Similarly, the
efficiency of mixture of each of the plant with alum was tested. The optimum dosages and turbidities
(NTU) were observed to be 80ppm and 7 NTU (alum), 120ppm and 5 NTU (M. oleifera), 130ppm and 110
NTU (C. tridens); 130ppm and 80 NTU (H. sabdariffa) respectively.