A positive relationship is found to occur between the EPS content and sludge volume index. A larger contact angle and smaller surface charge is related to a lower level of effluent suspended solids. It discusses the current status of effluent land application in the industry and the need for further studies. The first non-contact laser radiometric characterization of paper is presented. The technique has proven capable of easily giving accurate quantitative measurements of the thermophysical properties of various kinds of paper.
Various additives can control fireside deposit accumulation in recovery boilers.
The kraft chemical recovery process is facing significant environmental challenges regarding air emissions and mill closure. The means for dealing with these environmental issues are reasonably straightforward, although potentially costly. New technology on the horizon may result in energy benefits. The rate of sintering of dust particles from a kraft recovery boiler was measured experimentally by measuring the shrinkage of pellets made from the dust.