Coagulation and Sedimentation of Concentrated Laterite Suspensions: Comparison of Hydrolyzing Salts in Presence of Grewia spp. Biopolymer

Figure 6

Settling curves of coagulated laterite suspension: pH 5 (a–c); pH 7 (d–f); Al (alum); Fe (FeCl₃); Al + G (alum + 25 mg/L Grewia spp. biopolymer); Fe + G (FeCl₃ + 25 mg/L Grewia spp. biopolymer).

(a)

(b)

(c)

(d)

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(f)