Image
WTS Database
The subject of interest is:
waterpipe, water-pipe, nargile, narghile, arguileh, arguile, shisha, sheesha, chichi, hubble bubble, hubbly bubbly, goza, hookah, bong
| Title Sort descending | Pub Year | Author | SearchLink |
|---|---|---|---|
| Biodiversity of yeasts, lactic acid bacteria and acetic acid bacteria in the fermentation of "Shanxi aged vinegar", a traditional Chinese vinegar | 2012 | College of Food Science and Technology, Huazhong Agricultural University, Lion Hill Street No.1, Hongshan District, Wuhan, 430070 Hubei Province, PR China. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Food Microbiology
Periodical, Abbrev.
Food Microbiol.
Pub Date Free Form
May
Volume
30
Issue
1
Start Page
289
Other Pages
297
Notes
LR: 20131121; CI: Copyright (c) 2011; JID: 8601127; 0 (RNA, Ribosomal, 16S); Q40Q9N063P (Acetic Acid); 2011/04/04 [received]; 2011/07/28 [revised]; 2011/08/07 [accepted]; 2011/08/16 [aheadofprint]; ppublish
Place of Publication
England
ISSN/ISBN
1095-9998; 0740-0020
Accession Number
PMID: 22265314
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.fm.2011.08.010 [doi]
Output Language
Unknown(0)
PMID
22265314
Abstract
Shanxi aged vinegar is a famous traditional Chinese vinegar made from several kinds of cereal by spontaneous solid-state fermentation techniques. In order to get a comprehensive understanding of culturable microorganism's diversity present in its fermentation, the indigenous microorganisms including 47 yeast isolates, 28 lactic acid bacteria isolates and 58 acetic acid bacteria isolates were recovered in different fermenting time and characterized based on a combination of phenotypic and genotypic approaches including inter-delta/PCR, PCR-RFLP, ERIC/PCR analysis, as well as 16S rRNA and 26S rRNA partial gene sequencing. In the alcoholic fermentation, the dominant yeast species Saccharomyces (S.) cerevisiae (96%) exhibited low phenotypic and genotypic diversity among the isolates, while Lactobacillus (Lb.) fermentum together with Lb. plantarum, Lb. buchneri, Lb. casei, Pediococcus (P.) acidilactici, P. pentosaceus and Weissella confusa were predominated in the bacterial population at the same stage. Acetobacter (A.) pasteurianus showing great variety both in genotypic and phenotypic tests was the dominant species (76%) in the acetic acid fermentation stage, while the other acetic acid bacteria species including A. senegalensis, A. indonesiensis, A. malorum and A. orientalis, as well as Gluconobacter (G.) oxydans were detected at initial point of alcoholic and acetic acid fermentation stage respectively.
Descriptors
Links
Book Title
Database
Publisher
Elsevier Ltd
Data Source
Authors
Wu,J.J., Ma,Y.K., Zhang,F.F., Chen,F.S.
Original/Translated Title
URL
Date of Electronic
20110816
PMCID
Editors
|
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| Biofilm amount estimation by fluorescein diacetate | 1998 | De Rosa, S., Dipartimento 'Difesa del Suolo', Universita della Calabria, 87040 Montalto Uffugo (CS), Italy | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Water research
Periodical, Abbrev.
Water Res.
Pub Date Free Form
1998/09
Volume
32
Issue
9
Start Page
2621
Other Pages
2626
Notes
Place of Publication
ISSN/ISBN
0043-1354
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
Various methods for direct and indirect biofilm amount estimation are available but most of them have been developed on free cell cultures and/or their application to biofilm analysis often implies biofilm removal from the solid surface or extraction procedures. This work presents a method to measure biofilm bacterial activity, that does not require the removal step. It uses fluorescein diacetate (FDA), a fluorogen (fluorescein) conjugated to two acetate radicals. This compound, once hydrolyzed by an exoenzyme that is present in almost all bacteria, releases the fluorogen that has an absorbance at 490 nm. Experimental tests have shown a good correlation between the absorbance of the solution at 490 nm and bacterial concentrations. This method may be particularly helpful in potable water pipe control to indicate where and when it is necessary to perform corrective actions to stop and/or reduce biofilm growth.
Descriptors
drinking water, fluorescein diacetate, article, biofilm, pipeline, priority journal, water quality, water treatment
Links
Book Title
Database
Embase
Publisher
Data Source
Embase
Authors
De Rosa,S., Sconza,F., Volterra,L.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
|
|||
| Biofilm formation and effect of caspofungin on biofilm structure of Candida species bloodstream isolates | 2009 | Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil. jantgferr@hotmail.com | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Antimicrobial Agents and Chemotherapy
Periodical, Abbrev.
Antimicrob.Agents Chemother.
Pub Date Free Form
Oct
Volume
53
Issue
10
Start Page
4377
Other Pages
4384
Notes
LR: 20141207; JID: 0315061; 0 (Antifungal Agents); 0 (Echinocandins); F0XDI6ZL63 (caspofungin); OID: NLM: PMC2764222; 2009/06/22 [aheadofprint]; ppublish
Place of Publication
United States
ISSN/ISBN
1098-6596; 0066-4804
Accession Number
PMID: 19546368
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1128/AAC.00316-09 [doi]
Output Language
Unknown(0)
PMID
19546368
Abstract
Candida biofilms are microbial communities, embedded in a polymeric matrix, growing attached to a surface, and are highly recalcitrant to antimicrobial therapy. These biofilms exhibit enhanced resistance against most antifungal agents except echinocandins and lipid formulations of amphotericin B. In this study, biofilm formation by different Candida species, particularly Candida albicans, C. tropicalis, and C. parapsilosis, was evaluated, and the effect of caspofungin (CAS) was assessed using a clinically relevant in vitro model system. CAS displayed in vitro activity against C. albicans and C. tropicalis cells within biofilms. Biofilm formation was evaluated after 48 h of antifungal drug exposure, and the effects of CAS on preformed Candida species biofilms were visualized using scanning electron microscopy (SEM). Several species-specific differences in the cellular morphologies associated with biofilms were observed. Our results confirmed the presence of paradoxical growth (PG) in C. albicans and C. tropicalis biofilms in the presence of high CAS concentrations. These findings were also confirmed by SEM analysis and were associated with the metabolic activity obtained by biofilm susceptibility testing. Importantly, these results suggest that the presence of atypical, enlarged, conical cells could be associated with PG and with tolerant cells in Candida species biofilm populations. The clinical implications of these findings are still unknown.
Descriptors
Antifungal Agents/pharmacology, Biofilms/drug effects/growth & development, Candida/drug effects/growth & development/ultrastructure, Echinocandins/pharmacology, Humans, Microscopy, Electron, Scanning
Links
Book Title
Database
Publisher
Data Source
Authors
Ferreira,J. A., Carr,J. H., Starling,C. E., de Resende,M. A., Donlan,R. M.
Original/Translated Title
URL
Date of Electronic
20090622
PMCID
PMC2764222
Editors
|
|||
| Biofilm formation by and antifungal susceptibility of Candida isolates from urine | 2007 | Department of Medicine and Microbiology and Immunology, Ullmann 1223, 1300 Morris Park Ave., Albert Einstein College of Medicine, Bronx, NY 10461, USA. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Applied and Environmental Microbiology
Periodical, Abbrev.
Appl.Environ.Microbiol.
Pub Date Free Form
Mar
Volume
73
Issue
6
Start Page
1697
Other Pages
1703
Notes
LR: 20140910; GR: D43TW001403/TW/FIC NIH HHS/United States; GR: R0-1 AI59681/AI/NIAID NIH HHS/United States; GR: R01 AI059681/AI/NIAID NIH HHS/United States; GR: R01 AI059681-05/AI/NIAID NIH HHS/United States; JID: 7605801; 0 (Antifungal Agents); 0 (Cultu
Place of Publication
United States
ISSN/ISBN
0099-2240; 0099-2240
Accession Number
PMID: 17261524
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; IM
DOI
AEM.02439-06 [pii]
Output Language
Unknown(0)
PMID
17261524
Abstract
Biofilm formation (BF) in the setting of candiduria has not been well studied. We determined BF and MIC to antifungals in Candida spp. isolates grown from urine samples of patients and performed a retrospective chart review to examine the correlation with risk factors. A total of 67 Candida spp. isolates were grown from urine samples from 55 patients. The species distribution was C. albicans (54%), C. glabrata (36%), and C. tropicalis (10%). BF varied greatly among individual Candida isolates but was stable in sequential isolates during chronic infection. BF also depended on the growth medium and especially in C. albicans was significantly enhanced in artificial urine (AU) compared to RPMI medium. In nine of the C. albicans strains BF was 4- to 10-fold higher in AU, whereas in three of the C. albicans strains and two of the C. glabrata strains higher BF was measured in RPMI medium than in AU. Determination of the MICs showed that planktonic cells of all strains were susceptible to amphotericin B (AMB) and caspofungin (CASPO) and that three of the C. glabrata strains and two of the C. albicans strains were resistant to fluconazole (FLU). In contrast, all biofilm-associated adherent cells were resistant to CASPO and FLU. The biofilms of 14 strains (28%) were sensitive to AMB (MIC(50) of <1 mug/ml). Correlation between degree of BF and MIC of AMB was not seen in RPMI grown biofilms but was present when grown in AU. A retrospective chart review demonstrated no correlation of known risk factors of candiduria with BF in AU or RPMI. We conclude that BF is a stable characteristic of Candida strains that varies greatly among clinical strains and is dependent on the growth medium. Resistance to AMB is associated with higher BF in AU, which may represent the more physiologic medium to test BF. Future studies should address whether in vitro BF can predict treatment failure in vivo.
Descriptors
Antifungal Agents/pharmacology, Biofilms/drug effects/growth & development, Candida/classification/drug effects/isolation & purification/physiology, Culture Media, Drug Resistance, Fungal, Female, Humans, Male, Microbial Sensitivity Tests/methods, Urinary Tract Infections/microbiology, Urine/microbiology
Links
Book Title
Database
Publisher
Data Source
Authors
Jain,N., Kohli,R., Cook,E., Gialanella,P., Chang,T., Fries,B. C.
Original/Translated Title
URL
Date of Electronic
20070119
PMCID
PMC1828833
Editors
|
|||
| Biofilm in water pipelines; a potential source for off-flavours in the drinking water | 2004 | Skjevrak, I., Food Control Authority, N-4033 Stavanger, Norway | Read more... |
|
Source Type
Print(0)
Ref Type
Generic
Periodical, Full
Water Science and Technology
Periodical, Abbrev.
Water Sci. Technol.
Pub Date Free Form
2004/
Volume
49
Issue
9
Start Page
211
Other Pages
217
Notes
Place of Publication
ISSN/ISBN
0273-1223
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
Volatile organic compounds (VOC) are identified in natural biofilm established in plastic pipes used at the drinking water supply. Odour potent VOCs such as ectocarpene, dictyopterene A and C′, geosmin, beta-ionone, 6-methyl-5-hepten-2-one, menthol and menthone were prominent compounds in biofilm in the distribution network and at raw water test sites, and are associated with algae and cyanobacteria present in the raw water source. © IWA Publishing 2004.
Descriptors
6 methyl 5 hepten 2 one, beta ionone, dictyopterene a, dictyopterene c, drinking water, ectocarpene, geosmin, menthol, menthone, plastic, unclassified drug, volatile organic compound, alga, article, biofilm, controlled study, cyanobacterium, flavor, nonhuman, pipeline, water analysis, water supply
Links
Book Title
Database
Embase; MEDLINE
Publisher
Data Source
Embase
Authors
Skjevrak,I., Lund,V., Ormerod,K., Due,A., Herikstad,H.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
|
|||
| Biofilm production and antifungal susceptibility patterns of Candida species | 2004 | Dokuz Eylul Universitesi Tip Fakultesi, Mikrobiyoloji ve Klinik Mikrobiyoloji Anabilim Dali, Izmir. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Mikrobiyoloji bulteni
Periodical, Abbrev.
Mikrobiyol.Bul.
Pub Date Free Form
Jan-Apr
Volume
38
Issue
2-Jan
Start Page
91
Other Pages
98
Notes
LR: 20131121; JID: 7503830; 0 (Antifungal Agents); 0 (Virulence Factors); 7XU7A7DROE (Amphotericin B); 8VZV102JFY (Fluconazole); ppublish
Place of Publication
Turkey
ISSN/ISBN
0374-9096; 0374-9096
Accession Number
PMID: 15293907
Language
tur
SubFile
English Abstract; Journal Article; IM
DOI
Output Language
Unknown(0)
PMID
15293907
Abstract
In this study, biofilm production and antifungal susceptibility of various Candida species were examined and compared. A total number of 156 Candida species (94 C. albicans, 21 C. tropicalis, 18 C. glabrata, 12 C. parapsilosis, 9 C. krusei, 1 C. guilliermondii and 1 C. kefyr) isolated from different clinical specimens were included in the study. The biofilm production of the strains was searched by modified tube adherence and microplate methods. Their antifungal susceptibilities against fluconazole and amphotericin B were determined by microdilution method, according to NCCLS M27-A2 standards. Forty three (27.6%) and 26 (16.7%) of the strains were found to be slime producing by tube adherence and microplate methods, respectively. The agreement between the two methods were detected as 65 percent. The rate of biofilm formation by different species ranged between 17% and 55% by tube adherence test and 0 and 48% by microplate method. No significant difference was found between the biofilm production of C. albicans and non-albicans species by tube adherence test (p=0.29). However; a statistically important difference was found when microplate method was considered (p=0.04). MIC50 and MIC90 values for fluconazole ranged between 4-64 microg/ml and 32-->64 microg/ml for different Candida species while these values changed between 0.25-1 microg/ml and 0.5-2 microg/ml for amphotericin B, respectively. Forty-five (28.8%) and 23 (14.7%) of the isolates were found to be dose dependent susceptible and resistant to fluconazole, respectively. Eleven (6.7%) of the strains had MIC values >1 microg/ml for amphotericin B. When the relation between the biofilm production and the susceptibility categories of the strains for amphotericin B were searched, no statistical differences were found by any of the two methods (p=0.12 and p=0.50). A statistically important difference (p=0.03) was determined by tube adherence test and no important difference (p=0.11) was detected by microplate method when fluconazole susceptibility categories were considered. As a conclusion, it has been determined that biofilm production which is a potential virulence factor for Candida species seems to be in agreement with the antifungal susceptibility categories of the strains especially for amphotericin B when the planktonic cells were used for the susceptibility testing.
Descriptors
Amphotericin B/pharmacology, Antifungal Agents/pharmacology, Biofilms/growth & development, Candida/drug effects/pathogenicity, Dose-Response Relationship, Drug, Drug Resistance, Fungal, Fluconazole/pharmacology, Humans, Microbial Sensitivity Tests, Reproducibility of Results, Virulence Factors
Links
Book Title
Database
Publisher
Data Source
Authors
Yucesoy,M., Karaman,M.
Original/Translated Title
Candida turlerinin biyofilm uretimi ve antifungal duyarlilik paternleri
URL
Date of Electronic
PMCID
Editors
|
|||
| Biofilm production and antifungal susceptibility patterns of Candida species isolated from hospitalized patients | 2007 | muge@baskent.edu.tr | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Mikrobiyoloji bulteni
Periodical, Abbrev.
Mikrobiyol.Bul.
Pub Date Free Form
Apr
Volume
41
Issue
2
Start Page
261
Other Pages
269
Notes
LR: 20131121; JID: 7503830; 0 (Antifungal Agents); 0 (Echinocandins); 304NUG5GF4 (Itraconazole); 7XU7A7DROE (Amphotericin B); 8VZV102JFY (Fluconazole); F0XDI6ZL63 (caspofungin); ppublish
Place of Publication
Turkey
ISSN/ISBN
0374-9096; 0374-9096
Accession Number
PMID: 17682713
Language
tur
SubFile
English Abstract; Journal Article; IM
DOI
Output Language
Unknown(0)
PMID
17682713
Abstract
Biofilm producing Candida species are known to be more resistant to immune response and antimicrobial agents which leads to treatment failure. The aim of this study was to investigate the biofilm production among Candida species that were isolated from hospitalized patients and to compare the in vitro activities of antifungal agents with biofilm production. A total of 116 Candida spp. (79 C. albicans and 37 non-albicans Candida spp.) isolated from various specimens (blood, sterile body fluids, mucosal and skin lesion samples) were included to the study. Fluconazole, itraconazole, amphotericin B and caspofungin susceptibilities of the isolates were determined by broth microdilution method according to CLSI M27-A2 standards. Biofilm production of Candida spp. was determined by microplate method, using brain heart infusion broth supplemented with 0.25% glucose as a growth medium. Biofilm formation was detected in 33 of 116 isolates (28%) and 11 of them (33%) were the strains isolated from hemocultures. Biofilm production was determined more commonly in blood isolates than the strains isolated from other samples (p < 0.05). The biofilm production rate of non-albicans Candida species (41%) was found higher than C. albicans (23%), which the difference was statistically significant (p < 0.05). Amphotericin B and caspofungin were found the most effective antifungals with the MIC90 values of 0.06 microg/ml and 0.5 microg/ml for C. albicans, and 0.5 microg/ml and 1 microg/ml for non-albicans Candida species respectively. The observed positive correlation between the biofilm production and amphotericin B MIC values were found significant (p < 0.05). In conclusion, high biofilm production rates of Candida species may explain the increase in the rate of catheter-related Candida infections.
Descriptors
Amphotericin B/pharmacology, Antifungal Agents/pharmacology, Biofilms/growth & development, Candida/drug effects/physiology, Candidiasis/microbiology, Drug Resistance, Fungal/physiology, Echinocandins/pharmacology, Fluconazole/pharmacology, Fungemia/microbiology, Humans, Itraconazole/pharmacology, Microbial Sensitivity Tests
Links
Book Title
Database
Publisher
Data Source
Authors
Demirbileki,M., Timurkaynak,F., Can,F., Azap,O., Arslan,H.
Original/Translated Title
Hastane kaynakli Candida turlerinde biyofilm olusumu ve antifungal duyarlilik paternleri
URL
Date of Electronic
PMCID
Editors
|
|||
| Biofilms on Hospital Shower Hoses: Characterization and Implications for Nosocomial Infections | 2016 | School of Biology, Georgia Institute of Technology, Atlanta, Georgia, USA Center for Bioinformatics and Computational Genomics, Georgia Institute of Technology, Atlanta, Georgia, USA.; School of Biology, Georgia Institute of Technology, Atlanta, Georgia, | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Applied and Environmental Microbiology
Periodical, Abbrev.
Appl.Environ.Microbiol.
Pub Date Free Form
18-Apr
Volume
82
Issue
9
Start Page
2872
Other Pages
2883
Notes
LR: 20160507; CI: Copyright (c) 2016; JID: 7605801; OID: NLM: PMC4836434 [Available on 10/18/16]; PMCR: 2016/10/18 00:00; 2015/10/30 [received]; 2016/02/23 [accepted]; 2016/05/01 [ppublish]; 2016/03/11 [aheadofprint]; epublish
Place of Publication
United States
ISSN/ISBN
1098-5336; 0099-2240
Accession Number
PMID: 26969701
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; IM
DOI
10.1128/AEM.03529-15 [doi]
Output Language
Unknown(0)
PMID
26969701
Abstract
Although the source of drinking water (DW) used in hospitals is commonly disinfected, biofilms forming on water pipelines are a refuge for bacteria, including possible pathogens that survive different disinfection strategies. These biofilm communities are only beginning to be explored by culture-independent techniques that circumvent the limitations of conventional monitoring efforts. Hence, theories regarding the frequency of opportunistic pathogens in DW biofilms and how biofilm members withstand high doses of disinfectants and/or chlorine residuals in the water supply remain speculative. The aim of this study was to characterize the composition of microbial communities growing on five hospital shower hoses using both 16S rRNA gene sequencing of bacterial isolates and whole-genome shotgun metagenome sequencing. The resulting data revealed a Mycobacterium-like population, closely related to Mycobacterium rhodesiae and Mycobacterium tusciae, to be the predominant taxon in all five samples, and its nearly complete draft genome sequence was recovered. In contrast, the fraction recovered by culture was mostly affiliated with Proteobacteria, including members of the genera Sphingomonas, Blastomonas, and Porphyrobacter.The biofilm community harbored genes related to disinfectant tolerance (2.34% of the total annotated proteins) and a lower abundance of virulence determinants related to colonization and evasion of the host immune system. Additionally, genes potentially conferring resistance to beta-lactam, aminoglycoside, amphenicol, and quinolone antibiotics were detected. Collectively, our results underscore the need to understand the microbiome of DW biofilms using metagenomic approaches. This information might lead to more robust management practices that minimize the risks associated with exposure to opportunistic pathogens in hospitals.
Descriptors
Links
Book Title
Database
Publisher
American Society for Microbiology. All Rights Reserved
Data Source
Authors
Soto-Giron,M.J., Rodriguez-R,L.M., Luo,C., Elk,M., Ryu,H., Hoelle,J., Santo Domingo,J.W., Konstantinidis,K.T.
Original/Translated Title
URL
Date of Electronic
20160418
PMCID
PMC4836434
Editors
|
|||
| Biofilms: an emergent form of bacterial life | 2016 | University of Duisburg-Essen, Faculty of Chemistry, Biofilm Centre, Universitatsstrasse 5, D-45141 Essen, Germany.; University of Duisburg-Essen, Faculty of Chemistry, Biofilm Centre, Universitatsstrasse 5, D-45141 Essen, Germany.; Technical University of | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Nature reviews.Microbiology
Periodical, Abbrev.
Nat.Rev.Microbiol.
Pub Date Free Form
11-Aug
Volume
14
Issue
9
Start Page
563
Other Pages
575
Notes
JID: 101190261; ppublish
Place of Publication
England
ISSN/ISBN
1740-1534; 1740-1526
Accession Number
PMID: 27510863
Language
eng
SubFile
Journal Article; IM
DOI
10.1038/nrmicro.2016.94 [doi]
Output Language
Unknown(0)
PMID
27510863
Abstract
Bacterial biofilms are formed by communities that are embedded in a self-produced matrix of extracellular polymeric substances (EPS). Importantly, bacteria in biofilms exhibit a set of 'emergent properties' that differ substantially from free-living bacterial cells. In this Review, we consider the fundamental role of the biofilm matrix in establishing the emergent properties of biofilms, describing how the characteristic features of biofilms - such as social cooperation, resource capture and enhanced survival of exposure to antimicrobials - all rely on the structural and functional properties of the matrix. Finally, we highlight the value of an ecological perspective in the study of the emergent properties of biofilms, which enables an appreciation of the ecological success of biofilms as habitat formers and, more generally, as a bacterial lifestyle.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Flemming,H.C., Wingender,J., Szewzyk,U., Steinberg,P., Rice,S.A., Kjelleberg,S.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
|
|||
| Biofouling reduction in recirculating cooling systems through biofiltration of process water | 2003 | Gerritse, J., TNO Environment, Energy and Process Innovation, 7300 AH Apeldoorn, Netherlands | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Water research
Periodical, Abbrev.
Water Res.
Pub Date Free Form
/
Volume
37
Issue
3
Start Page
525
Other Pages
532
Notes
Place of Publication
ISSN/ISBN
0043-1354
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
Biofouling is a serious problem in industrial recirculating cooling systems. It damages equipment, through biocorrosion, and causes clogging and increased energy consumption, through decreased heat transfer. In this research a fixed-bed biofilter was developed which removed assimilable organic carbon (AOC) from process water, thus limiting the major substrate for the growth of biofouling. The biofilter was tested in a laboratory model recirculating cooling water system, including a heat exchanger and a cooling tower. A second identical model system without a biofilter served as a reference. Both installations were challenged with organic carbon (sucrose and yeast extract) to provoke biofouling. The biofilter improved the quality of the recirculating cooling water by reducing the AOC content, the ATP concentration, bacterial numbers (30-40 fold) and the turbidity (OD660). The process of biofouling in the heat exchangers, the process water pipelines and the cooling towers, was monitored by protein increase, heat transfer resistance, and chlorine demanded for maintenance. This revealed that biofouling was lower in the system with the biofilter compared to the reference installation. It was concluded that AOC removal through biofiltration provides an attractive, environmental-friendly means to reduce biofouling in industrial cooling systems. © 2002 Elsevier Science Ltd. All rights reserved.
Descriptors
adenosine triphosphate, cooling water, organic carbon, protein, sucrose, article, bacterial count, biofilter, biofiltration, biofouling, cooling, fouling prevention, heat transfer, model, pipeline, priority journal, turbidity, water quality, yeast
Links
Book Title
Database
Embase; MEDLINE
Publisher
Data Source
Embase
Authors
Meesters,K. P. H., Van Groenestijn,J. W., Gerritse,J.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
|
|||