Life cycle assessment of construction and demolition waste management in a large area of São Paulo State, Brazil

Rosado, Laís Peixoto; Vitale, Pierluca; Penteado, Carmenlucia Santos Giordano; Arena, Umberto

doi:10.1016/j.wasman.2019.01.011

Cited by 89 publications

(48 citation statements)

References 37 publications

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“…Data modelling was achieved with product sustainability software GaBi (database version 4.131 distributed by PE International) ( Stuttgart, 1992–2016 ), the environmental performance being evaluated through the calculation of eleven different impact categories using CML 2001 methodology and according to ISO 14040:2006 ( ISO, 2006 ). The characterization factors for CML 2001 are the most utilized for the considered impact categories, as reported elsewhere ( Chevalier et al, 2011 ; Rosado et al, 2019 ). The MSW sample for this case study was provided by an industrial partner, within the framework of a joint work towards the development of new strategies for the company.…”

Section: Methodsmentioning

confidence: 99%

Renewable energy from solid waste: life cycle analysis and social welfare

Ramos

Rouboa

2020

Environmental Impact Assessment Review

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In this study, municipal solid waste (MSW) composition in distinct world locations is compared and a case study is assessed. Three waste-to-energy (WtE) techniques are employed within the framework of an industrial partnership. Life cycle assessment (LCA) and a brief social contextualization including the production of renewable energy from the waste generated worldwide were held to attain a holistic view and attract the interest of multiple stakeholders. Incineration depicted a sustainable profile with improved results for global warming potential and terrestrial ecotoxicity potential. Regular gasification revealed the best results for eutrophication, acidification, marine aquatic ecotoxicity and human toxicity potential. Two-stage plasma gasification showed negative values for all impact categories i.e. achieving environmental credits. The estimate of the electricity produced from the waste generated per capita showed a fair coverage of the electrical demand in distinct world areas. To the best of the authors' knowledge, there are no reports connecting the electricity use, the waste production and the renewable energy achieved from WtE for different world regions. Therefore, this study supports the replacement of fossil fuels with renewable alternatives, reducing greenhouse gas emissions while maintaining the comfort and commodities suitable for a comfortable quality of life.

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Section: Methodsmentioning

confidence: 99%

Renewable energy from solid waste: life cycle analysis and social welfare

Ramos

Rouboa

2020

Environmental Impact Assessment Review

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“…This stage requires the use of a mathematical model to convert values for all types of emissions, energy, heat dissipation, noise, etc., into impact categories to provide essential information for a decision-making process. IMPACT 2002+, the methodology used for this study [36], is a recognized tool previously used in other studies [37,38]. It transposes the LCI results into 15 midpoint categories; after this it is possible, by reducing the complexity and at same time losing scientific information, to transform the data in four damage categories more suitable for a non-scientific public.…”

Section: Data Qualitymentioning

confidence: 99%

Cement-Matrix Composites Using CFRP Waste: A Circular Economy Perspective Using Industrial Symbiosis

et al. 2021

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This study aims to provide a mitigation strategy for reducing the economic and environmental impacts of carbon fiber wastes deriving from automotive industry. Recycling and reuse in the construction industry is proposed, according to an industrial symbiosis within a circular economy perspective. Specifically, the process consists of repurposing carbon fiber reinforced polymer (CFRP) scraps/waste into new cement-matrix composites, for which the resulting benefits, in terms of mechanical and environmental performance, are herein described. An experimental campaign, starting with a specific heat treatment of CFRP sheets and an accurate dimensional distribution analysis of the short carbon fibers, is presented. The influence of the fiber content and length on both the workability and the mechanical performance of cement-based carbon fiber reinforced mortars is also evaluated. A reduced amount of either sand or cement (up to 8% and 12.8% in volume, respectively) is also considered in the mix design of the fiber reinforced mortars and derives from the substitution of the sand or binder with an equivalent volume of CFRP fibers. The results show a satisfactory increase in compressive and flexural strength in the range 10–18% for the samples characterized by a volume fraction of fibers of approximately 4% and having a 2–5 mm length. Finally, a life cycle assessment (LCA, 14040/14044) was carried out to quantify the environmental burden reductions associated with the implementation of the proposed symbiotic scheme.

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“…The sunk cost fallacy [39], i.e., basing decisions on previous investments instead of future consequences, should be avoided by excluding embodied impacts not affected by the decision. Landfilling can contribute significantly to the LCIA results [10,16,[40][41][42] and is a potential significant issue for LCAs on mineral waste management [10,41]. The choice to include or exclude avoided landfilling in/from the system boundaries should be based on the systems investigated and how they differ from one another.…”

Section: Life Cycle Phasesmentioning

confidence: 99%

Are LCA Studies on Bulk Mineral Waste Management Suitable for Decision Support? A Critical Review

et al. 2021

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Bulk mineral waste materials are one of the largest waste streams worldwide and their management systems can differ greatly depending on regional conditions. Due to this variation, the decision-making context is of particular importance when studying environmental impacts of mineral waste management systems with life cycle assessment (LCA). We follow the premise that LCA results—if applied in practice—are always used in an improvement (i.e., decision-making) context. But how suitable are existing LCA studies on bulk mineral waste management for decision support? To answer this question, we quantitatively and qualitatively assess 57 peer-reviewed bulk mineral waste management LCA studies against 47 criteria. The results show inadequacies regarding decision support along all LCA phases. Common shortcomings are insufficient attention to the specific decision-making context, lack of a consequential perspective, liberal use of allocation and limited justification thereof, missing justifications for excluded impact categories, inadequately discussed limitations, and incomplete documentation. We identified the following significant issues for bulk mineral waste management systems: transportation, the potential leaching of heavy metals, second-order substitution effects, and the choice to include or exclude avoided landfilling and embodied impacts. When applicable, we provide recommendations for improvement and point to best practice examples.

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Life cycle assessment of construction and demolition waste management in a large area of São Paulo State, Brazil

Cited by 89 publications

References 37 publications

Renewable energy from solid waste: life cycle analysis and social welfare

Renewable energy from solid waste: life cycle analysis and social welfare

Cement-Matrix Composites Using CFRP Waste: A Circular Economy Perspective Using Industrial Symbiosis

Are LCA Studies on Bulk Mineral Waste Management Suitable for Decision Support? A Critical Review

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