Effect of Water Quality and p-DADMAC Pre-Addition on Flocculation Behavior and Dewatering Performance in a Microparticle Retention System
Year: 2026
Type: article
Abstract: Dewatering efficiency is an important factor influencing energy consumption and production efficiency in papermaking.This study investigated the effects of water quality and p-DADMAC pre-addition on flocculation behavior and dewatering performance in a microparticle retention system, as well as the physical properties of the resulting handsheets.Under fresh water conditions, floc size and size distribution varied with the p-DADMAC dosage.In contrast, smaller and more uniform flocs were formed under hard water conditions, presumably because the higher ionic strength restricted the extension of the loop and tail segments of C-PAM.Although these flocs delayed drainage in the wire section, they improved press dewatering by facilitating the removal of water entrapped within the flocs.Furthermore, p-DADMAC pre-addition improved sheet formation and enhanced the tensile and compression properties of the handsheets.These results demonstrate that controlling floc characteristics through p-DADMAC pre-addition can improve press dewatering and paper properties under hard water conditions.
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W7204919769