophobicity is the primary property that controls PAH desorption from soil and surfactant sorption onto the soils (Qm) in which the latter were found to be 3.75 x 10(-6) and 4.82 x 10(-6) mol/g for Triton X-100 and Tween 80, respectively.
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Affiliation(s)
- Taghreed A Hussein
- Department of Environmental Engineering, University of Baghdad, Baghdad, Iraq
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Lima AT, Kleingeld PJ, Heister K, Loch JG. In situ electro-osmotic cleanup of tar contaminated soil—Removal of polycyclic aromatic hydrocarbons. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2011.12.060] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wang J, Feng X, Anderson CWN, Xing Y, Shang L. Remediation of mercury contaminated sites - A review. JOURNAL OF HAZARDOUS MATERIALS 2012; 221-222:1-18. [PMID: 22579459 DOI: 10.1016/j.jhazmat.2012.04.035] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Revised: 04/08/2012] [Accepted: 04/14/2012] [Indexed: 05/08/2023]
Abstract
Environmental contamination caused by mercury is a serious problem worldwide. Coal combustion, mercury and gold mining activities and industrial activities have led to an increase in the mercury concentration in soil. The objective of this paper is to present an up-to-date understanding of the available techniques for the remediation of soil contaminated with mercury through considering: mercury contamination in soil, mercury speciation in soil; mercury toxicity to humans, plants and microorganisms, and remediation options. This paper describes the commonly employed and emerging techniques for mercury remediation, namely: stabilization/solidification (S/S), immobilization, vitrification, thermal desorption, nanotechnology, soil washing, electro-remediation, phytostabilization, phytoextraction and phytovolatilization.
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Affiliation(s)
- Jianxu Wang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China
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83
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The removal of styrene using a dielectric barrier discharge (DBD) reactor and the analysis of the by-products and intermediates. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0664-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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84
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Viability of phenanthrene biodegradation by an isolated bacterial consortium: optimization and scale-up. Bioprocess Biosyst Eng 2012; 36:133-41. [DOI: 10.1007/s00449-012-0768-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Accepted: 06/03/2012] [Indexed: 10/28/2022]
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85
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Gomes HI, Dias-Ferreira C, Ribeiro AB. Electrokinetic remediation of organochlorines in soil: enhancement techniques and integration with other remediation technologies. CHEMOSPHERE 2012; 87:1077-1090. [PMID: 22386462 DOI: 10.1016/j.chemosphere.2012.02.037] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2011] [Revised: 02/07/2012] [Accepted: 02/10/2012] [Indexed: 05/31/2023]
Abstract
Electrokinetic remediation has been increasingly used in soils and other matrices for numerous contaminants such as inorganic, organic, radionuclides, explosives and their mixtures. Several strategies were tested to improve this technology effectiveness, namely techniques to solubilize contaminants, control soil pH and also couple electrokinetics with other remediation technologies. This review focus in the experimental work carried out in organochlorines soil electroremediation, aiming to systemize useful information to researchers in this field. It is not possible to clearly state what technique is the best, since experimental approaches and targeted contaminants are different. Further research is needed in the application of some of the reviewed techniques. Also a number of technical and environmental issues will require evaluation for full-scale application. Removal efficiencies reported in real contaminated soils are much lower than the ones obtained with spiked kaolinite, showing the influence of other factors like aging of the contamination and adsorption to soil particles, resulting in important challenges when transferring technologies into the field.
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Affiliation(s)
- Helena I Gomes
- CENSE, Departamento de Ciências e Engenharia do Ambiente, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
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86
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Moscoso F, Deive FJ, Longo MA, Sanromán MA. Technoeconomic assessment of phenanthrene degradation by Pseudomonas stutzeri CECT 930 in a batch bioreactor. BIORESOURCE TECHNOLOGY 2012; 104:81-89. [PMID: 22074903 DOI: 10.1016/j.biortech.2011.10.053] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2011] [Revised: 10/14/2011] [Accepted: 10/16/2011] [Indexed: 05/31/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are among the most persistent pollutants that accumulate in natural environment mainly as a result of anthropogenic activities. Therefore, the improvement of the available bank of microbial resources and information is crucial to the proper management of PAHs-polluted sites and effluents. In this work, Pseudomonas stutzeri CECT 930 was selected for aerobically degrading an aqueous effluent containing phenanthrene (PHE). Maximum PHE degradation of 90% was obtained both at flask and stirred tank bioreactor scale. All the experimental data were fitted to logistic and Luedeking and Piret models, and licensed to quantitatively ascertain a stronger dependence on the biomass of the metabolites triggering the bioremediation process. In addition, PHE degradation via protocatechuate pathway was elucidated through GC-MS data. Finally, based on the promising results of biodegradation, a preliminary economic evaluation of this process at industrial scale was approached by means of simulation data obtained with SuperPro Designer.
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Affiliation(s)
- F Moscoso
- Department of Chemical Engineering, University of Vigo, 36310 Vigo, Spain
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87
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Isolation of novel benzo[a]anthracene-degrading microorganisms and continuous bioremediation in an expanded-bed bioreactor. Bioprocess Biosyst Eng 2011; 35:851-5. [DOI: 10.1007/s00449-011-0669-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Accepted: 12/04/2011] [Indexed: 10/14/2022]
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88
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89
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Wan C, Du M, Lee DJ, Yang X, Ma W, Zheng L. Electrokinetic remediation of β-cyclodextrin dissolved petroleum hydrocarbon-contaminated soil using multiple electrodes. J Taiwan Inst Chem Eng 2011. [DOI: 10.1016/j.jtice.2011.04.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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90
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López-Vizcaíno R, Sáez C, Cañizares P, Navarro V, Rodrigo MA. Influence of the Type of Surfactant on the Mobility of Flushing Fluids for Electro-Remediation Processes. SEP SCI TECHNOL 2011. [DOI: 10.1080/01496395.2011.594477] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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91
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Yeung AT. Milestone developments, myths, and future directions of electrokinetic remediation. Sep Purif Technol 2011. [DOI: 10.1016/j.seppur.2011.01.022] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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92
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Novel application of cyclolipopeptide amphisin: feasibility study as additive to remediate polycyclic aromatic hydrocarbon (PAH) contaminated sediments. Int J Mol Sci 2011; 12:1787-806. [PMID: 21673923 PMCID: PMC3111634 DOI: 10.3390/ijms12031787] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 02/15/2011] [Accepted: 03/02/2011] [Indexed: 11/16/2022] Open
Abstract
To decontaminate dredged harbor sediments by bioremediation or electromigration processes, adding biosurfactants could enhance the bioavailability or mobility of contaminants in an aqueous phase. Pure amphisin from Pseudomonas fluorescens DSS73 displays increased effectiveness in releasing polycyclic aromatic hydrocarbons (PAHs) strongly adsorbed to sediments when compared to a synthetic anionic surfactant. Amphisin production by the bacteria in the natural environment was also considered. DSS73’s growth is weakened by three model PAHs above saturation, but amphisin is still produced. Estuarine water feeding the dredged material disposal site of a Norman harbor (France) allows both P. fluorescens DSS73 growth and amphisin production.
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93
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López-Vizcaíno R, Sáez C, Mena E, Villaseñor J, Cañizares P, Rodrigo MA. Electro-osmotic fluxes in multi-well electro-remediation processes. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2011; 46:1549-1557. [PMID: 22029697 DOI: 10.1080/10934529.2011.609458] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In recent years, electrokinetic techniques on a laboratory scale have been studied but few applications have been assessed at full-scale. In this work, a mock-up plant with two rows of three electrodes positioned in semipermeable electrolyte wells has been used to study the electro-osmotic flux distribution. Water accumulated in the cathodic wells when an electric voltage gradient was applied between the two electrode-well rows. Likewise, slight differences in the water flux were observed depending on the position and number of electrodes used and on the voltage gradient applied. Results show that the electro-osmotic flow did not increase proportionally with the number of electrodes used. During the start-up of the study, there was an abrupt change in the current density, pH and conductivity of the soil portions closest to electrodic wells due to electrokinetic processes. These differences can be explained in terms of the complex current distributions from anode and cathode rows.
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Affiliation(s)
- Rubén López-Vizcaíno
- Department of Chemical Engineering, University of Castilla-La Mancha, Ciudad Real, Spain
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94
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Wan C, Du M, Lee DJ, Yang X, Ma W, Zheng L. Electrokinetic remediation and microbial community shift of β-cyclodextrin-dissolved petroleum hydrocarbon-contaminated soil. Appl Microbiol Biotechnol 2010; 89:2019-25. [PMID: 21052991 DOI: 10.1007/s00253-010-2952-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 10/11/2010] [Accepted: 10/11/2010] [Indexed: 11/24/2022]
Abstract
Electrokinetic (EK) migration of β-cyclodextrin (β-CD), which is inclusive of total petroleum hydrocarbon (TPH), is an economically beneficial and environmentally friendly remediation process for oil-contaminated soils. Remediation studies of oil-contaminated soils generally prepared samples using particular TPHs. This study investigates the removal of TPHs from, and electromigration of microbial cells in field samples via EK remediation. Both TPH content and soil respiration declined after the EK remediation process. The strains in the original soil sample included Bacillus sp., Sporosarcina sp., Beta proteobacterium, Streptomyces sp., Pontibacter sp., Azorhizobium sp., Taxeobacter sp., and Williamsia sp. Electromigration of microbial cells reduced the biodiversity of the microbial community in soil following EK remediation. At 200 V m(-1) for 10 days, 36% TPH was removed, with a small population of microbial cells flushed out, demonstrating that EK remediation is effective for the present oil-contaminated soils collected in field.
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Affiliation(s)
- Chunli Wan
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, China
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95
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Colacicco A, De Gioannis G, Muntoni A, Pettinao E, Polettini A, Pomi R. Enhanced electrokinetic treatment of marine sediments contaminated by heavy metals and PAHs. CHEMOSPHERE 2010; 81:46-56. [PMID: 20691460 DOI: 10.1016/j.chemosphere.2010.07.004] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2010] [Revised: 07/07/2010] [Accepted: 07/08/2010] [Indexed: 05/29/2023]
Abstract
Dredged sediments contaminated by heavy metals and PAHs were subjected to both unenhanced and enhanced electrokinetic remediation under different operating conditions, obtained by varying the applied voltage and the type of conditioning agent used at the electrode compartments in individual experiments. While metals were not appreciably mobilized as a result of the unenhanced process, metal removal was found to be significantly improved when both the anodic and cathodic reservoirs were conditioned with the chelating agent EDTA, with removal yields ranging from 28% to 84% depending on the contaminant concerned. As for the effect on organic contaminants, under the conditions tested the electrokinetic treatment displayed a poor removal capacity towards PAHs, even when a surfactant (Tween 80) was used to promote contaminant mobilization, indicating the need for further investigation on this issue. Further research on organics removal from this type of materials through electrokinetic remediation is thus required. Furthermore, a number of technical and environmental issues will also require a careful evaluation with a view to full-scale implementation of electrokinetic sediment remediation. These include controlling side effects during the treatment (such as anodic precipitation, oxidation of the conditioning agent, and evolution of toxic gases), as well as evaluating the potential ecotoxicological effects of the chemical agents used.
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Affiliation(s)
- Antonio Colacicco
- University of Rome "La Sapienza", Department of Hydraulics, Transportation and Roads, Via Eudossiana 18, 00184 Rome, Italy
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