Consequential LCA modelling of building refurbishment in New Zealand- an evaluation of resource and waste management scenarios

Ghose, Agneta; Pizzol, Massimo; McLaren, Susan

doi:10.1016/j.jclepro.2017.07.099

Cited by 62 publications

(28 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The third approach is based on trend analysis applied to energy scenarios (Schmidt et al 2011;Muñoz 2015;Ghose et al 2017;Muñoz et al 2017;). The energy scenarios can either be self-generated via energy system models or equivalent tools or sourced from publicly available energy projections.…”

Section: Introductionmentioning

confidence: 99%

The integration of long-term marginal electricity supply mixes in the ecoinvent consequential database version 3.4 and examination of modeling choices

Vandepaer

Treyer

Mutel

et al. 2018

Int J Life Cycle Assess

View full text Add to dashboard Cite

Purpose The long-term marginal electricity supply mixes of 40 countries were generated and integrated into version 3.4 of the ecoinvent consequential database. The total electricity production originating from these countries accounts for 77% of the current global electricity generation. The goal of this article is to provide an overview of the methodology used to calculate the marginal mixes and to evaluate the influence of key parameters and methodological choices on the results. Methods The marginal mixes are based on public energy projections from national and international authorities and reflect the accumulated effect of changes in demand for electricity on the installation and operation of new-generation capacities. These newly generated marginal mixes are first examined in terms of their compositions and environmental impacts. They are then compared to several sets of alternative electricity supply mixes calculated using different methodological choices or data sources. Results and discussion Renewable energy sources (RES) as well as natural gas power plants show the highest growth rates and usually dominate the marginal mixes. Nevertheless, important variations may exist between the marginal mixes of the different countries in terms of their technological compositions and environmental impacts. The examination of the modeling choices reveals substantial variations between the marginal mixes integrated into the ecoinvent consequential database version 3.4 and marginal mixes generated using alternative modeling options. These different modeling possibilities include changes in the methodology, temporal parameters, and the underlying energy scenarios. Furthermore, in most of the impact categories, average (i.e., attributional) mixes cause higher impact scores than marginal mixes due to higher shares of RES in marginal mixes. Conclusions Accurate and consistent data for electricity supply is integrated into a consequential database providing a strong basis for the development of consequential Life Cycle Assessments. The methodology adopted in this version of the database eliminates several shortcomings from the previous approach which led to unrealistic marginal mixes in several countries. The use of energy scenarios allows the evolution of the electricity system to be considered within the definition of the marginal mixes. The modeling choices behind the electricity marginal mix should be adjusted to the goal and scope of individual studies and their influence on the results evaluated. Keywords CLCA. Ecoinvent. Life cycle inventory (LCI) database. Long-term marginal electricity supply mix 1 Using the IPCC Global Warming Potentials (GWP) characterization factors with a time horizon of 100 years and the calculation approach detailed in Mutel (2018).

show abstract

Section: Introductionmentioning

confidence: 99%

The integration of long-term marginal electricity supply mixes in the ecoinvent consequential database version 3.4 and examination of modeling choices

Vandepaer

Treyer

Mutel

et al. 2018

Int J Life Cycle Assess

View full text Add to dashboard Cite

show abstract

“…it is possible to reduce the global warming impact by 89% and the minerals extraction impact by 73% [105]. Ghose et al [106], found that the re-use of building materials in New Zealand could reduce environmental impact by 15%-25% as compared to using recycled materials (5%).…”

Section: Sustainability In Residential Buildingsmentioning

confidence: 99%

A Review of Residential Buildings’ Sustainability Performance Using a Life Cycle Assessment Approach

2019

J Sustain Res

View full text Add to dashboard Cite

Achieving sustainable buildings is a challenging task. Building sustainability involves "green building" design and construction, taking account of both environmental elements and economic benefits, along with social obligations to the society we live in. This article aims to critically review and analyse studies of the building and construction industry that deal with aspects of sustainability, including environmental life cycle assessment, life cycle costing, social life cycle assessment and cleaner production strategies, and to examine the research gaps in order to generate recommendations for further research. About 807 refereed research articles on residential buildings published over the last 10 years (2009-2019), were downloaded, having been searched from online databases (including Scopus, Web of Science, ScienceDirect and Compendex) using keywords. Building materials, embodied energy and operating energy were found to contribute chiefly to the environmental and socioeconomic objectives of the construction industry. Many studies covered only the life cycle tools (such as environmental life cycle assessment, life cycle costing, and social lifecycle assessment) used in the sustainability assessment process. The "carbon footprint" concept is the most commonly used indicator in building sustainability assessments, underlining the urgent need to deploy more diverse environmental impact categories in order to avoid trade-offs among environmental, social and economic objectives. The social life cycle assessment tool needs a methodological breakthrough to improve its application in the building industry. In most of the studies, only an approximate evaluation of buildings' service life is the main consideration in life cycle assessments, while the important factor of the quality of the materials used in buildings is often neglected. However, a methodological approach to estimate the service life of structures that considers the durability of different building components would provide a more realistic life cycle assessment. Hence it would be judicious to address the thematic and methodological gaps identified in this paper, thereby optimising the understanding and communication of life cycle outcomes in building sustainability.

show abstract

“…In the LCA approach, energy consumption and CO 2 emission are the two most evaluated impact categories [ 98 ]. Application of the LCA method can be classified into six aspects: environmental impacts of a building [ 44 , 99 , 100 ], environmental impacts of construction waste in the construction phase [ 101 , 102 ], environmental impacts of demolition waste in the end-of-life phase [ 103 , 104 ], environmental impacts of demolition waste in the refurbishment phase [ 105 ], environmental impacts of recycled aggregates [ 106 , 107 , 108 , 109 ], and environmental impacts under different CDW management strategies [ 14 , 110 , 111 , 112 , 113 ]. Results show that, compared with landfill, most of waste recycling and reuse methods bring net environmental benefits [ 14 , 101 , 106 , 110 ].…”

Section: Comprehensive Framework For the Ma-cdwmentioning

confidence: 99%

“…Results show that, compared with landfill, most of waste recycling and reuse methods bring net environmental benefits [ 14 , 101 , 106 , 110 ]. On-site recycling environmental benefits are higher than off-site recycling [ 14 , 104 , 105 , 112 ], and the environmental benefits of off-site recycling are affected by transport distance [ 113 ].…”

Section: Comprehensive Framework For the Ma-cdwmentioning

confidence: 99%

Managerial Areas of Construction and Demolition Waste: A Scientometric Review

Chen

et al. 2018

IJERPH

View full text Add to dashboard Cite

In past decades, the massive generation of construction and demolition waste (CDW) was increasingly threatening the public environment and humanity health worldwide. A large amount of research has been devoted to the CDW from difference perspectives. However, few scholars have attempted to summarize and review the extant studies, especially in the managerial areas of CDW (MA-CDW). This paper fills this gap via a systematic and quantitative review in the CDW management field. Employing the scientometric analysis method, a total of 261 articles published from 2006 to 2018 were collected to construct the knowledge map and comprehensive framework for MA-CDW. Results show that the overall evolutionary trend of MA-CDW was from basic management concepts to internal and external challenges analysis, to organizational strategy and innovative management practices. The major MA-CDW knowledge domains were identified and summarized into four pillars, namely: (1) factor and challenge; (2) composition and quantification; (3) assessment and comparison; and (4) technology and method. Based on the trend, knowledge gaps and future research directions were found out and discussed. This study contributes to the existing MA-CDW knowledge by presenting a comprehensive knowledge framework. Furthermore, these findings can provide the researchers and practitioners with an in-depth understanding for the sustainable governance of CDW.

show abstract

Consequential LCA modelling of building refurbishment in New Zealand- an evaluation of resource and waste management scenarios

Cited by 62 publications

References 35 publications

The integration of long-term marginal electricity supply mixes in the ecoinvent consequential database version 3.4 and examination of modeling choices

The integration of long-term marginal electricity supply mixes in the ecoinvent consequential database version 3.4 and examination of modeling choices

A Review of Residential Buildings’ Sustainability Performance Using a Life Cycle Assessment Approach

Managerial Areas of Construction and Demolition Waste: A Scientometric Review

Contact Info

Product

Resources

About