Identification and characterization of sticky contaminants in multiple recycled paper grades

Organic sticky contaminants represent one of the biggest technical challenges in paper recycling process. These reduce strength, cause plugging wires and felts, stick to or deposit on machine parts affecting runnability machine. The removal these is difficult achieve along process due heterogeneous nature organic contaminants. In this study, multiple wastepaper grades was analyzed characterized using screening, solvent extraction with subsequent analysis such as FT-IR, GC-MS, SEM. content stickies varies among different their recovery methods. from curb side collection contains nearly 4 times amount than most collected a local mill. Polyvinyl acetate polymers, styrene butadiene rubber (SBR), paraffin waxes polyamines are major components extracted addition, heavily fibers surface leading high negative charge suspension ranging between 2 4.5 µeq/L. It expected that findings will assist addressing knowledge gaps understanding behaviors, eventually develop highly efficient technologies for contamination