Lignocellulose biohydrogen: Practical challenges and recent progress

Kumar, Gopalakrishnan; Bakonyi, Péter; Periyasamy, Selvakumar; Kim, Jun Seok; Nemestóthy, Nándor; Bélafi–Bakó, Katalin

doi:10.1016/j.rser.2015.01.042

Cited by 257 publications

(81 citation statements)

References 120 publications

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“…This value is comparable to 60.2 mL H 2 /g obtained in the fermentation of acid treated soybean straw by an enriched mixed culture dominated C. butyricum [50]. However, according to Kumar et al [51] the results in the literature diverge widely, from 31.6 to 176 mL H 2 /g biomass dry weight, and comparisons are sometimes difficult due to the variable lignin, cellulose and hemicelluloses ratios in the lignocellulosic matrix and to the diversity and efficiency of possible pretreatment and saccharification combinations.…”

Section: Fermentative Hydrogen and Butyrate Productionsupporting

confidence: 71%

Development of an Energy Biorefinery Model for Chestnut (Castanea sativa Mill.) Shells

et al. 2017

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Chestnut shells (CS) are an agronomic waste generated from the peeling process of the chestnut fruit, which contain 2.7-5.2% (w/w) phenolic compounds and approximately 36% (w/w) polysaccharides. In contrast with current shell waste burning practices, this study proposes a CS biorefinery that integrates biomass pretreatment, recovery of bioactive molecules, and bioconversion of the lignocellulosic hydrolyzate, while optimizing materials reuse. The CS delignification and saccharification produced a crude hydrolyzate with 12.9 g/L of glucose and xylose, and 682 mg/L of gallic acid equivalents. The detoxification of the crude CS hydrolyzate with 5% (w/v) activated charcoal (AC) and repeated adsorption, desorption and AC reuse enabled 70.3% (w/w) of phenolic compounds recovery, whilst simultaneously retaining the soluble sugars in the detoxified hydrolyzate. The phenols radical scavenging activity (RSA) of the first AC eluate reached 51.8 ± 1.6%, which is significantly higher than that of the crude CS hydrolyzate (21.0 ± 1.1%). The fermentation of the detoxified hydrolyzate by C. butyricum produced 10.7 ± 0.2 mM butyrate and 63.9 mL H 2 /g of CS.Based on the obtained results, the CS biorefinery integrating two energy products (H 2 and calorific power from spent CS), two bioproducts (phenolic compounds and butyrate) and one material reuse (AC reuse) constitutes a valuable upgrading approach for this yet unexploited waste biomass.

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Section: Fermentative Hydrogen and Butyrate Productionsupporting

confidence: 71%

Development of an Energy Biorefinery Model for Chestnut (Castanea sativa Mill.) Shells

et al. 2017

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“…chrysosporium, Ceriporiala cerata, Cyathus stercolerus, C. subvermispora, Pycnoporus cinnarbarinus, and Pleurotus ostreaus produce enzymes which are involve in lignin degradation [14,57].…”

Section: Lignin-degrading Enzymes From Fungimentioning

confidence: 99%

“…Among the known species of white-rot fungi used until now, Phanerochaete chrysosporium because of considerable growth ratio and remarkable reduction of lignin potentials has the highest productivity [10][11][12]. Moreover, using white rot fungi consume less environmental damage and less energy conception [13,14]. Through the biological process effective lignin degradation relies on the lignolytic enzymes presented by basidiomycete such as lignin peroxidase, manganese peroxidase and laccase [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Lignin Degradation by Fungal Pretreatment: A Review

Madadi¹,

Abbas²

2017

J Plant Pathol Microbiol

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Lignin is regarded as the most plentiful aromatic polymer contains both non-phenolic and phenolic structures. It makes the integral part of secondary wall and plays a significant role in water conduction in vascular plants. Many fungi, bacteria and insects have ability to decrease this lignin by producing enzymes. Among these fungi are the major player in degradation of lignin. These fungi produce enzymes such as lignin peroxidases and laccases. The well-known fungi which degrades lignin are white, brown, soft-rot fungi, and deuteromycetes. Currently these fungi are utilized to reduce lignin to produce ecofriendly bioenergy. The primary aim of this paper is to describe the lignin degradation by biological pre-treatment using fungi (white-, brown-soft-rot fungi and molds), as well as biochemical application. Besides, Molecular methods and enzymes regulation engaged in fungal pre-treatment and some of the factors affecting pretreatment will also be briefly discussed.

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“…Looking at straw for example, 2.3 billion tons of straw were available in 2011, which has the theoretical potential of making 560 million tons of ethanol [32]. Climate and water needs for lignocellulose vary depending on the source of lignocellulose that is used [33]. There is an incentive to utilize this non-food crop in lieu of traditional corn.…”

Section: Lignocellulosementioning

confidence: 99%

Global Biofuels at the Crossroads: An Overview of Technical, Policy, and Investment Complexities in the Sustainability of Biofuel Development

et al. 2017

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Biofuels have the potential to alter the transport and agricultural sectors of decarbonizing societies. Yet, the sustainability of these fuels has been questioned in recent years in connection with food versus fuel trade-offs, carbon accounting, and land use. Recognizing the complicated playing field for current decision-makers, we examine the technical attributes, policy, and global investment activity for biofuels (primarily liquids). Differences in feedstock and fuel types are considered, in addition to policy approaches of major producer countries. Issues with recent, policy-driven trade developments are highlighted to emphasize how systemic complexities associated with sustainability must also be managed. We conclude with near-term areas to watch.

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Lignocellulose biohydrogen: Practical challenges and recent progress

Cited by 257 publications

References 120 publications

Development of an Energy Biorefinery Model for Chestnut (Castanea sativa Mill.) Shells

Development of an Energy Biorefinery Model for Chestnut (Castanea sativa Mill.) Shells

Lignin Degradation by Fungal Pretreatment: A Review

Global Biofuels at the Crossroads: An Overview of Technical, Policy, and Investment Complexities in the Sustainability of Biofuel Development

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