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(a) Discuss the possible mechanisms involved in the destabilization of a suspension of mineral particles upon addition of alum. The suspension pH is initially 7.0

(a) Discuss the possible mechanisms involved in the destabilization of a suspension of mineral particles upon addition of alum. The suspension pH is initially 7.0 and the pH of the zero point of charge (PZC) of the particles is 6.2. Suggest three possible mechanisms for destabilization.

(b) If the pH of the PZC were 9.5, would the same mechanisms apply?

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