Cradle to Consumer
Identity ID
a7f6f477-45a2-48df-ac29-917a92ded815
Materials
Associated ID
0f222804-f304-4dac-b987-efdfbde23475
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 consumption end, and the transport service is calculated based on the transport situation of the product in the region. Sodium bicarbonate is commonly used in food, pharmaceutical, household and other fields; this dataset includes the main raw and auxiliary materials, energy and air emissions of the production process, and infrastructure such as production equipment manufacturing and plant construction is not included within the dataset boundary; since the workshop producing sodium bicarbonate by the soda ash process is usually combined with other production workshops that generate large amounts of carbon dioxide, the carbon dioxide used in the sodium bicarbonate production process is all considered to be recovered from other workshops, such as the sodium metabisulfite production workshop; in this dataset, sodium bicarbonate is modeled as a pure substance, and when modeling this substance in solution the user needs to add a solvent of their choice in the model. The data inventory is formed by merging data from multiple sources; the production activity of this product mainly includes the two stages of carbon dioxide absorption and sodium bicarbonate separation and drying.
Activity Description
The production activities of this product mainly include carbon dioxide absorption and baking soda separation and drying.
Process Description
Sodium bicarbonate (CAS number 144-55-8) is a white crystalline powder with the chemical formula NaHCO3, commonly known as baking soda. It is stable at ambient temperature but gradually decomposes above 50°C to form sodium carbonate, water, and carbon dioxide. It is readily soluble in water and forms a mildly alkaline solution. Its vigorous reaction with acids releases carbon dioxide, making it a common raw material for leavening agents and fire-extinguishing agents. In the food industry, it is widely used to leaven baked goods such as bread and biscuits. It is also used as an antacid in pharmaceuticals and for household cleaning and deodorizing.
Time period
2016
2026
Geography
China,Shanghai
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Frontier technology
Technology comment
In the Chinese market, the production of sodium bicarbonate (baking soda) mainly employs three processes: the soda ash method, the trona method, and the metathesis method (ammonium bicarbonate method). The principle of the soda ash method is the reaction of sodium carbonate (soda ash) with carbon dioxide to produce sodium bicarbonate: Na₂CO₃ + CO₂ + H₂O → 2NaHCO₃. The reaction process is as follows: CO₂ is blown into the absorption tower from the bottom and reacts countercurrently with the alkali solution sprayed from the top of the tower to generate NaHCO₃ crystals. The reaction slurry is then centrifuged, and the wet material is conveyed by an auger to a drying tube to obtain high-purity baking soda.