This paper deals with waste management in the tourism sector, specifically in the agro-tourism structures. Two regions of Romania and Italy have been considered as case studies in order to promote good practices and actions for sustainable municipal solid waste management. Specific criteria to adopt for the sustainable consumption of beverages and food and for the sustainable use of packaging of various types have been analyzed and suggested. The adoption of an indicator at the level of the single tourist structure has been proposed to help self-analysis that is aimed at setting the priorities of intervention for improving its environmental sustainability.

In recent years, the importance of sustainability and circularity in waste management systems has become increasingly evident. As the world grapples with the environmental consequences of excessive waste generation, it has become crucial to find innovative and sustainable solutions. Universities, as centres of knowledge and research, play a vital role in achieving sustainability and circularity in waste management. The key contribution of this study is to provide: 1) a systematic review of the existing literature concerning sustainable waste management systems (SWMS) implemented in universities; 2) an analysis of the studies presented in this paper identifying applicable approaches and sustainable practices to provide novel guidelines by including waste management system in a circular and sustainable model within universities. Through research, collaboration, education, implementation of sustainable practices, and support for entrepreneurship, universities can strongly contribute to the development and implementation of sustainable waste management practices. As the world continues to face the challenges of waste generation, universities will continue to be at the forefront of finding innovative, sustainable, and circular solutions.

In an increasingly resource-constrained era, using waste and by-products from grain processing has a wide appeal. This is due to the nutritive value and economic aspects of this process and due to its compatibility with the trend towards more sustainable food systems. Following the fundamentals of circular economy, a current need is the effective utilization of grain waste and by-products for conversion into value-added products in the food industry. The aim of this study is twofold: (1) using bibliometrics and the literature found in various databases, we aim to understand the progress of valorizing grain waste and by-products in human nutrition. The literature within various databases, namely, Google Scholar, Web of Science, and Elsevier Scopus, has been evaluated for its merits and values. (2) We aim to explore knowledge-based strategies by reviewing the literature concerning the possible use of grain waste and by-products for the food processing industry, reducing the burden on virgin raw materials. The review allowed us to unlock the latest advances in upcycling side streams and waste from the grain processing industry.

This study investigates the impact of extreme weather conditions on the performance of a wastewater treatment plant (WWTP) in Como, Italy, in terms of influent (inf) and effluent (eff) quality parameters. During winter (October–December), the average temperature was 8.76 °C ± 11.43 °C, with 7.01 mm rainfall, while summer (May–September) averaged 23.24 °C ± 6.2 °C with 5.2 mm rainfall. Despite seasonal variations, the pH levels remained consistent. Phosphorus removal by the WWTP was efficient, with the winter influent averaging 4.16 ± 5.53 mg/L, the winter effluent averaging 0.33 ± 1.06 mg/L, the summer influent averaging 3.53 ± 2.9 mg/L, and the summer effluent averaging 0.31 ± 0.75 mg/L. The COD and BOD₅ levels showed seasonal trends, with a higher winter-influent COD (450.43 ± 560.56 mg/L) than in summer (410.96 ± 302 mg/L). These higher winter values of effluent may be due to lower biological activity at cooler temperatures, affecting the efficiency of organic matter breakdown and treatment. The winter influent BOD averaged 249.57 ± 220.42 mg/L, with the winter effluent being 2.95 ± 2.04 mg/L, while the summer influent BOD was 214.44 ± 345.5 mg/L and the summer effluent was 3.01 ± 7.5 mg/L. The TSSs and Total-N showed similar seasonal patterns, with there being slight decreases in the TSSs removal efficiency during warmer months. Although microplastic pollution was not directly analyzed in this study, wastewater treatment plants play a crucial role in mitigating microplastic contamination. Despite rainfall influencing the phosphorus and organic load concentrations, the studied plant maintained over 90% pollutant removal efficiency, demonstrating resilience and compliance with regulatory standards. The WWTP’s consistent COD and BOD₅ reductions highlight its robust performance amid climate variations

The development of tourism worldwide has raised important concerns in studies based on the actions of tourism activities on community and environment. Nowadays, the research directions also focus on the continuous development of the agro-tourism sector. The connection between agro-tourism and sustainable development (SD) requires new frameworks concerning prototypes/patterns. Hence, the current research focuses on the circular economy (CE) agro-tourism sustainable development. The results and discussion presented in the current paper enhance the sustainable use of the resources within this field. Introducing CE concepts in this sector promotes the adoption of the latest sustainability targets in terms of production, consumption, and ethical choices. In addition, the agro-tourism structures offer the opportunity of involving different stakeholders (e.g., tourists and staff) in the implementation of initiatives to improve the levels of sustainability in this sector. The research presents a model of agro-tourism activities based on two case studies located in rural regions (Italy and Romania) aiming to improve the agro-tourism systems best practices towards SD goals under a CE perspective and taking into account the waste, energy, and air pollution sectors. Moreover, this paper underlines the role of the participants involved in agro-tourism by stimulating important awareness and attention within the agro-tourism sector’s impact on environmental impact and consequently the local community well-being.

Nowadays the global tourism growth has caused a significant interest in research focused on the impact of the tourism on environment and community. The purpose of this study is to introduce a new ranking for the classification of tourist accommodation establishments with the functions of agro-tourism boarding house type by examining the sector of agro-tourism based on a research aimed to improve the economic, socio-cultural and environmental performance of agrotourism structures. This paper links the criteria for the classification of agro-tourism boarding houses (ABHs) to the impact of agro-tourism activities on the environment, enhancing an eco-friendly approach on agro-tourism activities by increasing the quality reputation of the agro-tourism products and services. Taking into account the impact on the environment, agrotourism can play an important role by protecting and conserving it.