Due to their integrated character mechanical grades of paper display a very special sensitivity to upstream pulping and bleaching processes. Impact of interfering substances contributing to conductivity, cationic demand and hardness of water systems on the paper machine performance will be discussed. Control strategies available to papermaker will also be presented.

Dr. Przemyslaw Pruszynski Nalco an Ecolab Company Global Technical Specialist - Paper Chemistry

Dr. Pruszynski (Przem) received his MSc and PhD from University of Poznan, Poland in the area of Physical Organic Chemistry in 1976. He taught for 12 years at this University. After moving to Canada in 1986 he continued research and teaching in Canada at Dalhousie University in Halifax, NS and later at University of Toronto. He started industrial part of the carrier at Dow Chemical Research in 1990 working in the Forest Product Group in Sarnia. Joined Nalco Canada in Burligton, Ontario in 1992 as a Group Leader in R&D. After moving to US he continued with Nalco as a Technical Director in Corporate Pulp and Paper Research. Recently he works as Global Technology Specialist bridging research and development with practical challenges of paper industry. Przem authored and co-authored close to 100 papers and conference contributions in many different areas. He holds 6 US patents in various areas of paper making. He holds 6 US patents in various areas of paper making. In 2008 he received Jasper Mordon Award for the best paper at APPITA Conference in Rotorua. Przem was invited to open 2010 Paper Conference in Guangzhou as a Keynote Speaker.