Comparative LCA on using waste materials in the cement industry: A Hong Kong case study

Hossain, Md. Uzzal; Poon, Chi Sun; Lo, Irene M.C.; Cheng, Jack Chin Pang

doi:10.1016/j.resconrec.2016.12.012

Cited by 195 publications

(70 citation statements)

References 40 publications

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“…For instance, by replacing cement with alternative binding materials (e.g., pulverized fuel ash, ground granulated blast furnace slag, and silica fume) in the concrete mixes can save significant amount of cement and the associated CO 2 emissions [51,73]. In addition, the use of alternative or low carbon cement, i.e., eco-glass cement or Portland fly-ash cement, can also considerably reduce the carbon footprint of concrete [74].…”

Section: Resultsmentioning

confidence: 99%

Comprehensive Evaluation of Carbon Emissions for the Development of High-Rise Residential Building

Yim¹,

Hossain

et al. 2018

Buildings

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Despite the fact that many novel initiatives have been put forward to reduce the carbon emissions of buildings, there is still a lack of comprehensive investigation in analyzing a buildings’ life cycle greenhouse gas (GHG) emissions, especially in high-density cities. In addition, no studies have made attempt to evaluate GHG emissions by considering the whole life cycle of buildings in Hong Kong. Knowledge of localized emission at different stages is critical, as the emission varies greatly in different regions. Without a reliable emission level of buildings, it is difficult to determine which aspects can reduce the life cycle GHG emissions. Therefore, this study aims to evaluate the life cycle GHG emissions of buildings by considering “cradle-to-grave” system boundary, with a case-specific high-rise residential housing block as a representative public housing development in Hong Kong. The results demonstrated that the life cycle GHG emission of the case residential building was 4980 kg CO2e/m2. The analysis showed that the majority (over 86%) of the emission resulted from the use phase of the building including renovation. The results and analysis presented in this study can help the relevant parties in designing low carbon and sustainable residential development in the future.

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Section: Resultsmentioning

confidence: 99%

Comprehensive Evaluation of Carbon Emissions for the Development of High-Rise Residential Building

Yim¹,

Hossain

et al. 2018

Buildings

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“…LCA methodology found a broad application in decision supporting within the environmental sustainability context due to numerous initiatives launched at national and international levels (UNEP, SETAC, …) in order to facilitate and support its application (Bjørn et al, 2018). Nowadays LCA, covering wide range of domains (energy sector, building industry, agriculture, waste management and others), is widely used within the environmental studies (Góralczyk, 2003;Perminova et al, 2016;Tricase et al, 2017;Hossain et al, 2017;El Hanandeh et al, 2017;Dijkman et al, 2018).…”

Section: Life-cycle Assessment: a Short Literature Reviewmentioning

confidence: 99%

Spatial Variability of Human Health Impacts: Application to a Biorefinery Process Implementation

Bratec

Marty

et al. 2019

Proc. Int. Conf. Eng. Des.

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More and more attention is paid nowadays to the human health concerns, associated with environmental problems arising from the fossil fuel use. The world scientific community offers new alternatives that, despite being more environmentally friendly, require an analysis of their potential environmental impacts. For example, biorefineries are becoming increasingly widespread nowadays offering a large gamma of bio-based products. However, it is necessary to take into account what potential effects such facility may have on the human health, depending on its geographical location since different territories may be more or less sensitive to its installation. Our study describes a new bioprocess implementation in terms of impact on human health through three countries: France, Belgium or China. In order to understand what territory can be more appropriate to the industrial process installation in terms of its effects on the human health, we propose to use the spatialized life-cycle analysis methodology.

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“…e life-cycle assessment of the boards and power generation made from waste wood is compared with the traditional landfill treatment. e waste of abandoned materials such as wood can be effectively avoided [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Comparative Environmental Evaluation of Straw Resources by LCA in China

Shang

Song

Yang

2020

Advances in Materials Science and Engineering

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Crop straw, as a widely used biomass resource, can be processed to produce renewable energy and green products. However, about 70% of straw were burned in the open air, causing serious environmental pollution and air pollution. In order to reduce the burden on the environment, the different straw management strategies are comparatively studied and evaluated by applying the life-cycle assessment (LCA) method. Within the system boundary from cradle to grave, three alternative scenarios, including straw particleboard, straw cement-bonded particleboard, and straw direct combustion power generation, are compared with the current common treatment (straw open burning). e comprehensive inventory analysis on each treatment scenario is carried out indepth, and the corresponding resource consumption and environmental impact of each treatment scenario are calculated, respectively. e LCA results showed that the environmental impacts of reusing crop straw to produce straw particleboard and cement-bonded particleboard (Scenario 1 and Scenario 2) is significantly reduced by 6% and 10%, by comparison with the use of wood resource. Greenhouse gas emissions from straw direct combustion power generation (Scenario 3) processes are reduced by 30% compared with coal power generation. From the environmental point of view, the scenario of straw particleboard product has the smallest impact on the environment, while straw open burning is not an advisable way due to the highest environmental impact from the highest greenhouse gas emissions and acidification effects. From the perspective of energy consumption, the energy consumption for the combustion power generation is the smallest in all scenarios. It is suggested that governments are supposed to construct reasonable scenarios for the straw disposition based on the local development status and condition. e research results can provide scientific guidance for the management strategy of the comprehensive utilization of straw resources.

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Comparative LCA on using waste materials in the cement industry: A Hong Kong case study

Cited by 195 publications

References 40 publications

Comprehensive Evaluation of Carbon Emissions for the Development of High-Rise Residential Building

Comprehensive Evaluation of Carbon Emissions for the Development of High-Rise Residential Building

Spatial Variability of Human Health Impacts: Application to a Biorefinery Process Implementation

Comparative Environmental Evaluation of Straw Resources by LCA in China

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