aluminium hydroxide production, UPR, ecoinvent 3.6, Undefined

Categories:
ISIC4 categories:
C:Manufacturing/20:Manufacture of chemicals and chemical products/201:Manufacture of basic chemicals, fertilizers and nitrogen compounds, plastics and synthetic rubber in primary forms/2011:Manufacture of basic chemicals
Location:
IAI Area, Russia & RER w/o EU27 & EFTA
Reference year: 2015 - 2015
Description

Location: IAI Area, Russia & RER w/o EU27 & EFTA - IAI Area, Russia & Europe outside EU27 & EFTA
Data on Al(OH)3 extraction and calcination to Al2O3 was aggregated on original source (International ALuminium Institute 2015 LCI survey, IAI personnal communication in 2017). In- and outputs of Al(OH)3 are calculated according to the stoichiometry (1.530 kg Al(OH)3 --> 1.000 kg Al2O3 + 0.530 kg H2O). Separate energy data was provided by IAI for production of hydrate and calcination processes. The Al(OH)3 extraction process involves adding milled bauxite to a hot caustic soda (NaOH) solution, dissolving the aluminium-bearing minerals (gibbsite, böhmite and diaspore) present to form a sodium aluminate supersaturated solution or “pregnant liquor”. Flocculants are added to aid settling and the solution is progressively cooled causing aluminium hydroxide crystals to precipitate. Further information can be found at http://bauxite.world-aluminium.org/refining/process.html.
Two sources were used in the creation of this dataset: IAI 2015 Survey data (officially published in 2017); and original ecoinvent 2 data (Althaus, 2007) for exchanges unreported by IAI.
Undefined unit processes (UPRs) are the unlinked, multi-product activity datasets that form the basis for all of the system models available in the ecoinvent database. This is the way the datasets are obtained and entered into the database by the data providers. These activity datasets are useful for investigating the environmental impacts of a specific activity (gate-to-gate), without regard to its upstream or downstream impacts.

Technology

Average technology for the global aluminium industry.

Process type
Unit
Supported nomenclature
ecoinvent 3.6
LCI modeling approach
Before modeling
Multifunctional modeling
NONE
Format
ECOSPOLD2
Aggregation type
NOT_APPLICABLE
Data provider
ecoinvent
Review status
External
Cost
For sale
License

ecoinvent EULA

Contact
support@ecoinvent.org