Cradle to Consumer
Identity ID
fcf85498-e6f5-4e06-aff5-55de9ccc05d4
Materials
Associated ID
a8885033-2f3f-4706-8a1e-24bc359ce621
Included activities starts
Included activities ends
Description
This dataset is a market dataset, representing the consumption market of the region; the dataset includes the transport of the product from the gate to the consumer end, and the transport service is calculated according to the transport situation of this product in this region. Aluminium sulfate octadecahydrate is widely used in tap water purification, paper sizing, and as a dye mordant; modelled as the pure substance aluminium sulfate, and when modelling this substance the user needs to add a solvent of their choice in the model; the dataset contains the main raw and auxiliary materials, energy, atmospheric emissions and waste of the production process, and infrastructure such as the manufacture of production equipment and the construction of plant buildings is not included within the dataset boundary; the data inventory is formed by merging data from multiple sources; the production activities of this product mainly include batching and adjustment, reaction, analysis and testing, cooling crystallisation, crushing and lifting.
Activity Description
The production activities of this product mainly include ingredients adjustment, reaction, analysis and testing, cooling and crystallization, crushing, lifting and other processes.
Process Description
The CAS number of aluminum sulfate octadecahydrate is 7784-31-8. It is a colorless to white massive or granular crystal, stable in air at room temperature, easily soluble in water and the aqueous solution is highly acidic. Its main uses are the same as ordinary commercial aluminum sulfate. It is the most common industrial form and is widely used in tap water purification, papermaking sizing and as a dye mordant.
Time period
2018
2026
Geography
China,Tianjin
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The current mainstream process for producing aluminum sulfate in China is the "sulfuric acid decomposition of aluminum sources" method. The specific technical routes are divided into two main categories depending on the aluminum source, and together they account for more than 95% of production capacity: (1) Aluminum hydroxide–sulfuric acid method: Industrial aluminum hydroxide is reacted with sulfuric acid. The reaction is mild, the product purity is high, and the aluminum oxide content is controllable. This is the preferred route for producing iron-free, high-grade aluminum sulfate (e.g., papermaking grade and drinking water treatment grade). Reaction equation: 2Al(OH)₃ + 3H₂SO₄ → Al₂(SO₄)₃ + 6H₂O. (2) Bauxite–sulfuric acid method: Low-grade bauxite (or kaolin, clay) is reacted with sulfuric acid. The raw material cost is low, but the product contains relatively high levels of iron and other impurities. It is mainly used for industrial water treatment or lower-grade applications, and waste residue is generated during the production process.