Disinfection performance of adsorption using graphite adsorbent coupled with electrochemical regeneration for various microorganisms present in water
Article
Article Title | Disinfection performance of adsorption using graphite adsorbent coupled with electrochemical regeneration for various microorganisms present in water |
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ERA Journal ID | 124478 |
Article Category | Article |
Authors | Hussain, S. N., Trzcinski, A. P., Asghar, H. M. A., Sattar, H., Brown, N. W. and Roberts, E. P. L. |
Journal Title | Journal of Industrial and Engineering Chemistry |
Journal Citation | 44, pp. 216-225 |
Number of Pages | 10 |
Year | 2016 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 1226-086X |
1876-794X | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jiec.2016.09.009 |
Abstract | The disinfection performance of the process of adsorption using a graphitic material combined with electrochemical regeneration for a range of microorganisms including bacteria, fungi, yeast and protozoa in a laboratory scale sequential batch reactor is demonstrated. The bacterial species studied were pseudomonas aeruginosa,Staphylococcus aureus and Legionella pneumophila. A 3.0 log10 reduction in the concentration of P. aeruginosa cells was achieved with the adsorbent that was regenerated at 30 mA cm�2 with 100% regeneration on each adsorption cycle. The process was quite effective in removing S. aureus present in water with a significantly higher reduction in the number of cells (ca. 9-log10 reduction) at relatively low current density (10 mA cm�2). Similarly, L. pneumophila were removed from water with a ca. 7.5-log10 reduction in the number of bacterial cells. The SEM images confirmed the adsorption of L. pneumophila onto the adsorbent and its electrochemical regeneration at 20 mA cm�2 that is considered a refractory pathogen against chlorination. The process was also found to be suitable for disinfecting fungal spores, Aspergillus awamori and yeasts including Saccharomyces cerevisiae and Rhodosporidium turoloides. However, the removal of Cryptosporidium parvum from water was not demonstrated successfully. The preliminary results suggest that using a chloride free environment and a relatively high current density could be useful in disinfecting C. parvum. |
Keywords | disinfection, adsorption, electrochemical regeneration, graphite intercalation compound |
ANZSRC Field of Research 2020 | 400411. Water treatment processes |
410404. Environmental management | |
401102. Environmentally sustainable engineering | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | University of Manchester, United Kingdom |
University of the Punjab, Pakistan | |
Arvia Technology, United Kingdom | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q39wx/disinfection-performance-of-adsorption-using-graphite-adsorbent-coupled-with-electrochemical-regeneration-for-various-microorganisms-present-in-water
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