Removal of the Colloidal Suspension from Dam Water Using Mineral Coagulants Prepared by Co-Precipitation
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Removal of the Colloidal Suspension from Dam Water Using Mineral Coagulants Prepared by Co-Precipitation Abdellah-Anouar El foulani & Jamal Jamal-eddine & Brahim Lekhlif
Received: 22 July 2020 / Accepted: 2 October 2020 # Springer Nature Switzerland AG 2020
Abstract In this work, we were interested in eliminating the organic and mineral compounds that pose problems in obtaining drinking water using the method of coagulation. These substances are stable in the medium due to their colloidal sizes and surface loads, which require appropriate treatment. For this purpose, we explored the removal of colloidal suspension using a coagulant formed by co-precipitation of AlCl3.6H2O in an alkaline medium. This practice leads to the formation of polymeric species mixtures such as Al45O45(OH)45Cl and Al2O3.H2O after washing. The removal efficiency of mineral and organic matter is evaluated by measuring the turbidity and permanganate index by varying the concentration of the coagulant from 0.04 to 0.4 g.1−1. It has been shown that the effectiveness of the treatment had been increased in parallel with the concentration. The preliminary hydrolysis of aluminium leads to a fixation of the pH throughout the concentration range.
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