The use of thermochemical pretreatments to improve the anaerobic biodegradability and biochemical methane potential of the sugarcane bagasse

Costa, Adriana Guimarães; Pinheiro, Gleycielle Cavalcante; Pinheiro, Fábio; Santos, André Bezerra dos; Santaella, Sandra Tédde; Leitão, Renato Carrhá

doi:10.1016/j.cej.2014.03.060

Cited by 62 publications

(36 citation statements)

References 65 publications

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“…In fact, temperature was found to be the most influencing independent variable. The higher the temperature, the higher the anaerobic digestion performance (Costa et al, 2014). Similarly, pulp and paper mill wastewater was pretreated using 12 different methods and the best one was hydrothermal pretreatment at 150 ºC, which caused the disruption of chemical bonds in cell walls and membranes (Bayr et al, 2013).…”

Section: Effect Of Pretreatments On the Anaerobic Digestion Rate And mentioning

confidence: 99%

Comparing pretreatment methods for improving microalgae anaerobic digestion: Thermal, hydrothermal, microwave and ultrasound

Passos

Carretero

Ferrer

2015

Chemical Engineering Journal

175

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. lipids. This was attributed to the macromolecular and cell wall composition of the main microalgae species composing the biomass, i.e. Monoraphidium sp. and Stigeoclonium sp. Furthermore, the methane yield was increased by 72% for thermal, 28% for hydrothermal and 21% for microwave pretreatments, whereas no significant increase was found for ultrasonication as compared to control.Outstanding results of the thermal pretreatment should be validated in prospective pilot-scale studies in order to quantify the potential increase in biogas production upon continuous operation.

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Section: Effect Of Pretreatments On the Anaerobic Digestion Rate And mentioning

confidence: 99%

Comparing pretreatment methods for improving microalgae anaerobic digestion: Thermal, hydrothermal, microwave and ultrasound

Passos

Carretero

Ferrer

2015

Chemical Engineering Journal

175

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“…According to researchers in the field, the production and use of biogas in these ways would lead to higher overall conversion efficiencies than through the direct combustion of sugarcane LCM in conventional, low‐efficiency boilers (Geo Energética, private communication). One clear disadvantage of this approach includes the long hydraulic retention times involved with the AD of solids, especially those with high recalcitrance such as sugarcane LCM: while vinasse is usually digested in 24 h, solids may require several days or weeks for digestion …”

Section: Current Types Of Portfolio Diversification In Sugarcane Millsmentioning

confidence: 99%

“…One clear disadvantage of this approach includes the long hydraulic retention times involved with the AD of solids, especially those with high recalcitrance such as sugarcane LCM: while vinasse is usually digested in 24 h, solids may require several days or weeks for digestion. 32,33 Another alternative is to upgrade biogas through the removal of CO 2 and other impurities (such as H 2 S) to generate a stream with a minimum CH 4 content of 96.5% v/v, 34 commonly referred to as biomethane. The simplest destination for this product is commercial sale through injection in the natural gas grid, although this alternative is quite restricted for sugarcane mills in view of the limited grid span available in Brazil.…”

Section: Biogas From Anaerobic Digestionmentioning

confidence: 99%

Beyond ethanol, sugar, and electricity: a critical review of product diversification in Brazilian sugarcane mills

Klein

Sampaio

Mantelatto

et al. 2019

Biofuels Bioprod Bioref

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Process integration is an interesting option to reduce costs and improve the economic viability of new processes in sugarcane mills. Brazil has a prolific sugar‐energy sector, with hundreds of sugarcane mills that could possibly act as sources of carbon, energy, and water for annexed plants. While many studies analyze the integration of new technologies into sugarcane biorefineries as greenfield plants, the assessment and establishment of integrated processes into existing plants will help detecting process bottlenecks and enabling the required levels of integration to be better understood prior to designing a full‐scale, greenfield biorefinery. The present review provides an overview of the possibilities for sugarcane mills to diversify the portfolio of products from sugarcane biomass – beyond ethanol, sugar, and electric energy. The work initially considers the integrated production of market‐ready sugarcane‐derived products, such as animal feed, industrial salts, and hydrocarbons in existing Brazilian plants. Finally, the study outlines the prospects for future integration of non‐traditional process alternatives in sugarcane mills, namely bioplastics, organic acids, molecular hydrogen, and advanced lignocellulosic compounds. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd.

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“…The best delignification result obtained by the authors entails use of 4% sulphuric acid at a temperature of 121 °C and a delignification time of 3 h. Costa et al . in 2014 investigated various pre‐treatment options such as use of acid, alkaline and hydrothermal pre‐treatment on sugarcane bagasse so as to increase its anaerobic digestibility and methane production potential.…”

Section: Optimization Of Sugarcane Bagasse Pre‐treatmentmentioning

confidence: 99%

“…It is worth stating that although the aforementioned optimization methods considered various pre‐treatment operating conditions, they are, however, limited based on the fact that only one kind of pre‐treatment method was considered except for that of Costa et al . which considered more than one option of pre‐treatment.…”

Section: Optimization Of Sugarcane Bagasse Pre‐treatmentmentioning

confidence: 99%

Assessment of pre‐treatment technologies for bioethanol production from sugarcane bagasse considering economics and environmental impact

Crimes

Isafiade

Fraser

et al. 2016

Asia-Pacific J Chem Eng

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This work involves the assessment of various pre-treatment methods for the production of bioethanol in South Africa from sugarcane bagasse. The possibility of producing methane was also considered. The pre-treatment methods that have been modelled are acid pre-hydrolysis, steam explosion (acid-catalysed and un-catalysed), delignification with sodium hydroxide, acid hydrolysis and enzymatic hydrolysis. These pre-treatment options were arranged in a superstructure, and optimization was performed by decomposing the superstructure into eight possible flowsheets. These flowsheets were then optimized in General Algebraic Modelling Systems by using economic and environmental objective functions sequentially. The solution space was used to evaluate the possible flowsheets in terms of both objectives. Steam explosion pre-treatment would be recommended for the production of only methane. Acid hydrolysis can be added to steam explosion in order to produce glucose (for bioethanol production), and this increases profitability and reduces environmental impact of the steam explosion only flowsheet; however, the glucose flowrate from the steam explosion with acid hydrolysis flowsheet is low. The steam explosion with enzymatic hydrolysis flowsheet would be recommended to produce a higher glucose flowrate; however, the environmental impact of this flowsheet may be large if the electricity consumption of enzyme production is large. Figure 2. Block flow diagram superstructure for pre-treatment of sugarcane bagasse for the production of bioethanol and biomethane.Figure 3. Detailed superstructure for pre-treatment of sugarcane bagasse.Figure 4. Decomposed superstructure for pre-treatment of sugarcane bagasse.Figure 9. Revenues and costs for models with 25% sodium hydroxide recycle cost.

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The use of thermochemical pretreatments to improve the anaerobic biodegradability and biochemical methane potential of the sugarcane bagasse

Cited by 62 publications

References 65 publications

Comparing pretreatment methods for improving microalgae anaerobic digestion: Thermal, hydrothermal, microwave and ultrasound

Comparing pretreatment methods for improving microalgae anaerobic digestion: Thermal, hydrothermal, microwave and ultrasound

Beyond ethanol, sugar, and electricity: a critical review of product diversification in Brazilian sugarcane mills

Assessment of pre‐treatment technologies for bioethanol production from sugarcane bagasse considering economics and environmental impact

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