Eka Chemicals Ab

Sekab E-technology Ab

Akzo Nobel Chemicals International B.v.

Marie-Louise Wallberg

Erik Sanne

Kjell Rune Andersson

Peter Marten Van Der Horst

Sune Wännström

Elias Sundvall

Cherryleen Garcia-Lindgren

Peter Marten Horst Van Der

There is provided a method of producing a hydrolysate containing sugar from a lingocellulosic biomass, comprising the steps of: a) pretreating the lingocellulosic biomass in a pretreatment process to form a slurry comprising cellulosic particles; b) saccharification of the slurry obtained in step a) in the presence of hydrolytic enzymes in an enzymatic hydrolysis process to obtain a hydrolysate containing sugar; c) analyzing cellulosic particles present in the slurry obtained in step a) and/or cellulosic particles present in the enzymatic hydrolysis process during step b) using an image analysis method to obtain a data set; and d) controlling at least one process parameter of the pretreatment process in step a) and/or enzymatic hydrolysis process in step b) in response to the data set obtained in step c). A corresponding system is also provided.

Image analysis based process control of processes for production of sugar from lignocellulosic biomass

The present invention relates to a filler comprising calcium salt and cellulose derivative having a degree of substitution of net ionic groups up to about 0.65, wherein the filler is substantially free from fibers or fibrils of cellulose or lignocellulose. The invention also relates to a filler comprising calcium salt and a cellulose derivative having a degree of substitution of net ionic groups up to about 0.65, wherein the cellulose derivative contains cationic groups.

Filler for papermaking process

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Domsjö, Sweden

Marie-Louise Wallberg