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Recycling Reduces CO2 and Other GHG Emissions

Author: جورج كيرنان / Posted: 30th يوليو 2024

Recycling plays a crucial role in reducing CO2 and other greenhouse gas (GHG) emissions. By reprocessing used materials, recycling minimises the need for energy-intensive manufacturing processes that contribute to high levels of emissions.

The Role of Recycling in Emissions Reduction

Recycling helps mitigate climate change by lowering the emissions associated with the production of goods from virgin materials. The process of extracting, transporting, and refining raw materials is energy-intensive and generates substantial GHG emissions. Recycling, on the other hand, requires significantly less energy, leading to a decrease in CO2 and other GHG emissions.

CO2 Reduction through Aluminium Recycling

Recycling aluminium is highly effective in reducing CO2 emissions. Producing new aluminium from recycled materials emits only 5% of the CO2 compared to producing it from raw bauxite ore. According to the International Aluminium Institute, recycling aluminium reduces CO2 emissions by 9 tonnes per tonne of aluminium produced.

CO2 Reduction through Paper Recycling

Paper recycling also significantly reduces CO2 emissions. The Environmental Paper Network reports that recycling one tonne of paper can save 4 tonnes of CO2 emissions compared to producing paper from virgin pulp. This substantial reduction highlights the benefits to the climate of recycling paper products.

Green Recycling and GHG Emissions

Green recycling practices significantly enhance GHG emissions reduction by using renewable energy sources like solar and wind to power recycling facilities, cutting CO2 emissions by up to 80%. Advanced sorting technologies with sensors and AI ensure efficient separation and high purity levels of recyclable materials, reducing contamination and emissions. Closed-loop recycling systems reuse materials continuously, conserving resources and saving up to 95% of the energy needed for new production, particularly with aluminium. Additionally, public education and eco-friendly product design promote a circular economy, making materials easier to recycle and further lowering emissions. This comprehensive approach maximises the environmental benefits of recycling and significantly mitigates climate change.

GHG Emissions Reduction through Steel Recycling

Recycling steel reduces GHG emissions by eliminating the need for energy-intensive  mining, extraction, and smelting processes. According to the World Steel Association, recycling one tonne of steel saves 1.5 tonnes of CO2 emissions. This significant reduction underscores the importance of steel recycling in combating climate change.

GHG Emissions Reduction through Plastic Recycling

Plastic recycling is crucial for reducing GHG emissions due to the high energy demands of producing new plastics from petroleum. For example, recycling PET plastic can reduce GHG emissions by 1.5 tonnes of CO2 per tonne of plastic recycled, according to the Association of Plastics Recyclers. This reduction results from decreased energy-intensive raw material extraction and processing. The Ellen MacArthur Foundation notes that increasing global plastic recycling rates to 55% by 2040 could avoid 1.6 billion tonnes of CO2 emissions annually. Advanced recycling technologies, like chemical recycling, break down plastics into their original monomers, enabling high-quality recycling and reducing new plastic production needs. Countries with comprehensive recycling programs demonstrate the potential for significant emissions reductions through effective recycling systems, underscoring the pivotal role of plastic recycling in mitigating climate change.

Emissions Reduction through Recycling

The following statistics highlight the impact of recycling on reducing CO2 emissions:
 
Aluminium Recycling: Reduces CO2 emissions by 9 tonnes per tonne of aluminium.
Paper Recycling: Saves 4 tonnes of CO2 emissions per tonne of paper recycled.
Steel Recycling: Saves 1.5 tonnes of CO2 emissions per tonne of steel recycled.
Plastic (PET) Recycling: Reduces CO2 emissions by 1.5 tonnes per tonne of plastic recycled.

Successful Emissions Reduction through Recycling

Several regions have implemented recycling programs that have significantly contributed to reducing CO2 and other GHG emissions:
 
USA: The recycling rate is 32.1%, resulting in a reduction of approximately 59.7 million tonnes of CO2 emissions annually​ (US EPA)​​ (US EPA)​.
EU: The recycling rate is 47%, resulting in a reduction of approximately 188 million tonnes of CO2 emissions annually​ (US EPA)​.
UK: The recycling rate is 44%, resulting in a reduction of approximately 18 million tonnes of CO2 emissions annually​ (US EPA)​.
Germany: The recycling rate is 67.8%, resulting in a reduction of approximately 50 million tonnes of CO2 emissions annually​ (US EPA)​.
Japan: The overall recycling rate is around 20%, resulting in a reduction of approximately 9.6 million tonnes of CO2 emissions annually​ (US EPA)​.
South Korea: The recycling rate is 53.7%, resulting in a reduction of approximately 23.4 million tonnes of CO2 emissions annually​ (US EPA)​.

The Role of Recycling in Combating Climate Change

Recycling is a critical strategy for reducing CO2 and other GHG emissions, contributing significantly to climate change mitigation. By decreasing the need for energy-intensive production processes and utilising existing materials, recycling helps lower the carbon footprint of various industries. The statistics and case studies presented here demonstrate the substantial impact of recycling on emissions reduction. As communities and policymakers continue to prioritise green recycling practices, we can look forward to a future with reduced emissions and a healthier planet.