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A flight powered by cooking oil has taken place in the UK for the first time.
The RAF Voyager, the military equivalent of an Airbus A330, took off and landed from RAF Brize Norton in Oxfordshire on Wednesday.
The Royal Air Force (RAF) hopes sustainable aviation fuels will help it reach net-zero by 2040 and reduce its reliance on global supply chains.
The 90-minute flight over Oxfordshire was also the first time a military aircraft of such size has used a fully sustainable fuel.
Source BBC
Algae biofuel stakeholders have been stuck in the doldrums for years, but in an odd twist of fate, the fossil fuel industry could help algae make a comeback. Apparently the new plan is to pair algae farming with waste carbon from gas power plants and other industrial operations. In addition to biofuel, algae farming can also produce animal feed, fish food, nutritional supplements and toiletries for people, and bioplastic products.
Why Algae Biofuel?
CleanTechnica spilled plenty of ink on the area of algae biofuel research some years ago, during the Obama administration. Unlike other energy crops, algae can be grown in ponds or human-made structures without taking arable land out of circulation, and it has a rapid growth-to-harvest cycle. The high oil content of certain strains of algae is another leading attraction, and the algae R&D pathway can lead in a carbon negative direction.
On the down side, figuring out an economical way to cultivate algae and extract the oil at an industrial scale is a challenging endeavor, especially when the over-arching goal is to reduce carbon emissions rather than adding them.
The picture was looking bright in the early 2000s, up through the Obama administration. However, by the time former President Obama left office in 2016, oil prices were crashing. The relatively low cost of petroleum seemed to put the idea of a bioeconomy fueled by algae biofuel to bed.
Nevertheless, the Energy Department’s National Renewable Energy Laboratory was among those continuing to invest in algae research projects, and the algae field continued to branch off into new angles. In 2018, for example, the Energy Department was funding the algae bioplastics angle. In 2020 researchers were exploring the idea of hooking up with high speed 3-D printing. The Mars mission has also sparked a new burst of interest in the algae biofuel field.
Carbon Capture To The Rescue
In January of this year the Energy Department’s Bioenergy Technologies Office (BETO) launched the new AlgaePrize competition for students, aimed at developing “the next generation of bioeconomy professionals by expanding novel solutions to production, processing, and new product development on the way to gigaton-scale algae commercialization for fuel, food, products, and carbon dioxide utilization/sequestration.”
If you caught that thing about carbon dioxide, that’s where the happy dance for natural gas stakeholders comes in. Carbon capture from flue gas could turn out to be a value-added element that improves the bottom line for algae farming.
That’s where BETO seems to be heading. Last week the office announced a $16.5 million round of funding for six algae projects related to carbon dioxide capture.
The six projects were selected for their potential to demonstrate an improvement in carbon capture by algal systems leading to biofuels and other products, while also cutting costs and decreasing overall greenhouse gas emissions.
“Algae can grow on waste CO2, functioning as a carbon sink. This algae biomass can then be used to create low or no-emissions biofuels and bioproducts which displace GHGs,” BETO noted.
Natural Gas Hearts Algae Biofuel
Not all six of the new BETO-funded projects are focusing on carbon captured from flue gas. The Colorado School of Mines, for example, plans to put its pond-grown algae system through its paces using concentrated carbon dioxide from direct air capture.
Another awardee, Colorado State University, is working on an algal system that functions efficiently on atmospheric carbon.
Three of the other awardees are focusing on carbon dioxide from industrial fossil energy users including power plants: Dioxide Materials, MicroBio Engineering, and the University of Maryland’s Center for Environmental Sciences. A fourth awardee in the point source class is Global Algae Innovations, which is focusing more specifically on flue gas from a naphtha-fired power plant.
If the biofuel angle doesn’t work out at commercial scale, other aspects of the algae biofuel market could come into play.
Market analysts are forecasting growth in the algae market in the coming years. Consumers are on the prowl for healthy diet supplements, especially among the up-and-coming generation.
“Rise in the acceptance of algae-based food products and a growing popularity of vegan food are expected to emerge as trends in the algae market. Algae are already widely employed in bioplastics, cosmetics, food, bio-packaging, biofuel, and pharmaceutical and nutraceutical products,” observes the firm Transparency Market Research.
The Long Algae Biofuel Game Of ExxonMobil
All this activity puts the on-again, off-again algae biofuel journey of ExxonMobil into perspective.
ExxonMobil spearheaded the charge into shale gas after the Bush Administration lifted Clean Water Act regulations in 2006, and the company continued to double down on gas acquisitions even as prices plummeted.
Next Steps For Algae
ExxonMobil, for one, is excited. The company lists the following benefits compared to corn ethanol and other biofuels made from land-based energy crops:
Unlike making ethanol and biodiesel, producing algae does not compete with sources of food, rendering the food-vs.-fuel quandary a moot point.
Because algae can be produced in brackish water, including seawater, its production will not strain freshwater resources the way ethanol does.
Algae consume CO2, and on a life-cycle basis have a much lower emissions profile than corn ethanol given the energy used to make fertilizer, distill the ethanol, and to farm and transport the latter.
Algae can yield more biofuel per acre than plant-based biofuels – currently about 1,500 gallons of fuel per acre, per year. That’s almost five times more fuel per acre than from sugar cane or corn.
That’s all well and good, but it’s about time for ExxonMobil and other fossil energy stakeholders to stop digging more carbon up from the ground and start taking giant steps towards a more sustainable energy profile.
Capturing carbon dioxide at power plants is a step in the right direction, but it doesn’t change anything in terms of the local environmental impacts of fossil energy extraction, and it doesn’t make a dent in the amount of fugitive emissions escaping from drilling sites, transportation networks and storage facilities.
To the extent that algae farming at gas power plants enables more gas extraction, it’s just another form of greenhouse gas whack-a-mole.
Either way, it looks like algae farming at power plants has a window of opportunity. Last November ExxonMobil re-upped its collaboration with Synthetic Genomics, under the new name of Viridos. If you have any thoughts about that, drop us a note in the comment thread.
Source CleanTechnica
Tonnes of food scraps collected from restaurants and supermarkets are being converted into electricity under a green energy initiative powering thousands of homes in Perth.
The City of Cockburn has made the waste to energy service a permanent fixture of its general duties, collecting rotting food waste from local businesses and feeding it to a mechanical ‘stomach’ at a nearby fertiliser plant.
The anaerobic digester heats the food, traps its methane gas and feeds the energy into the electricity grid, powering up to 3,000 homes.
“Food waste really shouldn’t be thought of as a waste, it should be thought of as a resource,” said the city’s waste education officer, Clare Courtauld.
“It’s really important to take food waste out of landfill because it produces harmful greenhouse gases.
“If global food waste was a country, it would actually be the third-highest greenhouse gas emitter in the world.”
Ms Courtauld said the City had so far recycled 43 tonnes of food waste and saved 81,000 kilograms of CO2 equivalent gasses that would have otherwise entered the atmosphere rotting in landfill.
The $8 million mechanical stomach sits at the Jandakot headquarters of fertiliser company RichGro.
It was the first bio-waste plant of its kind to operate in the southern hemisphere when it opened in 2016.
“Their trucks come in … they tip off the food waste.
“It then goes through a piece of machinery which removes any packaging that might be in with the food waste and any contamination.
“It pulps the food waste up into like a porridge consistency and doses it into a big tank.
“This tank then feeds the two digesters … they’re getting fed 24 hours a day.
“As it breaks down, it generates methane gas. We’re capturing that gas and we’re running large generators that combined can produce up to 2.4 megawatts of electricity.”
The plant powers the company’s entire operations and up to 3,000 neighbouring homes, all from food waste.
“Out the back end comes a liquid that is actually certified organic as a liquid fertilizer,” Mr Richards said.
“We sell a percentage of that to farmers and the remaining percentage of it we add into our compost piles.”
Some foods are better than others.
“Certainly, you can overdo a good thing — you wouldn’t want too much fats, oils and greases.
“A lot of fruit and vege, starchy, sugary products are good. They produce a lot of energy.”
The City’s waste manager, Lyall Davieson, said there was community appetite for these sorts of initiatives.
“I’ve been in waste for about 25 years,” he said.
“Not so long ago, all we could really do was just recycle a few cans and a bit of steel.
“But now we really have at our disposal lots of options to divert waste from landfill and to recycle.”
Frank Scarvaci, who owns a longstanding independent supermarket in Hamilton Hill, was one of the first businesses to sign up for the service.
He said it was a natural progression for his grocery store after embracing a plastic bag ban and installing solar power.
“I’ve been surprised [at] how the community has accepted the change,” he said.
“I thought [there] was going to be much more resistance in regards to when they scrapped plastic bags, for example — but there was virtually no resistance at all.”
While common in Europe, the plant is just one of a few of its kind to be built in Australia.
The City of Cockburn said it was not a waste service it would expand to households, because the risk of contamination disrupting the process was too high.
“We do have a machine that does have a certain ability to remove a level of the contamination,” Mr Richards said.
“Can it remove everything? No, it can’t.
“We’ve even had bowling balls come through — you can’t process things like that, in a system like this. It does damage our machinery.”
The bio-energy technology is growing in Australia, with the next logical step in the process to convert the bio-waste into biomethane, which could be fed into the gas grid.
The Federal Government is co-funding a biomethane production facility at a wastewater treatment plant in Sydney’s southern suburbs.
Once online in 2022, the $14 million plant is expected to pump biomethane derived from biogas created by a similar ‘mechanical stomach’ that would meet the gas needs of more than 13,000 homes.
Source ABC News Australia
