Data on consumption, production, transformation and supply of black liquor for energy purposes. Data expressed in terajoules (TJ).

Consumption data are broken down by sector (e.g. agriculture, forestry and fishing, food and tobacco, households, etc.). Transformation data are broken down by type of plant (electricity, CHP, heat, etc.).

Black liquor (PU), SIEC code 5140: The alkaline-spent liquor obtained from the digesters during the production of sulphate or soda pulp required for paper manufacture. Remark: The lignin contained in the liquor burns to release heat when the concentrated liquor is sprayed into a recovery furnace and heated with hot gases at 900ºC.

Black liquor is used as a fuel in the pulping process.

The data in TJ should be reported on a Net Calorific Value basis. Until the 2010 Questionnaire this product was listed as Pulp and paper waste.

More details in http://unstats.un.org/unsd/energy/Energy-Questionnaire-Guidelines.pdf

The UNSD Annual Questionnaire on Energy Statistics (the “Questionnaire”) is the primary source of information for the UNSD Energy Statistics Database and contributes to the Energy Statistics Yearbook, the Energy Balances and the Electricity Profiles publications. The Energy Balances present energy data in a format showing an overall picture of energy production, trade, conversion and consumption for energy products utilized in the country, while Electricity Profiles contains detailed information on production, trade and consumption of electricity, net installed capacity and thermal power plant inputs and efficiencies.