What is ISO 21877- Stationary source emissions - ammonia about?
ISO 21877 discusses stationary source emissions with a focus on the mass concentration of ammonia. ISO 21877 specifies a manual method of measurement including sampling and different analytical methods for the determination of the mass concentration of ammonia (NH3) in the waste gas of industrial plants, for example, combustion plants or agricultural plants. All compounds that are volatile at the sampling temperature and produce ammonium ions upon dissociation during sampling in the absorption solution are measured by this method, which gives the volatile ammonia content of the waste gas.
ISO 21877 specifies an independent method of measurement, that has been validated in field tests in a NH3 concentration range of approximately 8 mg/m3 to 65 mg/m3 at standard conditions. The lower limit of the validation range was determined under operational conditions of a test plant. The measurement method is used at lower values depending, for example, on the sampling duration, sampling volume, and the limit of detection of the analytical method used.
Who is ISO 21877- Stationary source emissions - ammonia for?
ISO 21877 on ‘stationary source emissions – ammonia’ is useful for:
- The agriculture industry
- Power plants
- Cement factories
- Other production units that release ammonia as a stationary source emission
- Waste incineration plants
- Safety and regulatory authorities
- Environmental bodies
- Laboratories
Why should you use ISO 21877- Stationary source emissions - ammonia?
Ammonia emissions arise to a large extent from agriculture. Industries such as chemical production processes (e.g., fertilizer production plants) emit ammonia as well as power plants, cement factories, and waste incineration plants with SCR and non-SCR reactors with ammonia slip. Ammonia emissions are measured and often controlled by legislation. ISO 21877 specifies an independent method of measurement for intermittent monitoring of ammonia emissions as well as for the calibration and validation of automated ammonia measuring systems.
ISO 21877 provides a manual method that ensures the measurement uncertainty is representative of the emission at a specific plant. ISO 21877 is used in conjunction with ISO 17179, that specifies performance characteristics of automated measuring systems (AMS) for the determination of the mass concentration of ammonia in waste gas. According to ISO 17179, permanently installed AMS for continuous monitoring of ammonia emissions are calibrated and validated by comparison with an independent method of measurement. Monitoring your ammonia emissions using ISO 21877 guidelines helps you to comply with emission regulations.