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Table 1

Log10 of CFU removal of Staphylococcus sp. and Escherichia coli at 50 NTU in pH 5, pH 7 and pH 9 after coagulation process by diatomite or alum

CoagulantsStaphylococcus sp.
Escherichia coli
pH 5pH 7pH 9pH 5pH 7pH 9
Diatomite 0.99 ± 0.42a 0.80 ± 0.41 0.17 ± 0.05 0.87 ± 0.30 0.51 ± 0.31 0.67 ± 0.25 
Alum 0.70 ± 0.27a 0.29 ± 0.23 0.27 ± 0.04 0.43 ± 0.18 0.21 ± 0.08 0.62 ± 0.17 
CoagulantsStaphylococcus sp.
Escherichia coli
pH 5pH 7pH 9pH 5pH 7pH 9
Diatomite 0.99 ± 0.42a 0.80 ± 0.41 0.17 ± 0.05 0.87 ± 0.30 0.51 ± 0.31 0.67 ± 0.25 
Alum 0.70 ± 0.27a 0.29 ± 0.23 0.27 ± 0.04 0.43 ± 0.18 0.21 ± 0.08 0.62 ± 0.17 

aP < 0.05 compared with diatomite/alum.

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