Cradle to Gate
Identity ID
443c55ee-801e-4cbb-96c0-0ea2b26dac6e
Materials
Associated ID
86e6b4c4-d511-4091-a633-3c11fac5b84b
Included activities starts
Included activities ends
Description
Ammonium persulfate is widely used in fields such as the chemical industry, metal surface treatment, textiles, papermaking, pharmaceutical intermediate synthesis, and water treatment. Ammonium persulfate is modeled as a pure substance; when modeling this substance, the user needs to add a solvent of their choice in the model. This dataset includes the main raw and auxiliary materials, energy, and atmospheric emissions of the production process; infrastructure such as the manufacturing of production equipment and the construction of plants is not included within the dataset boundary. The data inventory is formed by merging data from multiple sources. The production activity of this product includes process steps such as electrolysis, neutralization, crystallization, centrifugation, and drying. Hydrogen is a by-product of this production process, allocated according to economic value.
Activity Description
The production activities of this product include electrolysis, neutralization, crystallization, centrifugation, drying and other processes.
Process Description
The chemical formula of ammonium persulfate (NH4)2S2O8, CAS number 7727-54-0, is usually white crystalline powder or granules, odorless and easy to absorb moisture. It is easily soluble in water, the aqueous solution is acidic, and it is insoluble in organic solvents such as ethanol and ether. It is chemically active and has strong oxidizing properties. It can oxidize metal ions and organic matter. It is easily decomposed when heated (over 120°C) or in contact with reducing agents and organic matter. It releases oxygen and produces ammonium sulfate, sulfuric acid and other substances, which is irritating to the skin and mucous membranes. In industry, it is mainly used in the chemical industry (as an initiator for polymerization reactions), metal surface treatment (as an etching agent, oxidation treatment agent); it is also used in the textile industry (as a bleaching agent, dye oxidation color forming agent), papermaking industry (for bleaching and deinking of paper), and can also be used as an oxidant for the synthesis of pharmaceutical intermediates and water quality treatment (to remove reducing pollutants in water).
Time period
2013
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The one-step electrolysis method is the core mainstream technology for the production of ammonium persulfate. It has strong process continuity and controllable purity. It accounts for 78%-82% of the domestic ammonium persulfate market. Chemical oxidation method, metathesis method and other processes account for the remaining market share and are mainly used for the production of low-end products in small batches. This data set represents this mainstream technology: ammonium sulfate solution is added to the electrolytic tank for electrolysis reaction; the electrolyte is concentrated and cooled, and ammonium persulfate crystals are crystallized. The crystal slurry is washed with clean water and filtered to obtain the crude product; the crude product is dissolved and filtered, recrystallized and centrifuged, and the mother liquor is reused in production. Finally, it is dried, cooled and screened to obtain the finished product. The chemical reaction equation involved is mainly: 2(NH4)2SO4 + H2SO4 → (NH4)2S2O8 + (NH4)2SO4 + H2↑