Transport and fate of viruses in sediment and stormwater from a Managed Aquifer Recharge site
| Autor: | Joanne Vanderzalm, Saeed Torkzaban, Jiří Šimůnek, Scott A. Bradford, Salini Sasidharan |
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| Rok vydání: | 2017 |
| Předmět: |
Water reclamation
Environmental Engineering 0208 environmental biotechnology Stormwater Transport Aquifer 02 engineering and technology 010501 environmental sciences 01 natural sciences 0105 earth and related environmental sciences Water Science and Technology Hydrology geography geography.geographical_feature_category Solid Phase Inactivation Sediment Groundwater recharge Managed Aquifer Recharge Additional research 020801 environmental engineering Virus Current (stream) Solid phase inactivation Assessment methods Environmental science Calcium |
| Zdroj: | Sasidharan, S; Bradford, SA; Simunek, J; Torkzaban, S; & Vanderzalm, J. (2017). Transport and fate of viruses in sediment and stormwater from a Managed Aquifer Recharge site. JOURNAL OF HYDROLOGY, 555, 724-735. doi: 10.1016/j.jhydrol.2017.10.062. UC Riverside: Retrieved from: http://www.escholarship.org/uc/item/6tz0p6zb |
| DOI: | 10.1016/j.jhydrol.2017.10.062. |
| Popis: | © 2017 Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ This author accepted manuscript is made available following 24 month embargo from date of publication (Oct 2017) in accordance with the publisher’s archiving policy Enteric viruses are one of the major concerns in water reclamation and reuse at Managed Aquifer Recharge (MAR) sites. In this study, the transport and fate of bacteriophages MS2, PRD1, and ΦX174 were studied in sediment and stormwater (SW) collected from a MAR site in Parafield, Australia. Column experiments were conducted using SW, stormwater in equilibrium with the aquifer sediment (EQ-SW), and two pore-water velocities (1 and 5 m day−1) to encompass expected behavior at the MAR site. The aquifer sediment removed >92.3% of these viruses under all of the considered MAR conditions. However, much greater virus removal (4.6 logs) occurred at the lower pore-water velocity and in EQ-SW that had a higher ionic strength and Ca2+ concentration. Virus removal was greatest for MS2, followed by PRD1, and then ΦX174 for a given physicochemical condition. The vast majority of the attached viruses were irreversibly attached or inactivated on the solid phase, and injection of Milli-Q water or beef extract at pH = 10 only mobilized a small fraction of attached viruses ( μs > kdet > μl, and katt was several orders of magnitude greater than μl. Therefore, current microbial risk assessment methods in the MAR guideline may be overly conservative in some instances. Interestingly, virus BTCs exhibited blocking behavior and the calculated solid surface area that contributed to the attachment was very small. Additional research is therefore warranted to study the potential influence of blocking on virus transport and potential implications for MAR guidelines. |
| Databáze: | OpenAIRE |
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