Modelling of the Lenzing SO2 recovery process and validation with plant data

Steindl, Michael; Wolfinger, Martin; Friedl, Anton; Weber, Hedda K.; Sixta, Herbert

doi:10.1016/j.jclepro.2006.08.027

Cited by 3 publications

(2 citation statements)

References 7 publications

(1 reference statement)

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“…Several approaches tracing pathways and guidelines towards the conversion of pulping factories into lignocellulosic biorefineries (LCBR) can be found in the literature for kraft pulping [11][12][13][14], soda-AQ [15,16], organosolv [17][18][19], or SEW process [9,10]. Nevertheless, only a few contributions have been studied in the case of sulfite pulping [20,21]. The investment activity in this field reveals the importance of transforming traditional pulping factories into integrated LCBR, increasing the profit margin in the existing pulp mills.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Lignocellulosic Macrocomponents in the Wastewater Streams of a Sulfite Pulp Mill: A Preliminary Biorefining Approach

Llano

García-Quevedo

Quijorna

et al. 2015

Journal of Chemistry

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The evolution of lignin, five- and six-carbon sugars, and other decomposition products derived from hemicelluloses and cellulose was monitored in a sulfite pulp mill. The wastewater streams were characterized and the mass balances throughout digestion and total chlorine free bleaching stages were determined. Summative analysis in conjunction with pulp parameters highlights some process guidelines and valorization alternatives towards the transformation of the traditional factory into a lignocellulosic biorefinery. The results showed a good separation of cellulose (99.64%) during wood digestion, with 87.23% of hemicellulose and 98.47% lignin dissolved into the waste streams. The following steps should be carried out to increase the sugar content into the waste streams: (i) optimization of the digestion conditions increasing hemicellulose depolymerization; (ii) improvement of the ozonation and peroxide bleaching stages, avoiding deconstruction of the cellulose chains but maintaining impurity removal; (iii) fractionation of the waste water streams, separating sugars from the rest of toxic inhibitors for 2nd generation biofuel production. A total of 0.173 L of second-generation ethanol can be obtained in the spent liquor per gram of dry wood. The proposed methodology can be usefully incorporated into other related industrial sectors.

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Section: Introductionmentioning

confidence: 99%

Evolution of Lignocellulosic Macrocomponents in the Wastewater Streams of a Sulfite Pulp Mill: A Preliminary Biorefining Approach

Llano

García-Quevedo

Quijorna

et al. 2015

Journal of Chemistry

View full text Add to dashboard Cite

show abstract

“…Michael Steindl, Martin G. Wolfinger, Anton Friedl, Hedda K. Weber and Herbert Sixta from Wood K-Plus, Lenzing R&D and Lenzing Technik GmbH and Vienna University of Technology in Austria authored a paper titled, ''Modelling of the Lenzing SO 2 Recovery Process and Validation with Plant Data'' [16]. Mass balances were performed for the recovery absorption stages of a magnesium bisulphite pulping process to obtain accurate basic data for further process simulation.…”

Section: Cleaner Production With Reduced Emissions and Wastewatermentioning

confidence: 99%