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Updated: Jun 22, 2026

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
Published on: February 21, 2017
Applicability of liquid ion exchange to alum recovery from waste stabilization pond sludge
Atul K Sthapak1, D J Killedar, A G Bhole
1Govt. Engineering College, Ujjain-456 010. atulsthapak@yahoo.co.in
Abstract:
This paper reports the evaluation of the tertiary application of relatively low doses of alum for improving the overall performance and reliability of existing wastewater treatment plants. With this type of system, the additional capability for phosphorus removal is imbibed by simply altering the chemical dose. The study was conducted on wastewater from a Stabilization pond having capacity of 54 mld, which was treating municipal wastewater from Ujjain city. The wastewater had suspended colloidal impurities.
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The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:

