Preparation of Polyaluminum Chloride from Waste Aluminum Foil
Polyaluminum chloride is a commonly used inorganic polymer flocculant. The wide range of raw material sources for the production of polyaluminum chloride provides the basis for its development. In particular, the variety of production processes provides convenience for the development of polyaluminum chloride.
Polyaluminum Chloride
The production and application of inorganic polymer flocculants at home and abroad have taken shape, and theoretical research has also achieved in-depth development. The preparation raw materials mainly include bauxite, aluminum hydroxide, waste molecular sieve catalyst, etc., and the preparation methods mainly include wet method, electrolysis method, etc. Some scholars believe that waste aluminum foil has a high economic value for recycling. He studied the optimum conditions for preparing polyaluminum chloride from waste aluminum foil and the applicable scope of water purification through experiments.
With the development of industry and the rapid growth of urban population, the pollution of water resources is becoming more and more serious, and the sewage that needs to be purified is also increasing, and the demand for water purifiers is increasing. Because polyaluminum chloride molecules have different numbers of hydroxyl groups, when polyaluminum chloride is added to the turbid source water, it continues to hydrolyze under the pH condition of the source water, accompanied by a series of physical and chemical processes such as coagulation, adsorption, and precipitation. process, so as to achieve the purpose of purifying water. The sources of waste aluminum foil are very wide, mainly from cigarettes, food and medicine packaging, etc. Its main component is metal aluminum, which has high economic and social value of recycling. Through experimental research, the optimal conditions and application scope of using waste aluminum foil to make polyaluminum chloride have certain practical significance in improving resource utilization and protecting the environment.