Transfer And Transformation Of Nickel

wallpapers Robot Tech 2021-01-18
Nickel is a transition metal element with element symbol Ni, located in group VIII of the fourth period, with atomic number 28. Nickel is a silver-white metal with good mechanical strength and ductility. It is insoluble in water and has strong corrosion resistance to acids and alkalis, but it is easily soluble in dilute nitric acid and aqua regia. High temperature resistance, melting point 1455 °C, boiling point 2730 °C. The density is 8.902g/cm³. It can be used to make currency, etc. It can be plated on other metals to prevent rust.
 
Migration and transformation: Nickel in natural water is often dissolved in water in the form of halides, nitrates, sulfates and some inorganic and organic complexes. Soluble ions in water can combine with water to form hydrated ions (Ni(H2O)6), and form soluble organic complex ions with amino acids, cystine, fulvic acid, etc., which can migrate with water.
 
The migration of nickel in water is mainly the formation of precipitation and co-precipitation and the migration to the bottom in the crystalline sediments. This migration of nickel accounts for 80% of the total migration; the migration of dissolved forms and solid adsorption forms only accounts for 5% . For this reason, most of the nickel in the water body is concentrated in the bottom sediments. The nickel content of the sediments can reach 18~47ppm, which is 38000~92000 times the nickel content of the water.
 
The nickel in the soil mainly comes from rock weathering, atmospheric dust reduction, irrigation water (including nickel-containing wastewater), farmland fertilization, and the decay of plant and animal remains. Plant growth and farmland drainage can take away nickel from the soil. Usually, the nickel ions that enter the soil with sewage irrigation are adsorbed by the inorganic and organic complexes of soil training, and mainly accumulate on the surface.
 
Storage and transportation conditions
 
Store in a cool, ventilated warehouse. Keep away from fire and heat sources. The packaging must be sealed and not in contact with air. It should be stored separately from oxidants and acids, and avoid mixed storage. Use explosion-proof lighting and ventilation facilities.

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