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WHO issues new, lower Global Air Quality Guidelines for classical pollutants

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New WHO has issued new Global Air Quality Guidelines (AQGs) that reduce levels of key air pollutants, some of which also contribute to climate change. Recommended 2021 AQG levels compared to 2005 air quality guidelines. and carbon monoxide (CO)—it also has an impact on other damaging pollutants. Source: WHO.

Pollution 435
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New study confirms extensive gas leaks in the North Sea; recommends stricter guidelines for handling of abandoned wells

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Methane is the second most important greenhouse gas after carbon dioxide. The authors of the study encourage the industry to publish their data and recommend more independent emission measurements from abandoned wells in order to develop stricter guidelines and legally binding regulations for abandonment procedures.

Gas 273
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International Copper Association pledges to achieve net zero carbon emissions by 2050

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The Copper—The Pathway to Net Zero roadmap builds on previous best practice guidelines by ICA. If required at all, carbon offsets and commercially unrealized technologies such as carbon capture would be limited to minimal, highly specific cases.

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Researchers develop wave-energy-driven CO2 reduction system for production of carbon-based liquid fuels

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Finally, they present design guidelines for achieving a cost-effective, efficient, and large-scale wave-energy-driven CO 2 reduction system for liquid fuel production. Schematic of the ocean-wave-driven electrochemical CO 2 RR system for liquid fuel production. mol of formic acid per day at 18 knots wind speed.

Carbon 370
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EPA proposes new pollution standards for fossil fuel-fired power plants

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EPA says that the proposed limits and guidelines would require ambitious reductions in carbon pollution based on proven and cost-effective control technologies that can be applied directly to power plants. They also provide owners and operators of power plants with lead time and compliance flexibilities.

EPA 225
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U Birmingham study finds DPFs have limited impact on ultrafine particle emissions

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An open-access paper on their work is published in the journal Environment International While the World Health Organization has not yet set a guideline for safe levels of ultrafine particles, it recognizes that particulate pollution overall is associated with negative impacts on cardiovascular and respiratory health.

Emissions 210
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ETH Zurich catalyst can convert polypropylene directly into motor oil with high selectivity

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Researchers at the Swiss Federal Institute of Technology (ETH) Zurich, Switzerland, have developed a carbon-supported platinum nanoparticle catalyst that can achieve complete hydrocracking of polypropylene into liquid hydrocarbons (C 5 –C 45 ). The platinum phase controls the activity, while the carbon carrier regulates selectivity.

Oil 389