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Abstract Granular materials like sand have gained importance in thermal storage applications due to their stability and cost-effectiveness. However, excessive usage of sand can pose environmental issues. This study investigates recycled construction materials such as glass, asphalt, ceramic, and concrete as alternatives to natural sand for low-temperature TES applications. The materials were processed to similar grain sizes and evaluated for their chemical, thermophysical, and thermal storage properties through a six-hour charging cycle at 60 °C. XRF analysis revealed significant compositions, including high oxygen and silicon content in concrete and sand, respectively. Results indicate that sand with 0.189 W/m K recorded the highest thermal conductivity compared with concrete 0.172 W/m K, glass 0.131 W/m K, ceramic 0.159 W/m K and asphalt 0.159 W/m K. A higher specific heat capacity was observed in concrete at 755 J/kg K, followed by asphalt at 732 J/kg K, glass at 708 J/kg K, and sand at 688 J/kg K. However, ceramic is categorized for a lower specific heat capacity of 682 J/kg K. Absolute density evaluation indicates that sand is the densest material with 2662 kg/m3, contrary to concrete 2480 kg/m3, glass 2421 kg/m3, ceramic 2285 kg/m3, and asphalt 2436 kg/m3. More to the point, the Ragone plot for specific power and energy highlighted that ceramic has a rapid energy release and concrete demonstrated sustained energy storage capabilities. Volumetric power and energy density assessments indicated sand's outstanding performance. However, concrete registered a superior thermal storage among recycled materials. The results highlight that recycled materials, specifically concrete can be used for thermal storage applications like water heating in poor communities.

Crude palm oil extraction is one of the sources of livelihood in Ghana's Central Region. However, the water use and wastewater generation associated with the industry have not been given adequate attention. This study assessed the water consumption and wastewater generation by small-scale crude palm oil extraction mills in the region. Twenty-five (25) mills were selected from four palm oil-processing local government areas in the region. An interview guide was used to obtain information about the operations of the mills and corroborated through structured observations. Water consumption and wastewater generation were measured using a graduated plastic bucket. Water for processing was found to be sourced from hand-dug wells (56%), treated piped water (20%), boreholes with handpumps (16%) and rivers (8%). Water was bought at US$1.93 (boreholes) and US$2.89 (piped water) per cubic metre. The recurrent cost of water was the same as that paid for domestic use. For a litre of palm oil produced, 0.760-2.391 litres of water were consumed and 68-82% returned as wastewater. Sixty-eight percent of the water was used for boiling. The distance to water source influenced the consumption, with higher water consumption recorded for mills with on-plot water sources. Higher recurrent costs of water did not necessarily lead to lower water consumption. There was no significant difference in the water consumption and wastewater production between the wet and dry processing methods. The small-scale palm oil processing industry requires attention to manage a potential competition between commercial and domestic water use in rural and small towns. HIGHLIGHTS 1 L of crude palm oil produced could consume more than twice that volume of water.; Wastewater return factor is 62–89%.; Boiling of fruits consumes 68% of the water and generates 62% of the wastewater.; 10 L of palm oil produced consumes the equivalent of one person's water demand in rural Ghana.; Higher recurrent costs of water did not necessarily lead to lower water consumption.;

Water scarcity is a global issue confronting the present generation, particularly acute in arid regions such as Palestine. Treated wastewater reuse is recognized as a strategic solution. The challenge in obtaining effluent quality that meets the reuse requirements of the area is how to select the best treatment technology. A multi-criteria decision-making method is necessary for assessing the sustainability of different wastewater treatment technologies. This study selected the most sustainable secondary treatment technology that could produce quality effluent for agricultural reuse at the Rafah wastewater treatment plant in the Gaza Strip. The Evidential Reasoning method was applied to evaluate the sustainability of sand filters, constructed wetlands, activated sludge, and bio-tower technologies. The evaluation was based on four sustainability dimensions and thirty-five indicators. The dimensions and indicators were obtained from a review of related literature and validated by experts. Using a questionnaire, the judgment of local experts (professionals working on the project, selected university professors, and members of the agricultural NGOs) was used to evaluate the dimensions and indicators qualitatively. Data analysis was done using the Intelligent Decision System and Expert Choice software tools. The utility interval-based evidential reasoning ranking technique was used to rank the wastewater treatment options with and without ignorance as follows: constructed wetlands > sand filters > bio-towers > activated sludge. Constructed wetlands ranked as the most sustainable alternative, with a minimum utility of 0.7345. The environmental dimension, with a relative weighting of 60.4%, was the dimension with the greatest influence on ranking the secondary wastewater treatment alternatives.

With a term now entered into common language, the historical period we are experiencing is defined as "Anthropocene", to underline the serious responsibility of human activities for the global impacts produced and for the quality of life on our planet. At the same time, we are in an era of transition, characterized by a necessary transformation of society, which, starting from the current economic model, based on the logic of consumption of resources, production of waste and pollution and energy dependence from fossil fuels, we are moving towards a new, more sustainable future characterized by the search for solutions to multiple environmental criticalities and strategies for adapting to their now irreversible effects. Numerous examples of responsible citizenship and bottom up initiatives, such as student living labs, demonstrate the importance of active participation, a more aware knowledge of sustainability issues that lead to the adoption of effective initiatives on a local scale for the health of our cities.

La economía circular y la bioeconomía han resultado ser una alternativa a nivel mundial a los modelos de producción lineales y basados en combustibles fósiles y materias primas muchas veces no–renovables. Aunque en Centroamérica existen iniciativas de este tipo, principalmente en el sector bioenergético, se debe impulsar la aplicación de estos principios en sectores más amplios como la bio emediación, la fabricación de bio–fertilizantes e incluso de materiales de más alto valor como bio–polímeros y bio–cosméticos. De igual manera, la preservación de la biodiversidad debe ser un objetivo común centroamericano, aunado a esto, se debe añadir el efecto sinérgico entre los países centroamericanos, en donde el SICA puede jugar un rol institucional neutro, más no pasivo, de coordinación y articulación entre los países. La migración hacia una economía bio–basada y circular con enfoque ambientalmente sostenible es viable en la región considerando las tecnologías actuales y el potencial de biodiversidad de Centroamérica.

In response to the important environmental impacts produced by the road transport network during all its life cycle stages, a set of measurements to include sustainable principles have been identified between 1997–2021, analysed and mapped by applying SciMAT and VOSviewer. The results have shown the predominance of issues which analyse the life cycle assessment of road infrastructures in its both environmental and economic dimension as a way to mitigate their effects on climate change, including the reduction of resources and energy consumption, or of energy consumption and greenhouse gases emissions during the construction and operation stages, respectively. However, the incorporation of the social life cycle assessment dimension, their adaptation to climate change, and the use of smart roads are still in an early stage. Therefore, efforts to include these issues are necessary to address their design according to the resilience concept and ensuring a cleaner and more competitive and climate-neutral Europe.

A study on water/energy balances at the household scale is performed using Life Cycle Assessment (LCA) to estimate Greenhouse Gas (GHG) emissions and impacts resulting from multiple scenarios incorporating various options for: (i) component sizing, (ii) energy usage, and (iii) water reuse. Sustainability indicators are evaluated to select feasible options, while reducing whole life cycle GHG emissions. Water reuse schemes using rainwater are strongly dependent on rainfall availability and require significant tank volumes. Schemes using only gray water are more compact but more energy for treatment is needed before usage. Schemes obtained by combining both options perform better in terms of reliability and sustainability.

The level of One Health (OH), or “One Health-ness,” of health interventions has been defined as the capacity to operate according to six dimensions concerning OH operations and OH infrastructures, respectively (thinking, planning, and working; and information sharing, reciprocal learning, and systemic organization). Although health initiatives and research increasingly claim their orientation toward OH, such a capacity is rarely assessed. The objective of this study is to evaluate the One Health-ness of the academic team of the University of Bologna (UNIBO Team) working in the “ELEPHANT” project (Empowering universities' Learning and rEsearch caPacities in the one Health Approach for the maNagement of animals at the wildlife, livestock and human interface in SouTh Africa). This project involves universities, six from South Africa and two from Europe, and aims at embedding OH in research and learning to enable the control of diseases at the human, animal, and environmental interface, and to emphasize the interests of local African communities with wildlife conservation. The methodology adopts the NEOH method, developed in 2018 by the EU-COST Action, “Network for the Evaluation of One Health.” The approach is based on questionnaires delivered to participants, which focus on the six OH dimensions, and then translate answers into quantitative metrics through the OH Index (OHI) and the OH Ratio (OHR). The following two evaluation levels are foreseen: the whole project and the single partner institutions. The evaluations are carried on in parallel, with preliminary, mid-term, and final assessments, to monitor the efficacy of the project actions. The preliminary evaluation of the UNIBO Team resulted in the OHI of 0.23 and the OHR of 1.69 which indicate a low degree of OH-ness and an imbalance between OH operation and OH infrastructure. The UNIBO case study will be the baseline for the evaluation of the other partner institutions involved in the ELEPHANT project. This type of evaluation can support the implementation of OH practices inside a project and underpin the strategies that allow to achieving more effective results. Any improvement in the OH-ness of each single academic team can be also considered as a result of the ELEPHANT project, thus showing its multiplier effect in the context.

The concept of sustainability in the road construction sector is a complex issue because of the various steps that contribute to the production and release of greenhouse gas (GHG) emissions. Addressing this issue, the European Commission has put various policy initiatives in place to encourage the construction industry to adopt circular economy (CE) and industrial symbiosis (IS) principles e.g., the use of recycled materials. Cooperativa Trasporti Imola (CTI), a company located in the Emilia-Romagna region (Italy), has been chosen for the current case study to examine practices, management, and the industrial symbiosis network among various companies in the road construction and rehabilitation sector. In this regard, the use of steel slags, obtained by an electric arc furnace (EAF), and reclaimed asphalt pavement (RAP), obtained by the deconstruction and milling of old asphalt pavement have been investigated. Two mixtures of recycled hot Mix Asphalt (HMA) i) were prepared incorporating different recycled material percentages for the wearing and binder course, respectively, ii) were characterized in terms of size distribution, strength modulus and volumetric properties, iii) and finally were compared to the performances of two mixtures entirely designed by virgin materials for the wearing and binder course, respectively. Therefore, the Life Cycle Assessment (LCA) tool was chosen to evaluate the environmental impacts that affect the designed road life cycle. The results show that recycling RAP and EAF slags in a CTI batch plant provides benefits by reducing the consumption of virgin bitumen and aggregates and by reducing CO2eq emissions. Finally, practical implications on the use of recycled materials in new asphalt mixtures from a life cycle and industrial symbiosis perspective are provided.

In this study, empty palm fruit bunch fibre was used for solids-liquid separation of palm oil mill wastewater and the sludge was sun-dried for potential uses as soil conditioner or solid fuel. The fibre was manually compressed into a wooden mould to obtain a fibre bulk density of 70 ​kg/m3. A composite wastewater sample was poured evenly over the surface of the fibre. The wet solids were sun-dried for 14 days to achieve a moisture content of 99% solids and up to 65% COD removal. Analysis of the dried sludge showed nutrients content (% of dry weight) of 0.84 for total nitrogen, 0.15 for phosphorus and 0.49 for potassium. The mean calorific value of the dried sludge was 17.1 ​MJ/kg. The results show the potential of sun-dried palm oil mill wastewater sludge for use as sustainable soil conditioner or solid fuel. The effluent from the solids-liquid separation must be given additional treatment as it may still contain harmful constituents.

European Commission is strongly committed into issues related to plastic materials production and plastic waste management. While the Circular Economy Package has set targets generally referred to recycling rates, the European Strategy for plastics in a circular economy (and related action plan), fosters sustainability along the entire plastic value chain: from primary producers to converters, brand owners and retailers to waste collectors and recyclers. The Directive on the reduction of the impact of certain plastic products on the environment (more commonly known as Directive on Single-Use-Plastics, waiting for publication in the Official Journal of the European Union) rules targets on ten plastic products most often found as littering on global beaches, directly affecting plastic industry and, consequently, market. Policy makers and industrial stakeholders are called upon to collaborate. The article aims to illustrate interactions between European Commission and all plastic value chain stakeholders on implementing measures to reach ambitious targets pursued by the recent European policy. The study shows how European Commission has robustly worked to regulate production and consumption patterns on plastic carrier bags and packaging (including food packaging) thus facilitating the achievement of specific targets provided by the recent Directive. However, additional provisions concerning market restriction have been introduced; industrial stakeholders carried on a prompt response by promoting the creation of alliances, join venture and association, as well as a more integrated plastic value chain. On the base of this purpose, a virtuous example of a closed supply chain is presented.

Indoor air quality (IAQ) management in public spaces is assuming a remarkable importance. Busy environments, like airport terminals, are currently regarded as possible hotspots and IAQ is a crucial element for passengers and staff protection, as well as a key aspect of airport passenger experience. A one-month monitoring period has been performed on IAQ in the airport of Bologna (Italy), as prototypal example of large regional airport. Four strategic areas within the airport have been equipped with electronic monitoring platforms, including different contaminants and two microclimatic sensors. Data suggest that daily variation in IAQ parameters typically follow the activity pattern of the different environments under study (i.e., passengers’ flows) for gaseous contaminants, where particulate matter counts oscillate in a definite range, with a significant role played by ventilation system. Gaseous contaminants show a correlation between indoor and outdoor concentrations, mainly due to airside activities. Micro-climatic comfort parameters have been tested to match with standards for commercial environments. As results appears in line with typical households IAQ values, the current air ventilation system appears to be adequate. Nevertheless, an integrated air management system, based on real-time monitoring, would lead to optimization and improvement in environmental and economical sustainability.

Construction and demolition wastes (C&DW) are usually recognized as not dangerous, but their accumulation can generate serious environmental problems. In spite of C&DW high potential to be reused/recycled, the practical procedures need to be assessed in terms of environmental consequences. The objective of this study is to quantify the environmental impacts of C&DW recycling/reuse, specifically in the production of aggregate 0/30 mm, comparative to those generated during the natural inert processing, in terms of global impacts addressing the whole process and for each technological phase. The analysis was carried out using Life Cycle Assessment methodology, assisted by SimaPro software, and based on primary data collected directly from the Italian Emilia Romagna region. Three methods were used for impact quantification: Eco-Indicator 99, EDIP/UMIP and Cumulative Energy Demand. The analysis revealed that the environmental impacts generated by C&DW recycling/reuse accounting for about 40% of the impacts induced by natural inert processing.

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Purpose - The research has the following objectives: to contribute to a clear understanding of the present social commitment of small and medium-sized enterprises (SMEs), analyzing the characteristics of CSR in them; making it easier to identify, develop and spread the instruments suitable to the SME specific demands in the creation of social value. Design/methodology/approach - Surveys a set of SMEs, belonging to different industrial fields and operating on the Italian territory in the region Emilia Romagna. Findings - On the basis of the analysis carried out in the paper, it has been possible to identify the principal managerial instruments used by the companies for the creation of social value and to identify those companies (approximately 63 percent of the reference sample) that adopt an integrated social responsibility approach. The majority of SMEs analysed have therefore perceived the social responsibility concept and welcome it, not only because they have moral or ethical reasons for doing so, but also because they maintain that this contributes to the growth of the company's own value. Practical implications - As there is no integrated approach, there exists no model in the literature that summarises the expectations of the stakeholders and the associated categories of value for these expectations. The "grid of values" developed in the present study constitutes a first level of such a model and a useful reference for the development of future research. Originality/value - In the opinion of the authors, two aspects characterize the contribution of the present research methodology: the integrated approach towards all the interlocutors; and the analysis and development of "value classes" to measure the creation of social value. [ABSTRACT FROM AUTHOR]