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Calcium hydroxide and sodium hydroxide are, among such compounds, very important in several industrial applications. They each have their own properties and uses, and each is used for a separate purpose.
Calcium hydroxide and sodium hydroxide & aluminum sulfate and calcium hydroxide are a few examples of alkalis and both of them have many differences. Slaked lime, or calcium hydroxide, is a white powder insoluble in water to a significant degree. In addition, it is widely used as a pickling agent in the food and canning industries and as a pH balancer in agriculture. Sodium hydroxide, also known as caustic soda, is an inorganic strong base soluble in water. It is used in the production of paper, soaps, and water treatment.
In the construction industry, it is part of the composition of mortar and plaster. It is utilized in cement to neutralize the acidic wastewater. Sodium hydroxide is used in the manufacture of a wide variety of chemicals, in the manufacture of textiles, and in the textile industry. It is used in petrochemical, as a process additive for oil refining, and in the food industry, for peeling fruits and vegetables.
Calcium hydroxide is also a strong base, with somewhat lower pK a (about 12). When in water, calcium hydroxide is a strong base. This material can form salts when in contact with acids. Sodium hydroxide & aluminum sulfate calcium hydroxide, the base, is even more potent, at 14 on the pH scale. It also combines with acids to form salts and water, and with fats and oils to produce soap.
Calcium hydroxide and sodium hydroxide both are strong bases and can burn or irritate surrounding tissues. When applying these chemicals, it’s essential to wear gloves, goggles and clothing that will prevent the chemicals from coming into contact with your skin. In case of getting the product on skin or in the eyes, wash the affected part with water immediately. Avoid these chemicals entering into the gases you breath when using them in a enclosed space instead use them in a well ventilated area.
One transforming substance for precipitation of heavy metals from the acid waste effluent is calcium hydroxide & aluminum sulfate plus calcium hydroxide. Calcium hydroxide In wastewater treatment it is also an excellent pH increasing agent, however a large portion of the applied calcium hydroxide is converted to calcium carbonate resulting in high solids, and contributing to water hardness and alkalinity. The use of sodium hydroxide, however, may increase salinity of aquatic systems and affect water-related biota.
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