Abstract
Currently, research is focused on the synthesis of new composite coagulants, which are constituted of both inorganic and organic materials, so as to utilize within one reagent the advantages of both inorganic and organic components and increase their efficiency in treating water and/or wastewater. In this paper, the development of such reagents is investigated by combining an inorganic pre-polymerised coagulant (polyferric sulphate, PFS) with an organic, non-anionic polymer (polyacrylamide, PAA) under different [PAA]/[Fe] (mg/L) ratios. The results show that they possess improved properties than the conventional, non-modified reagents. Coagulation experiments suggested that the new coagulants exhibit a very good coagulation performance, thus enabling to consider their application in treating real and more loaded wastewaters, investigating their efficiency in removing possible toxic pollutants.
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