Reducing the environmental impact of the end-of-life of buildings depending on interrelated demolition strategies, transport distances and disposal scenarios

Journal of Building Engineering, Journal Year: 2023, Volume and Issue: 82, P. 108197 - 108197

Published: Nov. 25, 2023

Construction and demolition waste (CDW) represents a high environmental impact. This is strongly related to the chosen alternatives for disposal of these waste. In this paper, different strategies are analysed in order achieve most eco-friendly path treatment CDW, promote both reduction impact implementation circular economy construction sector. For each defined strategy type considered determined, using Life Cycle Assessment (LCA) approach determine indicators climate change (GWP) abiotic depletion potential fossil resources (ADP f.f.). Ten considered, which combine: two types (traditional selective); options valorisation and; local or external treatment. Two case studies herein considered. Due influence transport on determination impact, separately analysed. The obtained results demonstrate benefit maximizing promoting selective demolition, as well distance those decisions.

Language: Английский

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Life cycle assessment of protein extraction from microalgae biomass using ohmic heating

Algal Research, Journal Year: 2025, Volume and Issue: unknown, P. 103962 - 103962

Published: Feb. 1, 2025

Language: Английский

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Theories, techniques and strategies of sustainable circular economy: a systematic literature review

Discover Sustainability, Journal Year: 2025, Volume and Issue: 6(1)

Published: April 17, 2025

Language: Английский

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Environmental impacts of circularity in the built environment: How do system boundaries affect decision support?

Developments in the Built Environment, Journal Year: 2024, Volume and Issue: 18, P. 100398 - 100398

Published: March 15, 2024

Life-Cycle Assessments (LCA) have become a common tool of decision support in the built environment regarding environmental impacts. The goal this study is to investigate influence different LCA approaches and system boundaries on circular design strategies. Three ways applying attributional (ALCA) one consequential (CLCA) are assessed using case wooden beam with either virgin or reclaimed timber. While conclusions not readily scalable, study's results indicate that material environmentally beneficial when ALCA. However, CLCA performs worse than material. This highlights potential pitfalls scaling up solutions based without considering broader consequences. current ALCA approach useful for declarations, it may provide comprehensive driving transition environment.

Language: Английский

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Circular Bioeconomy in the Amazon Rainforest: Evaluation of Açaí Seed Ash as a Regional Solution for Partial Cement Replacement

Sustainability, Journal Year: 2022, Volume and Issue: 14(21), P. 14436 - 14436

Published: Nov. 3, 2022

Açaí seed ash (ASA) is a waste product from processing the açaí fruit and burning seeds for cogeneration purposes. The present study evaluated use of ASA Brazilian Amazon as partial Portland cement replacement in self-leveling mortars (SLM) social-interest buildings. fresh hardened state properties were accessed with 5% 10% content, life cycle assessment was performed to evaluate greenhouse gas (GHG) emissions. maximum transport distance enable building material determined by sensitivity analysis, specific carbon-efficiency indicators SLM proposed validated. results showed that using up technically environmentally feasible since mechanical performance maintained GHG emissions decreased 8%. analysis revealed efficiency crucial applications far its production area; therefore, it should be regional material. work brings an important contribution sustainable development assessing characteristics residual proposing reuse waste, reducing industry, stimulating circular bioeconomy region.

Language: Английский

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Ten questions concerning absolute sustainability in the built environment

Building and Environment, Journal Year: 2024, Volume and Issue: 251, P. 111220 - 111220

Published: Jan. 17, 2024

Concepts for setting carrying capacity-based benchmarking of life-cycle environmental impacts is an ongoing field research with emerging industrial uptake in the built environment. This paper a critical review this development compiled form 10 questions that discusses issues and challenges related to definitions, methodology, terminology, uncertainties. The intention not discourage but highlight need ensuring consensus alignment on aforementioned both within community when implementing concepts practice. Concluding AESA (Absolute Environmental Sustainability Assessment) aims address performance service, benchmarked against functional pollution space, using capacities, rather than comparing it current ‘best practice'. It crucial recognize these capacities are limits, targets, whilst allocation capacity services depends subjective political decision-making, uncertainties, including subjectivity scientific data, should be included communicated clearly credible AESAs. Collaboration between academia industry align definitions terminology avoid misalignments. While lacks scalable approach systemic assessments, serves as valuable steppingstone transition, highlighting achieving environment currently known spaces, requires policy changes cultural shift.

Language: Английский

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The lifecycle impact and value capture of circular business models in the built environment

Construction Management and Economics, Journal Year: 2023, Volume and Issue: 42(6), P. 527 - 544

Published: Nov. 16, 2023

Circular economy (CE) has been of utmost interest in the industry and research community preceding years. However, CE is still a nascent field built environment context. As technological advances within are slowing, incorporation business models into concept deemed important to achieve necessary transition. should take holistic perspective lifecycle optimization approach. The aim twofold, firstly, we contribute assessment impacts models. Secondly, establish how real estate development organizations can optimize value capture from adaptive reuse projects. We engage an in-depth mixed methods case study assessing comparing two adaptation scopes former textile factory offices. minor scope includes basic measures bring building up standard, whilst major same, with addition space efficiency measures, extended services, onsite energy production various circular activities. find that consequently captures more identified propositions organization than scope. conclude activities do not necessarily lead better environmental performance, however, may higher profit social gain. contributes existing knowledge impact assessments, highlights complexity balancing environmental, economic framework be used by developers prior investments decisions.

Language: Английский

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Adapting for shared use – evaluating the lifecycle carbon impact

IOP Conference Series Earth and Environmental Science, Journal Year: 2023, Volume and Issue: 1196(1), P. 012038 - 012038

Published: June 1, 2023

Abstract Vast amounts of resources extracted through the times are in today’s built environment, with only an estimated 20-30% building material recycled or reused and sector accounting for over 35% EU’s total waste generation. Buildings also responsible 25-40% all global carbon dioxide emissions. Circular Economy (CE) refers to better management by closing energy loops, as well minimizing that enters system begin with. In environment context, adaptive reuse reduces need new construction adapting existing buildings uses. Another way is use space more efficiently, e.g., co-location, sharing flexible workspaces which lead higher utilisation rates. This study will assess lifecycle impact project aims efficiency reconfiguring spaces upgrading increasing dimensions accessibility services. Three different analyses (LCAs) made using typical conservative data manually, one LCA tool, compare how choice method impacts results. The main sources within boundaries be explored, order understand relationship between phases project. results can form a baseline similar renovation projects include measures, this did terms spaces. Future research comparing minor scenario same building, where was not included. Less work would lower per m 2 , however necessarily person less people able utilise space.

Language: Английский

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Life Cycle Assessment of Plasterboard Production: A UK Case Study

Sustainability, Journal Year: 2024, Volume and Issue: 16(9), P. 3564 - 3564

Published: April 24, 2024

Plasterboard, which serves as a nonstructural building material, is widely employed for lightweight wall construction and surface finishing in walls ceilings. Amid mounting concerns regarding product sustainability the adoption of Net Zero strategies, evaluating environmental performance materials has become crucial. This study aims to conduct comprehensive life cycle assessment (LCA) gypsum plasterboard, aiming pinpoint areas potential improvement. The LCA methodology, adhering established guidelines considering midpoint impact categories, was quantify impacts across various stages plasterboard cycle—encompassing raw material extraction, manufacturing, transportation during all stages, end-of-life treatment waste. Primary data were sourced directly from manufacturer recycler supplemented with secondary obtained Environmental Product Declaration (EPD) Ecoinvent 3.9 database. Among identified human carcinogenic toxicity category emerged most affected category, primarily due supply stage, followed by freshwater ecotoxicity, impacted stage.

Language: Английский

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Circular Modality in Construction: an Interdisciplinary Review in Detecting Knowledge Gaps and Future Research Trajectories

Published: June 13, 2024

A general consensus is that the conventional linear modalities guarantee no industrial sustenance in long run for many obvious reasons. This where topicality of circularity has been accentuated last two decades or so socio-political arena. However, anecdotal evidence suggests emphasis given to construction industry relatively low. Tackling this issue essentially warrants a rigorous co-production integrated knowhow preferably beyond sectorial boundaries. The present study sheds light on interdisciplinary approaches taken deal with slowness transmuting into sector. comprehensive literature survey was undertaken understand phenomenon at policy, firm and site level. analysis included one hundred twenty-eight (128) articles published high impact journals between 2003 2024. Eighty seven (87) gaps terms theory, knowledge, practice, method, empiricism policy were observed. Forty four (44) thematic sub-clusters have potential empirical research. new framework finally proposed scaffold systemic transition towards circular On practical level, offer valuable insights instruments personnel gauge efficacy their own initiatives.

Language: Английский

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