Photoinitiated Polymerization of Cationic Acrylamide in Aqueous Solution: Synthesis, Characterization, and Sludge Dewatering Performance

Table 1

Contrast of sludge dewatering performances of several CPAMs with analogous molecular weight and various contents of DAC.

Samples number	Mass ratio of AM to DAC	Molecular weight (×10^4) g·mol^−1	Zeta potential mV	Filter cake moisture content %
1	10 : 0	560	−18.9	77.8
2	8 : 2	550	−10.4	74.3
3	7 : 3	500	−5.6	70.2
4	6 : 4	530	−1.29	63.6
5	5 : 5	480	1.67	68.9

The analogous molecular weight of copolymers was attained by adding various dosages of the photo-initiator; the dosage of all samples was 1.5 g·kg⁻¹ sludge dry matter; the concentration of polymer solution was 0.1%.