Why Firms Are Racing To Produce Green Ammonia
The title of this post, is the same as that of this article on the BBC.
This is the sub-heading.
In the 19th Century, Europeans realised what the Inca had known long before. Bird droppings, or guano, made a fantastic fertiliser.
These are the first three paragraphs.
And so sprang up a gigantic industry dedicated to the harvesting of guano from Latin American bird colonies, where there were huge piles of the stuff.
It was so rich in ammonia, the key ingredient, that a mere whiff could induce coughing and sneezing. Not exactly a pleasant cargo to ferry across the world.
As demand for fertiliser rose in the early 1900s, someone began to think, “Perhaps there’s another way?” That someone was Fritz Haber, a German chemist who, along with Carl Bosch, developed the Haber-Bosch process for synthesising ammonia.
This Wikipedia entry describes the Haber-Bosch process.
This is the first paragraph.
The Haber process, also called the Haber–Bosch process, is the main industrial procedure for the production of ammonia. The German chemists Fritz Haber and Carl Bosch developed it in the first decade of the 20th century. The process converts atmospheric nitrogen (N2) to ammonia (NH3) by a reaction with hydrogen (H2) using an iron metal catalyst under high temperatures and pressures. This reaction is slightly exothermic (i.e. it releases energy), meaning that the reaction is favoured at lower temperatures and higher pressures. It decreases entropy, complicating the process. Hydrogen is produced via steam reforming, followed by an iterative closed cycle to react hydrogen with nitrogen to produce ammonia.
These companies are mentioned in the BBC article.
Starfire Energy
This is their web site.
Their home page has a title of Modular, Variable-Rate Ammonia (NH3) Production and this description of their technology.
We are scaling up technologies to make and use carbon-free ammonia fuel. Rapid Ramp is a variable-rate ammonia production process engineered into a modular plant design. Prometheus Fire is a lower temperature, high flow ammonia cracking process that allows ammonia to be used like natural gas, but with no CO2 emissions.
According to the co-founder of the company, Starfire’s process can use intermittent power, like wind and solar.
Could a farmer make their own fertiliser with a containerised system and say a 5MW wind turbine or a small solar farm?
Atmonia
This is their web site.
This description of their process is on their home page.
Atmonia is developing a nitrogen electrolyser with our patented catalyst. The technology uses only air, water and electricity for direct ammonia production. This enables zero carbon ammonia production, when applying renewable electricity.
Could a farmer make their own fertiliser with a containerised system and say a 5MW wind turbine or a small solar farm?
Jupiter Ionics
This is their web site.
Their home page has an endless video and this statement.
We’re commercialising carbon-neutral, electrochemical technology for sustainable agriculture, ammonia-fuelled transport and renewable energy exports.
These three paragraphs in the BBC article, say more about the process used by Jupiter Ionics.
Jupiter Ionics is currently planning to build an ammonia production module on the megawatt scale, which could produce a tonne per day.
Jupiter Ionics’ technology differs from Starfire Energy and Atmonia’s in that it uses lithium as a mediator to break apart nitrogen molecules, which naturally exist as strongly bonded pairs of nitrogen atoms, to form lithium nitride. This then reacts with hydrogen to make the ammonia.
Within the next 12-18 months, Jupiter Ionics aims to scale up its equipment so that it can produce a kilogram of ammonia per day. A grape farmer in the state of Victoria who has solar panels on his land is hoping to trial the system, says Prof MacFarlane.
It appears that Starfire Energy, Atmonia and Jupiter have containerised systems, that can take air, water and electricity and can create sizeable quantities of ammonia for fertiliser or a fuel.
This page on the Ammonia Energy Association web site is entitled Amogy: Ammonia-Powered Tractor, where this is said, alongside a picture of a standard John Deere tractor.
Earlier this month, Amogy demonstrated a new ammonia-powered tractor in Stony Brook, New York. A 100 kW ammonia-to-power system was successfully integrated into a John Deere mid-size standard tractor, which can operate on liquid ammonia fuel for a period of several hours. The tractor conversion demonstration was made possible by significant seed funding secured in late 2021.
The unique system is comprised of a standard liquid-storage tank and highly efficient ammonia-cracking modules integrated into a hybrid fuel cell system, which can provide consistent primary power for several hours per refueling. Therefore, the pioneering vehicle maintains the functionality and duration requirements operators rely on to support farming tasks, which has never been offered with other alternative energy solutions. The ammonia-powered tractor was driven for separate periods, with a refueling session in between. Refueling a tractor with liquid ammonia is fast and simple, similar to gas or diesel refueling.
This is Amogy’s web site.
I can also see a problem, if every farmer of a certain size wants to make their own ammonia for both fertiliser and fuel.
The NIMBYs will have a field day, but at least the countryside’s low-life won’t be nicking your diesel.
Nitricity
The BBC article also talks about Nitricity.
As Josh McEnaney, president and chief executive of Nitricity in the US, explains, spreading ammonia on fields results in greenhouse gas emissions that could be avoided if we took a more direct approach to applying nitrogen, the crucial element that promotes plant growth, to the soil.
His company is developing a system that uses solar-powered plasma cells to fix nitrogen from the air. This is then used to make nitric acid, which can be applied to the soil. Early experiments with tomato plants yielded success and the company is now trialling its technology with suppliers for the US fast food chain Chipotle.
“We don’t require any hydrogen production,” says Dr McEnaney. “We go straight for the fertiliser.”
This is the Nitricity web site.
Two Experts Give Their Views
The BBC article finishes with the views of two experts.
Bill David at the University of Oxford points out that, around the world, there is already lots of infrastructure designed to store and transport ammonia.
He praises large projects for manufacturing ammonia using renewable energy, such as the one in Uzbekistan that will reportedly spew out 454,000 tonnes of ammonia per year with the help of 2.4 gigawatts of wind energy.
While ammonia can be used as a fuel, it can also be cracked to release hydrogen, which may itself be burned as a fuel, points out Lindsey Motlow, senior research associate at Darcy Partners, a technology firm that works with the oil and gas industry.
“We’re seeing real progress in [the] development of ammonia cracking technology,” she says.
Conclusion
According to the BBC article, two percent of the carbon dioxide emitted on the planet comes from the creation of fertiliser.
So it looks like we can either fry or starve, if we don’t address the problem of zero-carbon fertiliser.
But the downside could be every farm having its own wind turbine.
The BBC article and the related web sites are a must-read.
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