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Ghosh A, Sah D, Chakraborty M, Rai JPN. Mechanism and application of bacterial exopolysaccharides: An advanced approach for sustainable heavy metal abolition from soil. Carbohydr Res 2024; 544:109247. [PMID: 39180879 DOI: 10.1016/j.carres.2024.109247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 07/11/2024] [Accepted: 08/20/2024] [Indexed: 08/27/2024]
Abstract
The escalation of heavy metal pollutants in soils and effluents, driven by industrialization and human activities, poses significant environmental and health risks. Conventional remediation methods are often costly and ineffective, prompting a shift towards sustainable alternatives such as biological treatments. Natural biosorbents, including microbial cells and their byproducts, have emerged as promising solutions. One such approach involves leveraging exopolysaccharides (EPS), complex high-molecular-weight biopolymers synthesized by microbes under environmental stress conditions. EPS are intricate organic macromolecules comprising proteins, polysaccharides, uronic acids, humic compounds, and lipids, either located within microbial cells or secreted into their surroundings. Their anionic functional groups enable efficient electrostatic binding of cationic heavy metals, making EPS effective biosorbents for soil remediation. This review thoroughly explores the pivotal role of bacterial EPS in the removal of heavy metals, focusing on EPS biosynthesis mechanisms, the dynamics of interaction with heavy metals, and case studies that illustrate their effectiveness in practical remediation strategies. By highlighting these aspects, the review underscores the innovation and practical implications of EPS-based bioremediation technologies, demonstrating their potential to address critical environmental challenges effectively while paving the way for sustainable environmental management practices. Key findings reveal that EPS exhibit robust metal-binding capacities, facilitated by their anionic functional groups, thereby offering a promising solution for mitigating metal pollution in diverse environmental matrices.
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Affiliation(s)
- Ankita Ghosh
- Department of Environmental Sciences, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, 263145, Uttarakhand, India.
| | - Diksha Sah
- Department of Environmental Sciences, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, 263145, Uttarakhand, India
| | - Moumita Chakraborty
- Department of Environmental Sciences, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, 263145, Uttarakhand, India
| | - J P N Rai
- Department of Environmental Sciences, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, 263145, Uttarakhand, India
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2
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Naiel MAE, Taher ES, Rashed F, Ghazanfar S, Shehata AM, Mohammed NA, Pascalau R, Smuleac L, Ibrahim AM, Abdeen A, Shukry M. The arsenic bioremediation using genetically engineered microbial strains on aquatic environments: An updated overview. Heliyon 2024; 10:e36314. [PMID: 39286167 PMCID: PMC11402758 DOI: 10.1016/j.heliyon.2024.e36314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 08/01/2024] [Accepted: 08/13/2024] [Indexed: 09/19/2024] Open
Abstract
Heavy metal contamination threatens the aquatic environment and human health. Different physical and chemical procedures have been adopted in many regions; however, their adoption is usually limited since they take longer time, are more expensive, and are ineffective in polluted areas with high heavy metal contents. Thus, biological remediation is considered a suitable applicable method for treating contaminates due to its aquatic-friendly features. Bacteria possess an active metabolism that enables them to thrive and develop in highly contaminated water bodies with arsenic (As). They achieve this by utilizing their genetic structure to selectively target As and deactivate its toxic influences. Therefore, this review extensively inspects the bacterial reactions and interactions with As. In addition, this literature demonstrated the potential of certain genetically engineered bacterial strains to upregulate the expression and activity of specific genes associated with As detoxification. The As resistant mechanisms in bacteria exhibit significant variation depending on the genetics and type of the bacterium, which is strongly affected by the physical water criteria of their surrounding aquatic environment. Moreover, this literature has attempted to establish scientific connections between existing knowledge and suggested sustainable methods for removing As from aquatic bodies by utilizing genetically engineered bacterial strains. We shall outline the primary techniques employed by bacteria to bioremediate As from aquatic environments. Additionally, we will define the primary obstacles that face the wide application of genetically modified bacterial strains for As bioremediation in open water bodies. This review can serve as a target for future studies aiming to implement real-time bioremediation techniques. In addition, potential synergies between the bioremediation technology and other techniques are suggested, which can be employed for As bioremediation.
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Affiliation(s)
- Mohammed A E Naiel
- Animal Production Department, Faculty of Agriculture, Zagazig University, Zagazig, 44519, Egypt
| | - Ehab S Taher
- Department of Basic Medical and Dental Sciences, Faculty of Dentistry, Zarqa University, Zarqa, 13110, Jordan
| | - Fatema Rashed
- Department of Basic Medical and Dental Sciences, Faculty of Dentistry, Zarqa University, Zarqa, 13110, Jordan
| | - Shakira Ghazanfar
- National Institute for Genomics Advanced Biotechnology, National Agricultural Research Centre, Park Road, Islamabad, 45500, Pakistan
| | - Abdelrazeq M Shehata
- Department of Animal Production, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
| | - Nourelhuda A Mohammed
- Department of Physiology and Biochemistry, Faculty of Medicine, Mutah University, Mutah, 61710, Al-Karak, Jordan
| | - Raul Pascalau
- Department of Agricultural Technologies, Faculty of Agriculture, University of Life Sciences "King Mihai I" from Timisoara, Romania
| | - Laura Smuleac
- Department of Sustainable Development and Environmental Engineering Faculty of Agriculture, University of Life Sciences "King Mihai I" from Timisoara, Timisoara, Roman, Romania
| | - Ateya Megahed Ibrahim
- Department of Administration and Nursing Education, College of Nursing, Prince Sattam bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia
- Department of Family and Community Health Nursing, Faculty of Nursing, Port-Said University, Egypt
| | - Ahmed Abdeen
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Benha University, Toukh, 13736, Egypt
- Department of Biochemistry, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt
| | - Mustafa Shukry
- Department of Physiology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
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Sevak P, Pushkar B. Arsenic pollution cycle, toxicity and sustainable remediation technologies: A comprehensive review and bibliometric analysis. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 349:119504. [PMID: 37956515 DOI: 10.1016/j.jenvman.2023.119504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 10/11/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023]
Abstract
Arsenic pollution and its allied impacts on health are widely reported and have gained global attention in the last few decades. Although the natural distribution of arsenic is limited, anthropogenic activities have increased its mobility to distant locations, thereby increasing the number of people affected by arsenic pollution. Arsenic has a complex biogeochemical cycle which has a significant role in pollution. Therefore, this review paper has comprehensively analysed the biogeochemical cycle of arsenic which can dictate the occurrence of arsenic pollution. Considering the toxicity and nature of arsenic, the present work has also analysed the current status of arsenic pollution around the world. It is noted that the south of Asia, West-central Africa, west of Europe and Latin America are major hot spots of arsenic pollution. Bibliometric analysis was performed by using scopus database with specific search for keywords such as arsenic pollution, health hazards to obtain the relevant data. Scopus database was searched for the period of 20 years from year 2003-2023 and total of 1839 articles were finally selected for further analysis using VOS viewer. Bibliometric analysis of arsenic pollution and its health hazards has revealed that arsenic pollution is primarily caused by anthropogenic sources and the key sources of arsenic exposure are drinking water, sea food and agricultural produces. Arsenic pollution was found to be associated with severe health hazards such as cancer and other health issues. Thus considering the severity of the issue, few sustainable remediation technologies such as adsorption using microbes, biological waste material, nanomaterial, constructed wetland, phytoremediation and microorganism bioremediation are proposed for treating arsenic pollution. These approaches are environmentally friendly and highly sustainable, thus making them suitable for the current scenario of environmental crisis.
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Affiliation(s)
- Pooja Sevak
- Department of Biotechnology, University of Mumbai, Kalina, Santacruz (E), Mumbai, 400098, Maharashtra, India
| | - Bhupendra Pushkar
- Department of Biotechnology, University of Mumbai, Kalina, Santacruz (E), Mumbai, 400098, Maharashtra, India.
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Ghosh A, Sah D, Chakraborty M, Rai J. Bio-mediated detoxification of heavy metal contaminated soil and phytotoxicity reduction using novel strain of Brevundimonas vancanneytii SMA3. Heliyon 2023; 9:e22344. [PMID: 38058610 PMCID: PMC10696005 DOI: 10.1016/j.heliyon.2023.e22344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/05/2023] [Accepted: 11/09/2023] [Indexed: 12/08/2023] Open
Abstract
Heavy metals pose a serious environmental threat on a global scale due to their toxicity towards livings. Therefore, removing harmful metals from the environment has become more challenging in recent years. The objective of this study is to isolate, examine, and characterize naturally existing bacteria that possess the ability to mitigate and detoxify heavy metals such as cadmium, mercury, and lead. The selected bacteria SMA3 actively demonstrated metal tolerance during screening and was then employed for biosorption study using a lab-scale technique. The bacterium belonged to Brevundimonas sp., according to 16 S rRNA analysis. To enhance the removal efficiency of SMA3, response surface methodology (RSM) was employed, resulting in the identification of optimized conditions (pH 7, temperature 30 °C and shaking speed 120 rpm) for achieving maximum removal percentage (69.5 % of Cd, 58.6 % of Hg, and 85.1 % of Pb) within 72 h. The structural changes induced by microbial treatment were demonstrated by comparing the findings of FESEM images and FTIR spectra confirming the disappearance of C ^ C, C]O peaks along with C]O, C-O-C, C-H, and O-H bond destabilization following bioaccumulation. Moreover, in terms of phytotoxicity evaluation, it was observed that the treated soil, containing both heavy metals and the selected potent bacterial strain, exhibited reduced toxicity, resulting in improved germination and growth parameters for the seeds of Solanum lycopersicum (tomato plant). Overall, the selected bacterial strain demonstrated its potential for effectively removing multiple metals from the metal contaminated environment.
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Affiliation(s)
- Ankita Ghosh
- Department of Environmental Sciences, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, 263145, Uttarakhand, India
| | - Diksha Sah
- Department of Environmental Sciences, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, 263145, Uttarakhand, India
| | - Moumita Chakraborty
- Department of Environmental Sciences, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, 263145, Uttarakhand, India
| | - J.P.N. Rai
- Department of Environmental Sciences, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, 263145, Uttarakhand, India
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Bayuo J, Rwiza MJ, Mtei KM. Adsorption and desorption ability of divalent mercury from an interactive bicomponent sorption system using hybrid granular activated carbon. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:935. [PMID: 37436470 DOI: 10.1007/s10661-023-11540-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 06/19/2023] [Indexed: 07/13/2023]
Abstract
The sequestration of heavy metals from multicomponent sorption media has become critical due to the noxious effects of heavy metals on the natural environment and subsequently on human health as well as all life forms. The abatement of heavy metals using bio-adsorbents is one of the efficient and affordable approaches for treating water and wastewater. Therefore, the interactive effect of arsenic [As(III)] ions on the sorption and desorption ability of mercury [Hg(II)] from a binary sorption system was conducted. More so, the impact of reaction time, solution pH, bio-adsorbent particle size, bio-adsorbent dose, initial mono-metal, and binary-metal concentration as well as reaction temperature on the individual and competitive sorption of Hg(II) was explored. The study showed that Hg(II) could be removed effectively from the single-component system and competitively from the aqueous phases by the bio-adsorbent in the coexistence of As(III) species in the bicomponent medium. The adsorptive detoxification of Hg(II) from the monocomponent and bicomponent sorption media showed dependence on all the studied adsorption parameters. The occurrence of As(III) species in the bicomponent sorption medium affected the decontamination of Hg(II) by the bio-adsorbent and the major interactive mechanism was found to be antagonism. The spent bio-adsorbent was effectively recycled using 0.10 M nitric (HNO3) and hydrochloric (HCl) acids solutions and the multi-regeneration cycles showed a high removal efficiency in each cycle. The first regeneration cycle was found to have the highest Hg(II) ions removal efficiencies of 92.31 and 86.88% for the monocomponent and bicomponent systems, respectively. Thus, the bio-adsorbent was found to be mechanically stable and reusable up to the 6.00 regeneration cycle. Therefore, this study concludes that the bio-adsorbent not only has a higher adsorption capacity but also a good recycling performance pointing to good industrial applications and economic prospects.
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Affiliation(s)
- Jonas Bayuo
- School of Materials, Energy, Water, and Environmental Sciences (MEWES), The Nelson Mandela African Institution of Science and Technology (NM-AIST), P.O. Box 447, Arusha, Tanzania.
- School of Science, Mathematics and Technology Education (SoSMTE), Department of Science Education, C. K. Tedam University of Technology and Applied Sciences (CKT-UTAS), Postal Box 24, Navrongo, Upper East Region, Ghana.
| | - Mwemezi J Rwiza
- School of Materials, Energy, Water, and Environmental Sciences (MEWES), The Nelson Mandela African Institution of Science and Technology (NM-AIST), P.O. Box 447, Arusha, Tanzania
| | - Kelvin Mark Mtei
- School of Materials, Energy, Water, and Environmental Sciences (MEWES), The Nelson Mandela African Institution of Science and Technology (NM-AIST), P.O. Box 447, Arusha, Tanzania
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Biswas R, Paul D, Maity S, Sarkar A. Microbial community composition analysis to decipher the possible role of inherent bacteria for in-situ arsenic (As) bioremediation. 3 Biotech 2023; 13:214. [PMID: 37251727 PMCID: PMC10219919 DOI: 10.1007/s13205-023-03612-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 05/06/2023] [Indexed: 05/31/2023] Open
Abstract
Biogeochemical reduction and mobilization of sediment-bound arsenic (As) is the major concern for widespread groundwater As contamination in the middle Gangetic plains. The present work examines a microcosm based bio-stimulation study and substrate amendments over 45 days to analyze the bacterial community structure and distribution to indicate the possible in-situ bioremediation strategy in the area. Initially, Bacterial phyla Proteobacteria was predominantly present in all the samples, followed by Actinobacteria, Bacteroidetes, and Firmicutes whereas Cyanobacteria was noted as the minor group. In genus level, Delftia, Acinetobacter, Lysobacter, Bacillus, and Pseudomonas were the major groups of bacteria in the As-rich aquifer system, while Planctomycetes dominated the bio-stimulated samples, followed by a minute portion of Proteobacteria. Alpha diversity and Chaol curve further determined the species richness in the samples with an As tolerant capacity of 152.28 ppb. The presence of γ-Proteobacteria as the dominating member in high As-content water indicated their predominant role in As mobilization, whereas, dominance of α-Proteobacterial members in low As-content water indicated their involvement in As detoxification. The complete change in microbial community structure within the bio-stimulated conditions indicated the extensive role of arsenite-oxidizing microbial communities within different levels of As-contaminated areas in Bihar that will enlighten the significant role of these communities in As-biogeochemical cycle. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03612-0.
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Affiliation(s)
- Rimi Biswas
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha 769008 India
| | - Dhiraj Paul
- National Centre for Microbial Resources, Pune, India
| | - Sourav Maity
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha 769008 India
| | - Angana Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha 769008 India
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Bacterial Biosorbents, an Efficient Heavy Metals Green Clean-Up Strategy: Prospects, Challenges, and Opportunities. Microorganisms 2022; 10:microorganisms10030610. [PMID: 35336185 PMCID: PMC8953973 DOI: 10.3390/microorganisms10030610] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/09/2022] [Accepted: 03/10/2022] [Indexed: 12/17/2022] Open
Abstract
Rapid industrialization has led to the pollution of soil and water by various types of contaminants. Heavy metals (HMs) are considered the most reactive toxic contaminants, even at low concentrations, which cause health problems through accumulation in the food chain and water. Remediation using conventional methods, including physical and chemical techniques, is a costly treatment process and generates toxic by-products, which may negatively affect the surrounding environment. Therefore, biosorption has attracted significant research interest in the recent decades. In contrast to existing methods, bacterial biomass offers a potential alternative for recovering toxic/persistent HMs from the environment through different mechanisms for metal ion uptake. This review provides an outlook of the advantages and disadvantages of the current bioremediation technologies and describes bacterial groups, especially extremophiles with biosorbent potential for heavy metal removal with relevant examples and perspectives.
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Glodowska M, Welte CU, Kurth JM. Metabolic potential of anaerobic methane oxidizing archaea for a broad spectrum of electron acceptors. Adv Microb Physiol 2022; 80:157-201. [PMID: 35489791 DOI: 10.1016/bs.ampbs.2022.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Methane (CH4) is a potent greenhouse gas significantly contributing to the climate warming we are currently facing. Microorganisms play an important role in the global CH4 cycle that is controlled by the balance between anaerobic production via methanogenesis and CH4 removal via methanotrophic oxidation. Research in recent decades advanced our understanding of CH4 oxidation, which until 1976 was believed to be a strictly aerobic process. Anaerobic oxidation of methane (AOM) coupled to sulfate reduction is now known to be an important sink of CH4 in marine ecosystems. Furthermore, in 2006 it was discovered that anaerobic CH4 oxidation can also be coupled to nitrate reduction (N-DAMO), demonstrating that AOM may be much more versatile than previously thought and linked to other electron acceptors. In consequence, an increasing number of studies in recent years showed or suggested that alternative electron acceptors can be used in the AOM process including FeIII, MnIV, AsV, CrVI, SeVI, SbV, VV, and BrV. In addition, humic substances as well as biochar and perchlorate (ClO4-) were suggested to mediate AOM. Anaerobic methanotrophic archaea, the so-called ANME archaea, are key players in the AOM process, yet we are still lacking deeper understanding of their metabolism, electron acceptor preferences and their interaction with other microbial community members. It is still not clear whether ANME archaea can oxidize CH4 and reduce metallic electron acceptors independently or via electron transfer to syntrophic partners, interspecies electron transfer, nanowires or conductive pili. Therefore, the aim of this review is to summarize and discuss the current state of knowledge about ANME archaea, focusing on their physiology, metabolic flexibility and potential to use various electron acceptors.
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Affiliation(s)
- Martyna Glodowska
- Department of Microbiology, Radboud Institute for Biological and Environmental Sciences, Radboud University, Nijmegen, The Netherlands.
| | - Cornelia U Welte
- Department of Microbiology, Radboud Institute for Biological and Environmental Sciences, Radboud University, Nijmegen, The Netherlands.
| | - Julia M Kurth
- Department of Microbiology, Radboud Institute for Biological and Environmental Sciences, Radboud University, Nijmegen, The Netherlands
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Bertin PN, Crognale S, Plewniak F, Battaglia-Brunet F, Rossetti S, Mench M. Water and soil contaminated by arsenic: the use of microorganisms and plants in bioremediation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:9462-9489. [PMID: 34859349 PMCID: PMC8783877 DOI: 10.1007/s11356-021-17817-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 11/23/2021] [Indexed: 04/16/2023]
Abstract
Owing to their roles in the arsenic (As) biogeochemical cycle, microorganisms and plants offer significant potential for developing innovative biotechnological applications able to remediate As pollutions. This possible use in bioremediation processes and phytomanagement is based on their ability to catalyse various biotransformation reactions leading to, e.g. the precipitation, dissolution, and sequestration of As, stabilisation in the root zone and shoot As removal. On the one hand, genomic studies of microorganisms and their communities are useful in understanding their metabolic activities and their interaction with As. On the other hand, our knowledge of molecular mechanisms and fate of As in plants has been improved by laboratory and field experiments. Such studies pave new avenues for developing environmentally friendly bioprocessing options targeting As, which worldwide represents a major risk to many ecosystems and human health.
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Affiliation(s)
- Philippe N Bertin
- Génétique Moléculaire, Génomique et Microbiologie, UMR7156 CNRS - Université de Strasbourg, Strasbourg, France.
| | - Simona Crognale
- Water Research Institute, National Research Council of Italy (IRSA - CNR), Rome, Italy
| | - Frédéric Plewniak
- Génétique Moléculaire, Génomique et Microbiologie, UMR7156 CNRS - Université de Strasbourg, Strasbourg, France
| | | | - Simona Rossetti
- Water Research Institute, National Research Council of Italy (IRSA - CNR), Rome, Italy
| | - Michel Mench
- Univ. Bordeaux, INRAE, BIOGECO, F-33615, Pessac, France
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Biswas R, Sarkar A. A two-step approach for arsenic removal by exploiting an autochthonous Delftia sp. BAs29 and neutralized red mud. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:40665-40677. [PMID: 32939655 DOI: 10.1007/s11356-020-10665-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 08/27/2020] [Indexed: 06/11/2023]
Abstract
Groundwater arsenic contamination represents a global threat to human health. Among the proposed bioremediation applications, microbial transformation of arsenite (As (III)) seems to be the most favorable approach as it can be easily coupled with several adsorption techniques, without producing lethal by-products or demanding chemical addition. This study highlights the potential contribution of a highly efficient As (III) transforming bacteria Delftia sp. BAs29 followed by the adsorption of transformed arsenate (As (V)) using neutralized red mud under suitable treatment conditions. Diverse experimental conditions elucidated (inflow As (III) concentrations, flow rate) the rate and oxidation efficiency to mediate the process. Red mud is a waste by-product from the Bayer's process of the alumina industry, which when neutralized aids the removal of As (V). The neutralized red mud was characterized using X-ray diffraction (XRD) microanalysis, Scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDX) and Fourier-transform infrared spectroscopy (FTIR). Arsenate adsorption using neutralized red mud was also studied as a function of pH and time, adsorbent dosage, and initial As (V) concentration. The adsorption process was significantly affected by the solution pH, which on decreasing gradually increased the adsorption efficiency. The maximum monolayer capacity for adsorption of 274.1 mg/g As (V) was found at optimum conditions of pH 4.0 and a contact time of 30 min at a temperature of 30 °C, respectively. Furthermore, this process significantly contributed in fabricating a two-step bio-filter column for the removal of total arsenic from groundwater. Graphical abstract.
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Affiliation(s)
- Rimi Biswas
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, 769008, India
| | - Angana Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, 769008, India.
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Irshad S, Xie Z, Mehmood S, Nawaz A, Ditta A, Mahmood Q. Insights into conventional and recent technologies for arsenic bioremediation: A systematic review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:18870-18892. [PMID: 33586109 DOI: 10.1007/s11356-021-12487-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Accepted: 01/11/2021] [Indexed: 05/22/2023]
Abstract
Arsenic (As) bioremediation has been an economical and sustainable approach, being practiced widely under several As-contaminated environments. Bioremediation of As involves the use of bacteria, fungi, yeast, plants, and genetically modified organisms for detoxification/removal of As from the contaminated site. The understanding of multi-factorial biological components involved in these approaches is complex and more and more efforts are on their way to make As bioremediation economical and efficient. In this regard, we systematically reviewed the recent literature (n=200) from the last two decades regarding As bioremediation potential of conventional and recent technologies including genetically modified plants for phytoremediation and integrated approaches. Also, the responsible mechanisms behind different approaches have been identified. From the literature, it was found that As bioremediation through biosorption, bioaccumulation, phytoextraction, and volatilization involving As-resistant microbes has proved a very successful technology. However, there are various pathways of As tolerance of which the mechanisms have not been fully understood. Recently, phytosuction separation technology has been introduced and needs further exploration. Also, integrated approaches like phytobial, constructed wetlands using As-resistant bacteria with plant growth-promoting activities have not been extensively studied. It is speculated that the integrated bioremediation approaches with practical applicability and reliability would prove most promising for As remediation. Further technological advancements would help explore the identified research gaps in different approaches and lead us toward sustainability and perfection in As bioremediation.
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Affiliation(s)
- Sana Irshad
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, People's Republic of China
| | - Zuoming Xie
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, People's Republic of China
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, People's Republic of China
| | - Sajid Mehmood
- Guangdong Provincial Key Laboratory for Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Asad Nawaz
- Jiangsu Key Laboratory of Crop Genetics and Physiology, Key Laboratory of Plant Functional Genomics of the Ministry of Education, College of Agriculture, Yangzhou University, Yangzhou, 225009, Jiangsu, People's Republic of China
| | - Allah Ditta
- Department of Environmental Sciences, Shaheed Benazir Bhutto University Sheringal, Upper Dir, Khyber Pakhtunkhwa, 18000, Pakistan.
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Perth, WA, 6009, Australia.
| | - Qaisar Mahmood
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan.
- School of Biotechnology and Food Engineering, Huanghuai University, Zhumadian, 463000, China.
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Maity S, Biswas R, Sarkar A. Comparative valuation of groundwater quality parameters in Bhojpur, Bihar for arsenic risk assessment. CHEMOSPHERE 2020; 259:127398. [PMID: 32593818 DOI: 10.1016/j.chemosphere.2020.127398] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 06/08/2020] [Accepted: 06/10/2020] [Indexed: 06/11/2023]
Abstract
Arsenic endosmosis causes a severe threat to human health within the developing countries. This study assessed the levels of geogenic arsenic and other heavy metals affecting the release of As in the aquifers within the drinking water sources in Bhojpur district of Bihar, India. Eighteen water samples were collected in triplicates from hand-dug wells in six neighboring villages in proximity to the River Ganga namely Bakhorapur, Gaziapur, Parasrampur (or Kanhachhapara), Saraiya, Paiga and Gundiinin. The physicochemical parameters, ionic content and heavy metal analysis of the collected water samples indicated the region to be highly contaminated with arsenic, zinc, manganese and iron. The arsenic and iron concentration ranged between 24.3 and 168.07 μg/L and 0.17-1.16 mg/L respectively, indicating the excessive withdrawal of groundwater for domestic and irrigation purposes with a significant correlation between both the metals. Elevated concentration of zinc in the region attributed to the excessive application of chemical fertilizers and pesticides. Concentration of manganese was also in the higher range of 0.05-1.15 mg/L, primarily due to the urbanized industrial activities. Human health risk assessment within two population groups in the region indicated that the overall water quality is slightly contaminated but the risk associated with it is low. Water Quality Index ranged from 29 to 48, signifying the water quality to be poor. Residual sodium carbonate values indicated that few water sample sources are not suitable for irrigation purposes whereas, sodium adsorption ratio (SAR) values were within the acceptable limits to be used for irrigation.
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Affiliation(s)
- Sourav Maity
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, 769008, India.
| | - Rimi Biswas
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, 769008, India.
| | - Angana Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, 769008, India.
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Mazumder P, Sharma SK, Taki K, Kalamdhad AS, Kumar M. Microbes involved in arsenic mobilization and respiration: a review on isolation, identification, isolates and implications. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2020; 42:3443-3469. [PMID: 32170513 DOI: 10.1007/s10653-020-00549-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 02/29/2020] [Indexed: 06/10/2023]
Abstract
Microorganisms play an important role in arsenic (As) cycling in the environment. Microbes mobilize As directly or indirectly, and natural/geochemical processes such as sulphate and iron reduction, oxidative sulphide mineral dissolution, arsenite (AsO33-) oxidation and arsenate (AsO43-) respiration further aid in As cycle in the environment. Arsenate serves as an electron donor for the microbes during anaerobic conditions in the sediment. The present work reviews the recent development in As contamination, various As-metabolizing microbes and their phylogenetic diversity, to understand the role of microbial communities in As respiration and mobilization. It also summarizes the contemporary understanding of the intricate biochemistry and molecular biology of natural As metabolisms. Some successful examples of engineered microbes by harnessing these natural mechanisms for effective remediation are also discussed. The study indicates that there is an exigent need to have a clear understanding of environmental aspects of As mobilization and subsequent oxidation-reduction by a suitable microbial consortium.
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Affiliation(s)
- Payal Mazumder
- Centre for the Environment, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Subhash Kumar Sharma
- Environmental Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India
| | - Kaling Taki
- Discipline of Civil Engineering, Indian Institute of Technology Gandhinagar, Gandhinagar, Gujarat, 382355, India
| | - Ajay S Kalamdhad
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Manish Kumar
- Discipline of Earth Sciences, Indian Institute of Technology Gandhinagar, Gandhinagar, Gujarat, 382355, India.
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Wang J, Xie Z, Wei X, Chen M, Luo Y, Wang Y. An indigenous bacterium Bacillus XZM for phosphate enhanced transformation and migration of arsenate. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 719:137183. [PMID: 32120093 DOI: 10.1016/j.scitotenv.2020.137183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/05/2020] [Accepted: 02/06/2020] [Indexed: 06/10/2023]
Abstract
A number of arsenate-reducing bacteria respire adsorbed As(V), producing As(III) and thus contributing to arsenic mobilization from the solid phase to the aqueous phase. Two arsenate reducing genes, arsC and arrA, were both amplified in an indigenous bacterium Bacillus XZM isolated from high arsenic aquifer sediments. The effect of phosphate input on this novel bacterium in terms of mediating the biogeochemical behavior of arsenic was investigated for the first time. The results show bacterial growth and arsenate reduction appear to increase with the addition of phosphate. Input of 1 mM phosphate reduced the negative effects of As(V) on bacterial growth, resulting in 55-60% greater biomass production compared to lower phosphate inputs (0.01 and 0.1 mM). The data of real-time quantitative PCR (qPCR) indicated arsenate was involved in the expressions of two arsenate reductase genes (arsC and arrA genes) in indigenous bacterium Bacillus XZM. Overall, the addition of phosphate (from 0.1 to 1 mM) resulted in a doubling of arsenate bio-desorption from the sediment into the aqueous medium. Oxidation-reduction potential, as an environmental indicator of the bacterial reduction of metals, declined to -200 mV in the presence of strain XZM and 1 mM phosphate in the microcosm. Phosphate input enhanced arsenic biomigration, indicating the effect of phosphate concentration should be considered when studying the biogeochemical behavior of arsenic.
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Affiliation(s)
- Jia Wang
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, PR China
| | - Zuoming Xie
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, PR China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, PR China.
| | - Xiaofan Wei
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, PR China
| | - Mengna Chen
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, PR China
| | - Yan Luo
- Environmental Monitoring Station, Jianli Environmental Protection Bureau, Hubei, Jianli 433300, PR China
| | - Yanxin Wang
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, PR China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, PR China
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Phenotypic and genomic analysis of multiple heavy metal–resistant Micrococcus luteus strain AS2 isolated from industrial waste water and its potential use in arsenic bioremediation. Appl Microbiol Biotechnol 2020; 104:2243-2254. [DOI: 10.1007/s00253-020-10351-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 12/23/2019] [Accepted: 01/05/2020] [Indexed: 12/23/2022]
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Bajpai S, Alam N, Biswas P. Present and Potential Water-Quality Challenges in India. SEP SCI TECHNOL 2019. [DOI: 10.1016/b978-0-12-815730-5.00004-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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