• Energy Research
• 11. Sustainability close
• 1. No poverty close
• PL close

Sustainable development and environmental protection are among the most important challenges facing humanity today. One important issue is the problem of groundwater and surface water pollution which can lead to the degradation of aquatic ecosystems and negatively affect human health. As a result, new methods and materials are being sought that can help remove contaminants from water in an efficient and environmentally friendly manner. In recent years, there has been increasing interest in composite materials made from used cooking oil. This paper presents attempts to obtain composite materials with the addition of nano-sized zinc oxide and titanium oxide. The characterization of the composite materials was performed using FTIR, XRD, and SEM-EDS; their sorption and photocatalytic abilities were studied using batch mode experiments. The materials obtained exhibited sorption and photocatalytic properties. The highest value of photodegradation efficiency of more than 70% was recorded for the oil composite containing 20% zinc oxide. Composites containing 10% zinc oxide and titanium oxide had comparable sorption efficiencies of about 45% but different photodegradation efficiencies of 0.52% and 15.42%, respectively.

The basic function of the Park and Ride (P&R) facility is to allow users to leave their vehicle on the outskirts of the city and to continue their journey to the city center using means of public transport, e.g., bus, tram, trolleybus, subway, train, or bike. In the first part of the paper, an analysis of the selected factors related to the functioning of P&R facilities in Warsaw (Poland) was performed. The main purpose of this paper was to identify and quantify the influence factors determining the choice of P&R facility during a journey. This analysis was performed for three hypothetical journey scenarios. A list of potential factors determining the choice of P&R facility during travel was compiled after conducting previous research in this area and studying the worldwide scientific literature on the subject. The structural parameters of the multinomial logit model were estimated based on the data from the survey conducted in Warsaw. The results of the analyses indicate that the decision to choose a hypothetical journey scenario depends on many factors, but primarily on the level of education, the number of years of having a driving license, age, the number of kilometers traveled during the year, and the performed activity.

Abstract A conceptual model of BIM-based design and refurbishment, based on pre-built indicators and allowing the assessment of the building energy demand and eco-building parameters, is presented. The new approach presented in this model creates a knowledge-based decision-making environment for refurbishment strategies and quality control, in this way creating the preconditions to bridge the gap between expected and actual energy performance. The model with integration of new BIM-based optimization subsystems enables energy management and optimization processes. For a comprehensive evaluation of refurbishment measures, it is suggested to include energy efficiency, eco-efficiency, and economic parameters.

The catering market in Poland, especially in such areas as the Old Town in Gdańsk, is constantly developing, and in recent years there has been a great development in gastronomic offerings; therefore, the potential in this sector is significant. The gastronomic services market in Gdańsk is subject to segmentation due to the diversity of consumer needs and the location of the outlets. New points are constantly appearing on the gastronomic map of this historical part of Tri-City, where every tourist, regardless of the adopted form of tourism, can satisfy his or her needs without any problems. The authors aimed to analyse the impact of catering services on the tourism industry. In particular, the study is an attempt to identify the functioning of the contemporary culinary market and the conditions for the development of catering services and to describe the forms of enterprises providing this service. The variety of aspects of the research subject matter, oscillating around the main objective, made it necessary to formulate the following research hypotheses: first hypothesis (H1)—catering services influence the management of the tourism industry; second hypothesis (H2)—the tourist is the main determinant shaping demand; third hypothesis (H3)—the tourist contributes to benefits in the sphere of supply. The research tool was two structured, short survey questionnaires used to verify the hypothesis. The survey was conducted during the summer of 2018. The survey involved 20 restaurateurs from the Old Town in Gdańsk and 438 random tourists over 15 years old. The survey of tourists can be characterised as randomised focus groups. The questionnaire addressed to owners of catering establishments was a representative survey. The implication of research carried out among representatives of the tourism segment is the development of a foodservice market based on a marketing strategy that takes into account the specific needs of consumers and the constant monitoring of market behaviour in order to keep up with the changes that occur in it.

In the face of constantly progressing climate and environmental changes that lead to hydrological droughts and, in consequence, to permanent water deficiency, the administration and management of water resources have become priority elements of local policy in rural areas. New water management methods are based on numerous digital tools and solutions. They allow, for instance, the optimising of water consumption, or the accelerating and increasing in the effectiveness of communication with local communities. This governance model fits into the green economy. This paper presents digital tools and ways of using them for water management in rural communities. We assumed that a higher degree of the socio-economic development in rural communities affects the use of high technology in the local governance. According to surveys, suburban communities featuring a higher level of urbanisation more often invest in ‘smart’ technologies, reflected by a more rational management of water resources.

Abstract The authors main idea is to build energy plus buildings by means of architectural processes to design passive houses according to the Darmstadt Standard with additional equipment powered by renewable energy. The article presents a comparative financial analysis of passive house buildings with an additional source of power to charge electric cars in Poland and the United States. The analysis is based on market data while also taking into consideration inflation and increases in energy costs. The methodology is based on the calculations required by USA banks for obtaining credit. The emphasis is also on the distinction between commonly used term passive house and the term passive house in accordance with the Darmstadt Standard. The authors are introducing a new terminology to define buildings wrongly named as “passive”. Now Authors will name them Pseudo-Passive Buildings. The research shows that it is profitable to construct nearly zero-energy buildings with photovoltaic installation and the discounted rate on return of investment does not exceed the mortgage length.

To conduct, in an effective way, the non-destructive testing (NDT) of products—in particular, the fluorescent penetrant inspection (FPI)—remains a challenge. Therefore, the aim of this work is to propose the method of support in the choice of a fluorescent penetrant to be used in FPI research. In the results of the usage of the proposed procedure, it is demonstrated that it is possible to reduce the negative impacts on the environment by FPI processes (through sustainability), while including other criteria, i.e., financial, security, productive (Industry 4.0), and societal (Society 5.0) criteria. The essence of the proposed method is to integrate two methods of decision support. These were the analytic hierarchy process (AHP) method and the cost–quality analysis (AKJ). Using the AHP method, the quality level of fluorescent penetrant (to the satisfaction of the customer)—which included the sustainability criteria—are calculated. These criteria include natural environment, reactivity, combustibility, level of sensitivity, and type of washing (emulsification). Then, with the help of the AKJ, the most favorable penetrant—in terms of quality and cost—is calculated and, thus, indicated. This choice must include the concept of sustainable development. Therefore, this method can be used to choose fluorescent penetrants in manufacturing and service enterprises which carry out FPI.

This article deals with the new challenges facing modernising railways in Poland. We look at the problem of the efficiency of the power supply system (3 kV DC) used in the context of the increasing use of electric vehicles, which have a higher demand for electricity than the old type. We present and characterise the power supply system in use, pointing out its weaknesses. We consider a case study. The load of the power supply network generated by the rolling stock used in Poland was examined using a microsimulation. A real train timetable was taken into account on a fragment of one of the most important railway line sections in one of the urban agglomerations. Then the results were compared with the results of a microsimulation in which old units were replaced by new trains. These tests were carried out in several variants. We found critical points in the scheduling of railway system use. Our results indicate that it is becoming increasingly necessary to take into account the permissible load capacity of the supply network in certain traffic situations in the process of timetable construction.