scholarly journals Microbial Diversity in Drinking Water of Dishna City, Qena, Egypt and its Relation to Water Physico-Chemo Aspects

2022 ◽  
Author(s):  
Rokaia Elamary ◽  
Khaled Damarany ◽  
Wesam Salem ◽  
Waiel Sayed
Keyword(s):  
Drinking Water ◽  
Microbial Diversity

scholarly journals Microbial diversity in full-scale water supply systems through sequencing technology: a review

RSC Advances ◽  
2021 ◽  
Vol 11 (41) ◽  
pp. 25484-25496
Author(s):  
Wei Zhou ◽  
Weiying Li ◽  
Jiping Chen ◽  
Yu Zhou ◽  
Zhongqing Wei ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Microbial Diversity ◽  
Full Scale ◽  
Water Supply Systems ◽  
Sequencing Technology ◽  
Supply Systems

Drinking water microbial diversity influence in full-scale water supply systems.

Microbial diversity in biofilms on water distribution pipes of different materials

2010 ◽  
Vol 61 (1) ◽  
pp. 163-171 ◽  
Author(s):  
J. Yu ◽  
D. Kim ◽  
T. Lee
Keyword(s):  
Drinking Water ◽  
Microbial Diversity ◽  
Microbial Communities ◽  
Water Distribution ◽  
Coli Strain ◽  
E Coli ◽  
Plastic Materials ◽  
Drinking Water Distribution ◽  
Mixed Water ◽  
Pipe Materials

The effects of pipe materials on biofilm formation potential (BFP) and microbial communities in biofilms were analyzed. Pipe coupons made of six different materials (CU, copper; CP, chlorinated poly vinyl chloride; PB, polybutylene; PE, polyethylene; SS, stainless steel; ST, steel coated with zinc) were incubated in drinking water, mixed water (inoculated with 10% (v/v) of river water) and drinking water inoculated with Escherichia coli JM109 (E. coli), respectively. The highest BFPs were observed from steel pipes, SS and ST, while CU showed the lowest BFP values. Of the plastic materials, the BFP of CP in drinking water (96 pg ATP/cm2) and mixed water (183 pg ATP/cm2) were comparable to those of CU, but the other plastic materials, PB and PE, displayed relatively high BFP. The Number of E. coli in the drinking water inoculated with cultures of E. coli strain showed similar trends with BFP values of the pipe coupons incubated in drinking water and mixed water. Molecular analysis of microbial communities indicated the presence of α- and β-proteobacteria, actinobacteria and bacteroidetes in biofilm on the pipe materials. However, the DGGE profile of bacterial 16S rDNA fragments showed significant differences among different materials, suggesting that the pipe materials affect not only BFP but also microbial diversity. Some plastic materials, such as CP, would be suitable for plumbing, particularly for drinking water distribution pipes, due to its low BFP and little microbial diversity in biofilm.

Arsenic Pollution in the Environment

2015 ◽  
pp. 92-119 ◽  
Author(s):  
Munawar Sultana ◽  
Santonu Kumar Sanyal ◽  
Mohammed Anwar Hossain
Keyword(s):  
At Risk ◽  
Drinking Water ◽  
Microbial Diversity ◽  
West Bengal ◽  
Arsenic Pollution ◽  
Redox Transformations ◽  
Oxidation Reduction ◽  
Arsenic Oxidation

Arsenic (As) pollution in drinking water and soils poses a threat to over 100 million people worldwide, making it one of the largest environmental catastrophes particularly in Bangladesh and West Bengal- where more than one-third of the population are at risk. Microbial As metabolism and mobilization in aqua system is relatively a recent issue.The presence of the arsenic oxidation, reduction, and extrusion genes (aioA, arrA, arsB, and acr3) are explored within microorganisms retrieved from As-contaminated environments. However, the nature of microbiome involved within a certain As transformation environment is still an area of research, specifically how microbial redox transformations occur, that can be exploited to mitigate the longstanding problem. The present chapter overviews the mechanism of As pollution in various environment, microbial diversity in such environment, correlation of their activities to the biogeochemistry of As and finally application of microbes as a bioremediation tool for As detoxification and bioremediation.

Microbial diversity characteristics and the influence of environmental factors in a large drinking-water source

2021 ◽  
Vol 769 ◽  
pp. 144698
Author(s):  
Tingting Jiang ◽  
Sainan Sun ◽  
Yanan Chen ◽  
Yunkun Qian ◽  
Jun Guo ◽  
...  
Keyword(s):  
Drinking Water ◽  
Environmental Factors ◽  
Microbial Diversity ◽  
Water Source ◽  
Drinking Water Source

scholarly journals Effect of Particle Concentration and Pipe Materials on the Formation of Biofilms in Drinking Water Distribution Systems

Water ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 224
Author(s):  
Zhiling Zhao ◽  
Yongji Zhang ◽  
Lu Wang ◽  
Wenhang Shi
Keyword(s):  
Drinking Water ◽  
Microbial Diversity ◽  
Fluorescence Intensity ◽  
Biofilm Formation ◽  
Distribution Systems ◽  
Water Distribution ◽  
Particle Concentration ◽  
Drinking Water Distribution ◽  
Pvc Pipe ◽  
Pipe Materials

Microorganism rebreeding and biofilm shedding enter the water body in the process of a drinking water distribution system (DWDS), which poses a threat to public health. Particles in water can gather pollutants as well as providing favorable growth conditions for bacteria. To date, there are a few studies which focus on the relationship between particles and biofilm formation. Therefore, the microbial diversity of biofilms in the different pipe materials and the effect on particle concentration on biofilm formation were investigated in this study. Experiments were carried out under a simulative DWDS (including iron (DI) and polyvinyl chloride (PVC) pipe). The results showed that the microbial diversity in biofilms followed this order: DI pipe > PVC pipe > DI pipe (upper). Moreover, the microbial biomass of biofilm and the fluorescence intensity of extracellular polymeric substances (EPS, produced by microorganisms) were the largest in the absence of particles. The amount of biofilm bacterial and the fluorescence intensity of EPS both showed first an increasing and then decreasing trend with particle concentration increasing. When particle concentration was relatively low, the absorption of particles and bacteria played a major role, however, with the increasing particle concentration, more stable particle–particle were formed and thus, EPS was easily extracted, resulting in the increase of fluorescence intensity of EPS.

Habitat Association of Klebsiella Species

1985 ◽  
Vol 6 (2) ◽  
pp. 52-58 ◽  
Author(s):  
Susan T. Bagley
Keyword(s):  
Drinking Water ◽  
Gastrointestinal Tract ◽  
Surface Waters ◽  
Industrial Effluents ◽  
Opportunistic Pathogen ◽  
Habitat Associations ◽  
Habitat Association ◽  
Klebsiella Species ◽  
Almost All ◽  
Polluted Waters

AbstractThe genus Klebsiella is seemingly ubiquitous in terms of its habitat associations. Klebsiella is a common opportunistic pathogen for humans and other animals, as well as being resident or transient flora (particularly in the gastrointestinal tract). Other habitats include sewage, drinking water, soils, surface waters, industrial effluents, and vegetation. Until recently, almost all these Klebsiella have been identified as one species, ie, K. pneumoniae. However, phenotypic and genotypic studies have shown that “K. pneumoniae” actually consists of at least four species, all with distinct characteristics and habitats. General habitat associations of Klebsiella species are as follows: K. pneumoniae—humans, animals, sewage, and polluted waters and soils; K. oxytoca—frequent association with most habitats; K. terrigena— unpolluted surface waters and soils, drinking water, and vegetation; K. planticola—sewage, polluted surface waters, soils, and vegetation; and K. ozaenae/K. rhinoscleromatis—infrequently detected (primarily with humans).

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