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Yoon Y, Seo YS, Cho M. Assessment of elimination efficacy on foodborne pathogenic microbes and foulant precipitates using phytic acid and sulfamic acid. CHEMOSPHERE 2024; 362:142706. [PMID: 38936490 DOI: 10.1016/j.chemosphere.2024.142706] [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: 04/08/2024] [Revised: 06/23/2024] [Accepted: 06/24/2024] [Indexed: 06/29/2024]
Abstract
This research investigated the comparative efficacy of sulfamic acid (SA) and phytic acid (PA), both individually and in combination, for treating potential foodborne pathogens and pre-formed foulants. Pathogens studied included Listeria monocytogenes, E. coli DH5α, Salmonella typhimurium, Staphylococcus aureus, and vegetative Bacillus cereus, in suspended aqueous solutions, as well as Pseudomonas aeruginosa biofilm on quartz glass surfaces. Inactivation kinetics for Listeria monocytogenes revealed concentration-dependent rate constants (k) of 6.6(±0.2) × 10-6 M and 2.8(±0.1) × 10-8 M for single treatments of SA and PA, respectively, and ranged from 6.9(±0.3) to 50.7(±2.3) × 10-6 M for combined treatments with PA pre-treatment concentrations of 75-758 μM. Observable cellular abnormalities in Listeria monocytogenes, such as membrane vesiculation, chelation, cellular disruption, biomolecule leakage, and lipid peroxidation, were identified after exposure to PA or SA, either individually or in combination. The optimized combined treatment of PA and SA achieved significant removal (i.e., >3-log; 99.9%) of potential foodborne pathogens under simulated food-washing process conditions. Additionally, over 90% descaling efficacy was observed for pre-formed foulants such as CaCO3 precipitates and Pseudomonas aeruginosa biofilm on quartz glass surfaces with the combined treatment. These findings provide novel insights into the versatile utility of PA and SA for optimizing combinational water disinfection systems and addressing (in)organic foulant scaling on surfaces in the food processing industry.
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Affiliation(s)
- Younggun Yoon
- GwangJu Institute, 55, Jingoksandanjungang-ro, Gwangsan-gu, Gwangju, 62465, Republic of Korea; Division of Biotechnology, SELS Center, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, Jeonbuk, 54596, Republic of Korea.
| | - Young-Seok Seo
- R&D Center, Sanigen Co, Ltd., Iksan, 54576, Republic of Korea
| | - Min Cho
- Division of Biotechnology, SELS Center, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, Jeonbuk, 54596, Republic of Korea.
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Sorption and transport characteristics of europium on sandy soils. Appl Radiat Isot 2023; 194:110690. [PMID: 36764222 DOI: 10.1016/j.apradiso.2023.110690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 07/07/2022] [Accepted: 01/21/2023] [Indexed: 01/28/2023]
Abstract
Radioactive europium can be released as a fission product during nuclear incidents and pose a threat to the human and surrounding environment because of its biological activity and long decay half-lives. For safe design issues and human health protection demands in construction of the planned nuclear power plants (NPPs) at Al-Dabaa site, it is necessary to study the sorption and transport of different radionuclides as europium within the selected area for predicting their fate at any crisis. Many soil samples were collected from different locations at the area selected along the northwestern coast of Egypt. The samples were transported to the laboratory, preserved, and characterized using X-Ray fluorescence (XRF), Fourier transform infrared spectroscopy (FT-IR), and X-Ray diffraction (XRD). Experiments were performed to study the sorption and transport kinetics of Eu(III) ions on two sandy soil samples from the collected ones. The effect of different parameters (e.g. contact time, pH, initial europium concentration, and temperature) on the sorption behavior europium was explored in a static condition. The maximum sorption capacity was determined and found to be 3.4 and 7.0 mg g-1 for sorption of Eu(III) ions onto soil-1 and soil-2, respectively. Different models were applied to assess the sorption of europium onto the surface of the investigated soils. Data confirmed that Eu retention was attained through a chemisorption process. Further, the thermodynamic parameters were determined and their values confirmed the endothermic nature of the sorption process. The transport of europium radionuclides, with groundwater, through homogeneous porous media with uniform one-dimensional flow in the geosphere was processed and the relative migration velocity was determined in presence of both distilled and seawater media. The transport of Eu(III) radionuclides was higher in presence of seawater than that in presence of distilled water by about two order of magnitude. This obviously clarified the effect of seawater in accelerating the transport of radionuclides with groundwater in the geosphere of studied area. The role of different competing ions have various valances on the relative migration velocity was explored. Further, the time required for studied radionuclides to reach Mediterranean Sea was determined.
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Landskron J, Dötzer F, Benkert A, Mayle M, Drese KS. Acoustic Limescale Layer and Temperature Measurement in Ultrasonic Flow Meters. SENSORS (BASEL, SWITZERLAND) 2022; 22:6648. [PMID: 36081105 PMCID: PMC9460453 DOI: 10.3390/s22176648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/26/2022] [Accepted: 08/31/2022] [Indexed: 06/15/2023]
Abstract
Guided acoustic waves are commonly used in domestic water meters to measure the flow rate. The accuracy of this measurement method is affected by factors such as variations in temperature and limescale deposition inside of the pipe. In this work, a new approach using signals from different sound propagation paths is used to determine these quantities and allow for subsequent compensation. This method evaluates the different propagation times of guided Lamb waves in flow measurement applications. A finite element method-based model is used to identify the calibration curves for the device under test. The simulated dependencies on temperature and layer thickness are validated by experimental data. Finally, a test on simulated data with varying temperatures and limescale depositions proves that this method can be used to separate both effects. Based on these values, a flow measurement correction scheme can be derived that provides an improved resolution of guided acoustic wave-based flow meters.
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Affiliation(s)
- Johannes Landskron
- ISAT—Institute of Sensor and Actuator Technology, Coburg University of Applied Sciences and Arts, 96450 Coburg, Germany
| | - Florian Dötzer
- ISAT—Institute of Sensor and Actuator Technology, Coburg University of Applied Sciences and Arts, 96450 Coburg, Germany
| | | | | | - Klaus Stefan Drese
- ISAT—Institute of Sensor and Actuator Technology, Coburg University of Applied Sciences and Arts, 96450 Coburg, Germany
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El housse M, Hadfi A, Karmal I, Tadoumant S, Ben-aazza S, Errami M, Belattar M, Mohareb S, Tounsi A, Driouiche A. Study of scaling problem in the region of tata (Morocco): Analysis of the elemental composition, crystalline phases, and morphologies of scale deposition in water installations. Appl Radiat Isot 2022; 188:110388. [DOI: 10.1016/j.apradiso.2022.110388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 01/07/2022] [Accepted: 07/14/2022] [Indexed: 11/27/2022]
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Padilla González P, Bautista-Capetillo C, Ruiz-Canales A, González-Trinidad J, Júnez-Ferreira HE, Contreras Rodríguez AR, Robles Rovelo CO. Characterization of Scale Deposits in a Drinking Water Network in a Semi-Arid Region. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19063257. [PMID: 35328945 PMCID: PMC8948707 DOI: 10.3390/ijerph19063257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/05/2022] [Accepted: 03/08/2022] [Indexed: 02/05/2023]
Abstract
The quantity and quality of the supply of fresh water to households, commercial areas, small industries, green spaces irrigation and public and private institutions in large cities face challenges from the supply sources availability and suitable distribution network performance to the full satisfaction of the established drinking water guidelines. In Mexico, the main source of water comes from groundwater. Most of the Mexican aquifers are located in arid and semi-arid weather conditions. The groundwater’s physical–chemical properties are closely related to geology. This study was carried out at the north-central part of the country in which igneous and sedimentary rocks predominate, with high calcium carbonate (CaCO3) concentrations. The accumulation of CaCO3 in the pipelines is also known as scale deposit that decreases the fluid flow, causing a deficiency in the water supply. The main objectives of this study were determining the physical–chemical groundwater parameters and saturation indexes injected into the drinking water networks and characterizing the scale deposits by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results indicate that the scale deposits are mainly calcium carbonate and silica oxide crystals, caused by the water aggressiveness according to the saturation indexes and the lack of control over the saturation pH.
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Affiliation(s)
- Pedro Padilla González
- Doctorado en Ciencias de la Ingeniería, Campus UAZ Siglo XXI, Universidad Autónoma de Zacatecas, Carretera Zacatecas-Guadalajara Km. 6, Ejido La Escondida, Zacatecas 98160, Mexico; (P.P.G.); (J.G.-T.); (H.E.J.-F.)
| | - Carlos Bautista-Capetillo
- Doctorado en Ciencias de la Ingeniería, Campus UAZ Siglo XXI, Universidad Autónoma de Zacatecas, Carretera Zacatecas-Guadalajara Km. 6, Ejido La Escondida, Zacatecas 98160, Mexico; (P.P.G.); (J.G.-T.); (H.E.J.-F.)
- Correspondence: (C.B.-C.); (A.R.C.R.); Tel.: +52-492-1064540 (C.B.-C.); +52-492-1465300 (A.R.C.R.)
| | - Antonio Ruiz-Canales
- Doctorado en Agricultura, Recursos y Tecnologías Agroambientales y Alimentarios, Miguel Hernández de Elche—Campus de Orihuela, 03202 Orihuela, Spain;
| | - Julián González-Trinidad
- Doctorado en Ciencias de la Ingeniería, Campus UAZ Siglo XXI, Universidad Autónoma de Zacatecas, Carretera Zacatecas-Guadalajara Km. 6, Ejido La Escondida, Zacatecas 98160, Mexico; (P.P.G.); (J.G.-T.); (H.E.J.-F.)
| | - Hugo Enrique Júnez-Ferreira
- Doctorado en Ciencias de la Ingeniería, Campus UAZ Siglo XXI, Universidad Autónoma de Zacatecas, Carretera Zacatecas-Guadalajara Km. 6, Ejido La Escondida, Zacatecas 98160, Mexico; (P.P.G.); (J.G.-T.); (H.E.J.-F.)
| | - Ada Rebeca Contreras Rodríguez
- Licenciatura en Ciencia y Tecnología del Agua LUMAT, Universidad Autónoma de Zacatecas, Carretera Zacatecas-Guadalajara Km. 6, Ejido La Escondida, Zacatecas 98160, Mexico;
- Correspondence: (C.B.-C.); (A.R.C.R.); Tel.: +52-492-1064540 (C.B.-C.); +52-492-1465300 (A.R.C.R.)
| | - Cruz Octavio Robles Rovelo
- Licenciatura en Ciencia y Tecnología del Agua LUMAT, Universidad Autónoma de Zacatecas, Carretera Zacatecas-Guadalajara Km. 6, Ejido La Escondida, Zacatecas 98160, Mexico;
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Liu X, Zarfel G, van der Weijden R, Loiskandl W, Bitschnau B, Dinkla IJT, Fuchs EC, Paulitsch-Fuchs AH. Density-dependent microbial calcium carbonate precipitation by drinking water bacteria via amino acid metabolism and biosorption. WATER RESEARCH 2021; 202:117444. [PMID: 34314923 DOI: 10.1016/j.watres.2021.117444] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/21/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
Drinking water plumbing systems appear to be a unique environment for microorganisms as they contain few nutrients but a high mineral concentration. Interactions between mineral content and bacteria, such as microbial calcium carbonate precipitation (MCP) however, has not yet attracted too much attention in drinking water sector. This study aims to carefully examine MCP behavior of two drinking water bacteria species, which may potentially link scaling and biofouling processes in drinking water distribution systems. Evidence from cell density evolution, chemical parameters, and microscopy suggest that drinking water isolates can mediate CaCO3 precipitation through previously overlooked MCP mechanisms like ammonification or biosorption. The results also illustrate the active control of bacteria on the MCP process, as the calcium starts to concentrate onto cell surfaces only after reaching a certain cell density, even though the cell surfaces are shown to be the ideal location for the CaCO3 nucleation.
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Affiliation(s)
- Xiaoxia Liu
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, the Netherlands;; Institute of Hydraulics and Rural Water Management, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Gernot Zarfel
- Diagnostic and Research Center for Molecular BioMedicine, Medical University of Graz, Graz, Austria
| | - Renata van der Weijden
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, the Netherlands;; Sub-Department of Environmental Technology, Wageningen University, Wageningen, the Netherlands
| | - Willibald Loiskandl
- Institute of Hydraulics and Rural Water Management, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Brigitte Bitschnau
- Institute of Physical and Theoretical Chemistry, Graz University of Technology, Graz, Austria
| | - Inez J T Dinkla
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, the Netherlands
| | - Elmar C Fuchs
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, the Netherlands;; Optical Sciences group, Faculty of Science and Technology, University of Twente. Twente. the Netherlands.
| | - Astrid H Paulitsch-Fuchs
- Diagnostic and Research Center for Molecular BioMedicine, Medical University of Graz, Graz, Austria; School of Health Sciences & Social Work, Biomedical Sciences, Carinthia University of Applied Sciences, Klagenfurt, Austria
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