What Is Diesel Exhaust Fluid Made From?

If you’re new to owning a diesel vehicle or heavy equipment, you should be aware of a key additive. Diesel Exhaust Fluid is what it’s called (DEF). Aqueous urea solution 32 percent, or AUS 32, is another name for this ingredient. 32.5 percent urea and 67.5 percent de-ionized water are used to make it. Continue reading to learn everything you need to know about DEF.

The Environmental Protection Agency (EPA) mandated that diesel engines cut their emissions of nitrogen oxides (NOx) in 2010. Diesel Exhaust Fluid, an additive, is used to achieve this reduction (DEF).

This fluid helps to reduce NOx emissions and pollution in the air. As a result, it aids heavy machinery and trucks in adhering to federal pollution standards. Heavy-duty diesel trucks and equipment have featured a diesel tank and a separate diesel exhaust fluid tank since 2010.

Is DEF fluid made from urine?

Because urine is not made of diesel exhaust fluid, urinating in your SCR system will result in you having to pay a lot of money to clean and replace engine components once they’ve been contaminated. Following the deductive premise that urine contains urea and so urine + water = DEF is 100 percent incorrect and will result in a slew of costly mechanical issues. In either urea or water, the urea contained at urine is neither in the proper concentration for DEF, nor is it of sufficient purity. To summarize, urine and DEF equals Never. REMEMBER NOT TO PEE IN YOUR DEFENSE TANK!

Is DEF fluid made from pig urine?

That’s why, starting in 2010, all diesel trucks were required to have systems dedicated to putting DEF to use. Diesel Exhaust Fluid, which is made up of 32.5 percent urea and 67.5 percent de-ionized water, is sprayed into a vehicle’s exhaust system to aid in the breakdown of NOx emissions, converting them to harmless nitrogen and water. If you’re thinking to yourself, “Urea is a type of urea. You’re on the right brainwave if that sounds oddly like ‘urine.’ When a body metabolizes protein, it produces urea, an organic molecule. (We do, in fact, excrete it as pee.) However, despite DEF’s moniker, “Diesel Exhaust Fluid is really constructed of commercial-grade urea—synthetic ammonia and carbon—and is referred to as “pig urine.”

To put it another way, the urea and water in DEF heat up and produce ammonia. The NOx emissions are subsequently neutralized as the ammonia breaks down. The tail pipe emits fewer harmful substances, allowing everyone to breathe a little better.

What are the ingredients of diesel exhaust fluid?

DEF is a diesel exhaust fluid that contains 32.5 percent urea and 67.5 percent deionized water. Urea is thought to be the first organic substance to be produced from inorganic chemicals, for those who enjoy trivia.

Unlike the relatively benign and inert N2, NOx produces a slew of difficulties when inhaled, including health concerns, the ability to convert to nitric acid, the ability to both build and destroy ozone, and a slew of other problems. As a result, less NOx in the atmosphere is a really positive thing, especially in the places where we live and work. To achieve this result, diesel engines require DEF.

Because gasoline and gasoline engines run cooler, they emit less NOx than diesel engines. Because lower operating temperatures for petrol/gasoline engines result in less pollution from NOx compounds, they do not require SCR to eliminate NOx in the exhaust.

What kind of urea is used in DEF fluid?

DEF (Diesel Exhaust Fluid) is made with automotive-grade urea, which is significantly purer than fertilizer urea. The Selective Catalytic Reduction (SCR) system will degrade if a lower-quality fertilizer, urea, is used, and the vehicle would eventually break down. It may also cause the sensors to believe the truck’s DEF tank is empty in the near term, triggering a de-rating event that reduces engine power and eventually prevents the engine from restarting.

Can I pee in DEF tank?

A local dealer paid Consumer Reports $317 to add 7.5 gallons of AdBlue in its Mercedes-Benz GL320 test car, with the fluid costing $32/gallon. Most dealers buy AdBlue in bulk (albeit 7.5 gallons in half-gallon bottles would only cost $116.25).

What if the motorist is in the middle of nowhere, miles away from the nearest dealer? Is it possible for him or her to supply some temporary urea in order to get the car to a dealer? The question arises due to the presence of 2 to 4% urea in human urine.

Unfortunately, the answer is “no.” Your pee is not the correct substance for a modern clean diesel automobile to recognize.

What happens if you pee in the DEF tank?

Despite certain similarities, DEF and pee are not the same thing. Some people believe you can pee in your DEF tank because of these similarities. Saving money is nice, but your tank should only contain DEF. DEF and urine are not interchangeable, and if you pee in your DEF tank, you could be looking at some expensive repairs.

Peeing in a DEF tank can destroy the filters and the entire SCR system if done too often due to the other compounds included in urine. The systems will also be unable to perform their function of reducing carbon emissions from diesel exhaust.

Using urine instead of certified DEF can harm the entire system, which can be costly to repair. The cost of replacing the filter alone, according to Freedom-CNG, can range from $2,500 to $5,000. The filter should be replaced every 200,000 miles, but if you urinate in your DEF tank, you’ll need to do it much sooner.

What kind of urine is DEF made from?

As a result, in an SCR-equipped car, the exhaust gas from the engine passes through a particle filter first, catching all of the soot and ash produced by burning a relatively dirty fuel. That eliminates the “rolling coal” feature of old diesel engines, which made them unpopular in the United States in the 1960s, 1970s, and 1980s.

The exhaust gas passes via a nozzle that sprays diesel exhaust fluid into the stream of gases after it passes through the particulate filter. DEF is created from deionized water and urea in its purest form. Yes, urea is found in urine — please stop laughing — but this is a refined form of the molecule that is primarily employed in agriculture as a fertilizer component.

The heated exhaust gas and DEF are then sent into the catalytic converter, where the urea in the DEF and the exhaust gas react with a range of metallic compounds to convert nitrogen dioxide and monoxide to nitrogen and water. Nitrogen is the most abundant element in the air we breathe and is completely safe for the environment. Water is just that: water.

This is certainly a simplified description of how SCR works, but other from the extra step of injecting urea into the exhaust stream, it’s very similar to how your gasoline-powered car’s catalytic converter works. To minimize emissions, most modern diesel engines employ SCR in conjunction with exhaust gas recirculation and a diesel particulate filter (DPF).

Exhaust gas recirculation, or EGR, is a typical procedure that reduces the quantity of unburned fuel in a vehicle’s exhaust fumes. It is utilized in nearly all current ICE engines. EGR has the disadvantage of reducing vehicle performance and fuel economy, as well as adding another complex system to an already complex machine.

As a result of EGR’s flaws, several firms are removing it from their engines and replacing it with somewhat more DEF to treat the exhaust gases, achieving similar results without sacrificing performance or efficiency.

Isn’t all of this appealing? SCR and DEF, on the other hand, are not universally seen as beneficial. I mean, you have to keep it filled all the time, right? Isn’t it also expensive? Nope. Every time you replace your oil, an usual tankful of DEF will need to be refilled. It’s also largely water, so it won’t break the bank. A 2.5-gallon pack of BlueDEF (as opposed to the stuff your dealer may sell) will put you back about $80.

How is DEF manufactured?

Yara has been a market leader since 1993, when we fought to establish an ISO standard for the manufacturing and distribution of Diesel Exhaust Fluid, laying forth standards to protect customers from low-quality Diesel Exhaust Fluid vendors.

Yara has partnered with and helped thousands of fleets of all sizes in their selection of Diesel Exhaust Fluid and DEF equipment since 2005 in Europe and 2010 in North America.

Rely on quality and a secure supply from Yara

You can rely on Yara for a reliable supply of DEF because we are the industry leader with the world’s largest DEF production capacity of 2,8 Mt per year.

Our DEF is made from a high-purity, virgin urea solution. Urea is synthesized from ammonia and CO2 (carbon dioxide), and Yara’s DEF is extracted directly as “hot melt” urea, which is manufactured in a different way than fertilizer grade urea.

This procedure is quality controlled to provide an exceptionally pure output that meets ISO 22241-1’s strict requirements. This implies you can trust Yara’s DEF to be of high quality and purity.

Yara maintains a global network of five DEF production sites to ensure that DEF is always available to you:

The largest DEF production capacity in the world

This assures a consistent and reliable supply of high-quality DEF to clients all around the world.

With a capacity of 17,500 m3 of DEF grade solution, our factory in Brunsbüttel, Germany, has the world’s largest production capacity and the world’s largest DEF storage tank. It has dedicated vessels that serve the North American market.

What chemical is in DEF?

DEFendalTM Diesel Exhaust Fluid is a DEF made up of two main ingredients: urea and deionized water (DI). (NH2)2CO is the chemical formula for urea, an organic molecule. Fertilizer, agriculture, and the pharmaceutical business all use urea.