Compare And Contrast The Turbidity Removal Of Biopolymer Coagulant
Based on the figure above, it is clearly showed that the trend line was gradually increased before it dropped after achieved at one maximum point. This maximum point, pH 6 was the optimum pH for the turbidity removal for this water sample. Note that the final pH of treated water were dropped slightly from its initial pH. For the optimum pH, the pH was dropped from pH 6.50 to 4.11 which caused the water to become acidic. The pH were dropped because when the alum dissolved in water, aluminium, sulphate and hydrogen ions were released. At time of precipitation of Al(OH)3, there were only two types ions remained in solution which were hydrogen and sulphate ions. To such a degree, effectively, the addition of alum and the precipitation of Al(OH)3
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By comparing both coagulants, the optimum turbidity removal of biopolymer coagulant was 82.82% for 50 v/v dosage while for alum, the optimum turbidity was 94.36% for 10 mg/L. The final turbidity for lake water using biopolymer coagulant were 14.80, 10.20 and 12.80 NTU, while for alum coagulant, the final turbidity of lake water recorded were 4.50, 4.30 and 4.20 NTU. This showed the biopolymer coagulant was less effective in low level of raw water as the final turbidity of lake water using alum coagulant was followed the compliance for drinking water. However, as the turbidity of lake water getting higher, the coagulation efficiency of biopolymer coagulant become increased. At medium initial turbidity, the efficiency removal for lake water using biopolymer coagulant was increased due to the lake water tends to have high amount of suspended solids. This is because biopolymer coagulant has abundant amount of positive charges that will neutralize the increase in negative charges carried by suspended solids.
Even though the alum performance was higher than biopolymer coagulant, however the biopolymer coagulant was believed to have chances in order to compete with alum since the difference in turbidity removal was only 11.54%. The alum coagulant can be replaced by biopolymer coagulant in order to preserve environment and to avoid the overdosing of alum usage which can cause nerve
By comparing both coagulants, the optimum turbidity removal of biopolymer coagulant was 82.82% for 50 v/v dosage while for alum, the optimum turbidity was 94.36% for 10 mg/L. The final turbidity for lake water using biopolymer coagulant were 14.80, 10.20 and 12.80 NTU, while for alum coagulant, the final turbidity of lake water recorded were 4.50, 4.30 and 4.20 NTU. This showed the biopolymer coagulant was less effective in low level of raw water as the final turbidity of lake water using alum coagulant was followed the compliance for drinking water. However, as the turbidity of lake water getting higher, the coagulation efficiency of biopolymer coagulant become increased. At medium initial turbidity, the efficiency removal for lake water using biopolymer coagulant was increased due to the lake water tends to have high amount of suspended solids. This is because biopolymer coagulant has abundant amount of positive charges that will neutralize the increase in negative charges carried by suspended solids.
Even though the alum performance was higher than biopolymer coagulant, however the biopolymer coagulant was believed to have chances in order to compete with alum since the difference in turbidity removal was only 11.54%. The alum coagulant can be replaced by biopolymer coagulant in order to preserve environment and to avoid the overdosing of alum usage which can cause nerve