COST-BENEFIT ANALYSIS AND ENVIRONMENTAL IMPACT BY USING COMBINED RENEWABLE RESOURCES IN THE PRODUCTION OF 10 MW OF ELECTRICITY

The aim of the paper is to analyze the two components of renewable energy - the sun and the wind to support a transition to a climate-friendly society, based on sustainable energy supply and consumption, which minimizes the negative effects on natural resources, environment, climate and human health, being both economically feasible and socially acceptable. The paper will analyze the production of 10MW electricity using wind and sun as renewable resources. The study area is Moldova Noua, Romania. The RETScreen Expert software will be used for the analysis

PRINCIPLES OF INTEGRATION THE AGRI-DRONES IN AGRICULTURAL PRODUCTION ENVIRONMENTS. NEW CONCEPTS TOWARDS AGRICULTURE-5.0

Unmanned aerial systems (UAS) have a crucial contribution to the development of precision agriculture (PA). Agricultural drones or agri-drones make the rapid transition from the military system (UAVs) to domestic applications in the PA, in order to provide the necessary support to farmers for the surveillance of large crops and / or in carrying out operations to protect or stimulate crops. This revolutionary leap contributes to the considerable savings of the farmer, as well as to the revolution of traditional agriculture towards intelligent agriculture or PA. Managerial decisions based on the three principles presented in the paper (EVI - Enhanced Vegetation Index, ZP - Zero Pollution and ROI - Return on Investment) are easier to make through the approach driven by digital technology. The information-based management cycle lays foundations for sustainable PA of the future (agriculture-5.0)

Biological water treatment in a recirculating aquaculture system

Biological water filtration is a process by which toxic compounds are removed from water using organisms. A well-sized biological filter is extremely important as part of a recirculating aquaculture system for fish farming. Biological water filtration equipment in aquaculture recycling systems is a technological set that restores the vital qualities of wastewater from fish ponds, thus allowing its reus

An Innovative Approach to Assess the Ecotoxicological Risks of Soil Exposed to Solid Waste

The adoption of sustainable waste management strategies is a challenge faced by most European countries, mainly due to the need to generate less waste and replace landfills with new methods of waste treatment, associated with increases in the separate collection of waste and recycling rates. This paper highlights the significance of environmental legislation regarding waste removal to protect ecosystems. The aim was to predict ecological responses to heavy metals in soil exposed to hazardous waste and to identify environmental hazards in landfills, small illegal waste dumps, and litter, in addition to identifying if heavy metal accumulation in the investigated soil samples showed a single or cumulative risk. This is an innovative method to predict the ecological risk generated by hazardous waste landfills. The assessment of ecological risks was based on the evaluation of a heavy metal soil contamination factor, pollution index of soil loadings, a geo-accumulation index for heavy metals, and potential ecological risk. The current study is also the first to attempt to identify the dimension of risk based on the type of waste deposit (landfill, small illegal waste dump, and litter) and to identify potential patterns. The geological index corresponding to cadmium Igeo(Cd) showed heavy contamination in the soil samples from the landfill and moderate contamination for those from the illegal waste dumps. These findings indicate that soil contamination is influenced by contamination time, anthropogenic processes, and a history of industrial activity, and not only by waste composition and storage. The present study shows that cadmium might be considered a latent fingerprint for waste disposal, which is correlated to the industrialization level and rehabilitation procedures