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Nutrient Analysis of Food Waste from Ships’ Greywater in the Baltic Sea

Latvian Maritime Academy, Flotes Street 12 k-1, LV-1016 Riga, Latvia
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Academic Editor: Judith S. Weis
Water 2021, 13(17), 2421; https://doi.org/10.3390/w13172421
Received: 1 August 2021 / Revised: 29 August 2021 / Accepted: 30 August 2021 / Published: 3 September 2021
(This article belongs to the Section Water Quality and Contamination)
This case study presents the results of assessments of the potential risk of pollution by food waste in different applied shipping scenarios. A four-step model was used to analyse the applied procedures. The first step of the study involved the identification of possible strategies for on-board food waste management. In the second step, physicochemical tests of visually selected greywater detected high contents of nutrients (NTotal ≤ 238 mg·L−1 and PTotal ≤ 71 mg·L−1). Daily nutrient content (DNC) calculations of different food waste management scenarios allowed us to estimate the highest emission value from the discharge of greywater mixed with shredded food waste in the third step. In the final stage of the study, the results obtained made it possible to qualitatively assess the impact of DNC load on food waste management methods in the Baltic Sea environment. This study highlights the potential risk of polluting the Baltic Sea with nutrients and other contaminants in various scenarios, which will impact the marine recovery process. The presented research helps to outline waste management approaches for the reduction of these risks. View Full-Text
Keywords: greywater; food waste; nutrients; pollution; ship emissions; Baltic Sea; waste management greywater; food waste; nutrients; pollution; ship emissions; Baltic Sea; waste management
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MDPI and ACS Style

Kalnina, R.; Demjanenko, I.; Gorbacenko, D.; Priednieks, V.; Baronins, J. Nutrient Analysis of Food Waste from Ships’ Greywater in the Baltic Sea. Water 2021, 13, 2421. https://doi.org/10.3390/w13172421

AMA Style

Kalnina R, Demjanenko I, Gorbacenko D, Priednieks V, Baronins J. Nutrient Analysis of Food Waste from Ships’ Greywater in the Baltic Sea. Water. 2021; 13(17):2421. https://doi.org/10.3390/w13172421

Chicago/Turabian Style

Kalnina, Renate, Ieva Demjanenko, Dzesika Gorbacenko, Valdis Priednieks, and Janis Baronins. 2021. "Nutrient Analysis of Food Waste from Ships’ Greywater in the Baltic Sea" Water 13, no. 17: 2421. https://doi.org/10.3390/w13172421

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