Can polyacrylamide be used as a coagulant in humic acid-kaolin water treatment?

Drinking water treatment by stepwise flocculation using polysilicate aluminum magnesium and cationic polyacrylamide J. Environ. Chem. Eng., 7 ( 2019), Article 103049 Polyacrylamide as coagulant aid with polytitanium sulfate in humic acid-kaolin water treatment: effect of dosage and dose method

Can anionic polyacrylamide be used as coagulant aid with ferric sulphate and polyaluminium chloride?

It is important to point out that the optimal coagulant dose can be reduced when anionic polyacrylamide is used as coagulant aid with ferric sulphate and polyaluminium chloride, thus decreasing treatment costs. 3.10. Mechanisms of the process

Does anionic polyacrylamide improve the coagulation–flocculation process?

The use of anionic polyacrylamide had little effect on this cost but improved the coagulation–flocculation process, leading to a significant increase in the settling speed and reduction in the volume of sludge produced. Table 7.

Does cationic-polyacrylamide promote humic acid removal?

The combination of organic and inorganic coagulants is considered to be an effective strategy for Humic Acid (HA) removal. In this study, the performance of Titanium-based coagulants aided by Cationic-Polyacrylamide (CPAM) to HA molecules was compared. It was found that CPAM had a higher promotion effect in the TXC system.

What are the advantages of anionic polyacrylamide?

The use of anionic polyacrylamide increases the flocculation efficiency of the coagulant, increasing the settling speed, reducing the amount of coagulant required for the treatment and lowering the cost of the coagulation-flocculation process. This work was financially supported by a grant from the Ministry of Education and Science of Spain.

Does cationic-polyacrylamide increase zeta potential of inorganic coagulants?

The use of Cationic-Polyacrylamide as a flocculant significantly increased the zeta potential of inorganic coagulants ( Fig. 2). Thus, the addition of CPAM in three coagulants was observed more effective in fluorescence quenching of HA-like organics, which indicated that CPAM promoted the effective removal of HA.