Novel Biocide Provides Effective Microbiological Control Without Adversely Affecting the Papermaking Process, 2002 Technology Summit Proceedings

C. K. Davis, G. Casini

Natural microbial populations interfere with effective paper production. Strong oxidizing biocides (oxidizers) are commonly used to control these populations, but to be effective they are typically dosed to achieve a free oxidizer residual. Paper streams contain many substances that consume oxidizers (e.g., fiber and starch). Therefore, to achieve effective microbiological control, the oxidizer must be overdosed to overcome the effect of these substances. When dosed in this manner, the excess oxidizer causes many unwanted reactions and adverse side effects, including consumption of costly papermaking additives, increased corrosion rates, and reduced felt life.

A new biocide that effectively controls microbial populations without adversely affecting the papermaking process is now available. The product not only provides excellent control of microbial populations but also quickly degrades into inert compounds before effluent discharge.