Improving construction and demolition waste collection service in an urban area using a simheuristic approach: A case study in Sydney, Australia

2021 ◽  
Vol 280 ◽  
pp. 124138 ◽  
Author(s):  
Maziar Yazdani ◽  
Kamyar Kabirifar ◽  
Boadu Elijah Frimpong ◽  
Mahdi Shariati ◽  
Mirpouya Mirmozaffari ◽  
...  
Keyword(s):  
Urban Area ◽  
Construction And Demolition Waste ◽  
Waste Collection ◽  
Demolition Waste ◽  
Sydney Australia

Life Cycle GHG Assessment of Mixed Construction and Demolition Waste Treatment for End of Life Recovery Facility Design: A Sydney, Australia Case Study

2020 ◽  
Author(s):  
Tahli Moore ◽  
Hao Zhang
Keyword(s):  
Life Cycle ◽  
Industrial Waste ◽  
Waste Treatment ◽  
New South ◽  
Ghg Emissions ◽  
Construction And Demolition Waste ◽  
Demolition Waste ◽  
South Wales ◽  
Sydney Australia

Abstract Historically in Australia, mixed Construction and Demolition waste, and Commercial and Industrial waste has been traditionally landfilled. As environmental impacts of landfilling is becoming more evident New South Wales policy makers and innovators have begun exploring an incineration strategy to use such waste to generate electricity. The objective of this study is to utilise life cycle assessment to evaluate GHG emissions from this waste treatment strategy and the environmental impact of a case study facility, in Sydney Australia. The system boundary includes the thermal treatment of waste through incineration, the electricity generation from the steam turbine and air pollution control processes involved within. The functional unit is based on 1 tonne of input mixed Construction and Demolition waste and Commercial and Industrial waste. GHG emissions are calculated and the result shows that the facility generates 0.994 MWh/tonne waste and 1.16 tCO2e/MWh electricity. This emission is lower than a brown coal fired powerplant emission factor 1.31 tCO2e/MWh. The results from this study assists understanding and policy making for the future of Energy-from-Waste as part of the generation mix in New South Wales, Australia.

The Traceability of Construction and Demolition Waste in Flanders via Blockchain Technology: A Match Made in Heaven?

2021 ◽  
Vol 18 (4) ◽  
pp. 347-369
Author(s):  
Jonas Voorter ◽  
Christof Koolen
Keyword(s):  
Circular Economy ◽  
Construction And Demolition Waste ◽  
Waste Processing ◽  
Construction Sector ◽  
Sustainable Society ◽  
Demolition Waste ◽  
Blockchain Technology ◽  
Legal Case ◽  
Made In

Abstract The construction sector plays a crucial role in the transition to a circular economy and a more sustainable society. With this objective in mind, Flanders – the Dutch speaking part of Belgium – makes use of a traceability procedure for construction and demolition waste in order to guarantee that value can be derived from downstream waste processing activities. This article takes this traceability procedure as a legal case study and examines if the use of blockchain technology could lead to even stronger supply chains, better data management, and, more generally, a smoother transition to circular practices in the construction sector.

scholarly journals From Buildings’ End of Life to Aggregate Recycling under a Circular Economic Perspective: A Comparative Life Cycle Assessment Case Study

2021 ◽  
Vol 13 (17) ◽  
pp. 9625
Author(s):  
Ambroise Lachat ◽  
Konstantinos Mantalovas ◽  
Tiffany Desbois ◽  
Oumaya Yazoghli-Marzouk ◽  
Anne-Sophie Colas ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
End Of Life ◽  
Environmental Impacts ◽  
Open Loop ◽  
Decision Makers ◽  
Construction And Demolition Waste ◽  
Recycled Aggregates ◽  
Demolition Waste

The demolition of buildings, apart from being energy intensive and disruptive, inevitably produces construction and demolition waste (C&Dw). Unfortunately, even today, the majority of this waste ends up underexploited and not considered as valuable resources to be re-circulated into a closed/open loop process under the umbrella of circular economy (CE). Considering the amount of virgin aggregates needed in civil engineering applications, C&Dw can act as sustainable catalyst towards the preservation of natural resources and the shift towards a CE. This study completes current research by presenting a life cycle inventory compilation and life cycle assessment case study of two buildings in France. The quantification of the end-of-life environmental impacts of the two buildings and subsequently the environmental impacts of recycled aggregates production from C&Dw was realized using the framework of life cycle assessment (LCA). The results indicate that the transport of waste, its treatment, and especially asbestos’ treatment are the most impactful phases. For example, in the case study of the first building, transport and treatment of waste reached 35% of the total impact for global warming. Careful, proactive, and strategic treatment, geolocation, and transport planning is recommended for the involved stakeholders and decision makers in order to ensure minimal sustainability implications during the implementation of CE approaches for C&Dw.

Environmental and economic advantages of adopting reverse logistics for recycling construction and demolition waste: A case study of Brazilian construction and recycling companies

2019 ◽  
Vol 37 (2) ◽  
pp. 176-185 ◽  
Author(s):  
Geraldo C Oliveira Neto ◽  
José MF Correia
Keyword(s):  
Environmental Impact ◽  
Solid Waste ◽  
Reverse Logistics ◽  
Waste Treatment ◽  
Economic Assessment ◽  
Construction And Demolition Waste ◽  
Demolition Waste ◽  
Construction Companies ◽  
Solid Waste Treatment

The aim of this study was to assess the economic and environmental advantages of implementing reverse logistics to recycle solid waste from construction companies. The adopted research method was based on a systematic literature review and two case studies. For the economic assessment, the return on investment, the internal rate of return, and the discounted payback factors were considered, while the material intensity factor was used for the environmental impact assessment. This study shows that there are economic and environmental advantages associated with the use of reverse logistics for solid waste treatment and recycling. In 2016, the purchase of recycled blocks resulted in a profit of over US$45,000 for one company, and another company earned almost US$250,000 in the same year by recycling solid waste from manufacturing blocks and selling iron, wood, paper, and plastics. Furthermore, the environmental impact was reduced. This paper contributes to the dissemination of knowledge regarding the advantages of adopting reverse logistics for recycling construction and demolition waste, and creates new opportunities for companies.

A Tentative Study on Quantity of Construction and Demolition Waste Generation in Tianjin

2014 ◽  
Vol 955-959 ◽  
pp. 2727-2730
Author(s):  
Juan Liu ◽  
Yong Hai Xue ◽  
Ya Nan Yang
Keyword(s):  
Urban Area ◽  
Construction And Demolition Waste ◽  
Waste Generation ◽  
Demolition Waste ◽  
Construction Waste ◽  
The City

This research makes a tentative study on generation of construction and demolition waste (CDW) in the city of Tianjin. Based on statistic data on construction area, amounts of construction waste, renewal transformation waste and decoration waste are estimated respectively, and summed up to the result of total CDW generation from 1996 to 2012. It shows that total CDW generation in urban area of Tianjin is up to 19.11 million tons in 2012.

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