basicity of white poly aluminium chloride using method

basicity of white poly aluminium chloride using method
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  • What is high-purity poly-aluminum chloride (PACL)?
  • Poly-aluminum chloride (PACl) is one of the common coagulants for water and wastewater treatment. A new Chinese national standard of PACl has been implemented, where the concentration of insoluble substances, iron and heavy metals is to be controlled strictly, then researches on the preparation of high-purity PACl are needed.
  • What are the synthesis parameters of aluminum chloride hexahydrate?
  • The synthesis parameters were concentration of aluminum chloride hexahydrate (0.4 to 0.8 M), basicity ratio (2.0 to 2.4), reaction temperature (60 to 80 °C) and time (180 to 360 min). The performance of PΑC for water treatment was also investigated. The monomeric, medium polymeric and colloidal species of PAC were determined by Ferron test method.
  • Does initial concentration of aluminum chloride affect the yield of Al B?
  • As observed in Fig. 1 (a–d), the effects of initial concentration of aluminum chloride, basicity ratio, reaction temperature and time curves were steep slope and curvature, which revealed that the yield of Al b content in the PΑC species was very sensitive for these factors.
  • Does calcium aluminate react with aluminum chloride to increase basicity?
  • It indicated that the method of increasing the basicity in liquid PACl is viable, calcium aluminate reacts with aluminum chloride (zero base) to generate a high basicity PACl (Eq. (2)). The sample A exhibited the highest aluminum content (13.7%) and the highest basicity (92.9%).