Abstract
Shrimp waste is a common waste in seafood processing. It is used as part of the fish meal which is added to feed. Bearing in mind the Green Deal and sustainability development, it was proposed to use northern prawn shells to obtain chitosan (Ch), which could then be used for polyurethane (PUR) modification. In ports, oil micro-spills often flow into the waters of gulfs and, consequently, into the sea. Systematic chemical and petroleum water pollution may pose a threat to flora and fauna. In this study, chitosan, which was obtained from shrimp shells, was used to synthesize polyurethane–chitosan foams (PUR+Ch) with different chitosan concentrations. Selected physico-chemical and sorption properties in relation to oil and water of these materials were determined. It was found that the amount of Ch added to the foam affected its morphology, hardness, density, and thermal and sorption properties. PUR foam with a 1.5% weight of Ch was characterized as having the highest water and oil sorption. The advantages of the tested material as an innovative product with potentially significant proecological values were estimated using strengths–weaknesses–opportunities–threats (SWOT) analysis. The conducted preliminary research made it possible to demonstrate the use of these materials in the processes of water treatment with the mentioned micropollutants.
Highlights
Climate change, environmental pollution, and environmental degradation are problems in Europe and in the world generally [1].A total of 193 member states of the United Nations adopted the 2030 Agenda for Sustainable Development Goals on the 25 September 2015 in New York [2]
It was found that the amount of added chitosan and the method of its addition to the foam affected the morphology of the foams, as well as their hardness, density, and thermal and sorption properties
The water sorption properties of PUR and polyurethane–chitosan foams (PUR+Ch) foams were investigated in the same way as for oil, but mass measurements were performed after 20 min, 1 day, 1 week, and 2 weeks, without sample regeneration
Summary
Environmental pollution, and environmental degradation are problems in Europe and in the world generally [1]. The 14th goal of the 2030 Agenda for Sustainable Development Goals, which is essential to the water environment, aims to provide protection for ocean, sea, and marine resources, as well as their sustainable use [7]. The European Green Deal provides an action plan to (1) boost the efficient use of resources by moving to a clean, circular economy, and (2) restore biodiversity and cut pollution. It was found that the amount of added chitosan and the method of its addition to the foam affected the morphology of the foams, as well as their hardness, density, and thermal and sorption properties This preliminary investigation made it possible to demonstrate the use of these materials in the processes of water treatment with oil micro-spills. To life cycle assessment from the perspective of sustainable development [27], and of the tools in a circular economy [28]
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