Posts Tagged ‘nitrogen’
“The earth is bountiful, and where her bounty fails, nitrogen drawn from the air will refertilize her womb.”*…
As the Iran War continues to unfold, there is understandably a great deal of concern about energy prices (and the prices of things that depend on energy). We might forget that the Middle East is also crucial to the world’s fertilizer supply– though not for long, as farmers (along with everyone else in the food chain, all the way down to all of us eaters) are beginning to feel the pain.
But, as Diana Kruzman reports, even as fertilizer trade concerns are growing, a revolutionary sourcing alternative has emerged– one that could make a huge positive difference if it proves out at scale…
The world has an almost insatiable demand for nitrogen. Crops need it to grow, but although it makes up 78 percent of our atmosphere, plants can’t just pull it in from the air the way they do with oxygen. Instead, they rely on bacteria in the soil to convert it into nitrate, a form they can use; in the case of agriculture, think of fertilizer spread by humans. Leaving aside organic options like cow manure, most farmers use ammonia produced mainly from natural gas using a technique called the Haber-Bosch process, which was invented in 1909. [See also here.]
Haber-Bosch is expensive and energy-intensive, responsible for up to two percent of the world’s annual greenhouse gas emissions. It’s also spurred a global nitrogen pollution crisis; as much as two-thirds of nitrogen fertilizer applied to crops is never used, and the excess escapes into the soil, air, and water, raising the cancer risk in nearby communities and contributing to climate change.
Researchers have been trying to find an alternative way to get nitrogen to plants for decades — turning to everything from microbes to human urine. But so far, these scientific advancements haven’t translated into much practical change for farmers, who for the most part still rely on ammonia (which, granted, is getting greener, but is increasingly vulnerable to global price shocks).
That could soon change with the growth in popularity of a new technology known as plasma activated water, or PAW. Around the U.S., scientists and startups are experimenting with this high-tech solution, which uses electricity to pull nitrogen from the air, mix it with water, and create fertilizer straight on the farm. The concept, on the surface, seems suspiciously rosy — on-demand nitrogen, in a form plants can use, at just the cost of electricity (and the initial price of the machine used to make it). But early adopters have told Offrange that it genuinely works…
… PAW uses electricity to transform air into plasma — the fourth state of matter (besides gases, solids, and liquids), which typically forms at high temperatures. When the plasma comes into contact with water, it encourages chemical reactions that form nitrates — the type of nitrogen that plants need. Though this process was actually invented in 1903, even before Haber-Bosch, it required so much energy that it never achieved widespread use.
But in recent years, those energy needs have gone down thanks to the development of “cold plasma” technology, which operates at less than 60 degrees Fahrenheit. It’s also used for medical sterilization and food safety, and over the last decade researchers have worked to develop new ways to apply it for agricultural production…
More at: “Pulling Nitrogen From the Air” from @dkruzman.bsky.social.
* Nikola Tesla (who, around 1900, imagined and experimented with something like the Birkeland–Eyde-based plasma process described above)
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As we count on creativity, we might send healthy birthday greetings to a man who explained one of the central ways in which we depend on the food that we eat, William Cumming Rose; he was born on this date in 1887. A biochemist, he researched amino acids, discovered threonine, and established the importance of the nine essential amino acids in human nutrition (that’s to say, the amino acids that our bodies cannot synthesize and that we must consume in our food). He received the National Medal of Science in 1966.
“Food is simply sunlight in cold storage”*…
Increasingly, as Patrick Sisson explains, that’s literally true…
If you had to identify a specific type of real estate that has seen its value increase because of changing consumer eating habits, global demographic shifts, worldwide pandemic preparedness, and US export policy — while its importance to reducing global carbon emissions and adapting to climate change rise in tandem — refrigerated warehouses may not be your first pick.
But there’s a strong case to be made that the expansion and evolution of the cold-storage industry — often called the “cold chain” — will play a significant role in energy, environmental, and economic news in the 21st century. Cold storage facilities aren’t fun places to visit; some are kept so frigid, at minus 50 degrees Fahrenheit, that the workers who toil in these windowless spaces rotate in 15-minute shifts, despite their heavy protective gear…
… refrigerated warehouses are great to build and own. Investors and developers expect 8 to 10% annual growth in this specialized real estate, according to Adam Thocher, SVP of Global Programs and Insights at the Global Cold Chain Alliance (GCCA). That’s made it a profitable real-estate niche…
The ability to more easily cool and freeze food for storage, preparation, and distribution has revolutionized grocery shelves, home cooking, and restaurants for decades, and will continue to do so for years because it taps into every trend all at once. Growing fast-casual restaurant chains, last-mile delivery, a surging global middle class seeking more protein, and the explosion in healthy, organic produce and industrialized frozen food, all need cold storage…
The pandemic accelerated these trends, spiking frozen-food sales in the US to over $74 billion in 2023, a $10 billion increase in just three years, and leading to a wave of refrigerator purchases by Chinese consumers. The need to refrigerate Covid vaccines underscored how important these sites are to global health. Even Ozempic and similar blockbuster anti-obesity drugs need to be stored at 46 degrees F. And the rest of the world is increasingly asking why, if you can always get a Granny Smith apple in New York, can’t you get one in Beijing or London?…
The GCCA estimates there is at least 7.4 billion cubic feet of cold storage worldwide, and 3.7 billion in the US alone, but that’s a vast understatement, Thocher said. The alliance only looks at partial data from 92 countries (not including China) and governments tend to be cagey about sharing his kind of data because of economic and food-security concerns, since these sites are crucial parts of food infrastructure and can reveal levels of economic activity…
Food security has become a global challenge with a growing population, Peters said, especially since roughly 30% of global food production is lost, making increasing supply and reducing food waste imperative. That’s extremely tricky when the critical loss of arable land and desertification, due to climate change, strengthens the case for cold-storage warehouses, which, because of their vast energy use, contribute to that very problem. A 2023 Columbia University study found the sector responsible for 3.5% of total global emissions. The cold-storage industry has responded with more energy-efficient designs and less harmful ammonia-based refrigerants, but it adds an additional challenge to efforts to ramp up sustainable energy production.
“This is a real system-level challenge, a wicked problem,” [Toby Peters, professor of the cold economy at the UK’s Birmingham Energy Institute] said. “My exam question is, how do we feed 9 billion people while economically empowering 400 million small farmers, all without using diesel?”…
Diets, demographics, desertification are all fueling “The Hot Business of Cold Storage,” by @patrickcsisson in @sherwood_news.
* John Harvey Kellogg
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As we chill, we might recall that it was on this date in 1903 that Carl von Linde received two U.S. patents for his Linde oxygen process and associated equipment (Nos. 728,173 and 727,650). Linde had already invented the first industrial-scale air separation and gas liquefaction processes, which led to the first reliable and efficient compressed-ammonia refrigerator (in 1876).
In 1901, Linde had began work on a technique to obtain pure oxygen and nitrogen based on the fractional distillation of liquefied air. His 1903 patents were steps in that direction.
Linde founded a company to commercialize access to these pure gases. Now known as Linde plc (but formerly known variously as the Linde division of Union Carbide, Linde, Linde Air Products, and Praxair), it has become the world’s largest producer of industrial gases– and ushered in the creation of the global supply chain for industrial gases that serves the global cold chain.
“Most things are never meant”*…
Protein-packed diets add excess nitrogen to the environment through urine, rivaling pollution from agricultural fertilizers…
In the U.S., people eat more protein than they need to. And though it might not be bad for human health, this excess does pose a problem for the country’s waterways. The nation’s wastewater is laden with the leftovers from protein digestion: nitrogen compounds that can feed toxic algal blooms and pollute the air and drinking water. This source of nitrogen pollution even rivals that from fertilizers washed off of fields growing food crops, new research suggests.
When we overconsume protein—whether it comes from lentils, supplements or steak—our body breaks the excess down into urea, a nitrogen-containing compound that exits the body via urine and ultimately ends up in sewage… the majority of nitrogen pollution present in wastewater—some 67 to 100 percent—is a by-product of what people consume…
Once it enters the environment, the nitrogen in urea can trigger a spectrum of ecological impacts known as the “nitrogen cascade.” Under certain chemical conditions, and in the presence of particular microbes, urea can break down to form gases of oxidized nitrogen. These gases reach the atmosphere, where nitrous oxide (N2O) can contribute to warming via the greenhouse effect and nitrogen oxides (NOx) can cause acid rain. Other times, algae and cyanobacteria, photosynthetic bacteria also called blue-green algae, feed on urea directly. The nitrogen helps them grow much faster than they would normally, clogging vital water supplies with blooms that can produce toxins that are harmful to humans, other animals and plants. And when the algae eventually die, the problem is not over. Microorganisms that feast on dead algae use up oxygen in the water, leading to “dead zones,” where many aquatic species simply cannot survive, in rivers, lakes and oceans. Blooms from Puget Sound to Tampa, Fla., have caused large fish die-offs…
If it’s not one thing, it’s another: “Eating Too Much Protein Makes Pee a Problem Pollutant in the U.S.,” from Sasha Warren (@space_for_sasha) in @sciam.
* Philip Larkin, “Going, Going” (in High Windows)
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As we deliberate on our diets, we might recall that it was on this date in 1888 that Theophilus Van Kannel received a patent for the revolving door, a design that came to characterize the entrances of (then-proliferating) skyscrapers and that earned him induction into the National Inventors Hall of Fame. But lest we think him “all work,” his other notable invention was the popular (at least in the early 20th century) amusement park ride “Witching Waves.”
“The longer I live the greater is my respect for manure in all its forms”*…
Two crucial and interconnected resources—human feces and arable soil—face crises of mismanagement…
… the problem of how to deal with our “dark matter” has plagued humanity for millennia. As soon as people stopped moving around in pursuit of prey, the stuff began to pile up. Neolithic farmers may have had no idea of germ theory, but they were smart enough to know they didn’t want to live next to—or on top of—their own shit. They dug pits or ditches out in their fields to serve as open-air toilets. As the number of people living in close quarters grew, pits no longer sufficed. People turned to more sophisticated waste-disposal methods, usually involving water.
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Sewage treatment plants… manage, by and large, to keep raw sewage out of waterways, and this has mostly eliminated outbreaks of cholera as well as typhoid. But the practice of washing nutrients down the drain remains as big an issue as ever.
Of all the nutrients we’re redistributing, probably the most significant is nitrogen. It’s difficult for plants—and, by extension, plant eaters—to obtain nitrogen. In the air, it exists in a form—N2—that most living things can’t utilize. For hundreds of millions of years, plants have relied on specialized bacteria that “fix” nitrogen into a compound they can make use of. When people started farming, they figured out that legume crops, which harbor nitrogen-fixing bacteria in nodules on their roots, replenish soil. Manure and human waste, or “night soil,” also provide nitrogen for plants.
When synthetic fertilizer was invented, in the early twentieth century, the world was suddenly awash in nitrogen. This enabled people to grow a lot more food, which, in turn, enabled them to produce a lot more people, who produced a lot more shit. Via our wastewater treatment plants, we now introduce vast quantities of nitrogen into coastal environments, where it’s wreaking havoc. (Fertilizer runoff also contributes to the problem.)
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Jo Handelsman, a plant pathologist who runs an interdisciplinary research center at the University of Wisconsin at Madison, is also interested in “dark matter.” Handelsman, however, uses the term to refer to soil. And the problem she’s concerned with is not that we have too much of the stuff, but too little. “The plight of the world’s soils is a silent crisis”… Agriculture requires rich soil, but most modern practices are, unfortunately, terrible for it…
From the estimable Elizabeth Kolbert (@ElizKolbert) and @nybooks: “The Waste Land.”
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As we go back to basics, we might recall that it was on this date in in 1874 that Lewis H. Latimer received his first patent (U.S. Patent 147,363), for an improved water-closet for railway cars.
Latimer went on to develop an improved process for manufacturing carbon filaments for light bulbs, to write the first book on electric lighting, and to invent an evaporative air conditioner, a forerunner of today’s systems.
“War is progress, peace is stagnation”*…
Even if one doesn’t share Hegel’s copacetic take on conflict, one can observe that wars do, in fact, usually encourage bursts of technological innovation. Indeed, most of us are pretty familiar (in both senses of the phrase) with the range of epoch-defining technologies that were a product of World War II: radar, radio navigation, rocketry, jet engines, penicillin, nuclear power, synthetic rubber, computers… the list goes on.
But we are perhaps a little less familiar with the advances– now so ingrained that we take them for granted– that emerged from World War I. Readers will recall one such breakthrough, and its author: Fritz Haber, who introduced chemical warfare (thus lengthening the war and contributing to millions of horrible deaths), then used some of the same techniques– nitrogen fixation, in particular– to make fertilizer widely and affordably available (thus feeding billions).
Five other key developments at “The 6 Most Surprising, Important Inventions From World War I.”
* Georg Wilhelm Friedrich Hegel
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As we look for the silver lining, we might that it was on this date in 1917, “Army Registration Day,” that the draft was (re-)instituted in the U.S. for World War I. Draft board selections were subsequently made, and conscription began on July 20.
These draft boards were localized and based their decisions on social class: the poorest were the most often conscripted because they were considered the most expendable at home. African-Americans in particular were often disproportionately drafted, though they generally were conscripted as laborers.
Young men registering for conscription during World War I in New York City, New York, on June 5, 1917.
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