Preliminary Results of the Industry-Supported MACT III Sampling Program, 1997 Environmental Conference Proceedings

The industry-funded MACT III study was conducted to provide information on Hazardous Air Pollutant (HAP) emissions from non-chemical pulp and paper mills. This was done via a two-phase approach in which the first phase involved qualitative screening for HAP compounds that may be emitted, and the second phase involved quantitation of HAP and total VOC emissions from representative mills.

Additionally in phase two, studies were conducted at a pilot-scale machine to investigate the fate of HAP constituents of paper machine additives. For the mills studied, sampling results indicate that total mill-wide emissions of “hazardous air pollutants” ranged from 0.06 to 0.41 lb/ton of product. The fraction of total “hazardous air pollutant” emissions contributed by the paper machine ranged from under 10% to over 90%. For the pilot-scale paper machine studies, the spike compounds included: naphthalene, ethylene glycol, 2-

butoxyethanol, 1,2-dimethoxyethane, methyl ethyl ketone, methanol, methylene chloride, and acetaldehyde. The amounts of the compounds exported from the machine through the vents and white water overflow were measured simultaneously to develop material balances. The average amount of the spike compounds released through the vents ranged from 0 to 17%.