Process analysis of superheated steam pre-treatment of wheat straw and its relative effect on ethanol selling price

Barchyn, Dave; Cenkowski, Stefan

doi:10.18331/brj2015.1.4.4

Cited by 14 publications

(2 citation statements)

References 40 publications

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“…The energy consumed in the dairy sector is mostly derived from the burning of fossils such as oil, natural gas, and coal. This means two things: (1) a non-negligible contribution to environmental pollution; (2) a dependence on fossil fuel supplies, which makes food production a hostage of the changing prices due to international crises [7][8][9][10][11]. A valid way to help to reduce these problems is the use of energy improvement strategies [6].…”

Section: Introductionmentioning

confidence: 99%

Exergetic Analysis and Exergy Loss Reduction in the Milk Pasteurization for Italian Cheese Production

Friso

Bortolini

Tono³

2020

Energies

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The cheese industry has high energy consumption, and improvements to plant efficiency may lead to a reduction of its environmental impact. A survey on a sample of small-medium Italian cheese factories was carried out in order to assess the efficiency of heat recovery of the milk pasteurization equipment for the cheese production. Then, an exergetic analysis to calculate the related exergy loss was carried out together with a cost-benefit analysis to identify the optimized value of the heat efficiency. The exergy loss reduction was determined throughout an exergy analysis that takes into account this last value and the comparison with the previous exergy losses. Finally, the feasibility and the consequent additional reduction of exergy losses were verified, if a cogeneration heat and power (CHP) combined to the pasteurization equipment is assumed. Results show a current heat recovery efficiency of 93.2% in the Italian cheese factories; a close connection between the exergetic losses and the efficiency of the heat recovery exchanger; the optimized recovery efficiency equal to 97.3% obtained from the cost-benefit analysis; a related important exergetic loss reduction of −45% in the heat exchangers, as a second result of the exergetic analysis; a similar reduction of the exergy loss (−42%) of the whole system, as a third result of the exergetic analysis; a total exergy loss reduction of 22.9 kJ kg−1milk, which corresponds to a lower environmental impact due to CO2 reduction; a further reduction of the exergy loss of −10% when the cogeneration heat and power CHP are used.

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Section: Introductionmentioning

confidence: 99%

Exergetic Analysis and Exergy Loss Reduction in the Milk Pasteurization for Italian Cheese Production

Friso

Bortolini

Tono³

2020

Energies

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“…The global production of fibres has shown a constant increase in the past few decades (Akia et al, 2014;Barchyn and Cenkowski, 2014;Pothiraj et al, 2015). According to the Food and Agriculture Organization of the United Nations (FAO), the annual wool production is estimated at approximately 2.1 million tonnes per year (International Wool Textile Organization: IWTO, 2015).…”

Section: Introductionmentioning

confidence: 99%

Dry anaerobic digestion of lignocellulosic and protein residues

2015

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HIGHLIGHTSAD digestion/co-digestion of wool and wheat straw were evaluated with TS contents of between 6 to 30%.Methane yield of wheat straw was highest at TS of 21% and lowest at TS of 30%.Methane yield of wool textile was highest at TS of 13% and lowest at TS of 30%.The addition of enzyme on wool and wheat straw led to improvement in methane yield at TS of 13%.Synergetic effects were observed when these substrates were co-digested. Utilisation of wheat straw and wool textile waste in dry anaerobic digestion (AD) process was investigated. Dry-AD of the individual substrates as well as co-digestion of those were evaluated using different total solid (TS) contents ranging between 6 to 30%. Additionally, the effects of the addition of nutrients and cellulose-or protein-degrading enzymes on the performance of the AD process were also investigated. Dry-AD of the wheat straw resulted in methane yields of 0.081 -0.200 Nm 3 CH4/kgVS with the lowest and highest values obtained at 30 and 21% TS, respectively. The addition of the cellulolytic enzymes could significantly increase the yield in the reactor containing 13% TS (0.231 Nm 3 CH4/kg VS). Likewise, degradation of wool textile waste was enhanced significantly at TS of 13% with the addition of the protein-degrading enzyme (0.131 Nm 3 CH4/kg VS). Furthermore, the co-digestion of these two substrates showed higher methane yields compared with the methane potentials calculated for the individual fractions at all the investigated TS contents due to synergetic effects and better nutritional balance. © 2015 BRTeam. All rights reserved. Kabir et al. / Biofuel Research Journal 8 (2015) [309][310][311][312][313][314][315][316] Please cite this article as: Kabir M.M., Taherzadeh M.J., Sárvári Horváth I. Dry anaerobic digestion of lignocellulosic and protein residues. ARTICLE INFO ABSTRACT

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A comparative study of lignocellulosic ethanol productivities by Kluyveromyces marxianus and Saccharomyces cerevisiae

Sandoval-Nuñez¹,

Arellano‐Plaza²,

Gschaedler³

et al. 2017

Clean Techn Environ Policy

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Process analysis of superheated steam pre-treatment of wheat straw and its relative effect on ethanol selling price

Cited by 14 publications

References 40 publications

Exergetic Analysis and Exergy Loss Reduction in the Milk Pasteurization for Italian Cheese Production

Exergetic Analysis and Exergy Loss Reduction in the Milk Pasteurization for Italian Cheese Production

Dry anaerobic digestion of lignocellulosic and protein residues

A comparative study of lignocellulosic ethanol productivities by Kluyveromyces marxianus and Saccharomyces cerevisiae

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