Ethanolic fermentation of phosphoric acid hydrolysates from olive tree pruning

Romero, Inmaculada; Moya, Manuel; Sánchez, Sebastián; Ruiz, Encarnación; Bravo, Vicente

doi:10.1016/j.indcrop.2006.08.008

Cited by 62 publications

(36 citation statements)

References 19 publications

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“…Where, W 1 = Weight of potato peel sample (g) W 2 = Weight of filter crucible after ignition in muffle furnace -Ash sample (g) W 3 = Weight of filter crucible after vacuum filtration -Lignin and Ash (g) T 110 = As received sample conversion factor  Moisture analysis Moisture content of a sample of potato peel is measured by weighing out a recorded amount of sample and placing it in an oven at 110 0 C until the dry weight of the sample is constant over a 2 hour period. The sample is then cooled and its weight is recorded.…”

Section: Other Analysesmentioning

confidence: 99%

Kinetic Modelling of Dilute Acid Hydrolysis of Lignocellulosic Biomass

Lenihan¹,

Orozco²,

O'Neill³

et al. 2011

Biofuel Production-Recent Developments and Prospects

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Section: Other Analysesmentioning

confidence: 99%

Kinetic Modelling of Dilute Acid Hydrolysis of Lignocellulosic Biomass

Lenihan¹,

Orozco²,

O'Neill³

et al. 2011

Biofuel Production-Recent Developments and Prospects

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“…Due to the complex nature of this composite, lignocellulose is recalcitrant to degradation by enzymes without prior physical and chemical pretreatments (Girio et al, 2010;Hendriks and Zeeman, 2009;Wyman et al, 2009). Many pretreatment options have been described (Alvira et al, 2010) with dilute acid hydrolysis being one of the more widely investigated (Bosch et al, 2010;Lee et al, 1999;Romero et al, 2007;Wang et al, 2009;Zhu et al, 2009). Each pretreatment presents advantages and disadvantages that are detailed in reviews Hendriks and Zeeman, 2009;Wyman et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Effect of reduced sulfur compounds on the fermentation of phosphoric acid pretreated sugarcane bagasse by ethanologenic Escherichia coli

Nieves

Geddes

Miller

et al. 2011

Bioresource Technology

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“…In fact, the use of residues from agriculture and agroindustry as feedstock can improve the economics and the sustainability of producing ethanol from lignocellulosic biomass [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

2nd generation lignocellulosic bioethanol: is torrefaction a possible approach to biomass pretreatment?

Chiaramonti

Rizzo

Prussi

et al. 2011

Biomass Conv. Bioref.

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Biomass pretreatement is a key and energyconsuming step for lignocellulosic ethanol production; it is largely responsible for the energy efficiency and economic sustainability of the process. A new approach to biomass pretreatment for the lignocellulosic bioethanol chain could be mild torrefaction. Among other effects, biomass torrefaction improves the grindability of fibrous materials, thus reducing energy demand for grinding the feedstock before hydrolysis, and opens the biomass structure, making this more accessible to enzymes for hydrolysis. The aim of the preliminary experiments carried out was to achieve a first understanding of the possibility to combine torrefaction and hydrolysis for lignocellulosic bioethanol processes, and to evaluate it in terms of sugar and ethanol yields. In addition, the possibility of hydrolyzing the torrefied biomass has not yet been proven. Biomass from olive pruning has been torrefied at different conditions, namely 180-280°C for 60-120 min, grinded and then used as substrate in hydrolysis experiments. The bioconversion has been carried out at flask scale using a mixture of cellulosolytic, hemicellulosolitic, β-glucosidase enzymes, and a commercial strain of Saccharomyces cerevisiae. The experiments demonstrated that torrefied biomass can be enzymatically hydrolyzed and fermented into ethanol, with yields comparable with grinded untreated biomass and saving electrical energy. The comparison between the bioconversion yields achieved using only raw grinded biomass or torrefied and grinded biomass highlighted that: (1) mild torrefaction conditions limit sugar degradation to 5-10%; and (2) torrefied biomass does not lead to enzymatic and fermentation inhibition. Energy consumption for ethanol production has been preliminary estimated, and three different pretreatment steps, i.e., raw biomass grinding, biomass-torrefaction grinding, and steam explosion were compared. Based on preliminary results, steam explosion still has a significant advantage compared to the other two process chains.

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Ethanolic fermentation of phosphoric acid hydrolysates from olive tree pruning

Cited by 62 publications

References 19 publications

Kinetic Modelling of Dilute Acid Hydrolysis of Lignocellulosic Biomass

Kinetic Modelling of Dilute Acid Hydrolysis of Lignocellulosic Biomass

Effect of reduced sulfur compounds on the fermentation of phosphoric acid pretreated sugarcane bagasse by ethanologenic Escherichia coli

2nd generation lignocellulosic bioethanol: is torrefaction a possible approach to biomass pretreatment?

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