Knowledge article · 18 October 2026

Nitrogen in the Netherlands: nature, climate and technical solutions

Reducing ammonia and greenhouse gases while recovering more value from manure requires an integrated approach. Distinguishing substances and effects helps identify suitable technical choices.

Klaas Hofstra · Adverio Waste Systems (AWS)

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Revised edition of the October 2025 paper. Sources checked on 18 October 2026. The RENURE discussion concerns the Netherlands.

Three questions that need separate answers

The Dutch nitrogen debate mainly concerns damage to sensitive ecosystems from ammonia (NH3) and nitrogen oxide (NOx) deposition. Air quality and climate also matter. These connected challenges need different indicators: deposition, air concentrations and greenhouse gas emissions. Atmospheric nitrogen (N2) must be distinguished from reactive nitrogen compounds. [1] [2] [4]

Nitrous oxide belongs in the climate assessment

Nitrous oxide (N2O) is a powerful greenhouse gas released through activities including fertilisation, manure management and wastewater treatment. NOx affects climate indirectly through processes such as ozone formation and methane breakdown. Ammonia contributes to particulate matter. Temporary cooling by some aerosols does not make emissions desirable for health or ecosystems. CO2 and methane (CH4) also remain important to the climate balance. [3] [4]

Deposition does not stop at the farm boundary

Excess nitrogen enriches nutrient-poor ecosystems and can contribute to acidification. Deposition per unit area is often highest close to a source, but emissions also travel longer distances. The effect on a protected area depends on source characteristics, weather, surroundings and contributions from many sources. Local emission reduction and area-wide deposition assessment are therefore different measures. [1] [2]

Control ammonia throughout the manure chain

Measures start with appropriate dietary protein and effective manure management. Rapid removal, limiting contact between urine and urease-containing material, suitable storage, cooling or air treatment can reduce losses. Application rate, equipment, soil and weather matter during fertilisation. Acidification is a specialist option requiring attention to safety, corrosion and downstream effects. Performance depends on the system and operating conditions; generic reduction percentages are not guarantees. [2] [5]

Digestion recovers energy; nitrogen remains in the chain

A digester converts part of the organic matter into biogas. Nitrogen remains largely in the digestate. Its ammonium fraction may increase; ammonia volatilisation depends on factors including pH and temperature. Appropriate covers, digestate storage and low-emission application remain necessary. Methane leakage from storage, gas equipment and upgrading can undermine climate benefits. Biogas CHP also produces combustion emissions. Assess the entire installation and the energy it actually replaces. [5] [6] [9]

RENURE: recover, verify and apply carefully

Nitrogen stripping with capture as an ammonium salt, or a suitable membrane route, can form part of manure and digestate treatment. Nitrogen is transferred into a useful product. Recovery efficiency and whole-chain emission reduction must be assessed separately. Dutch RENURE requirements include producer registration, product quality, sampling and records. Applicable fertiliser limits and application rules remain part of the assessment. [7] [8]

NOx: assess both combustion and energy supply

Electric drives produce no exhaust NOx at the point of use. Supply-chain performance also depends on electricity generation. Combustion optimisation and flue-gas treatment can help where fuels are burned. SCR and SNCR have different operating requirements; residual ammonia and potential N2O formation need attention. Biogas, hydrogen, methanol, LNG or ammonia fuel does not automatically mean a NOx-free or climate-neutral installation. Production pathway, engine technology, aftertreatment and leakage are decisive. [9] [10] [13]

Waste incineration needs a verifiable comparison

Rijkswaterstaat reports that about 6.4 million tonnes of waste were incinerated in the Netherlands in 2024. This is a total waste stream, not a quantity of pure plastic. Imported combustible waste must likewise not be treated as entirely plastic without composition data. A climate assessment must distinguish fossil and biogenic carbon, recovered energy, transport and the alternative treatment. NOx figures need measured or permitted installation data. Bottom ash, fly ash and flue-gas treatment residues are different streams; reuse of processed bottom ash requires demonstrated quality and compliance with application rules. [11] [12]

Measure what a measure actually achieves

Define the baseline, operating conditions and system boundary. Measure nitrogen in incoming manure, products and relevant losses, together with methane, N2O and energy demand. Distinguish kilograms of NH3 from kilograms of nitrogen, concentration from annual load, and recovery efficiency from whole-chain reduction. Percentages for individual stages cannot simply be added. The suitable approach varies by farm, from feed and storage management to an integrated installation. [2] [5] [6] [7]

The Adverio Waste Systems (AWS) approach

AWS connects mono-manure digestion, biogas use, separation and nitrogen recovery with engineering and delivery from Meurs Technisch Ingenieursbureau. A substantiated material and energy balance comes first, followed by design, monitoring and suitable maintenance. This shows which solution works in practice, which emissions it reduces and which products can be used responsibly.

Sources and accountability

Discuss a project?

Sound engineering starts with a substantiated balance. Discuss the options with Klaas Hofstra at Meurs Technisch Ingenieursbureau.

Klaas HofstraMeurs Technisch Ingenieursbureauk.hofstra@meurs.nl ↗0573 – 257 555 ↗