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Shen X, Wan Y, Dong W, Wei Y, Li T. Experimental study on the biodegradation of naphthalene and phenanthrene by functional bacterial strains in the riparian soil of a binary system. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 223:112603. [PMID: 34371457 DOI: 10.1016/j.ecoenv.2021.112603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 07/27/2021] [Accepted: 08/03/2021] [Indexed: 06/13/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) such as naphthalene (Nap) and phenanthrene (Phe) are organic pollutants of concern owing to their toxicity, carcinogenicity, and teratogenicity. Biodegradation is considered the most economical and efficient process to remediate Nap and Phe. The riparian zone between a river and a riparian aquifer, which is rich in indigenous microorganisms, may be important for PAH remediation. However, few studies have evaluated the ability of indigenous microorganisms to remove Nap and Phe. In this study, focusing on the typical PAHs (Nap and Phe) as target pollutants, the genus-level community structure of Nap- and Phe-degrading bacteria was identified. Batch static and dynamic biodegradation experiments were conducted to explore the biodegradation mechanisms of Nap and Phe in the riparian zone and identify the factors influencing Nap and Phe biodegradation in the binary system (i.e., where Nap and Phe are simultaneously present). According to the genus-level community structure test results, the dominant bacterial genus in the binary system was mainly the Phe-degrading bacteria. The Nap and Phe-biodegradation percentages were 19.20% lower and 19.49% higher, respectively, in the binary system than in the unitary system. The results indicated that functional bacteria can degrade Nap and Phe, and that Nap weakly promoted Phe biodegradation. Additionally, the initial Nap and Phe concentration ratio, hydraulic gradient, and temperature affected Nap and Phe biodegradation. Dynamic biodegradation experiments showed that the biodegradation percentage decreased as the hydraulic gradient increased, and biodegradation percentage of Phe was always higher than that of Nap. According to the results of the dynamic laboratory experiments, the removal percentages of Nap and Phe by indigenous riparian-zone microorganisms were 6.21-16.73% and 13.95-24.45%, respectively. The findings in this study will be useful for alleviation of Nap and Phe pollution in groundwater and will facilitate determination of appropriate treatment measures for groundwater exposed to this type of pollution.
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Affiliation(s)
- Xiaofang Shen
- College of Construction Engineering, Jilin University, Changchun, Jilin 130021, China; Institute of Water Resources and Environment, Jilin University, Changchun, Jilin 130021, China
| | - Yuyu Wan
- Key Laboratory of Groundwater Resources and Environments, Ministry of Education, Jilin University, Changchun Jilin 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, Jilin 130021, China
| | - Weihong Dong
- Key Laboratory of Groundwater Resources and Environments, Ministry of Education, Jilin University, Changchun Jilin 130021, China; Institute of Water Resources and Environment, Jilin University, Changchun, Jilin 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, Jilin 130021, China.
| | - Yujie Wei
- College of Construction Engineering, Jilin University, Changchun, Jilin 130021, China; Institute of Water Resources and Environment, Jilin University, Changchun, Jilin 130021, China
| | - Tong Li
- College of Construction Engineering, Jilin University, Changchun, Jilin 130021, China; Institute of Water Resources and Environment, Jilin University, Changchun, Jilin 130021, China
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Hammershøj R, Birch H, Redman AD, Mayer P. Mixture Effects on Biodegradation Kinetics of Hydrocarbons in Surface Water: Increasing Concentrations Inhibited Degradation whereas Multiple Substrates Did Not. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:3087-3094. [PMID: 30801186 DOI: 10.1021/acs.est.9b00638] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Most biodegradation tests are conducted using single chemicals at high concentrations, although these chemicals are present in the environment as mixtures at low concentrations. A partitioning-based platform was recently developed for biodegradation testing of composed mixtures of hydrophobic chemicals at ng/L to μg/L concentrations. We used this platform to study the concentration and mixture effect on biodegradation kinetics. Biodegradation tests were conducted in 20 mL vials using environmental water samples as inocula. Passive dosing was applied (1) to vary initial test concentrations of individual test compounds and (2) to vary the number of mixture components between 1 and 16. Automated solid-phase microextraction coupled to gas chromatography-mass spectrometry was used to measure substrate depletion relative to abiotic controls. The number of mixture components had no or only a limited effect on the biodegradation half times for three compounds when tested at environmentally relevant concentrations. In contrast, longer lag phases and half lives were observed for single compounds when tested at higher concentrations that approached aqueous solubility. The obtained results support that simultaneous testing of multiple chemicals at low concentrations can accelerate the generation of biodegradation kinetic data, which are more environmentally relevant compared with data from tests conducted with single chemicals at much higher concentrations.
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Affiliation(s)
- Rikke Hammershøj
- Technical University of Denmark , Department of Environmental Engineering , Bygningstorvet, Building 115 , 2800 Kgs. Lyngby , Denmark
| | - Heidi Birch
- Technical University of Denmark , Department of Environmental Engineering , Bygningstorvet, Building 115 , 2800 Kgs. Lyngby , Denmark
| | - Aaron D Redman
- ExxonMobil Biomedical Science, Inc. , Annandale , New Jersey 08801 , United States
| | - Philipp Mayer
- Technical University of Denmark , Department of Environmental Engineering , Bygningstorvet, Building 115 , 2800 Kgs. Lyngby , Denmark
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Spasojević J, Maletić S, Rončević S, Grgić M, Krčmar D, Varga N, Dalmacija B. The role of organic matter and clay content in sediments for bioavailability of pyrene. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 77:439-447. [PMID: 29377828 DOI: 10.2166/wst.2017.551] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Evaluation of the bioavailable fractions of organic contaminants such as polycyclic aromatic hydrocarbons (PAHs) is extremely important for assessing their risk to the environment. This available fraction, which can be solubilised and/or easily extracted, is believed to be the most accessible for bioaccumulation, biosorption and/or transformation. Sediment organic matter (OM) and clay play an important role in the biodegradation and bioavailability of PAHs. The strong association of PAHs with OM and clay in sediments has a great influence not only on their distribution but also on their long-term environmental impact. This paper investigates correlations between bioavailability and the clay and OM contents in sediments. The results show that OM is a better sorbent for pyrene (chosen as a model PAH) and that increasing the OM content reduces the bioavailable fraction. A mathematical model was used to predict the kinetic desorption, and these results showed that the sediment with the lowest content of OM had an Ffast value of 24%, whereas sediment with 20% OM gave a value of 9%. In the experiments with sediments with different clay contents, no clear dependence between clay and rate constants of the fast desorbing fractions was observed, which can be explained by the numerous possible interactions at the molecular level.
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Affiliation(s)
- Jelena Spasojević
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovica 3, 21000 Novi Sad, Serbia E-mail:
| | - Snežana Maletić
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovica 3, 21000 Novi Sad, Serbia E-mail:
| | - Srđan Rončević
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovica 3, 21000 Novi Sad, Serbia E-mail:
| | - Marko Grgić
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovica 3, 21000 Novi Sad, Serbia E-mail:
| | - Dejan Krčmar
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovica 3, 21000 Novi Sad, Serbia E-mail:
| | - Nataša Varga
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovica 3, 21000 Novi Sad, Serbia E-mail:
| | - Božo Dalmacija
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovica 3, 21000 Novi Sad, Serbia E-mail:
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Baboshin M, Ivashina T, Chernykh A, Golovleva L. Comparison of the substrate specificity of two ring-hydroxylating dioxygenases from Sphingomonas sp. VKM B-2434 to polycyclic aromatic hydrocarbons. Biodegradation 2014; 25:693-703. [PMID: 24874927 DOI: 10.1007/s10532-014-9692-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 05/09/2014] [Indexed: 11/25/2022]
Abstract
The genes of two ring-hydroxylating dioxygenases (RHDs) of Sphingomonas sp. VKM B-2434 were cloned and expressed in Escherichia coli. The relative values of the RHD specificity constants were estimated for six polycyclic aromatic hydrocarbons (PAHs) based on the kinetics of PAH mixture conversion by the recombinant strains. The substrate specificity profiles of the enzymes were found to be very different. Dioxygenase ArhA was the most specific to acenaphthylene and showed a low specificity to fluoranthene. Dioxygenase PhnA was the most specific to anthracene and phenanthrene and showed a considerable specificity to fluoranthene. Knockout derivatives of Sphingomonas sp. VKM B-2434 lacking ArhA, PhnA, and both dioxygenases were constructed. PAH degradation by the single-knockout mutants was in agreement with the substrate specificity of the RHD remaining intact. Double-knockout mutant lacking both enzymes was unable to oxidize PAHs. A mutant form of dioxygenase ArhA with altered substrate specificity was described.
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Affiliation(s)
- Mikhail Baboshin
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms RAS, Prospekt Nauki 5, Pushchino, Moscow Region, Russia
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Vilcáez J, Li L, Hubbard SS. A new model for the biodegradation kinetics of oil droplets: application to the Deepwater Horizon oil spill in the Gulf of Mexico. GEOCHEMICAL TRANSACTIONS 2013; 14:4. [PMID: 24138161 PMCID: PMC4015121 DOI: 10.1186/1467-4866-14-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 10/09/2013] [Indexed: 05/22/2023]
Abstract
Oil biodegradation by native bacteria is one of the most important natural processes that can attenuate the environmental impacts of marine oil spills. Existing models for oil biodegradation kinetics are mostly for dissolved oil. This work developed a new mathematical model for the biodegradation of oil droplets and applied the model to estimate the time scale for oil biodegradation under conditions relevant to the Deepwater Horizon oil spill in the Gulf of Mexico. In the model, oil is composed of droplets of various sizes following the gamma function distribution. Each oil droplet shrinks during the microbe-mediated degradation at the oil-water interface. Using our developed model, we find that the degradation of oil droplets typically goes through two stages. The first stage is characterized by microbial activity unlimited by oil-water interface with higher biodegradation rates than that of the dissolved oil. The second stage is governed by the availability of the oil-water interface, which results in much slower rates than that of soluble oil. As a result, compared to that of the dissolved oil, the degradation of oil droplets typically starts faster and then quickly slows down, ultimately reaching a smaller percentage of degraded oil in longer time. The availability of the water-oil interface plays a key role in determining the rates and extent of degradation. We find that several parameters control biodegradation rates, including size distribution of oil droplets, initial microbial concentrations, initial oil concentration and composition. Under conditions relevant to the Deepwater Horizon spill, we find that the size distribution of oil droplets (mean and coefficient of variance) is the most important parameter because it determines the availability of the oil-water interface. Smaller oil droplets with larger variance leads to faster and larger extent of degradation. The developed model will be useful for evaluating transport and fate of spilled oil, different remediation strategies, and risk assessment.
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Affiliation(s)
- Javier Vilcáez
- John and Willie Leone Family Department of Energy and Mineral Engineering, The Pennsylvania State University, University Park, PA 16802, USA
- EMS Energy Institute, The Pennsylvania State University, University Park, PA 16802, USA
- Currently at the University of Tokyo, Tokyo, Japan
| | - Li Li
- John and Willie Leone Family Department of Energy and Mineral Engineering, The Pennsylvania State University, University Park, PA 16802, USA
- EMS Energy Institute, The Pennsylvania State University, University Park, PA 16802, USA
- Earth and Environmental Systems Institute (EESI), The Pennsylvania State University, University Park, PA 16802, USA
| | - Susan S Hubbard
- Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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Krastanov A, Alexieva Z, Yemendzhiev H. Microbial degradation of phenol and phenolic derivatives. Eng Life Sci 2013. [DOI: 10.1002/elsc.201100227] [Citation(s) in RCA: 144] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Albert Krastanov
- Department of Biotechnology; University of Food Technologies; Plovdiv; Bulgaria
| | - Zlatka Alexieva
- Institute of Microbiology; Bulgarian Academy of Sciences; Sofia; Bulgaria
| | - Husein Yemendzhiev
- Department of Water Technology; University “Prof. Asen Zlatarov”; Burgas; Bulgaria
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Baboshin MA, Golovleva LA. Aerobic bacterial degradation of polycyclic aromatic hydrocarbons (PAHs) and its kinetic aspects. Microbiology (Reading) 2012. [DOI: 10.1134/s0026261712060021] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Chen JL, Wong MH, Wong YS, Tam NFY. Modeling sorption and biodegradation of phenanthrene in mangrove sediment slurry. JOURNAL OF HAZARDOUS MATERIALS 2011; 190:409-415. [PMID: 21474240 DOI: 10.1016/j.jhazmat.2011.03.060] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2010] [Revised: 03/01/2011] [Accepted: 03/16/2011] [Indexed: 05/30/2023]
Abstract
A mathematical model, combining both sorption and biodegradation process, was developed to predict the biodegradation of phenanthrene by Sphingomonas sp. in different sediment slurries. The model includes two sorption parameters, α (the partition coefficient) and 1/K (the diffusion resistance); a kinetic parameter k (the first order rate constant); and a sediment parameter, A(V) (the specific sediment surface area in unit volume of slurry). These parameters were evaluated and verified in three types of sediment slurry systems (namely sandy clay loam Ho Chung sediment with fastest degradation, sandy Kei Ling Ha sediment with medium degradation, and clay Mai Po sediment with slowest degradation) at different initial phenanthrene concentrations. High R(2) values, ranging from 0.935 to 0.969, were obtained. Based on this integrated sorption-biodegradation model, the phenanthrene biodegradation in any sediment slurry could be predicted as long as the parameters of the specific sediment surface area in unit volume of slurry, total organic carbon and clay content were measured.
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Affiliation(s)
- Jian Lin Chen
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
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Baboshin M, Golovleva L. Multisubstrate kinetics of PAH mixture biodegradation: analysis in the double-logarithmic plot. Biodegradation 2010; 22:13-23. [DOI: 10.1007/s10532-010-9370-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Accepted: 05/04/2010] [Indexed: 11/28/2022]
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Kanaly RA, Harayama S. Advances in the field of high-molecular-weight polycyclic aromatic hydrocarbon biodegradation by bacteria. Microb Biotechnol 2010; 3:136-64. [PMID: 21255317 PMCID: PMC3836582 DOI: 10.1111/j.1751-7915.2009.00130.x] [Citation(s) in RCA: 138] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2009] [Revised: 05/22/2009] [Accepted: 05/26/2009] [Indexed: 11/26/2022] Open
Abstract
Interest in understanding prokaryotic biotransformation of high-molecular-weight polycyclic aromatic hydrocarbons (HMW PAHs) has continued to grow and the scientific literature shows that studies in this field are originating from research groups from many different locations throughout the world. In the last 10 years, research in regard to HMW PAH biodegradation by bacteria has been further advanced through the documentation of new isolates that represent diverse bacterial types that have been isolated from different environments and that possess different metabolic capabilities. This has occurred in addition to the continuation of in-depth comprehensive characterizations of previously isolated organisms, such as Mycobacterium vanbaalenii PYR-1. New metabolites derived from prokaryotic biodegradation of four- and five-ring PAHs have been characterized, our knowledge of the enzymes involved in these transformations has been advanced and HMW PAH biodegradation pathways have been further developed, expanded upon and refined. At the same time, investigation of prokaryotic consortia has furthered our understanding of the capabilities of microorganisms functioning as communities during HMW PAH biodegradation.
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Affiliation(s)
- Robert A Kanaly
- Department of Genome Systems, Faculty of Bionanoscience, Yokohama City University, 22-2 Seto, Kanazawa-ku, Kanagawa-ken, Yokohama 236-0027, Japan.
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