Isolation, identification and biodiversity of antiscalant degrading seawater bacteria using MALDI-TOF-MS and multivariate analysis
Author | Ashfaq M.Y. |
Author | Al-Ghouti M.A. |
Author | Qiblawey H. |
Author | Rodrigues D.F. |
Author | Hu Y. |
Author | Zouari N. |
Available date | 2020-04-16T06:56:46Z |
Publication Date | 2019 |
Publication Name | Science of the Total Environment |
Resource | Scopus |
ISSN | 489697 |
Abstract | Seawater reverse osmosis (SWRO) is a commonly used desalination technique owing to its lesser environmental and economic impacts as compared to thermal desalination techniques. Antiscalants are used in SWRO to reduce membrane scaling caused by the supersaturation of salts present in feed water. However, to remain effective in reducing membrane scaling, antiscalants should be highly stable and resistant to biological degradation by seawater microorganisms. In this research, several bacteria from Qatar's seawater were isolated and screened for their ability to use antiscalants as a carbon and energy source. The biodiversity of antiscalant degrading seawater bacteria was demonstrated through combining the techniques of MALDI-TOF MS and principle component analysis. It was found that the bacteria isolated from Qatar's seawater such as H. aquamarina, H. elongata, P. fragi, P. stutzeri and others can degrade antiscalants and use them as a carbon and energy source. It was observed that the growth rates varied based on the type of antiscalant and the bacteria used. Among the tested strains, H. aquamarina, which is also known for its potential to cause biofouling, demonstrated the highest growth rates in antiscalants media. Thus, it was concluded that there is wide variety of bacteria in Qatar's seawater that can biodegrade the antiscalants; reducing their efficiency to combat membrane scaling. Since, these antiscalants will be used as a source of carbon and energy, microbial growth will increase resulting in enhanced membrane biofouling in SWRO. |
Sponsor | This publication was made possible by NPRP grant # [ 9-318-1-064 ] from the Qatar National Research Fund (a member of Qatar Foundation). The findings achieved herein are solely the responsibility of the author[s]. Many thanks to Dr. Radhouane Ben Hamadou and Dr. Pedro Range for their assistance in collecting seawater samples and to Ms. Dana A. Da'na and Ms. Shazia Bibi for their assistance in Lab work. Special thanks to Microbiology Laboratory, Hamad Medical Corporation for providing facilities for MALDI-TOF MS technique. |
Language | en |
Publisher | Elsevier B.V. |
Subject | Antiscalant degrading bacteria MALDI-TOF-MS Microorganisms Multivariate analysis Seawater reverse osmosis |
Type | Article |
Pagination | 910-920 |
Volume Number | 656 |
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Chemical Engineering [1141 items ]