Kemira Oyj

Aalto University Foundation

Nordic Bioproducts Group Oy

Aalto University Foundation Sr

Olli Dahl

Kari Vanhatalo

Kari Parviainen

Asko Karppi

Veli-Matti Vuorenpalo

Leif Robertsen

Mikael Svedman

Heikki Hannukainen

Leif Robertsén

Asko Koskimäki

Erkki Iikka Sakari Rasanen

Erkki Iikka Rasanen

Erkki Iikka Sakari RÄSÄNEN

According to an example aspect of the present invention, there is provided an animal feed additive, which contains lignin-containing microcellulose, especially lignin-containing microcrystalline cellulose, for improving feed conversion rates of production animals, such as poultry.

Lignin containing microcellulose as an animal feed additive

The present invention relates to a process for producing microcellulose comprising subjecting fibrous cellulosic material to acid hydrolysis at a temperature from 10&#xb0; C. to less than 140&#xb0; C. and at a consistency of at least 8% on dry weight of the cellulose, wherein the amount of added acid is from 0.2 to 2%, preferably from 0.3 to 1.9%, more preferably from 0.5 to 1.5% on dry weight of the cellulose.

Process for producing microcellulose

The present invention relates to a process for producing microcellulose comprising a) acidifying fibrous cellulosic material, b) washing the acidified cellulosic material, c) optionally dewatering the washed cellulosic material, and d) hydrolyzing the washed or washed and dewatered cellulosic material under acidic conditions at a temperature of at least 120&#xb0; C. and at a consistency of at least 8% on dry weight of the cellulose.

Manufacturing of microcellulose

The present invention relates to a process for producing microcellulose comprising hydrolyzing fibrous cellulosic material with an acid at an elevated temperature or acidifying fibrous cellulosic material followed by washing and hydrolyzing the washed cellulosic material at an elevated temperature to produce a microcellulose-hydrolysate mixture followed by separation of the microcellulose from the hydrolysate, wherein the mixture or separated hydrolysate or microcellulose is optionally neutralized, and wherein the microcellulose production is integrated to production of a pulp mill such that at least part of chemicals used in the acidification, acid hydrolysis and/or neutralization is produced by an integrated chemical recovery process of the pulp mill.

Method to product microcellulose

The present invention relates to a process for producing microcellulose comprising subjecting fibrous cellulosic material to acid hydrolysis at a temperature of at least 40&#xb0; C. and at a consistency of at least 8% on dry weight of the cellulose, wherein the amount of added acid is from 0.2 to 2%, preferably from 0.5 to 1.5% on dry weight of the cellulose.

Method to produce microcellulose

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Tervakoski, Finland

Olli Dahl