De-inking enzyme is a composite enzyme preparation. The use of de-inking enzymes in the de-ink process of waste paper pulp can reduce the use of conventional de-inking chemicals and improve the chemical-free de-inking system composed of filter screening, flotation, and washing processes. This de-inking enzyme product is not only suitable for removing ordinary dispersible printing inks, but also for removing non dispersible printing inks that are difficult to remove with conventional chemicals. De-inking enzymes can alter the binding force between fiber surfaces or between fiber surfaces and ink particles, causing ink particles to detach from fibers and disperse, thereby improving the efficiency of ink particle removal during washing or flotation processes.

Physical and chemical properties:

Appearance: Light brown liquid

Solubility: Easily soluble in water

Enzyme dosage: 100-500mL/t waste paper

Suitable pH value: 7.0-9.0

Suitable temperature: 35-65 ℃