Deinking sludges

Duff SJ, Moritz JW, Casavant TE. Effect of surfactant and particle size reduction on hydrolysis of deinking sludge and nonrecyclable newsprint. Bio-technol Bioeng 1995 45 239-244. 

Fig. 10.7 Composition of deinking sludges from the production of wood-containing graphic papers related to dry substances (Germany) [11].

Table 10.4 Chemical characteristics of deinking sludges with data related to dry substance [11].

Fig. 10.8 Heavy metal contents of deinking sludge, biological sludge and municipal sewage sludge (Germany) [13].

Table 10.5 Composition and dewatering of rejects and deinking sludges.

Heavy-weight and coarse rejects Light-weight and fine rejects Deinking sludges... 

Use of deinking sludges in agriculture is Still controversial. In North America, no objections exist concerning their use as a soil improving material provided the material does not exceed defined contaminant concentrations or harmful sub-... 

Besides extension of the processes to use waste material described so far, further possibilities exist for the use of waste from paper mills. These mainly concern fibrous sludges and deinking sludges. Only a small number of paper mills use these possibilities, or they have been limited so far to laboratory scale tests and pilot installations. New developments in the area of sludge use include ... 

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