Quantifying the Carbon Reduction Potential of Recycling Construction Waste Based on Life Cycle Assessment: A Case of Jiangsu Province
Abstract
:1. Introduction
2. Methodology
2.1. CDRW Generation Estimation
2.1.1. Waste Generation Rate Calculation Method
2.1.2. Nonlinear Autoregressive Artificial Neural Network Model
2.2. Assessment of Carbon Reduction Potential from Recycling CDRW
2.3. Data Sources
3. Results and Discussion
3.1. CDRW Generation in Jiangsu Province
3.2. Carbon Reduction Potential of Recycling CDRW
3.3. Future Carbon Reduction Potential Prediction for CDRW Recycling
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Parameter | Unit | Value | Reference |
---|---|---|---|
Construction waste generation rate per unit area | t/m2 | 0.055 | Liu et al. [42] |
Demolition waste generation rate per unit area | t/m2 | 1.35 | Liang et al. [3] |
Residential renovation waste generation rate per unit area | t/m2 | 0.1 | Liang et al. [3] |
Non-residential renovation waste generation rate per unit area | t/m2 | 0.15 | Liang et al. [3] |
Construction demolition area coefficient | % | 20 | Yuan et al. [43] |
Year | Construction Area | Completed Residential Area | Completed Non-Residential Area |
---|---|---|---|
2000 | 42.68 | 17.75 | 3.68 |
2001 | 48.58 | 19.24 | 4.18 |
2002 | 61.16 | 22.63 | 4.34 |
2003 | 89.25 | 26.21 | 5.00 |
2004 | 123.16 | 32.17 | 6.89 |
2005 | 156.19 | 44.98 | 10.02 |
2006 | 191.08 | 47.46 | 11.88 |
2007 | 232.22 | 51.61 | 11.79 |
2008 | 281.88 | 54.90 | 12.15 |
2009 | 299.54 | 67.31 | 17.11 |
2010 | 351.07 | 65.54 | 21.43 |
2011 | 405.00 | 64.77 | 19.71 |
2012 | 450.98 | 76.87 | 21.61 |
2013 | 525.74 | 75.84 | 21.27 |
2014 | 576.38 | 72.59 | 23.61 |
2015 | 581.18 | 79.30 | 23.67 |
2016 | 587.62 | 76.03 | 24.71 |
2017 | 594.64 | 70.90 | 24.92 |
2018 | 626.73 | 63.60 | 21.76 |
2019 | 656.87 | 69.69 | 24.00 |
2020 | 678.89 | 82.73 | 28.78 |
Material | Construction and Demolition Waste Percentage | Renovation Waste Percentage | CDRW Recycling Rate |
---|---|---|---|
Steel | 7 | 2 | 75 |
Concrete | 48 | 31 | 75 |
Wood | 2 | 3 | 20 |
Bricks | 21 | 42 | 55 |
Ceramics | 10 | 18 | 55 |
Glass | 4 | 0.5 | 50 |
Mortar | 8 | − | 8 |
Material | Carbon Emission Factor of Product Stage (kg CO2e/t) | Distance (km) | Carbon Emission Factor of Transportation Stage (kg CO2e/(t·km)) | Carbon Emission Factor of Process Stage (kg CO2e/t) |
---|---|---|---|---|
Steel | 2380 | 500 | 0.057 | 430 |
Concrete | 295 | 40 | 0.057 | 15 |
Wood | 200 | 500 | 0.057 | 190 |
Bricks | 292 | 40 | 0.179 | 1 |
Ceramics | 620 | 500 | 0.057 | 550 |
Glass | 1130 | 500 | 0.129 | 380 |
Mortar | 735 | 500 | 0.057 | 15 |
Material | Current Scenario (Mt CO2e) | Percentage (%) | Maximum Scenario (Mt CO2e) | Percentage (%) |
---|---|---|---|---|
Steel | 23.16 | 39.48 | 30.88 | 32.02 |
Concrete | 22.31 | 38.04 | 29.75 | 30.84 |
Wood | 0.03 | 0.04 | 0.13 | 0.13 |
Bricks | 7.45 | 12.70 | 13.54 | 14.04 |
Ceramics | 1.17 | 1.99 | 2.12 | 2.20 |
Glass | 3.51 | 5.98 | 7.01 | 7.27 |
Mortar | 1.04 | 1.77 | 13.01 | 13.49 |
Total | 58.65 | 100 | 96.44 | 100 |
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Liu, H.; Guo, R.; Tian, J.; Sun, H.; Wang, Y.; Li, H.; Yao, L. Quantifying the Carbon Reduction Potential of Recycling Construction Waste Based on Life Cycle Assessment: A Case of Jiangsu Province. Int. J. Environ. Res. Public Health 2022, 19, 12628. https://doi.org/10.3390/ijerph191912628
Liu H, Guo R, Tian J, Sun H, Wang Y, Li H, Yao L. Quantifying the Carbon Reduction Potential of Recycling Construction Waste Based on Life Cycle Assessment: A Case of Jiangsu Province. International Journal of Environmental Research and Public Health. 2022; 19(19):12628. https://doi.org/10.3390/ijerph191912628
Chicago/Turabian StyleLiu, Hongmei, Rong Guo, Junjie Tian, Honghao Sun, Yi Wang, Haiyan Li, and Lu Yao. 2022. "Quantifying the Carbon Reduction Potential of Recycling Construction Waste Based on Life Cycle Assessment: A Case of Jiangsu Province" International Journal of Environmental Research and Public Health 19, no. 19: 12628. https://doi.org/10.3390/ijerph191912628