US EPA proposed Clean Air Act endangerment finding targets aviation fuel

Read the full story at the National Law Review.

On October 17, 2022, the United States Environmental Protection Agency issued a proposed finding that lead air pollution may reasonably be anticipated to endanger the public health and welfare within the meaning of Section 231(a) of the Clean Air Act, 42 U.S.C. § 7571, and further that engine emissions of lead from aircraft contribute to such pollution. This is a two-pronged “endangerment” and “cause or contribution” finding which addresses both elements provided under Section 231 which provides that EPA shall “issue proposed emission standards applicable to the emission of any air pollutant from any class or classes of aircraft engines which in his judgment causes, or contributes to, air pollution which may reasonably be anticipated to endanger public health or welfare.” An endangerment and contribution finding is therefore the first step in the process of regulating lead emissions from aviation fuels. EPA often, but not always, combines these endangerment findings with the substantive regulations and emissions limitations but has not done so here.    

Low- and zero-carbon fuels critical to meeting aviation decarbonization needs

Read the full story at GreenBiz.

The U.S. would have to more than double its biofuel production to meet domestic aviation energy demand, despite being the global leader in biofuel production.

SAF demand leads to shortages, prompting new products, partnerships

Read the full story at Environment + Energy Leader.

With the drive toward sustainable air travel intensifying, airlines and other air transportation companies are ramping up their use of sustainable aviation fuel (SAF). But as SAF demand grows, the aviation industry will be challenged by limited supplies of traditional SAF feedstocks like inedible animal fats and waste oils.

To meet demand in the face of limited supplies of these traditional SAF feedstocks, technology companies are competing to create new forms of SAF. Honeywell is the latest to announce a new technology for creation of SAF, describing it as “innovative ethanol-to-jet fuel processing technology that allows producers to convert corn-based, cellulosic, or sugar-based ethanol into sustainable aviation fuel.”

World’s whitest paint now thinner than ever, ideal for vehicles

Read the full story from Purdue University.

The world’s whitest paint – seen in this year’s edition of Guinness World Records and “The Late Show With Stephen Colbert” – keeps surfaces so cool that it could reduce the need for air conditioning. Now the Purdue University researchers who created the paint have developed a new formulation that is thinner and lighter – ideal for radiating heat away from cars, trains and airplanes.

Air Company launches sustainable aviation fuel made from captured CO2

Read the full story at Environment + Energy Leader.

At a time when sustainable travel has increasingly come under the spotlight, and when airlines are experimenting with the use of sustainable aviation fuel, one company has launch an aviation fuel that it says will have significant long-term implications. Air Company, a carbon technology company that creates carbon-negative alcohols and fuels from carbon dioxide (CO2), has launched a sustainable aviation fuel (SAF) made from captured CO2.

Inspiration from nature: New ways to make flying more efficient and renewable

Read the full story at Aerotime Hub.

Right from the very first days of flying, when Otto Lilienthal studied the flight of birds to design his first gliders, the world of aviation has taken inspiration from nature.  

Now with an increasing focus on ways to make flying more efficient to reduce emissions, manufacturers and designers are copying tricks from the natural world. 

Shark-skin technology lets planes fly fast with less fuel

Read the full story from Bloomberg.

Earlier this year, a Lufthansa Group Boeing 747-400 flying on the carrier’s international route of networks in Asia sported an unusual covering on its underside. Attached to portions of the craft’s lower fuselage and belly fairing was a thin film-like coating imprinted with a ribbed texture of small protrusions, each about 50 micrometers high. The riblets on the surface of the film, dubbed AeroSHARK, are designed to reduce friction between the aircraft’s surface and the air around it in a bid to cut fuel consumption and lower carbon emissions.

The film, inspired by shark skin and its well-known ability to reduce drag in water, is a prime example of what’s known as biomimicry. But it’s more than that. AeroSHARK is also an example of the measures the airline industry is willing to take amid a heightened focus on the industry’s contributions to anthropogenic greenhouse-gases. Before the Covid-19 pandemic, traveling by air contributed about 2.5% of greenhouse gases. With travel bouncing back and the industry pledging to cut emissions to zero, the pressure is on to eke out any way possible to make flying greener. 

Shell’s new plan to bolster sustainable aviation fuel

Read the full story at GreenBiz.

Sustainable aviation fuel is one potential path airline’s can travel to mitigate aviation’s impact on the climate crisis. Shell is hoping to lead the charge for cleaner business travel.

First-of-its-kind solar tower brews jet fuel from water and CO2

Read the full story in Anthropocene Magazine.

Using sunlight, along with carbon dioxide and water vapor captured from air, a new solar tower can produce kerosene suitable for fueling airplanes. The system, details of which have been published in the journal Joule, is the first to be successfully demonstrated in the field at a large scale.

Alaska Airlines makes significant investment in sustainable aviation fuel

Read the full story at Environment + Energy Leader.

Alaska Airlines announced today it has finalized an agreement with biofuel company Gevo Inc., to purchase its most significant sustainable aviation fuel (SAF) offtake commitment to date – 185 million gallons of SAF over five years starting in 2026. This agreement was developed alongside others in the oneworld alliance.