1
|
Sapouna I, van Erven G, Heidling E, Lawoko M, McKee LS. Impact of Extraction Method on the Structure of Lignin from Ball-Milled Hardwood. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2023; 11:15533-15543. [PMID: 37920800 PMCID: PMC10618921 DOI: 10.1021/acssuschemeng.3c02977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 10/06/2023] [Indexed: 11/04/2023]
Abstract
Understanding the structure of hardwoods can permit better valorization of lignin by enabling the optimization of green, high-yield extraction protocols that preserve the structure of wood biopolymers. To that end, a mild protocol was applied for the extraction of lignin from ball-milled birch. This made it possible to understand the differences in the extractability of lignin in each extraction step. The fractions were extensively characterized using 1D and 2D nuclear magnetic resonance spectroscopy, size exclusion chromatography, and pyrolysis-gas chromatography-mass spectrometry. This comprehensive characterization highlighted that lignin populations extracted by warm water, alkali, and ionic liquid/ethanol diverged in structural features including subunit composition, interunit linkage content, and the abundance of oxidized moieties. Moreover, ether- and ester-type lignin-carbohydrate complexes were identified in the different extracts. Irrespective of whether natively present in the wood or artificially formed during extraction, these complexes play an important role in the extractability of lignin from ball-milled hardwood. Our results contribute to the further improvement of lignin extraction strategies, for both understanding lignin as present in the lignocellulosic matrix and for dedicated lignin valorization efforts.
Collapse
Affiliation(s)
- Ioanna Sapouna
- Wallenberg
Wood Science Center, KTH Royal Institute
of Technology, 114 28 Stockholm, Sweden
- Division
of Glycoscience, Department of Chemistry, KTH Royal Institute of Technology, AlbaNova University Center, 114 21 Stockholm, Sweden
| | - Gijs van Erven
- Wageningen
Food and Biobased Research, Wageningen University
& Research, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands
- Laboratory
of Food Chemistry, Wageningen University
& Research, Bornse
Weilanden 9, 6708 WG Wageningen, The Netherlands
| | - Emelie Heidling
- Division
of Glycoscience, Department of Chemistry, KTH Royal Institute of Technology, AlbaNova University Center, 114 21 Stockholm, Sweden
| | - Martin Lawoko
- Wallenberg
Wood Science Center, KTH Royal Institute
of Technology, 114 28 Stockholm, Sweden
- Division
of Wood Chemistry and Pulp Technology, Department of Fiber and Polymer
Technology, KTH Royal Institute of Technology, 114 28 Stockholm, Sweden
| | - Lauren Sara McKee
- Wallenberg
Wood Science Center, KTH Royal Institute
of Technology, 114 28 Stockholm, Sweden
- Division
of Glycoscience, Department of Chemistry, KTH Royal Institute of Technology, AlbaNova University Center, 114 21 Stockholm, Sweden
| |
Collapse
|
2
|
Pandey AK, Negi S. Enhanced ethanol production using hydrophobic resin detoxified Pine forest litter hydrolysate and integrated fermentation process development supplementing molasses. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-30185-5. [PMID: 37801246 DOI: 10.1007/s11356-023-30185-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 09/26/2023] [Indexed: 10/07/2023]
Abstract
Globally escalating ethanol demand necessitates the use of hybrid technologies integrating first- and second-generation biofuel feedstocks for achieving the futuristic targets of gasoline replacement with bioethanol. In present study, an optimized two-step sequential pre-treatment (first dilute alkali, then dilute acid) of Pine forest litter (PFL) was developed. Furthermore, the saccharification of pre-treated PFL was optimized through Response Surface Methodology using Box-Behnken Design, wherein 0.558 g/g of reducing sugar was released under the optimized conditions (12.5% w/v of biomass loading, 10 FPU/g of PFL enzyme loading, 0.15% v/v Tween-80 and 48 h incubation time). Moreover, during hydrolysate fermentation using Saccharomyces cerevisiae NCIM 3288 strain, 22.51 ± 1.02 g/L ethanol was produced. Remarkably, hydrophobic resin (XAD-4) treatment of PFL hydrolysate, significantly removed inhibitors (Furfural, 5-hydroxymethylfurfural and phenolics) and increased ethanol production to 27.38 ± 1.18 g/L. Furthermore, during fermentation of molasses supplemented PFL hydrolysate (total initial sugar: 100 ± 3.27 g/L), a maximum of 46.02 ± 2.08 g/L ethanol was produced with 0.482 g/g yield and 1.92 g/l/h productivity. These findings indicated that the integration of molasses to lignocellulosic hydrolysate, would be a promising hybrid technology for industrial ethanol production within existing bio-refinery infrastructure.
Collapse
Affiliation(s)
- Ajay Kumar Pandey
- Department of Life Sciences and Biotechnology, Chhatrapati Shahu Ji Maharaj University, Kanpur, Kanpur, 208024, Uttar Pradesh, India.
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, 211004, Uttar Pradesh, India.
| | - Sangeeta Negi
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, 211004, Uttar Pradesh, India
| |
Collapse
|
3
|
Bio-Wastes as Aggregates for Eco-Efficient Boards and Panels: Screening Tests of Physical Properties and Bio-Susceptibility. INFRASTRUCTURES 2022. [DOI: 10.3390/infrastructures7030026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
Screening tests were developed or adapted from RILEM recommendations, standards and past studies, and carried out to characterize some agro-industrial wastes and to assess their feasibility as aggregates for eco-efficient building composites. Spent coffee grounds, grape and olive press waste and hazelnut shells were used, as well as maritime pine chips as control material. Particle size distribution, loose bulk density, thermal conductivity and hygroscopicity properties were analysed. The selected bio-wastes did not show good thermal insulation properties if compared with some bio-wastes already studied and used for thermal insulation composites. Values of loose bulk density and thermal conductivity were between 325.6–550.5 kg/m3 and 0.078–0.107 W/(m·K); moisture buffering values higher than 2.0 g/(m2·%RH). Biological susceptibility to mould and termites were also tested, using not yet standardized methods. The low resistance to biological attack confirms one of the greatest drawbacks of using bio-wastes for building products. However, final products properties may be changed by adding other materials, pre-treatments of the wastes and the production process.
Collapse
|
4
|
Rapado P, Faba L, Ordóñez S. Influence of delignification and reaction conditions in the aqueous phase transformation of lignocellulosic biomass to platform molecules. BIORESOURCE TECHNOLOGY 2021; 321:124500. [PMID: 33310411 DOI: 10.1016/j.biortech.2020.124500] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/29/2020] [Accepted: 11/30/2020] [Indexed: 06/12/2023]
Abstract
The effect of oxidative and reductive delignification processes on the hydrolysis of pine sawdust at mild conditions (200-1000 ppm of HCl and 140-220 °C) is studied in this work. Dimers and reduced sugars are the main products obtained with the fresh sawdust (>82%), reaching a maximum liquid phase yield of 17% after 8 h, at the strongest conditions. This conversion increases up to almost 40% with the pretreated sawdust, obtaining selectivities higher than 87% of levulinic acid and a well-defined distribution of the relevant platform molecules (sugars, HMF, furfural, levulinic acid) as function of the severity of the reaction, decreasing the humins formation and being possible to define different conditions to maximize each yield. These conclusions were corroborated by the kinetic analysis, obtaining a clear decrease in the energy activation for all the individual steps involved in this process.
Collapse
Affiliation(s)
- Paula Rapado
- Catalysis, Reactors and Control Research Group (CRC), Dept. of Chemical and Environmental Engineering, University of Oviedo, Oviedo 33006, Spain
| | - Laura Faba
- Catalysis, Reactors and Control Research Group (CRC), Dept. of Chemical and Environmental Engineering, University of Oviedo, Oviedo 33006, Spain
| | - Salvador Ordóñez
- Catalysis, Reactors and Control Research Group (CRC), Dept. of Chemical and Environmental Engineering, University of Oviedo, Oviedo 33006, Spain.
| |
Collapse
|
5
|
Ferreira-Santos P, Zanuso E, Genisheva Z, Rocha CMR, Teixeira JA. Green and Sustainable Valorization of Bioactive Phenolic Compounds from Pinus By-Products. Molecules 2020; 25:molecules25122931. [PMID: 32630539 PMCID: PMC7356352 DOI: 10.3390/molecules25122931] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 01/17/2023] Open
Abstract
In Europe, pine forests are one of the most extended forests formations, making pine residues and by-products an important source of compounds with high industrial interest as well as for bioenergy production. Moreover, the valorization of lumber industry residues is desirable from a circular economy perspective. Different extraction methods and solvents have been used, resulting in extracts with different constituents and consequently with different bioactivities. Recently, emerging and green technologies as ultrasounds, microwaves, supercritical fluids, pressurized liquids, and electric fields have appeared as promising tools for bioactive compounds extraction in alignment with the Green Chemistry principles. Pine extracts have attracted the researchers’ attention because of the positive bioproperties, such as anti-inflammatory, antimicrobial, anti-neurodegenerative, antitumoral, cardioprotective, etc., and potential industrial applications as functional foods, food additives as preservatives, nutraceuticals, pharmaceuticals, and cosmetics. Phenolic compounds are responsible for many of these bioactivities. However, there is not much information in the literature about the individual phenolic compounds of extracts from the pine species. The present review is about the reutilization of residues and by-products from the pine species, using ecofriendly technologies to obtain added-value bioactive compounds for industrial applications.
Collapse
|
6
|
Malaret F, Gschwend FJV, Lopes JM, Tu WC, Hallett JP. Eucalyptus red grandis pretreatment with protic ionic liquids: effect of severity and influence of sub/super-critical CO 2 atmosphere on pretreatment performance. RSC Adv 2020; 10:16050-16060. [PMID: 35493672 PMCID: PMC9052920 DOI: 10.1039/d0ra02040k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 04/07/2020] [Indexed: 11/21/2022] Open
Abstract
Deconstruction of lignocellulosic biomass with low-cost ionic liquids (ILs) has proven to be a promising technology that could be implemented in a biorefinery to obtain renewable materials, fuels and chemicals. This study investigates the pretreatment efficacy of the ionoSolv pretreatment of Eucalyptus red grandis using the low-cost ionic liquid triethylammonium hydrogen sulfate ([N2220][HSO4]) in the presence of 20 wt% water at 10% solids loading. The temperatures investigated were 120 °C and 150 °C. Also, the influence of performing the pretreatment under sub-critical and supercritical CO2 was investigated. The IL used is very effective in deconstructing eucalyptus, producing cellulose-rich pulps resulting in enzymatic saccharification yields of 86% for some pretreatment conditions. It has been found that under a CO2 atmosphere, the ionoSolv process is pressure independent. The good performance of this IL in the pretreatment of eucalyptus is promising for the development of a large-scale ionoSolv pretreatment processes.
Collapse
Affiliation(s)
- Francisco Malaret
- Department of Chemical Engineering, Imperial College London London SW7 2AZ UK http://www.imperial.ac.uk/people/j.hallett +44 (0)2075945388
| | - Florence J V Gschwend
- Department of Chemical Engineering, Imperial College London London SW7 2AZ UK http://www.imperial.ac.uk/people/j.hallett +44 (0)2075945388
| | - Joana M Lopes
- High Pressure Process Group, Department of Chemical Engineering and Environmental Technology, University of Valladolid Spain
| | - Wei-Chien Tu
- Department of Chemical Engineering, Imperial College London London SW7 2AZ UK http://www.imperial.ac.uk/people/j.hallett +44 (0)2075945388
| | - Jason P Hallett
- Department of Chemical Engineering, Imperial College London London SW7 2AZ UK http://www.imperial.ac.uk/people/j.hallett +44 (0)2075945388
| |
Collapse
|
7
|
Pachapur VL, Kaur Brar S, Le Bihan Y. Integrated wood biorefinery: Improvements and tailor-made two-step strategies on hydrolysis techniques. BIORESOURCE TECHNOLOGY 2020; 299:122632. [PMID: 31889603 DOI: 10.1016/j.biortech.2019.122632] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 12/13/2019] [Accepted: 12/15/2019] [Indexed: 06/10/2023]
Abstract
This study categorized different pretreatment methods into mild (below 120 °C), normal (120-200 °C) and extreme conditions (above 200 °C) for selective approach with efficient wood hydrolysis for direct market applications. The model two-step strategy of selective normal-hydrolysis: steam explosion (170 °C for 30 min) with concentrating normal-hydrolysis: organosolv at (160 °C for 20 min) on hard/softwood will delivery individual fractions of hemicellulose, lignin, and cellulose with recovery rate above 95%. The first step releases C5 sugars with a recovery rate of 80% followed by the second step for C6 sugars with 95% rate and direct use of reduced sugars into C5 and C6 value-added products. The categorized conditions will ease the selection of the pretreatment method for the wood type and model strategy will increase the hydrolysis rate with greater simplicity and validity. The integrated wood biorefinery with two-step treatment is an in-house and closed-loop with endless industrial applications.
Collapse
Affiliation(s)
- Vinayak Laxman Pachapur
- Institut national de la recherche scientifique, Centre - Eau Terre Environnement, 490, Rue de la Couronne, Québec, QC G1K 9A9, Canada; Centre de recherche industrielle du Québec (CRIQ), Québec, QC, Canada.
| | - Satinder Kaur Brar
- Institut national de la recherche scientifique, Centre - Eau Terre Environnement, 490, Rue de la Couronne, Québec, QC G1K 9A9, Canada; Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, Ontario M3J 1P3, Canada.
| | - Yann Le Bihan
- Centre de recherche industrielle du Québec (CRIQ), Québec, QC, Canada
| |
Collapse
|
8
|
Zoghlami A, Paës G. Lignocellulosic Biomass: Understanding Recalcitrance and Predicting Hydrolysis. Front Chem 2019; 7:874. [PMID: 31921787 PMCID: PMC6930145 DOI: 10.3389/fchem.2019.00874] [Citation(s) in RCA: 204] [Impact Index Per Article: 40.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 12/04/2019] [Indexed: 12/11/2022] Open
Abstract
Lignocellulosic biomass (LB) is an abundant and renewable resource from plants mainly composed of polysaccharides (cellulose and hemicelluloses) and an aromatic polymer (lignin). LB has a high potential as an alternative to fossil resources to produce second-generation biofuels and biosourced chemicals and materials without compromising global food security. One of the major limitations to LB valorisation is its recalcitrance to enzymatic hydrolysis caused by the heterogeneous multi-scale structure of plant cell walls. Factors affecting LB recalcitrance are strongly interconnected and difficult to dissociate. They can be divided into structural factors (cellulose specific surface area, cellulose crystallinity, degree of polymerization, pore size and volume) and chemical factors (composition and content in lignin, hemicelluloses, acetyl groups). Goal of this review is to propose an up-to-date survey of the relative impact of chemical and structural factors on biomass recalcitrance and of the most advanced techniques to evaluate these factors. Also, recent spectral and water-related measurements accurately predicting hydrolysis are presented. Overall, combination of relevant factors and specific measurements gathering simultaneously structural and chemical information should help to develop robust and efficient LB conversion processes into bioproducts.
Collapse
Affiliation(s)
- Aya Zoghlami
- FARE Laboratory, INRAE, University of Reims Champagne-Ardenne, Reims, France
| | - Gabriel Paës
- FARE Laboratory, INRAE, University of Reims Champagne-Ardenne, Reims, France
| |
Collapse
|
9
|
Pires Nogueira D, Ferreira Rosa PR, Aparecida Seolatto A, Galeano Suarez CA, Ferreira Freitas F. Saccharification of Orange Bagasse Pre-treated with Calcium Hydroxide using an enzymatic blend Diluted Hydrochloric Acid. REVISTA ION 2019. [DOI: 10.18273/revion.v32n1-2018007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Enzymatic and dilute acid processes were applied to study the orange bagasse hydrolysis. The moisture, ashes, lignin, cellulose, and hemicellulose contents, of the orange peels, were quantified. The xylanase and cellulase enzymes activities were quantified, as well as their optimum pH and temperatures. The pre dried orange peel biomass was pre-treated with calcium hydroxide, at preestablished conditions. The hydrolysis followed a central composite factorial 2³ design. The cellulase activity was 28.05x10-6 FPU (Filter Paper Units)/m3, the optimum pH was 4.8 and the temperature was 60°C. The results for xylanase were an activity of 199.58x10-3 U/Kg, pH 5.2, and temperature 50°C. The acid hydrolysis TRS (total reducing sugars) values varied from (9.328±0.68 mg)*10-3 TRS per Kg of biomass to (30.15±0.31)*10-3 mg TRS per Kg biomass, the most significant factor was the temperature and the least the time. The enzymatic hydrolysis TRS values varied from (77.33±3.82)*10-3 mg TRS per Kg biomass to (99.66±0.62)*10-3 mg TRS per Kg biomass, the most significant factor was the concentration of cellulase and the least the xylanase concentration.
Collapse
|
10
|
Pires Nogueira D, Ferreira Rosa PR, Aparecida Seolatto A, Galeano Suarez CA, Ferreira Freitas F. Saccharification of Orange Bagasse Pre-treated with Calcium Hydroxide using an enzymatic blend Diluted Hydrochloric Acid. REVISTA ION 2019. [DOI: 10.18273/revion.v32n1-2019007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Enzymatic and dilute acid processes were applied to study the orange bagasse hydrolysis. The moisture, ashes, lignin, cellulose, and hemicellulose contents, of the orange peels, were quantified. The xylanase and cellulase enzymes activities were quantified, as well as their optimum pH and temperatures. The pre dried orange peel biomass was pre-treated with calcium hydroxide, at preestablished conditions. The hydrolysis followed a central composite factorial 2³ design. The cellulase activity was 28.05x10-6 FPU (Filter Paper Units)/m3, the optimum pH was 4.8 and the temperature was 60°C. The results for xylanase were an activity of 199.58x10-3 U/Kg, pH 5.2, and temperature 50°C. The acid hydrolysis TRS (total reducing sugars) values varied from (9.328±0.68 mg)*10-3 TRS per Kg of biomass to (30.15±0.31)*10-3 mg TRS per Kg biomass, the most significant factor was the temperature and the least the time. The enzymatic hydrolysis TRS values varied from (77.33±3.82)*10-3 mg TRS per Kg biomass to (99.66±0.62)*10-3 mg TRS per Kg biomass, the most significant factor was the concentration of cellulase and the least the xylanase concentration.
Collapse
|
11
|
Aristizábal-Marulanda V, Cardona Alzate CA, Martín M. An integral methodological approach for biorefineries design: Study case of Colombian coffee cut-stems. Comput Chem Eng 2019. [DOI: 10.1016/j.compchemeng.2019.03.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
12
|
Pires-Nogueira D, Ferreira-Rosa PR, Seolatto AA, Galeano-Suarez CA, Ferreira-Freitas F. Saccharification of Orange Bagasse Pre-treated with Calcium Hydroxide using an enzymatic blendDiluted Hydrochloric Acid. REVISTA ION 2019. [DOI: 10.18273/10.18273/revion.v32n1-2019007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Enzymatic and dilute acid processes were applied to study the orange bagasse hydrolysis. The moisture, ashes, lignin, cellulose, and hemicellulose contents, of the orange peels, were quantified. The xylanase and cellulase enzymes activities were quantified, as well as their optimum pH and temperatures. The pre dried orange peel biomass was pre-treated with calcium hydroxide, at preestablished conditions. The hydrolysis followed a central composite factorial 2³ design. The cellulase activity was 28.05x10-6 FPU (Filter Paper Units)/m3, the optimum pH was 4.8 and the temperature was 60°C. The results for xylanase were an activity of 199.58x10-3 U/Kg, pH 5.2, and temperature 50°C. The acid hydrolysis TRS (total reducing sugars) values varied from (9.328±0.68 mg)*10-3 TRS per Kg of biomass to (30.15±0.31)*10-3 mg TRS per Kg biomass, the most significant factor was the temperature and the least the time. The enzymatic hydrolysis TRS values varied from (77.33±3.82)*10-3 mg TRS per Kg biomass to (99.66±0.62)*10-3 mg TRS per Kg biomass, the most significant factor was the concentration of cellulase and the least the xylanase concentration
Collapse
|
13
|
|
14
|
Vochozka M, Maroušková A, Šuleř P. Economic, Environmental and Moral Acceptance of Renewable Energy: A Case Study-The Agricultural Biogas Plant at Pěčín. SCIENCE AND ENGINEERING ETHICS 2018; 24:299-305. [PMID: 28275935 DOI: 10.1007/s11948-017-9881-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 01/24/2017] [Indexed: 06/06/2023]
Abstract
The production of renewable energy in agricultural biogas plants is being widely criticized because-among other things-most of the feedstock comes from purpose-grown crops like maize. These activities (generously subsidized in the Czech Republic) generate competitive pressure to other crops that are used for feeding or food production, worsening their affordability. Unique pretreatment technology that allows substitution of the purpose-grown crops by farming residues (such as husk or straw) was built 6 years ago on a commercial basis in Pěčín (Czech Republic) under modest funding and without publicity. The design of the concept; financial assessment and moral viewpoint were analyzed based on practical operating data. It showed that the apparatus improves economic, environmental and moral acceptance as well. However, according to the government's view, public funding for this type of processing was shortened, "because waste materials represent a lower cost". The impact of such governance was analyzed as well.
Collapse
Affiliation(s)
- Marek Vochozka
- School of Expertness and Valuation, The Institute of Technology and Businesses in České Budějovice, Okružní 517/10, 370 01, Ceske Budejovice, Czech Republic.
| | - Anna Maroušková
- School of Expertness and Valuation, The Institute of Technology and Businesses in České Budějovice, Okružní 517/10, 370 01, Ceske Budejovice, Czech Republic
| | - Petr Šuleř
- Faculty of Management and Informatics, University of Žilina, Univerzitná 8215/1, 010 26, Zilina, Slovak Republic
| |
Collapse
|
15
|
Lignocellulosic Ethanol Production from the Recovery of Stranded Driftwood Residues. ENERGIES 2016. [DOI: 10.3390/en9080634] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
16
|
Cotana F, Cavalaglio G, Petrozzi A, Coccia V. Lignocellulosic Biomass Feeding in Biogas Pathway: State of the Art and Plant Layouts. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.egypro.2015.12.334] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
17
|
Cotana F, Buratti C, Barbanera M, Lascaro E. Optimization of the steam explosion and enzymatic hydrolysis for sugars production from oak woods. BIORESOURCE TECHNOLOGY 2015; 198:470-7. [PMID: 26421610 DOI: 10.1016/j.biortech.2015.09.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 09/07/2015] [Accepted: 09/08/2015] [Indexed: 05/15/2023]
Abstract
Fermentable sugars production from three kind of steam-exploded oak wood was optimized by Response Surface Methodology (RSM), using the severity factor (R0), the pretreated total solids (TS%) and the enzyme loading (EL%) as variables of a central composite design. A total of 17 experiments for each biomass were carried out. The optimal conditions established with RSM were: severity, 4.46 for holm, 4.03 for turkey oak and 3.92 for downey oak; total solids, 5.4% for holm, 5.0% for turkey oak and 12.7% for downey oak; and enzyme concentration, 9.6% for holm, 15.0% for turkey oak and 15.0% for downey oak. Under these conditions, the model predicted an overall sugar yield of 67.1% for holm, 79.9% for turkey oak and 68.4% for downey oak. The results of the confirmation experiments under optimal conditions agreed well with model predictions. Oak wood species may be a good feedstock for the production of reducing sugars.
Collapse
Affiliation(s)
- F Cotana
- Biomass Research Centre, Department of Engineering, Via G. Duranti 67, 06125 Perugia, Italy
| | - C Buratti
- Biomass Research Centre, Department of Engineering, Via G. Duranti 67, 06125 Perugia, Italy.
| | - M Barbanera
- Biomass Research Centre, Department of Engineering, Via G. Duranti 67, 06125 Perugia, Italy
| | - E Lascaro
- Biomass Research Centre, Department of Engineering, Via G. Duranti 67, 06125 Perugia, Italy
| |
Collapse
|
18
|
Sustainable Ethanol Production from Common Reed (Phragmites australis) through Simultaneuos Saccharification and Fermentation. SUSTAINABILITY 2015. [DOI: 10.3390/su70912149] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
19
|
Hydrogen Production from Water by Photolysis, Sonolysis and Sonophotolysis with Solid Solutions of Rare Earth, Gallium and Indium Oxides as Heterogeneous Catalysts. SUSTAINABILITY 2015. [DOI: 10.3390/su7079310] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
20
|
|
21
|
Cellulose Nanocrystals Obtained from Cynara Cardunculus and Their Application in the Paper Industry. SUSTAINABILITY 2014. [DOI: 10.3390/su6085252] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
22
|
Effect of Double-Step Steam Explosion Pretreatment in Bioethanol Production from Softwood. Appl Biochem Biotechnol 2014; 174:156-67. [DOI: 10.1007/s12010-014-1046-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Accepted: 07/07/2014] [Indexed: 10/25/2022]
|