A mathematically-based framework for evaluating the technical and economic potential of integrating bioenergy production within pulp and paper mills

Machani, Mahdi; Nourelfath, Mustapha; D’Amours, Sophie

doi:10.1016/j.biombioe.2014.02.024

Cited by 37 publications

(27 citation statements)

References 18 publications

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“…PMS contains 25-75 % carbohydrate content and offers distinct advantages as a raw material for biofuel production which includes: i) negative feedstock cost, ii) no requirement for high temperature chemical and mechanical pretreatment (as the lignin structure and content of the biomass has already been disrupted and removed during the pulp making process) making it amenable to enzymatic hydrolysis, iii) no additional unit operations are required to remove inhibitory compounds (as the PMS is freed of inhibitors during the primary clarification step) iv) potential integration of process into a preexisting industrial infrastructure at the paper mill, and v) can greatly alleviate economic and environmental impacts (Chen et al, 2014b). Because of these features, PMS is a very attractive feedstock for an emerging biorefining industry based on a biochemical conversion pathway featuring enzymatic hydrolysis and fermentation process to produce biofuels (Machani et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Bioconversion of paper mill sludge to bioethanol in the presence of accelerants or hydrogen peroxide pretreatment

Gurram

Al-Shannag

Lecher

et al. 2015

Bioresource Technology

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In this study we investigated the technical feasibility of convert paper mill sludge into fuel ethanol. This involved the removal of mineral fillers by using either chemical pretreatment or mechanical fractionation to determine their effects on cellulose hydrolysis and fermentation to ethanol. In addition, we studied the effect of cationic polyelectrolyte (as accelerant) addition and hydrogen peroxide pretreatment on enzymatic hydrolysis and fermentation. We present results showing that removing the fillers content (ash and calcium carbonate) from the paper mill sludge increases the enzymatic hydrolysis performance dramatically with higher cellulose conversion at faster rates. The addition of accelerant and hydrogen peroxide pretreatment further improved the hydrolysis yields by 16% and 25% (g glucose / g cellulose), respectively with the de-ashed sludge. The fermentation process of produced sugars achieved up to 95% of the maximum theoretical ethanol yield and higher ethanol productivities within 9h of fermentation.

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Section: Introductionmentioning

confidence: 99%

Bioconversion of paper mill sludge to bioethanol in the presence of accelerants or hydrogen peroxide pretreatment

Gurram

Al-Shannag

Lecher

et al. 2015

Bioresource Technology

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“…A pulp/paper mill could be converted to an integrated forest biorefinery (IFBR) (Machani et al 2014). Typically it is located close to forest resources and has ready-to-use facilities and personnel.…”

Section: Introductionmentioning

confidence: 99%

“…Typically it is located close to forest resources and has ready-to-use facilities and personnel. With the current significant reduction of paper demand, many pulp/paper mills in North America are struggling, and they are willing to diversify their products and generate value-added biofuels and biochemicals (Machani et al 2014). The kraft pulping process removes most lignin and hemicelluloses, leaving cellulose as the dominant constituent in the pulp.…”

Section: Introductionmentioning

confidence: 99%

Optimization and Scale-Up of Enzymatic Hydrolysis of Wood Pulp for Cellulosic Sugar Production

Hu¹,

Zhu²,

Fang³

et al. 2016

BioResources

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With the decreased demand for pulp and paper worldwide, the reorganization of pulp and paper mills for cellulosic sugar production is possible. To maximize cellulosic sugar production from the wood pulp with minimum resources, the effects of pH, buffer system, temperature, enzyme loadings, pulp concentrations, and mixing modes on enzymatic hydrolysis were investigated, one factor at a time. Temperature played an important role in enzymatic hydrolysis. When the temperature was lower than 45 °C, the sugar production declined dramatically to almost half of the maximum value. Increasing enzyme dosage, increasing pulp concentration, and adding xylanase increased sugar production. The intermittent manual mixing mode generated higher concentrations of sugars and could be used for large-scale production. At pilot-scale, the diverted pulp for the pulping process was directly hydrolyzed without any treatment, and the residue after hydrolysis was hydrolyzed by adding fresh enzymes. This study provides insight on economically feasible enzymatic hydrolysis of wood pulp at large-scale cellulosic sugar production.

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“…green biomass, pellets, biogas). A number of emerging business streams are being developed at this time through the application of biorefineries and usage of the biomass (Stuart and El-Halwagi 2012;Machani et al 2014).…”

Section: Value Chain Managementmentioning

confidence: 99%

Operations Research challenges in forestry: 33 open problems

et al. 2015

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Artículo de publicación ISIForestry has contributed many problems to the Operations Research (OR) community. At the same time, OR has developed many models and solution methods for use in forestry. In this article, we describe the current status of research on the application of OR methods to forestry and a number of research challenges or open questions that we believe will be of interest to both researchers and practitioners. The areas covered include strategic, tactical and operational planning, firemanagement, conservation and the use ofORto address environmental concerns. The paper also considers more general methodological areas that are important to forestry including uncertainty,multiple objectives and hierarchical planning

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A mathematically-based framework for evaluating the technical and economic potential of integrating bioenergy production within pulp and paper mills

Cited by 37 publications

References 18 publications

Bioconversion of paper mill sludge to bioethanol in the presence of accelerants or hydrogen peroxide pretreatment

Bioconversion of paper mill sludge to bioethanol in the presence of accelerants or hydrogen peroxide pretreatment

Optimization and Scale-Up of Enzymatic Hydrolysis of Wood Pulp for Cellulosic Sugar Production

Operations Research challenges in forestry: 33 open problems

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