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Continuous nano- and ultra-filtration of kraft pulping black liquor with ceramic filters: a method for lowering the load on the recovery boiler while generating valuable side-products



Continuous nano- and ultra-filtration of kraft pulping black liquor with ceramic filters: a method for lowering the load on the recovery boiler while generating valuable side-products



Industrial Crops and Products 20(2): 143-150



Ceramic membranes coated with ZrO<sub>2</sub> were used for the continuous separation of a well-defined low molecular weight lignin from softwood and hardwood kraft black liquors on a pilot scale. The membranes used had M<sub>w</sub> cut-offs of 1000, 5000, and 15,000 Da, respectively. The flux (permeate flow) through the different membranes measured as L/(m2.h) was studied by varying the inlet pressure and temperature.

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Accession: 004087830

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DOI: 10.1016/j.indcrop.2004.04.017


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