Hi Priyanka,

There are not many updated publications explaining the life cycle GHG emissions relating to N fertilizer production, simply because fertilizer manufacturing companies closely guard the technology they are using for achieving the efficiency of the process.  The best report I have seen is: ‘ENERGY CONSUMPTION AND GREENHOUSE GAS EMISSIONS IN FERTILIZER PRODUCTION’ (published by Kongshaug, G. and Jenssen, T.K. 2003) which may be obtained by contacting the International Fertilizer Industry Association.  This report explains energy consumption in the process of synthesising each building block of different N fertilizer compounds, starting from Ammonia (NH3) manufacturing. NH3 is the basic building block of all inorganic N fertilizer.  By reading this report and having a good understanding of the general energy efficiency trends for your local chemical manufacturing industry, you may be able to perform an updated LCA for urea production in your country.

Try to obtain a copy of this report from the site below.

https://www.fertilizer.org/En/Contacts/Sign_In.aspx?WebsiteKey=411e9724-4bda-422f-abfc-8152ed74f306&LoginRedirect=true&

If not possible to obtain a copy, please indicate later I send it directly.

Another report on ‘benchmarking ammonia manufacturing industry’ (focusing Canadian ammonia industry) is available in the link below.  This report has a Figure presenting the efficiency in NH3 manufacturing in major fertilizer manufacturing countries in the world, that may be useful for you.

http://www.nrcan.gc.ca/sites/oee.nrcan.gc.ca/files/files/pdf/industrial/ammonia-study.pdf

-Susantha.

Hi there

Try pls to have a look to the attached files

regards

IMAD

Hi Priyanka,

There are not many updated publications explaining the life cycle GHG emissions relating to N fertilizer production, simply because fertilizer manufacturing companies closely guard the technology they are using for achieving the efficiency of the process.  The best report I have seen is: ‘ENERGY CONSUMPTION AND GREENHOUSE GAS EMISSIONS IN FERTILIZER PRODUCTION’ (published by Kongshaug, G. and Jenssen, T.K. 2003) which may be obtained by contacting the International Fertilizer Industry Association.  This report explains energy consumption in the process of synthesising each building block of different N fertilizer compounds, starting from Ammonia (NH3) manufacturing. NH3 is the basic building block of all inorganic N fertilizer.  By reading this report and having a good understanding of the general energy efficiency trends for your local chemical manufacturing industry, you may be able to perform an updated LCA for urea production in your country.

Try to obtain a copy of this report from the site below.

https://www.fertilizer.org/En/Contacts/Sign_In.aspx?WebsiteKey=411e9724-4bda-422f-abfc-8152ed74f306&LoginRedirect=true&

If not possible to obtain a copy, please indicate later I send it directly.

Another report on ‘benchmarking ammonia manufacturing industry’ (focusing Canadian ammonia industry) is available in the link below.  This report has a Figure presenting the efficiency in NH3 manufacturing in major fertilizer manufacturing countries in the world, that may be useful for you.

http://www.nrcan.gc.ca/sites/oee.nrcan.gc.ca/files/files/pdf/industrial/ammonia-study.pdf

-Susantha.

sir thank you for the link

only second link is opening but not the first as it is asking for password and i am not registered there. so kindly send me pdf file

Hi, Good afternoon

A carbon footprint is defined as the total set of greenhouse gas emissions caused by (an individual, event, organisation, product) expressed as CO2e

For the Calculation of carbon foot print, you can use online Carbon footprint calculator, like

May be 3rd link is most useful for you.

http://carbonsolutions.com/Calculator.html

http://calculator.carbonfootprint.com/calculator.aspx

http://www.carbonindependent.org/

This note documents the calculation methodology for establishing the carbon footprint 

(greenhouse gas emissions) of fertilizers based on ammonium nitrate (AN). It is limited to the 

emissions arising from the production of the nitrogen content of the fertilizer. The methodology 

is documented in response to the requirements of the emission standard set by the Swedish 

food industry for climate branding (ref 1). Blue text refers to updated information and 

calculations since the previous version. 

 Basic Principles 

Ammonium nitrate is produced by the reaction of ammonia with nitric acid: 

NH3 + HNO3 - NH4NO3 

Schematically, for a modern plant, this can be shown as follows: 

Molecular weight NH3 

= 14+3x1=17 Consumption of ammonia =

�

17/63 = 0.270 t NH3/ t HNO3

�

Conversion efficiency = 94%

�

Consumption of ammonia = 

17/80 = 0.213 t NH3/ t AN 

Molecular weight HNO Conversion efficiency = 97% 3 

= 1+14+3x16=63 

Consumption of nitric acid =

�

63/80 = 0.788 t HNO3/ t AN

�

Ammonia 

Nitric acid 

AN 

solution 

energy 

consumption 

0.15 GJ/t AN 

AN solids 

energy 

consumption 

0.5 GJ/t AN 

Molecular weight NH4NO3 

= 14+4x1+14+3x16=80