UV-based technologies for marine water disinfection and the application to ballast water: Does salinity interfere with disinfection processes?

Moreno-Andrés, Javier; Romero-Martínez, Leonardo; Acevedo-Merino, Asunción; Nebot, Enrique

doi:10.1016/j.scitotenv.2016.12.077

Cited by 39 publications

(11 citation statements)

References 54 publications

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“…Among the parameters used to calculate the UV dose, only the water transmittance changed over the different assays thus it was calculated immediately before the sample irradiation. A previous biodosimetry indicated high correlation ( R 2 = 0.936) between the reduction equivalent dose and the dose calculated theoretically . The UV reactor was mounted on a laboratory rig equipped with plastic reservoirs and a centrifugal pump.…”

Section: Methodsmentioning

confidence: 99%

“…A previous biodosimetry indicated high correlation (R 2 = 0.936) between the reduction equivalent dose and the dose calculated theoretically. 31 The UV reactor was mounted on a laboratory rig equipped with plastic reservoirs and a centrifugal pump. The tubing was configured to either recirculate or move the sample forward, according to the specific experimental setup.…”

Section: Determination Of the Bacterial Survivalmentioning

confidence: 99%

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Comparing the inactivating efficacy of enteric bacteria in seawater treated with different configurations of continuous flow‐through ultraviolet devices: single‐pass and recirculation

Romero-Martínez

Duque-Sarango

Acevedo-Merino

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Industrial and commercial activities may require seawater disinfection for which ultraviolet (UV) irradiation is a widely used technology. Ultraviolet devices are commonly used in laboratory to evaluate the disinfection efficacy, looking for the highest control of the experimental conditions such as collimated beam reactor or continuous flow reactors with recirculation. However, commercial applications usually require the application of the UV treatment by means of one single pass through the reactor. The objective in this article is to evaluate and compare the efficacy achieved by two different continuous flow systems, i.e. single‐pass and recirculation devices, on bacteria in buffered distilled and seawater matrices. RESULTS Survival data obtained with a single‐pass device followed by disinfection kinetics according to the log‐linear + shoulder model, requiring a dose of 5.87 mJ cm−2 to inactivate one log unit of the initial concentration of the pure strain Escherichia coli ATCC 11229. The survival achieved with a recirculation reactor followed by a biphasic model, required 12.86 mJ cm−2 to inactivate one log unit of the initial concentration and showed loss of efficacy at higher doses. There was substantial loss of the inactivating efficacy in the treatment of bacteria in seawater using the recirculation device. Natural populations of Escherichia coli and Enterococcus sp. were more sensitive to the UV treatment. CONCLUSION According to the obtained data and their comparison with previous experiments in the literature, the single‐pass prototype is a better approach for determining the inactivating efficacy of UV systems, in comparison with collimated beam and recirculation devices. © 2019 Society of Chemical Industry

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Section: Methodsmentioning

confidence: 99%

Section: Determination Of the Bacterial Survivalmentioning

confidence: 99%

Comparing the inactivating efficacy of enteric bacteria in seawater treated with different configurations of continuous flow‐through ultraviolet devices: single‐pass and recirculation

Romero-Martínez

Duque-Sarango

Acevedo-Merino

et al. 2019

J of Chemical Tech & Biotech

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“…Lee et al 23 assessed the impact of adding organic carbon additives on the concentration of total residual oxidants in approval test for BWM systems. Moreno-Andre´s et al 24 compared two different UV-based treatment technologies for sea water disinfection and their applications to BWT. Rahman 25 applied the sequential method which consists of steps of emptying and refilling one tank or a pair of tanks for BWE for ships using a model developed in MAXSURF.…”

Section: Related Researchmentioning

confidence: 99%

A fuzzy analytical hierarchy process–weighted linear combination decision-making model for prioritization of ballast water treatment technologies by ship owners in Ghana

Animah

2018

Proceedings of the IMechE

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Giving the ratification of the ballast water management convention, a number of ballast water treatment technologies are emerging in the maritime industry; however, choosing the most appropriate technology has been a big challenge for ship owners because it is a very complex and critical task. The aim of this article is to propose a multi-attribute decision analysis model which integrates the fuzzy analytical hierarchy process and the weighted linear combination method into a more comprehensive approach to select the most appropriate ballast water treatment technology for ship owners. The proposed model consists of 6 attributes (i.e. technological readiness, commercial readiness, operational readiness, seafarer’s skills readiness, biological efficacy readiness and cost of ballast water treatment technologies) and 17 ballast water treatment technologies among which ship owners can choose the best. The fuzzy analytical hierarchy process is used to obtain more realistic weights of the attributes, while the weighted linear combination is applied to prioritize the technologies. To demonstrate the applicability of the model, it is applied to select the best ballast water treatment technology for a ship owner in Ghana. The result shows that the ballast water treatment technology which uses membrane filter is selected as the best. Sensitivity analysis is then carried out to determine the effect of changing attributes’ weights on the final priority rankings of the ballast water treatment technologies. Finally, the model is validated by comparing the obtained results to those from the PROMETHEE model and both results are consistent.

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“…UVC-photocatalytic may be able to completely inhibit the bacteria regrow since the size and structure of bacteria is comparatively simple [9,15], however, for algae it is hard to be thoroughly inactivation by photocatalysis. Though UV/TiO2 performs better than UV alone on ballast water treatment, it can hardly be applied widely since the photocatalytic effects may be affected greatly by salinity in seawater [16].…”

Section: Inhibition Of Organism Regrowth After Uv Irradiationmentioning

confidence: 99%

A Review on Organism Regrowth in UV-based Ballast Water Treatment Systems for the Approval of New G8 Guidelines

Chen¹,

Xie²,

Sen³

et al. 2018

Proceedings of the 2018 7th International Conference on Energy and Environmental Protection (ICEEP 2018)

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In light of urgent need of approval of ballast water management system against the new G8 guidelines, organism regrowth within treated ballast water should be assessed. However, it's the first time for mandatory demands on the evaluation of organism regrowth in ballast water. For the existances of DNA repair enzymes, UV-based systems have the risks of organisms regrowth after treatment. So far a range of algae and bacteria have been observed the recovery after UV irridation in the simulated ballast water or real ballast water during 1-day to 9-day culture. The target organisms, UV doses, recovery date and regrowth enviroment will be compared in such regrowth experiments. Also, the possible pathways of the regrowth will be discussed in the paper, with the consideration of both light repair and dark repair. Based on the reviews of current researches, the available methods will be explored to inhibit the organism regrowth in the UV-based ballast water treatment systems. For the compliance of the new G8 guidelines, UV-based systems are supposed to be assessed on organism regrowth, and the modificaiton methodologies were suggested for the currently approved UV-based systems to minimize the regrowth risks.

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UV-based technologies for marine water disinfection and the application to ballast water: Does salinity interfere with disinfection processes?

Cited by 39 publications

References 54 publications

Comparing the inactivating efficacy of enteric bacteria in seawater treated with different configurations of continuous flow‐through ultraviolet devices: single‐pass and recirculation

Comparing the inactivating efficacy of enteric bacteria in seawater treated with different configurations of continuous flow‐through ultraviolet devices: single‐pass and recirculation

A fuzzy analytical hierarchy process–weighted linear combination decision-making model for prioritization of ballast water treatment technologies by ship owners in Ghana

A Review on Organism Regrowth in UV-based Ballast Water Treatment Systems for the Approval of New G8 Guidelines

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