Mercury contamination from human activities is a severe environmental problem. The low cost of rhizofiltration of heavy metal-contaminated environments is causing an increasing interest in these technologies. The present study demonstrates the effectiveness of mercury removal from water by phytoremediation using S. natans. Plants cultured and collected from the environment were used. The study used Hoagland’s liquid medium contaminated with mercury: 0.15, 0.20, and 0.30. The bioconcentration factor obtained was 275–780. The relative growth rate was up to 0.12 g/gd and was much better for cultured plants than those collected from the environment. The removal rate of toxic metal was up to 94%. Total protein increased for cultures plants by up to 84%, while it decreased by up to 30% for those taken from the environment. Total chlorophyll for cultured plants decreased by up to 54%, which could be due to the toxic effect of the metal.

Light pollution significantly interferes with animal and human life and should, therefore, be included in the factors that threaten ecosystems. The main aim of this research is to develop a methodology for monitoring environmental and social elements subjected to light pollution in anthropogenic areas. This research is based on yearly and monthly photographs acquired from the Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the Suomi National Polar-Orbiting Partnership (Suomi NPP) satellite; land cover data from the CORINE Land Cover (CLC) program; and environmental data from the European Environment Agency (EEA) and the World Database on Protected Areas (WDPA). The processing of input data for further analyses, the testing of the methodology and the interpretation of the final results were performed in GIS-type software (ArcGIS Pro). Light pollution in the investigated area was analyzed with the use of maps generated for the years 2014 and 2019. The environmental and social elements were spatially identified in five light pollution classes. The research results demonstrate that the proposed methodology allows for the identification of environmental and social elements that emit light, as well as those that are subjected to light pollution. The methodology used in this work allows us to observe changes resulting from light pollution (decreasing or increasing the intensity). Owing to the use of publicly available data, the methodology can be applied to light pollution monitoring as part of spatial planning in anthropogenic areas. The proposed methodology makes it possible to cover the area exposed to light pollution and to observe (almost online) the environmental and social changes resulting from reductions in light emitted by anthropogenic areas.

Quality Evaluation of Biogas and Selected Methods of its Analysis: There were presented technological and ecological aspects of biogas quality evaluation and introduced an overview of the limits of its selected parameters. There were characterized analytical methods for determining the basic composition of biogas, hydrogen sulfide, ammonia, condensation, dust, oils, siloxanes, and aggregated content of sulfur, chlorine and fluorine. The result of comparative analysis and literature studies are proposes of the most adequate to the studies of biogas - analytical methodologies.

Sensors are a key component of virtual reality (VR) technology, as they enable motion tracking, interaction with the environment, and realistic representation of user behaviour in virtual space. VR technology is gaining increasing importance in engineering, offering new ways to support research, analysis, and training. This article examines its applications in four key areas: surveying and geomatics, mining, environmental protection, and occupational safety. The study is based on a review of the scientific literature indexed in the Scopus database, with the aim of highlighting both the potential of VR and directions for its future development. The findings indicate that VR provides effective tools for analyzing, interpreting, and visualizing complex geospatial data. It enables realistic simulations of mining processes, supports the monitoring of environmental impacts, and facilitates environmental education by creating engaging, immersive experiences. In occupational safety, VR allows hazard scenarios and accident events to be reproduced in a safe yet highly realistic environment, significantly enhancing the effectiveness of training. This is made possible through the integration of sensors with virtual reality, further enhancing immersion in the environment. Despite these advantages, several barriers have been identified. They include technological challenges, insufficient numbers of trained specialists, health and ergonomics concerns, resistance to organizational change, ethical considerations, and limited funding. It is clear that the future of VR in engineering will be shaped by continuous technological progress combined with growing attention to behavioural aspects of training and user interaction. These trends are expected to drive the creation of increasingly advanced and effective tools. The article thus provides a foundation for further exploration of VR as an integral part of engineering practice.

Life cycle assessment (LCA) is currently the most popular technique for assessing the environmentalimpact of products, services and technologies over their entire life cycle ‘from cradle to grave’, ‘cradleto gate’ depending on the system boundary set for the study, or in the case of closed-loop ‘cradle tocradle’. The impact is determined taking into account the different categories of environmentalimpact. Although the method is divided into 4 basic clearly defined stages: goal and scope, life cycleinventory, life cycle impact assessment and interpretation, almost any of these stages can be extendedwith voluntary elements making the analysis much more detailed and difficult. An LCA analysis canbe carried out using different methods depending on the availability of data, the reason for the studyor the target group. The basis for conducting an LCA is to collect the necessary high-quality data,preferably from an original source, which is often very time-consuming. LCA databases (e.g.Ecoinvent, AusLCI, Agri-footprint, worldsteel) are helpful in this respect. Given the continuousdevelopment of LCA, the market offers many digital tools to perform LCA analyses (e.g. SimaPro,openLCA, OneClickLCA).The use of LCA makes it possible to locate system weaknesses that require modification in order toreduce the negative environmental impact of products, services and technologies. The article presentsconcepts with examples and the standards contained in EN ISO 14040 and EN ISO 1404.

Compliance with occupational safety and health (OSH) standards and safe employee behaviour largely depend on the level of management’s commitment to respecting occupational safety and health laws and regulations. A safe work environment is one that is consistent with the idea of sustainability and supports the implementation of the Sustainable Development Goals (SDGs), including in particular: SDG3 Good health and well-being, SDG8 Decent work and economic growth. and SDG16 Peace and justice. The purpose of this article is to provide an employee assessment of mine leaders commitment to creating safe working conditions as one element in shaping an OSH culture. The analysis is based on the results of a survey conducted in 21 rock quarries in Poland, which collected 444 questionnaires completed by employees at various organizational levels—from workers, managers, administrative and engineering employees. The questionnaire included basic socio-demographic characteristics and statements concerning the level of involvement of mine management in workers compliance with safety and health rules and regulations. The results of the survey indicate that in the analysed rock mines, the leaders fulfil their duties in accordance with OSH rules and regulations and organise the work of all employees at a high level of safety. Despite this, many survey participants do not see managers responding to unsafe behaviour by employees. Respondents indicate that the existence of OSH regulations and their enforcement by leaders is necessary to maintain a high level of safety in mines. This study has helped to characterise the state of rock mining in the context of creating a safety culture and can provide important information in the search for solutions to increase safety levels in Polish rock mining making it more sustainable.