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Lee HC, Chen SC, Sheu YT, Yao CL, Lo KH, Kao CM. Bioremediation of trichloroethylene-contaminated groundwater using green carbon-releasing substrate with pH control capability. Environ Pollut 2024; 348:123768. [PMID: 38493868 DOI: 10.1016/j.envpol.2024.123768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/01/2024] [Accepted: 03/09/2024] [Indexed: 03/19/2024]
Abstract
In this research, a sustainable substrate, termed green and long-lasting substrate (GLS), featuring a blend of emulsified substrate (ES) and modified rice husk ash (m-RHA) was devised. The primary objective was to facilitate the bioremediation of groundwater contaminated with trichloroethylene (TCE) using innovative GLS for slow carbon release and pH control. The GLS was concocted by homogenizing a mixture of soybean oil, surfactants (Simple Green™ and soya lecithin), and m-RHA, ensuring a gradual release of carbon sources. The hydrothermal synthesis was applied for the production of m-RHA production. The analyses demonstrate that m-RHA were uniform sphere-shape granules with diameters in micro-scale ranges. Results from the microcosm study show that approximately 83% of TCE could be removed (initial TCE concentration = 7.6 mg/L) with GLS supplement after 60 days of operation. Compared to other substrates without RHA addition, higher TCE removal efficiency was obtained, and higher Dehalococcoides sp. (DHC) population and hydA gene (hydrogen-producing gene) copy number were also detected in microcosms with GLS addition. Higher hydrogen concentrations enhanced the DHC growth, which corresponded to the increased DHC populations. The addition of the GLS could provide alkalinity at the initial stage to neutralize the acidified groundwater caused by the produced organic acids after substrate biodegradation, which was advantageous to DHC growth and TCE dechlorination. The addition of m-RHA reached an increased TCE removal efficiency, which was due to the fact that the m-RHA had the zeolite-like structure with a higher surface area and lower granular diameter, and thus, it resulted in a more effective initial adsorption effect. Therefore, a significant amount of TCE could be adsorbed onto the surface of m-RHA, which caused a rapid TCE removal through adsorption. The carbon substrates released from m-RHA could then enhance the subsequent dechlorination. The developed GLS is an environmentally-friendly and green substrate.
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Affiliation(s)
- Hsin-Chia Lee
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Ssu-Ching Chen
- Department of Life Sciences, National Central University, Chung-Li City, Taoyuan, Taiwan
| | - Yih-Terng Sheu
- General Education Center, National University of Kaohsiung, Kaohsiung, Taiwan
| | - Chao-Ling Yao
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Kai-Hung Lo
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Chih-Ming Kao
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan.
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Kumar V, Ameen F, Verma P. Unraveling the shift in bacterial communities profile grown in sediments co-contaminated with chlorolignin waste of pulp-paper mill by metagenomics approach. Front Microbiol 2024; 15:1350164. [PMID: 38529176 PMCID: PMC10961449 DOI: 10.3389/fmicb.2024.1350164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 02/21/2024] [Indexed: 03/27/2024] Open
Abstract
Pulp-paper mills (PPMs) are known for consistently generating a wide variety of pollutants, that are often unidentified and highly resistant to environmental degradation. The current study aims to investigate the changes in the indigenous bacterial communities profile grown in the sediment co-contaminated with organic and inorganic pollutants discharged from the PPMs. The two sediment samples, designated PPS-1 and PPS-2, were collected from two different sites. Physico-chemical characterization of PPS-1 and PPS-2 revealed the presence of heavy metals (mg kg-1) like Cu (0.009-0.01), Ni (0.005-0.002), Mn (0.078-0.056), Cr (0.015-0.009), Pb (0.008-0.006), Zn (0.225-0.086), Fe (2.124-0.764), Al (3.477-22.277), and Ti (99.792-45.012) along with high content of chlorophenol, and lignin. The comparative analysis of organic pollutants in sediment samples using gas chromatography-mass spectrometry (GC-MS) revealed the presence of major highly refractory compounds, such as stigmasterol, β-sitosterol, hexadecanoic acid, octadecanoic acid; 2,4-di-tert-butylphenol; heptacosane; dimethyl phthalate; hexachlorobenzene; 1-decanol,2-hexyl; furane 2,5-dimethyl, etc in sediment samples which are reported as a potential toxic compounds. Simultaneously, high-throughput sequencing targeting the V3-V4 hypervariable region of the 16S rRNA genes, resulted in the identification of 1,249 and 1,345 operational taxonomic units (OTUs) derived from a total of 115,665 and 119,386 sequences read, in PPS-1 and PPS-2, respectively. Analysis of rarefaction curves indicated a diversity in OTU abundance between PPS-1 (1,249 OTUs) and PPS-2 (1,345 OTUs). Furthermore, taxonomic assignment of metagenomics sequence data showed that Proteobacteria (55.40%; 56.30%), Bacteoidetes (11.30%; 12.20%), and Planctomycetes (5.40%; 4.70%) were the most abundant phyla; Alphproteobacteria (20.50%; 23.50%), Betaproteobacteria (16.00%; 12.30%), and Gammaproteobacteria were the most recorded classes in PPS-1 and PPS-2, respectively. At the genus level, Thiobacillus (7.60%; 4.50%) was the most abundant genera grown in sediment samples. The results indicate significant differences in both the diversity and relative abundance of taxa in the bacterial communities associated with PPS-2 when compared to PPS-1. This study unveils key insights into contaminant characteristics and shifts in bacterial communities within contaminated environments. It highlights the potential for developing efficient bioremediation techniques to restore ecological balance in pulp-paper mill waste-polluted areas, stressing the importance of identifying a significant percentage of unclassified genera and species to explore novel genes.
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Affiliation(s)
- Vineet Kumar
- Bioprocess and Bioenergy Laboratory, Department of Microbiology, School of Life Sciences, Central University of Rajasthan, Ajmer, Rajasthan, India
| | - Fuad Ameen
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Pradeep Verma
- Bioprocess and Bioenergy Laboratory, Department of Microbiology, School of Life Sciences, Central University of Rajasthan, Ajmer, Rajasthan, India
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Czajkowska A, Korsak D, Fiedoruk-Pogrebniak M, Koncki R, Strzelak K. Turbidimetric flow analysis system for the investigation of microbial growth. Talanta 2024; 268:125303. [PMID: 37852015 DOI: 10.1016/j.talanta.2023.125303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 10/03/2023] [Accepted: 10/07/2023] [Indexed: 10/20/2023]
Abstract
The monitoring of life of microbial populations is of the uttermost importance in environmental and food analysis, agriculture, as well as in medicine. The duration of bacteria adaptation to new environmental conditions, its lifetime and the divisions' pace are the key information in many studies. It was found that the fully-mechanized flow analysis system based on solenoid valves and pumps, paired with a dedicated flow-through optoelectronic detector can be successfully applied for monitoring of bacteria growth. The applicability of the designed multicommutated flow analysis (MCFA) system was proved by analysis of solutions containing bacteria cells proceeded by tests of McFarland (McF) standards. The developed setup allowed modelling and simulation of microbial growth, as well as monitoring of the bacteria growth in real-time manner to be carried out. The monitor is useful for the quantitative estimation of the basic parameters of bacteria population like its size, the rate of bacteria multiplication, as well as the times of lag, log and stationary phases of microbial growth.
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Affiliation(s)
| | - Dorota Korsak
- Faculty of Biology, University of Warsaw, Warsaw, Poland
| | | | - Robert Koncki
- Faculty of Chemistry, University of Warsaw, Warsaw, Poland
| | - Kamil Strzelak
- Faculty of Chemistry, University of Warsaw, Warsaw, Poland.
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Yadav S, Prasad M, Singh N. Biosensor: An Emerging Technological Tool for Microorganisms and Its Disease Diagnosis. Indian J Microbiol 2023; 63:395-397. [PMID: 38031605 PMCID: PMC10682339 DOI: 10.1007/s12088-023-01142-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023] Open
Affiliation(s)
- Santosh Yadav
- CSIR-Institute of Genomics and Integrative Biology, Mall Road, New Delhi, Delhi 110007 India
| | - Minakshi Prasad
- ICAR-National Research Centre on Equines, Sirsa Road, Hisar, 125001 India
| | - Namita Singh
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana 125001 India
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Yoon S, Kondakala S, Kim M, Foley SL, Kweon O, Kim S. Detection, Genophenotypic Characterization, and Antimicrobial Resistance of Microbial Contaminants. Microorganisms 2023; 11:1350. [PMID: 37317324 DOI: 10.3390/microorganisms11051350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 05/17/2023] [Indexed: 06/16/2023] Open
Abstract
Microbial contamination is the inadvertent presence of microbes or their byproducts in materials or environments [...].
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Affiliation(s)
- Sunghyun Yoon
- Division of Microbiology, National Center for Toxicological Research, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Sandeep Kondakala
- Division of Microbiology, National Center for Toxicological Research, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Minjae Kim
- Natural Resource Ecology Laboratory, Colorado State University, 711 Oval Drive, Fort Collins, CO 80523, USA
| | - Steven L Foley
- Division of Microbiology, National Center for Toxicological Research, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Ohgew Kweon
- Division of Microbiology, National Center for Toxicological Research, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Seongjae Kim
- Division of Microbiology, National Center for Toxicological Research, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA
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Wacogne B, Belinger Podevin M, Vaccari N, Koubevi C, Codjiová C, Gutierrez E, Bourgeois P, Davoine L, Robert-Nicoud M, Rouleau A, Frelet-Barrand A. Absorption/Attenuation Spectral Description of ESKAPEE Bacteria: Application to Seeder-Free Culture Monitoring, Mammalian T-Cell and Bacteria Mixture Analysis and Contamination Description. Sensors (Basel) 2023; 23:s23094325. [PMID: 37177529 PMCID: PMC10181643 DOI: 10.3390/s23094325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023]
Abstract
Despite numerous innovations, measuring bacteria concentrations on a routine basis is still time consuming and ensuring accurate measurements requires careful handling. Furthermore, it often requires sampling small volumes of bacteria suspensions which might be poorly representative of the real bacteria concentration. In this paper, we propose a spectroscopy measurement method based on a description of the absorption/attenuation spectra of ESKAPEE bacteria. Concentrations were measured with accuracies less than 2%. In addition, mixing the mathematical description of the absorption/attenuation spectra of mammalian T-cells and bacteria allows for the simultaneous measurements of both species' concentrations. This method allows real-time, sampling-free and seeder-free measurement and can be easily integrated into a closed-system environment.
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Affiliation(s)
- Bruno Wacogne
- Institut FEMTO-ST, Université de Franche-Comté, CNRS, F-25000 Besançon, France
- Centre d'Investigation Clinique, Centre Hospitalier Universitaire de Besançon, INSERM CIC 1431, 25030 Besançon, France
| | | | - Naïs Vaccari
- Institut FEMTO-ST, Université de Franche-Comté, CNRS, F-25000 Besançon, France
| | - Claudia Koubevi
- Institut FEMTO-ST, Université de Franche-Comté, CNRS, F-25000 Besançon, France
| | - Céline Codjiová
- Institut FEMTO-ST, Université de Franche-Comté, CNRS, F-25000 Besançon, France
| | - Emilie Gutierrez
- Institut FEMTO-ST, Université de Franche-Comté, CNRS, F-25000 Besançon, France
| | - Pauline Bourgeois
- Institut FEMTO-ST, Université de Franche-Comté, CNRS, F-25000 Besançon, France
| | - Lucie Davoine
- Institut FEMTO-ST, Université de Franche-Comté, CNRS, F-25000 Besançon, France
| | | | - Alain Rouleau
- Institut FEMTO-ST, Université de Franche-Comté, CNRS, F-25000 Besançon, France
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