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Preliminary approach to ecological risk assessment of microplastics in selected coastal regions of Baltic Sea

Krasowska Katarzyna, Dereszewska Alina, Popek Marzenna

Safety and Reliability of Systems and Processes

2022

Summer Safety and Reliability Seminar 2022

133--142

The aim of the study is to provide a primary understanding of the risk of microplastics (MPs) pollution in selected coastal regions of the Baltic Sea waters. This chapter presents preliminary data on the presence of MPs in superficial layers of seawater and sediments of the Puck Bay and Gulf of Gdansk. The environmental risk assessment has been performed for microplastics of the order of size from 0.3 to 5 mm. The detected fragments of microplastics and synthetic textile fibres are present in amounts that do not pose a significant threat to the marine ecosystem. However, microplastics contamination is projected to continue to increase in the region of the Baltic Sea, so it is necessary to monitor and take precautionary actions to minimise concentrations of microplastics in these environments.

Effective methods of chalcedonite processing

Naziemiec Zdzisław, Saramak Daniel

Mining Science

2021

Vol. 28

7--18

Chalcedonite is an unique mineral with high variability in its density, which may cause problems in its industrial utilization. This study was aimed to find more effective methods for chalcedonite processing based on density separation. The method presented in the paper has been patented, and the results from this study showed that separation product were of a higher quality. Products of density separation have also lower variations in their density values what may results in their more effective industrial utilization.