Looking for a specific product?

Make a search for products & suppliers, articles & news.

Nitrous oxide emissions are no laughing matter

While many are acquainted with the problems caused by CO¬¬2 emissions, the harmful effects of the release of nitrous oxide into the atmosphere have been far less well known. Only in recent years has the international scientific community begun to understand the scope of the threat posed by N2O emissions.

Biological fuel among the culprits

Emissions of nitrous oxide have evolved into a big problem following the boom in the production of biological fuels – considered an effective measure against global warming.

Photo: Peter Dörsch Ph.D. student Shahid Nadeem doing field work. (Photo: Peter Dörsch)

“Biological fuels are produced as an alternative fuel, intended to replace the burning of oil and gas and thereby reduce global warming. However, since the plants used in the production of biological fuels require fertiliser we cannot eliminate the emission of nitrous oxide; it is a by-product of the process,” explains Professor Lars Bakken, a group leader with the Nitrogen Group at the University of Life Sciences (UMB) in Ås, Norway.

“The end result is more or less zero gain,” he adds. “Nitrous oxide actually tips the balance in the direction of greater warming, undermining the promise of biological fuels as a means to effect cooling.”

Part of a large international environment

Thanks to the projects being carried out at UMB, Norway has become a key player in international research on nitrous oxide.

“Emissions of nitrous oxide represent a global problem, one that may become especially acute in rapidly developing countries like China. We need to pool our resources to come up with the best solutions,” says researcher Peter Dörsch, another of the Nitrogen Group’s three group leaders.

Photo: Håkon Sparre, UMB Åsa Frostegård, Peter Dörsch and Lars Bakken are the three group leaders of the UMB Nitrogen Group. leder UMB Nitrogen Group. (Photo: Håkon Sparre, UMB)

“Dynamic nitrogen research groups in the Nordic region and the rest of Europe are at the forefront of this area. Norway is working in close cooperation with Canada and the US – longtime leaders of this effort. We expect our colleagues in China to overtake us for good in about ten years,” Mr Dörsch adds.

The UMB Nitrogen Group has already established fruitful collaborative efforts with many leading universities in China.

A widespread problem in China

The Chinese authorities are very focused on securing their country’s food supply, and therefore provide subsidies for nitrogen-based fertilisers. This increases the use of nitrogen in farming and results in acidification of the soil. Cultivated fields are a direct source of nitrous oxide emissions. Moreover, a considerable amount of the nitrogen from fertiliser evaporates into ammonia, which later spills down onto surrounding forests as acid rain.

“The amount of nitrous oxide emissions from China is going to escalate in coming years,” states Lars Bakken.

The research group in Ås is currently engaged in a bilateral collaboration project with China. The project is funded under the Sustainable Innovation in Food and Bio-based Industries (BIONAER) programme of the Research Council of Norway.

Photo: The Research Council of Norway The research clearly illustrates how relatively basic research can lead to solutions that are targeted towards specific challenges,” said Kirsti Anker Nilssen, Senior Adviser of the BIONÆR programme. (Photo: The Research Council of Norway) Norway in the lead

“The Chinese have wonderfully talented researchers currently using the robotised incubation systems we developed here in Norway,” explains the third group leader, Åsa Frostegård.

YARA, the Norwegian world leading fertiliser producer, is also involved in the cooperation with the Chinese universities. YARA seeks to gain greater insight into how nitrous oxide is formed with an eye towards future product development.

“The sheer scale of the collaboration increases the likelihood of our success,” says Dr Joachim Lammel, Head of Product and Application R & D at YARA.

“The UMB Nitrogen Group is a first-rate example of how a small country can be perfectly capable of performing cutting-edge research at the global level. Their research also clearly illustrates how relatively basic research can lead to solutions that are targeted towards specific challenges,” said Kirsti Anker Nilssen, Senior Adviser of the BIONÆR programme.

Working with pH

The Nitrogen Group is about to publish a study of soil-acidification and the release of nitrous oxide from fields in Nepal and China. They have shown that the enzyme used by bacteria to process nitrous oxide into “harmless” nitrogen gas does not work at a low pH.

“In developing nations such as China, intensive cultivation of the soil can lead pH levels to fall. We are fairly certain that this will bump up emissions of nitrous oxide. Our study adds to the body of evidence attesting to the significance of the Earth’s acidity level on the environment, says Professor Frostegård.

“We have carried out extended tests as part of our research, experimenting with agricultural lime in China to see what the result would be,” Professor Bakken eagerly relates. At the same time, he stresses that there are even better alternatives to agricultural lime for decreasing the Earth’s pH value. 

Facts

Nitrous oxide (Laughing gas) is a powerful greenhouse gas, 1 kg nitrous oxide (N2O) in the atmosphere contributes to global warming as much as 300 kg carbon dioxide (CO2).

Problems with nitrous oxide arise from agricultural activity because mineral fertiliser is necessary to boost yields.

Mineral fertiliser is produced by collecting nitrogen from the air. Use of organic fertilisers also results in emissions of nitrous oxide.

Norwegian agriculture is currently responsible for 10 per cent of Norway’s greenhouse gas emissions and approximately fifty per cent of nitrous oxide emissions.


 

 

Related news

Latest news

TechnipFMC named top Petroleum International Contractor by ENR

This accomplishment places us in front of companies such as Petrofac,

The world’s energy demand will peak in 2035 prompting a reshaping of energy investment

The electrification trend is already enveloping the automotive industry.

DNV GL launches revised design standard and new certification guideline for floating wind turbines

The role of offshore wind, including floating offshore wind energy, 

Green Corridor JIP delivers innovative bulk carrier designs for a low emissions future

When the IMO confirmed the 2020 deadline for the 0.5 per cent global sulphur cap in 2016, 

DNV GL launches Operations & Analytics Centre in India to enable 24/7 monitoring for renewable assets globally

The new global monitoring centre is especially significant to independent power providers, 

DNV GL awards AiP to Jiangnan Shipyard for 93K cbm very large ethane carrier design “PANDA E”

The flexible, efficient and environmentally friendly design was developed by Jiangnan Shipyard in cooperation with GTT,

DNV GL starts phase II of project to examine the impact of phase-contamination on oil flow meters

Accurate measurement of the production of oil fields is an important means ...

Important message at the “AKVAculture Day”

We won’t be able to create growth unless we can handle the industry’s challenges.

Visit from the Ministry of Trade Industry and Fisheries

The Ministry visited in order to learn more about the industry.