aluminium sulphate for water treatment/aluminium at malaysia

aluminium sulphate for water treatment/aluminium at malaysia
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  • What is aluminium used for in water treatment?
  • Aluminium is the third most abundant element in the Earth's crust ( Exley, 2009 ). It is often used as coagulants in water treatment process, usually in the form of alum, poly aluminium chloride, ferric aluminium sulphate and aluminium hydroxide chloride ( Evuti and Lawal, 2011 ).
  • How much aluminium is recovered from water treatment plants in Malaysia?
  • At optimum condition, 68.8% of aluminium recovery was obtained. For decades, water treatment plants in Malaysia have widely employed aluminium-based coagulant for the removal of colloidal particles in surface water. This generates huge amount of by-product, known as sludge that is either reused for land applications or disposed to landfills.
  • Why is aluminium sulphate used in water treatment?
  • Water treatment using aluminium sulphate (VI) generally increases the percentage of dissolved, low molecular weight, polyaluminium species that are chemically reactive and possibly more readily absorbed [ 4 ]. Aluminium has been found in the brain of Alzheimer’s patients in the amyloid deposits characteristic of this disease.
  • Can aluminium be recovered in water treatment plant?
  • Recovery of aluminium in water treatment plant can be a significant approach towards sustainability development. Aluminium can be recovered to enhance the utilization of using recycle Aluminium Sulphate Al2(SO4)3 in the industry especially in the coagulation of the water treatment.