Life cycle assessment on recycled e-waste concrete

Goh, Pei Gy; Maghfouri, Mehdi; Onn, Chiu Chuen; Loo, Siaw Chuing

doi:10.1016/j.cscm.2022.e01412

Cited by 11 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The choice to use the ReCiPe method stems from the fact that, although there might be more up-to-date (and more complicated) procedures, this still represents an effective and currently recognized (considered useful) method to convert life cycle inventories to a limited number of life cycle impact scores, as evidenced by recent studies that refer to it in the field of building construction (Batista dos Santos et al 2022a, b;Shi et al 2022;Goh et al 2022).…”

Section: Goal and Scope Definitionmentioning

confidence: 99%

Environmental assessment of a new building envelope material derived from urban agriculture wastes: the case of the tomato plants stems

Llorach-Massana

Cirrincione

Sierra-Pérez

et al. 2023

Int J Life Cycle Assess

View full text Add to dashboard Cite

Purpose Decarbonizing cities is one of today’s biggest challenges. In this regard, particular attention has been paid on improving the environmental performance of buildings. In this framework, this work consists in assessing the environmental impact of an innovative building envelope component derived from urban agriculture (UA) wastes. In fact, rooftop UA seems to be a possible solution to the rising food demand due to increasing urban demographic growth. Consequently, rooftop UA wastes need to be treated in sustainable ways. Methods This study aims to determine the carbon footprint and embodied energy of a new infill wall material, derived from UA wastes produced by a building rooftop greenhouse tomato crop, and evaluate the potential biogenic carbon that such by-product could fix temporally until its end of life. After an initial description of the manufacturing process of the new material, its carbon footprint and embodied energy have been calculated by means of the life cycle assessment (LCA) methodology according to the ISO 14044 and the ISO 14067 guidelines adapted to the analyzed context. In particular, the inventory analysis is based on data collected from the production of samples of the new material at the laboratory scale. Results and discussion The results of the LCA indicate that, when the biogenic carbon fixed in the UA wastes is considered, a negative carbon footprint of − 0.2 kg CO2 eq. per kg of material can be obtained. Hence, it can be assumed that from a life cycle perspective the material is able to fix carbon emissions instead of emitting them. Specifically, for the considered scenario, approximately 0.42 kg CO2 eq./m2 per year could be sequestered. However, the crop area required to produce enough waste to manufacture a unit of material is quite high. Therefore, future studies should focus on individuate solutions to reduce the density of the new component, and also different urban crops with higher waste production rates. Conclusions The outcomes of the study put in evidence the potential of the new proposed infill wall component in fixing carbon emissions from UA, allowing to also compensate those relating to the production and transportation stages of the component life cycle. Moreover, producing by-products with UA wastes, hence temporally storing the carbon fixed by crops, may contribute to reduce the carbon cycles speed conversely to traditional waste management solutions, other than lower new raw materials depletion.

show abstract

Section: Goal and Scope Definitionmentioning

confidence: 99%

Environmental assessment of a new building envelope material derived from urban agriculture wastes: the case of the tomato plants stems

Llorach-Massana

Cirrincione

Sierra-Pérez

et al. 2023

Int J Life Cycle Assess

View full text Add to dashboard Cite

show abstract

“…Goh et al (2022) analysed the comparative environmental impact of recycled e-waste concrete among conventional concrete, concrete with 20% coarse aggregate replaced by e-plastic, 20% e-plastic with 30% cement replaced by Ground granulated blast furnace slag (GGBS), and 200% e-plastic with 100% cement replaced by GGBS. They reported that scenario 4 showed an overall environmental impact reduction [23]. Lamba et al (2022) reviewed the recycling and reuse of plastic wastes as construction materials and e-plastics from the construction industries.…”

Section: Using E-plastic For Plastic Aggregated Concretementioning

confidence: 99%

Circulating the E-Waste Recovery from the Construction and Demolition Industries: A Review

Farjana,

Mungombe,

Gamage

et al. 2023

Sustainability

View full text Add to dashboard Cite

E-waste or electronic waste uses electrical power from a power cord/plug/battery. Construction and demolition (C&D) industries use various electronic components such as cables, switches, sockets, electrical heat pumps, air conditioning systems, and solar panels, which become e-waste at the end-of-life-cycle stages. E-waste contains valuable metals/non-metals/plastics that are recoverable and recyclable. E-waste disposal is banned from landfills in Victoria (Australia), because of their toxic components that require an additional waste separation process to avoid considerable environmental emissions and costs of separation and safe disposal. This paper aims to review the alternative circularity scenarios for recoverable materials from e-waste the C&D industries. Alternative scenarios for e-waste handling and management originating from the C&D industries are assessed in the current study. We identify and assess the important circularity indicators and waste management steps that would drive towards the identification of future initiatives or policy development to increase the resource recovery from e-waste. The policies would help to advocate for policy development for the C&D industries’ e-wastes.

show abstract

“…Nevertheless, if successful, MSW gasification can be a source of renewable energy, high volume reduction of waste, saving on landfill space [12,13]. More importantly, there has been rising interest in repurposing the by-products of MSW incineration and gasification, such as in Singapore where field trials are in place to test the NEWSand, a material generated from incineration bottom ash (IBA) and slag [14]. These by-products were previously regarded as waste and would be treated then disposed of in landfills.…”

Section: Introductionmentioning

confidence: 99%

Multiphase CFD-DEM model for gasification and melting applications

Soon¹

View full text Add to dashboard Cite

show abstract

Life cycle assessment on recycled e-waste concrete

Cited by 11 publications

References 27 publications

Environmental assessment of a new building envelope material derived from urban agriculture wastes: the case of the tomato plants stems

Environmental assessment of a new building envelope material derived from urban agriculture wastes: the case of the tomato plants stems

Circulating the E-Waste Recovery from the Construction and Demolition Industries: A Review

Multiphase CFD-DEM model for gasification and melting applications

Contact Info

Product

Resources

About