| Title | Building materials in a circular economy: The case of wood waste as CO2-sink in bio concrete |
|---|---|
| ID_Doc | 4611 |
| Authors | Caldas, LR; Saraiva, AB; Lucena, AFP; Da Gloria, MY; Santos, AS; Toledo, RD |
| Title | Building materials in a circular economy: The case of wood waste as CO2-sink in bio concrete |
| Year | 2021 |
| Published | |
| Abstract | This paper aims to assess greenhouse gases' (GHG) emissions in the life cycle of wood bio-concretes (WBC) production when recycled wood shavings (WS) are used as a circular economy (CE) strategy. Two WBC were evaluated, one with a higher content of WS (WBC-HC) and another with a lower content (WBC-LC). Different WS recycling and transportation scenarios were evaluated. The Life Cycle Assessment (LCA) methodology was used, considering a cradle-to-gate scope, comparing two methods for calculation of GHG emissions: IPCC GWP100 and GWP(bi)(o). The transport analysis was carried out considering the WBC production in 26 Brazilian cities, according to different locations where waste WS are generated. In order to increase the robustness of the study, a sensitivity analysis was performed for: types of WS allocation, the origin of WS (waste x virgin materials), transportation efficiency, and electricity grid matrix. We verified that the waste WS content increase in WBC resulted in climate change mitigation for all cases and scenarios (when the biogenic carbon is considered). However, this benefit can vary according to WS availability and transport efficiency. Therefore, transportation must deserve special attention for the CE evaluation. When the GWP(bi)(o) method is used and CO2 capture during the eucalypt growth is accounted for, the GHG emissions of WBC production can be very low (15 kgCO(2)-eq/m(3)). We conclude that recycling wood waste to use in WBC can be considered a good CO2 sink and a pathway for the low-carbon and circular construction industry. |
Similar Articles
| ID | Score | Article |
|---|---|---|
3942
|
Jahan, I; Zhang, GM; Bhuiyan, M; Navaratnam, S Circular Economy of Construction and Demolition Wood Waste-A Theoretical Framework Approach(2022)Sustainability, 14, 17 | |
| 26184
|
Giama, E; Papadopoulos, AM Benchmarking carbon footprint and circularity in production processes: The case of stonewool and extruded polysterene(2020) | |
| 3525
|
Simoes, F; Rios-Davila, FJ; Paiva, H; Maljaee, H; Morais, M; Ferreira, VM Sustainability Evaluation Using a Life Cycle and Circular Economy Approach in Precast Concrete with Waste Incorporation(2021)Applied Sciences-Basel, 11, 24 | |
| 12523
|
Tsai, WT Carbon-Negative Policies by Reusing Waste Wood as Material and Energy Resources for Mitigating Greenhouse Gas Emissions in Taiwan(2021)Atmosphere, 12.0, 9 | |
| 17362
|
Backes, JG; Del Rosario, P; Petrosa, D; Traverso, M; Hatzfeld, T; Günther, E Building Sector Issues in about 100 Years: End-Of-Life Scenarios of Carbon-Reinforced Concrete Presented in the Context of a Life Cycle Assessment, Focusing the Carbon Footprint(2022)Processes, 10, 9 | |
| 22179
|
Ruiz, LAL; Ramon, XR; Mercedes, CML; Domingo, SG Multicriteria analysis of the environmental and economic performance of circularity strategies for concrete waste recycling in Spain(2022) | |
| 16531
|
Garcia, R; Alvarenga, RAF; Huysveld, S; Dewulf, J; Allacker, K Accounting for biogenic carbon and end-of-life allocation in life cycle assessment of multi-output wood cascade systems(2020) | |
| 22471
|
Luthin, A; Crawford, RH; Traverso, M Demonstrating circular life cycle sustainability assessment - a case study of recycled carbon concrete(2023) | |
| 21131
|
Paz, CF; Biela, R; Punhagui, KRG; Possan, E Life cycle inventory of recycled aggregates derived from construction and demolition waste(2023)Journal Of Material Cycles And Waste Management, 25.0, 2 | |
| 28191
|
Ghisellini, P; Ripa, M; Ulgiati, S Exploring environmental and economic costs and benefits of a circular economy approach to the construction and demolition sector. A literature review(2018) |