Life Cycle Sustainability Assessment Research Articles

DEALA — A novel economic life cycle impact assessment method for differentiated economic assessments in the context of life cycle sustainability assessments

DEALA — A novel economic life cycle impact assessment method for differentiated economic assessments in the context of life cycle sustainability assessments

Enhancing environmental, social, and governance, performance and reporting through integration of life cycle sustainability assessment framework

AbstractWe introduce an innovative framework integrating Life Cycle Sustainability Assessment (LCSA) impact categories with Environmental, Social, and Governance (ESG) factors, offering a unified approach for ESG assessment and reporting. It covers sustainable development's key aspects, enabling a detailed evaluation of environmental, economic, and social performance across product and system life cycles, in line with the Sustainable Development Goals (SDGs). Incorporating the UN's 10 principles, the framework fosters a synergy to improve ESG reporting, adaptable across industries. To demonstrate its practicality, a theoretical application in Canada's oil and gas sector highlights how this framework can provide actionable insights for SDG‐aligned performance improvements. This example illustrates how the framework can identify and address sustainability issues, thereby improving ESG performance. Beyond its theoretical contributions, the framework serves as a valuable tool for practitioners and investors, promoting informed and comprehensive ESG reporting. Ultimately, it aims to enhance organizations' contributions towards achieving the SDGs and advancing global sustainability.

Improving the decision-making for sustainable demolition waste management by combining a BIM-based life cycle sustainability assessment framework and hybrid MCDA approach.

Increasing efforts have been devoted to promoting sustainable demolition waste management (DWM) from a life cycle-thinking perspective. To this end, facilitating sustainability-oriented decision-making for DWM planning requires a sustainability assessment framework for assessing multifaceted criteria. This study develops a building information modelling (BIM)-based DWM sustainability assessment approach to facilitate the life cycle assessment (LCA) and decision-making by coupling the enriched Industry Foundation Classes model with hybrid multi-criteria decision-aiding (MCDA) methods using Dynamo visual scripting. To streamline the data-intensive LCA process, this study enriched the BIM properties and accommodated them into the LCA data template to enhance data interoperability, thus achieving seamless data transfer. Moreover, hybrid MCDA methods are integrated into the decision-making workflow for DWM scenario ranking. A pilot study is employed to verify the applicability of the decision-aiding framework. The results unveil that the sustainability score ascended with the recycling rate. The optimal DWM alternative with the highest recycling rate yields the highest sustainability score at 91.63. Conversely, a DWM alternative reflecting the 'status quo' in China's recycling industry has the lowest score at 8.37, significantly lower than the baseline scenario with a 50% recycling rate. It is worth noting that the 'growth curve' of the sustainability score continuously flattens as the target recycling rate escalates. The increment in recycling rate from the 'Australian standard' scenario to the optimal scenario is 18.4%, whereas the sustainability score merely increases by 2.3%, signalling that the former scenario arrived at an optimum point for maximising the cost-efficiency of DWM under the predefined framework and contexts.

Life cycle sustainability assessment of microbial oil from organic waste

Microbial oils (MOs) are lipids produced by oleaginous microorganisms, which constitute an alternative to vegetable and fossil-derived oils. They can be produced from organic waste by coupling acidogenic fermentation (AF) with oleaginous fermentation (OF). This study addresses a life cycle sustainability assessment (LCSA) of MO produced from the organic fraction of municipal solid waste. First, a system was modelled using simulation tools. This model combines AF for the production of volatile fatty acids from organic waste, OF for the production of lipid-rich yeasts, and MO extraction. LCSA results indicate the need for improvements in the disruption of yeasts and the overall efficiency of the system. Particularly, slightly acidified thermolysis turned out to involve excessively high steam requirements. An enhanced sustainability performance could be achieved by exploring alternative disruption methods or alternative sources of energy for the production of steam such as biogas from the valorisation of the sludges produced in the system.

Supporting sustainability assessment of building element materials using a BIM-plug-in for multi-criteria decision-making

The environmental crisis requires the immediate implementation of accurate and robust sustainable solutions throughout the building life cycle. Life Cycle Sustainability Assessment (LCSA) is a scientifically recognised method that integrates the triple dimensions of the life cycle approach, and thereby enabling the evaluation of the performance of mitigation strategies implemented in building projects. However, implementing the LCSA in buildings is limited by the weighting of environmental, economic, and social dimensions to select the best option regarding the numerous materials available. In order to fill this knowledge gap, the paper aims to present the developed Smart BIM3LCA tool, which supports multi-dimensional assessment during the project´s early design steps. Automatic integration of the LCSA, a multi-criteria decision-making tool such as TOPSIS, and building information modelling (BIM), was developed to support the selection of building materials. The BIM plug-in was then validated through its application to a multi-family residential building to select the most sustainable materials during the project´s early design stage.

Sustainability assessment of products of the tropical tree moringa in Ghana with a focus on small-scale producers

With their numerous products and uses, multifunctional crops offer an attractive means for improving smallholder farmer livelihoods. This study applies a Life Cycle Sustainability Assessment (LCSA) to Moringa oleifera (moringa), a multifunctional crop with diverse applications in nutrition, cosmetics, and water treatment. The LCSA includes an Environmental Life Cycle Assessment (ELCA), Social Life Cycle Assessment (SLCA), and Life Cycle Costing (LCC). Surveys were conducted with 58 smallholder farmers and five moringa processors in Ghana. The ReCiPe 2016 Midpoint method was used for the ELCA. The 10-year Net Present Value (NPV) and Payback Period (PBP) were calculated for farmers and processors in the LCC. The SLCA focused on the Worker stakeholder category, particularly smallholder farmer impacts, including indicators for Next Generation Farming, Inclusiveness, Access to Services, Food Security, and Livelihood. A composite sustainability score was calculated from the ELCA, SLCA, and LCC results using the Characteristic Objects Method (COMET), a multi-criteria decision analysis method resistant to rank-reversal. The study compared five supply chains: leaf-only, leaf-and-seed, leaf-and-seed with seedcake reuse, seed-only, and seed-only with seedcake reuse. Environmental hotspots were identified in leaf and seed collection. Economically, leaf-only cultivation provided the highest 10-year NPV for farmers, while seed-only with seedcake reuse yielded the highest NPV for processors. The leaf-only supply chain had the best PBP for both farmers and processors. Socially, leaf-only cultivators outperformed reference points across all indicators, making it the most socially sustainable supply chain. Our findings highlight that improving market access, organizing seed cultivators into farmer-based groups, and optimizing farm gate product collection can enhance the sustainability of moringa supply chains, offering a model for other multifunctional crops in rural development. This study is the first to integrate LCSA with COMET, a promising approach that could be adopted in other sustainability assessment case studies.

Monetization of Sustainability Indicators Integrating Willingness to Pay into Life Cycle Sustainability Assessment

Monetization of Sustainability Indicators Integrating Willingness to Pay into Life Cycle Sustainability Assessment

Life cycle sustainability assessments of critical civil infrastructure systems: additional guidance for future research and practical application

ABSTRACT Sustainable development of critical civil infrastructure systems should include economic, environmental, and social considerations, as well as considerations that are of high value to stakeholders and decision-makers. Life cycle economic and environmental impacts of critical civil infrastructure systems are commonly quantified by well-established methodologies such as life cycle assessment and life cycle costing. However, social and other related impacts of critical civil infrastructure systems can be difficult to quantify and are therefore less commonly and thoroughly addressed. A mini-literature review was conducted to explore how sustainability is currently evaluated for critical civil infrastructure systems. The review found that, while there are life cycle assessment frameworks available, there is vague guidance available for addressing factors that are not directly related to environmental, economic, or social (i.e., difficult to quantify) impacts. In response, the authors build upon currently available methodologies by discussing a supplemental approach for collecting additional data for critical civil infrastructure systems, which includes the use of stakeholder discussions and semistructured interviews. Including a range of factors early on in life cycle sustainability assessments of critical civil infrastructure can improve study robustness and allow for further integration of decision-making factors in life cycle sustainability assessments.

Social life cycle sustainability assessment of dried tomato products based on material and process selection through multi-criteria decision making.

Tomatoes are a significant product of the Mediterranean region and a crucial component of the Mediterranean diet. The formulation of dried tomato products enriched with proteins and bioactive compounds could be a strategic approach to promote adherence to the Mediterranean diet. Six different novel tomato products were analyzed using different protein enrichment sources (pea proteins and leaf proteins) and drying technologies (hot-air dryer, microwave vacuum dryer, and conventional dryer). The novelty of this approach lies in combining product-specific criteria with global societal factors across their life cycles. Using 21 criteria and an analytic hierarchy process (AHP) survey of experts, the social sustainability score for each product was determined through a multi-criteria assessment. The tomato product's life cycles have minimal regional impacts on unemployment, access to drinking water, sanitation, or excessive working hours. However, they affect discrimination, migrant labor, children's education, and access to hospital beds significantly. The study identified nutritional quality as the top criterion, with the most sustainable design being a tomato bar enriched with pea protein and processed using microwave vacuum drying. The study revealed that integrating sensory and nutrient compounds into social sustainability assessments improves food sustainability and provides a practical roadmap for social life cycle assessments of food products. It emphasized the importance of considering global social issues when reformulating Mediterranean products to ensure long-term adherence to the Mediterranean diet. Incorporating social factors into sustainability scores can also enhance the effectiveness of product information for conscious customers. © 2024 The Author(s). Journal of the Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Systematic Literature Review on the Application of the Life Cycle Sustainability Assessment in Agricultural Production

Systematic Literature Review on the Application of the Life Cycle Sustainability Assessment in Agricultural Production

A systematic literature review of life cycle sustainability assessment of mass timber in the construction industry toward circular economy

AbstractLife cycle analysis has been used to evaluate the environmental impacts and economic costs of a range of engineered timber structural materials as well as other materials such as steel and concrete over the last two decades. This study presents a bibliometric analysis and systematic critical review by investigating the life cycle sustainability assessment (LCSA) of engineered timber products. LCSA is comprised of three main pillars namely, environment, cost, and social impact. The study compares alternative engineering wood products used in building structures such as columns, beams and wall surfaces. The geographical distribution, main sources of research, co-occurrence of keywords were analyzed for 93 peer-reviewed articles and conferences. The United States was the most productive country, contributing almost 23 documents. Australia was next with 12 publications. Most studies compared the LCA and LCC of alternative Mass timber products and concrete or steel. Most studies evaluated cross laminated timber (62%), followed by glued laminated timber (17%), and laminated veneer lumber (9%). A comparison of the economic and environmental aspects indicated that the social aspect are less considered. The review showed that the global warming potential of manufactring1 M3 of cross laminated timber is about 155.6–158.6 kg CO2eq. The majority of the publications reviewed focused on LCA whilst others focussed on the LCC of Mass timber. No research on social life cycle assessment has been conducted as yet. A framework is suggested for future research to identify the best alternative for engineering wood.

A simulation-based techno-economic-safety-social-environmental decision-making framework for prioritizing plastic waste treatment processes

Chemical recycling technologies hold promising potential in converting mixed plastic waste into energy and chemicals. This study proposed a simulation-based quantitative life cycle sustainability assessment framework for the potential plastic waste valorization processes. Sustainability metrics including environment, economy, safety, society, and energy were quantified and comprehensively investigated. Based on the Bayesian best-worst weighting and vector-based ranking methods, the normalized and weighted life cycle sustainability scores were used to prioritize the best process. Gasification-based technology was found superior than incineration-based technology, especially in the economic, techno-energetic, and social aspects. However, incinerated-based process with direct CO2 emissions performed better in the environmental aspects compared with the process integrating with carbon capture and utilization unit. Additional environmental burdens were brought to the system when incorporating the carbon capture and methanol synthesis process. Increased system complexity might bring unexpected environmental burdens, and sometimes even outweighed the benefits. Various weights were assigned to the multi-criteria decision-making model, and the gasification-based process consistently ranked first across all scenarios.

Assessment of short-term supply disruption impacts for the Swiss mobility, energy and ICT sectors – Application of the SPOTTER approach

In this paper, supply disruption impacts along supply chains within the Swiss mobility, energy and ICT sectors are assessed in the short-term (i.e. the next 5 years) using the recently developed SPOTTER approach with the objective to identify hotspots and technologies associated with comparably low supply risks. SPOTTER has been chosen because, compared to other approaches, it is the only one that allows for an assessment along the full supply chain and it is integrated into the Life Cycle Sustainability Assessment framework. To decrease the respective data acquisition efforts for the here-performed supply risk analysis of entire sectors, in a first step, material/product flows that are most influential for an assessment with SPOTTER are identified and considered for the calculation of related impact scores. Our study analyzes critical material and product flows between trade partner countries along relevant supply chains. It thus identifies new hotspots and adds relevant country-specific information to current knowledge. In particular, the identified hotspots refer to volatile prices of solar panels, interrupted trade of oil and gas from Russia, Nigeria and Niger as well as disrupted imports of electronic devices from China. Suggestions for mitigation strategies comprise hedging and/or diversifying the supply chains. Other identified hotspots refer to the critical supply of cobalt and natural graphite along battery supply chains, which could for example be addressed by supporting and/or incentivizing the construction of a circular economy. A third category of identified hotspots indicates risks related to the trade of hafnium and nuclear power plant equipment that could be mitigated by shifting to less risky energy technologies. Our comparisons of overall impacts between relevant technologies suggest higher supply risks for conventional cars, solar panels and Chinese laptops compared to battery electric cars, wind turbines and German laptops. In these comparisons, more details regarding disruptions along full product and fuel supply chains are considered than in current studies.

Sectorial Investigation of Life Cycle Sustainability Assessment in the Context of Case Studies

The emergence of the concept of sustainability has brought with it the challenge of measuring this concept. Over the years, methods have been developed to assess the environmental impacts of sustainability using Life Cycle Assessment (LCA), evaluate its economic impacts through Life Cycle Costing (LCC), and analyze its social impacts with Social Life Cycle Assessment (S-LCA). Life Cycle Sustainability Assessment (LCSA) aims to obtain more holistic and comprehensive results by considering these three dimensions of sustainability together. This study examines the place of the LCSA approach in the literature and its application in different sectors. Case studies from various sectors and the other methods used in these processes were analyzed. The findings indicate that the construction and energy sectors have the most case studies using the LCSA method, while product design lags behind. Evaluating the sustainability of products before mass production is crucial for sustainable product design. Therefore, increasing the use of LCSA in product design is considered a significant step toward achieving sustainability goals.

Life cycle sustainability assessment of kerbside glass recycling: Separate vs. mixed bin collection and its reuse in asphalt and glass container production

This paper pilots a Life Cycle Sustainability Assessment (LCSA) to scrutinize the sustainability performance of kerbside waste glass recycling alternatives in a local municipality, where three major innovations are underlined. First, the study utilizes the LCSA method to evaluate the sustainability impact of street collection methods on waste glass recycling, which examines both open-loop and closed-loop recycling processes. Second, the study overcomes a common difficulty in sustainability assessment, where environmental and economic impacts are more accessible to quantify, but social impact often lacks a clear functional unit for assessment. This research addressed this gap, ensuring a holistic evaluation. Third, the study introduces an innovative way to visualize the findings from the LCSA. This visualization technique makes the results easily understandable to all stakeholders, enhancing the comprehensibility of multifaceted data. Two street collection methods (separate and mixed bin collection) are combined with two production methods (asphalt and glass container) to form four kerbside waste glass recycling scenarios. It also employs two functional units, weights of annually collected glass waste and 1 ton of produced asphalt or glass container, to demonstrate the LCSA-generated results under different perspectives. Evaluating the annual waste glass collection in the mixed bins implies better environmental, economic, and social outcomes than separate bins. In 1 ton of products, asphalt production is more sustainable environmentally and economically than glass container production. Separate bins enhance glass container production's environmental and economic sustainability by greater than 80%, but they have a minimal 5–6% improvement on asphalt production. A similar trend in social sustainability is indicated for asphalt and glass container production. However, a significant decline in social sustainability is observed when transitioning to separate bins from mixed bins methods. Sensitivity and uncertainty analyses show that a 50% increase in transportation distance results in minor impacts: CO2 emissions increase by 7% for separate bin-asphalt and 4% for mixed bin-asphalt, and by 0.8% for separate bin-glass container and 0.7% for mixed bin-glass container. Equipment costs also increase slightly: 3.6% for separate bin-asphalt, 4.7% for mixed bin-asphalt, 3.4% for separate bin-glass containers, and 1% for mixed bin-glass containers. These results underscore the robustness of the LCSA findings.

Systematic Review of Construction Waste Management Scenarios: Informing Life Cycle Sustainability Analysis

Abstract Purpose Construction and demolition waste (CDW) is increasing due to rapid urbanization. An estimated 35% of CDW is disposed of in landfills worldwide. Thus all available strategies for minimizing the environmental and economic impacts of CDW are explored. This study reviews the use of recycled construction and demolition waste as substitutes for primary materials as well as strategies for the reuse of materials that lead to the circular economy. The aim of this study is to analyse previous literature on CDW that use life cycle analysis and contribute to the circular economy. Methodology A bibliometric analysis and systematic critical review is presented to investigate the contribution of construction materials to life cycle sustainability assessment (LCSA). The Scopus database was the main source of data reviewed. The geographical distribution, main research sources, and keywords co-occurrence were analyzed for 69 peer-reviewed articles and conference papers. Findings Most studies compared the life cycle assessment (LCA) and life cycle cost (LCC) of alternative concrete recycling methods or using waste instead of aggregates in concrete. Recycling or reuse of concrete, bricks, wood, gypsum, and steel are the most common materials studied in previous research. A knowledge gap is proposed for future research. Originality The knowledge gaps identified focus on wood waste and concrete. Currently it is not clear which of the options proposed is the most sustainable.

Sustainability Assessment Methods for the Transport Sector Considering the Life Cycle Concept—A Review

This paper presents a summary and review of life cycle sustainability assessment (LCSA) methods for the transport sector. The paper provides a comprehensive overview of articles that employ a variety of methods for assessing sustainable development in the transport sector, taking into account the economic, social, and environmental dimensions. In the sustainability assessment of transport, three methods were evaluated: life cycle assessment (LCA), life cycle cost analysis (LCC), and social life cycle assessment (SLCA). An overview of sustainability assessment methods in transport and a review of the indicators used in the life cycle sustainability assessment was conducted. It was found that the selection of indicators within the LCSA for assessing various aspects of sustainable development is dependent on various geographic and policy contexts. An overview of the application of multi-criteria decision analysis (MCDA) methods to assess LCSA in the transport sector was performed. MCDA methods are used to support decision-making regarding the selection of the most sustainable transport options and allow for the simultaneous consideration of multiple criteria, enabling a more sustainable assessment of different transport options. MCDA methods help to rank alternative transportation fuels and help decision-makers consider indicators encompassing economic, environmental and social aspects.

Life Cycle Sustainability Assessment: An Index System for Building Energy Retrofit Projects

As a major contributor to global energy consumption and greenhouse gas emissions, the building sector is crucial in shaping energy and climate change policies. Understanding building energy consumption is essential for developing effective policies, and comprehensive datasets and analyses are increasingly important. This paper outlines a structured methodology for developing a sustainability assessment index for building energy efficiency retrofits throughout a building’s life cycle, covering the design, construction, use, and out-of-use phases. It highlights the interdependencies among these phases, with the design plan influencing energy efficiency and material selection, the construction plan ensuring these goals are met, and the plans for energy management, demolition, and resource recovery focusing on sustainable practices. The keys to energy-efficient retrofits are sustainable materials, energy-efficient equipment, and green technologies, which help reduce energy consumption, emissions, and operating costs. Oversight and regulation are necessary to maintain standards. This research combines a literature review, surveys, interviews, the Delphi method, and an analytic hierarchy process (AHP) to develop a comprehensive evaluation system, categorizing 20 factors across a building’s life cycle and assigning weights based on environmental, economic, and social dimensions. The system provides a scientific basis for assessing the sustainability of energy efficiency programs, validated through consistency testing.

Improving the Decision-Making for Sustainable Demolition Waste Management by Combining a Building Information Modelling-Based Life Cycle Sustainability Assessment Framework and Hybrid Multi-Criteria Decision-Aiding Approach

Increasing efforts have been devoted to promoting sustainable demolition waste management (DWM) from a life cycle thinking perspective. To this end, facilitating sustainability-oriented decision-making for DWM planning requires a sustainability assessment framework for assessing the trade-offs among multifaceted criteria. This study develops a BIM-based DWM sustainability assessment approach to facilitate the life cycle sustainability assessment (LCSA) and decision-making by integrating LCSA-related properties and hybrid Multi-Criteria Decision-Aiding (MCDA) methods into a BIM environment using Dynamo visual scripting. A dynamic linkage is developed in the streamlined BIM-based LCSA process, where the enriched Industry Foundation Class (IFC) models are coupled with custom LCSA data templates to achieve seamless data exchange between the BIM platform and external LCA tools. Subsequently, hybrid MCDA methods convert the assessment results into DWM scenario ranking. A pilot study verifies the applicability of the BIM-based framework. The results unveil that the sustainability score ascended with the recycling rate. The optimal DWM alternative with the highest recycling rate yields the highest sustainability score at 91.63. Conversely, a DWM alternative reflecting the ‘status quo’ in China’s recycling industry has the lowest score at 8.37, significantly lower than the baseline scenario with a 50% recycling rate. It is worth noting that the ‘growth curve’ of the sustainability score continuously flattens as the target recycling rate escalates. The increment in recycling rate from the “Australian standard” scenario to the optimal scenario is 18.4%, whereas the sustainability score merely increases by 2.3%, implying that the former scenario arrived at an optimum point for maximising the cost-efficiency of DWM under the predefined settings.

Assessing the circularity and sustainability of circular carpets — a demonstration of circular life cycle sustainability assessment

Abstract Purpose Robust assessments are needed to identify the best circular economy (CE) approaches related to their contribution to achieving a CE by simultaneously considering the complexity of the three pillars of sustainability (environmental, economic, social). In this regard, the circular life cycle sustainability assessment (C-LCSA) framework was recently developed. This study aimed to demonstrate its applicability and capability of identifying trade-offs and interlinkages between the different dimensions using a case study of different CE approaches to carpet tiles. Methods C-LCSA integrates circularity and life cycle sustainability assessments (LCSA). Thus, this study applied the material circularity indicator (MCI) in parallel to life cycle assessment (LCA), life cycle costing (LCC), and social life cycle assessment (S-LCA). The last technique was applied as social hotspot assessment. Five CE approaches of carpet tiles produced in the US, including strategies like reducing the consumption of primary materials through recycled and bio-based feedstock or replacing carpet tiles for a longer overall service life, as well as recycling, were assessed and compared to their mainly linear counterpart. Results and discussion The study revealed that recycling carpet tiles containing recycled and bio-based materials at the end-of-life (EoL) resulted in the lowest global warming potential (8.47 kg CO2 eq.) and the highest circularity (MCI value of 0.76, with 1 indicating the maximum level of circularity) compared to the other scenarios. However, this scenario had a trade-off with a higher acidification potential (0.039 kg SO2 eq.) and higher costs (US$19.98) compared to the disposal scenario. On the other hand, the scenario using primary, non-bio-based materials in production and disposing of the carpet tiles at their EoL performed the worst in circularity (MCI value of 0.11) and implied high environmental impacts while being more cost-effective (US$10.27). Conclusions C-LCSA transparently revealed interlinkages in terms of circularity and the overall sustainability performance of different CE approaches. While no significant differences in terms of social hotspots were identified, approaches associated with a higher circularity and improved environmental performance in most impact categories tended to result in higher costs. This emphasized the need for individual and holistic assessments of the new CE approach to identify and address trade-offs. To enhance and foster C-LCSA in academia and industry, further studies applying the framework to different sectors are encouraged.