Can lime affect the decomposition of organic matter and reduce emissions of the greenhouse gas methane from cattle manure? (Photo: Sissel Hansen)
Can lime affect the decomposition of organic matter and reduce emissions of the greenhouse gas methane from cattle manure? (Photo: Sissel Hansen)

Can lime reduce greenhouse gas emissions from cattle manure?

At Cal-Me, we investigate how adding specific lime products to soft cattle manure affects the breakdown of organic matter and the release of methane (CH4).

Previous experiments show promising results

Results from previous projects indicate that there are lower emissions of methane from cattle slurry storage on dairy farms where a certain type of lime is regularly added to the fertilizer. It has also been identified that lime can increase the breakdown of lignin and thus increase gas yield from biogas plants.

Verifying climate benefits with new experiments

The project starts by verifying results from previous studies in an incubation experiment and investigating whether the addition of lime products can be used to:

  • Reduce methane emissions from stored wet manure and increase biogas yield when the manure is used in biogas plants.
  • Compare different lime products with a control group without additions.
  • Examine how the chemical and biological composition of cattle manure changes during decomposition and whether we can identify bacteria that convert methane into carbon dioxide (methane is significantly more potent as a greenhouse gas).

Further on

Findings from this project will provide a basis for further investigations and projects related to: What reduces CH4 emissions from cow manure and what increases biogas production? What properties of CaCO3 products can maximize the effect of the processes in question?

Potential benefits for agriculture and climate

If we succeed in reproducing positive climate effects, this forms the basis for developing lime products and methods that reduce CH4 emissions as well as increasing biogas production. These solutions are likely to be easily scalable for use throughout animal-based agriculture.

Use of cookies / Cookies policy

This site uses cookies to offer you a better browsing experience and improve your use of the website. We also measure and analyze usage patterns and engagement for a better understanding of how our services are used.

Acceptance applies to all pages with x in the address. Read more about the use of cookies in our privacy statement. privacy statement

Essential cookies

Essential cookies ensure basic functions such as page navigation and access to secure areas of the website. The website cannot function optimally without these essential cookies, and they are strictly necessary to provide an online service.

Enabling cookies helps you fill out forms effectively on our website. For example, cookies help prevent the same user from submitting the same form multiple times. The information is deleted from the browse after 90 days.

The cookies assess and help us understand how visitors interact with our website. The statistics and information gathered are anonymised.

We use marketing cookies to display content and ads that are relevant and engaging for our visitors.