Chemically defined as Al2(SO4)3, Aluminium Sulphate appears as a white crystalline powder with typical active alumina (Al8O3) content around 17%. It is highly soluble in water, dissociating to release Al3+ ions that neutralize the negative charge of colloidal suspensions found in raw or wastewater. This charge neutralization destabilizes suspended particles, causing them to aggregate into larger flocs that can be separated by sedimentation or filtration.
The coagulation mechanism depends on precise dosing and water pH; Aluminium Sulphate performs optimally in the pH range of 5.5 to 7.5. Outside this range, the formation of insoluble aluminium hydroxides may alter effectiveness. The product’s iron-free purity ensures no unwanted coloration or secondary contamination in treated water, a critical factor for drinking water, pulp, and textile processes.
Manufacturing of Aluminium Sulphate involves reacting aluminium hydroxide or aluminium metal with sulfuric acid under controlled conditions, yielding a stable, granular or powdered product. Performance characteristics include rapid coagulation, ease of handling, and good solubility in treatment systems. Industrial operations often select this coagulant over alternatives for its balance of cost, effectiveness, and regional availability.
In addition to its central role in water coagulation, Aluminium Sulphate also acts as a mordant, fixing dyes in textile processing by forming insoluble complexes with dye molecules and fabric fibers. This feature enhances color fastness and durability in manufactured textiles.
Zenco Systems Ltd ensures consistent quality Aluminium Sulphate supply tailored to client needs across water treatment, paper, textile, and leather sectors in Kenya, Uganda, and Tanzania. Buy with confidence knowing the product meets the requirements for efficient coagulation and industrial water purification.