![]() ![]() Different dosage of sulphuric acid ranges at 0.45 – 1.80M at constant weight of alum sludge at 300g were analysed to obtain the maximum percentages of aluminium recovery. Acidification process using sulphuric acid is investigated in this study to recover the aluminium from sludge. ![]() The sludge still contains high concentrations of aluminium that can be recovered for further use. Therefore, sludge disposal is one of the main drawbacks in water treatment plants as it requires large footprints to store the residual sludge before being dumped at landfills. Despite of its effectiveness in treating the water, it produces high volume of residual alum sludge to be discarded to sludge lagoon. Aluminium sulphate Al2(SO4)3 known as alum is commonly added chemical in coagulation-flocculation process in water treatment plants. ![]()
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