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Dingcong R, Ahalajal MAN, Mendija LCC, Ruda-Bayor RJG, Maravillas FP, Cavero AI, Cea EJC, Pantaleon KJM, Tejas KJGD, Limbaga EA, Dumancas GG, Malaluan RM, Lubguban AA. Valorization of Agricultural Rice Straw as a Sustainable Feedstock for Rigid Polyurethane/Polyisocyanurate Foam Production. ACS OMEGA 2024; 9:13100-13111. [PMID: 38524426 PMCID: PMC10956088 DOI: 10.1021/acsomega.3c09583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/23/2024] [Accepted: 02/27/2024] [Indexed: 03/26/2024]
Abstract
Agricultural rice straw (RS), often discarded as waste in farmlands, represents a vast and underutilized resource. This study explores the valorization of RS as a potential feedstock for rigid polyurethane/polyisocyanurate foam (RPUF) production. The process begins with the liquefaction of RS to create an RS-based polyol, which is then used in a modified foam formulation to prepare RPUFs. The resulting RPUF samples were comprehensively characterized according to their physical, mechanical, and thermal properties. The results demonstrated that up to 50% by weight of petroleum-based polyol can be substituted with RS-based polyol to produce a highly functional RPUF. The obtained foams exhibited a notably low apparent density of 18-24 kg/m3, exceptional thermal conductivity ranging from 0.031-0.041 W/m-K, and a high compressive strength exceeding 250 kPa. This study underlines the potential of the undervalued agricultural RS as a green alternative to petroleum-based feedstocks to produce a high-value RPUF. Additionally, the findings contribute to the sustainable utilization of abundant agricultural waste while offering an eco-friendly option for various applications, including construction materials and insulation.
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Affiliation(s)
- Roger
G. Dingcong
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Mary Ann N. Ahalajal
- Department
of Civil Engineering and Technology, Mindanao
State University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Leanne Christie C. Mendija
- Department
of Materials Resources Engineering and Technology, Mindanao State University− Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Rosal Jane G. Ruda-Bayor
- Department
of Materials Resources Engineering and Technology, Mindanao State University− Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Felrose P. Maravillas
- Department
of Civil Engineering and Technology, Mindanao
State University − Iligan Institute of Technology, Iligan City 9200, Philippines
- College
of Engineering, Capitol University, Cagayan de Oro City 9000, Philippines
| | - Applegen I. Cavero
- Department
of Civil Engineering and Technology, Mindanao
State University − Iligan Institute of Technology, Iligan City 9200, Philippines
- AC
Joyo Design and Technical Services, Davao City 8000, Philippines
| | - Evalyn Joy C. Cea
- Department
of Civil Engineering and Technology, Mindanao
State University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Kaye Junelle M. Pantaleon
- Department
of Materials Resources Engineering and Technology, Mindanao State University− Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Kassandra Jayza Gift D. Tejas
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Edison A. Limbaga
- Department
of Materials Resources Engineering and Technology, Mindanao State University− Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Gerard G. Dumancas
- Department
of Chemistry, The University of Scranton, Scranton, Pennsylvania 18510, United States
| | - Roberto M. Malaluan
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
- Department
of Chemical Engineering and Technology, Mindanao State University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Arnold A. Lubguban
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
- Department
of Chemical Engineering and Technology, Mindanao State University − Iligan Institute of Technology, Iligan City 9200, Philippines
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2
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Teshima M, Sutiono S, Döring M, Beer B, Boden M, Schenk G, Sieber V. Development of a Highly Selective NAD + -Dependent Glyceraldehyde Dehydrogenase and its Application in Minimal Cell-Free Enzyme Cascades. CHEMSUSCHEM 2024; 17:e202301132. [PMID: 37872118 DOI: 10.1002/cssc.202301132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/18/2023] [Accepted: 10/23/2023] [Indexed: 10/25/2023]
Abstract
Anthropogenic climate change has been caused by over-exploitation of fossil fuels and CO2 emissions. To counteract this, the chemical industry has shifted its focus to sustainable chemical production and the valorization of renewable resources. However, the biggest challenges in biomanufacturing are technical efficiency and profitability. In our minimal cell-free enzyme cascade generating pyruvate as the central intermediate, the NAD+ -dependent, selective oxidation of D-glyceraldehyde was identified as a key reaction step to improve the overall cascade flux. Successive genome mining identified one candidate enzyme with 24-fold enhanced activity and another whose stability is unaffected in 10 % (v/v) ethanol, the final product of our model cascade. Semi-rational engineering improved the substrate selectivity of the enzyme up to 21-fold, thus minimizing side reactions in the one-pot enzyme cascade. The final biotransformation of D-glucose showed a continuous linear production of ethanol (via pyruvate) to a final titer of 4.9 % (v/v) with a molar product yield of 98.7 %. Due to the central role of pyruvate in diverse biotransformations, the optimized production module has great potential for broad biomanufacturing applications.
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Affiliation(s)
- Mariko Teshima
- Chair of Chemistry of Biogenic Resources, Technical University of Munich, Campus Straubing for Biotechnology and Sustainability, Schulgasse 16, 94315, Straubing, Germany
| | - Samuel Sutiono
- Chair of Chemistry of Biogenic Resources, Technical University of Munich, Campus Straubing for Biotechnology and Sustainability, Schulgasse 16, 94315, Straubing, Germany
- Current address: CarboCode Germany GmbH, Byk-Gulden-Straße 2, 78467, Constance, Germany
| | - Manuel Döring
- Chair of Chemistry of Biogenic Resources, Technical University of Munich, Campus Straubing for Biotechnology and Sustainability, Schulgasse 16, 94315, Straubing, Germany
| | - Barbara Beer
- Chair of Chemistry of Biogenic Resources, Technical University of Munich, Campus Straubing for Biotechnology and Sustainability, Schulgasse 16, 94315, Straubing, Germany
- Current address: CASCAT GmbH, Europaring 4, 94315, Straubing, Germany
| | - Mikael Boden
- School of Chemistry and Molecular Biosciences, The University of Queensland, 68 Cooper Rd, St. Lucia, 4072, Brisbane, Australia
| | - Gerhard Schenk
- School of Chemistry and Molecular Biosciences, The University of Queensland, 68 Cooper Rd, St. Lucia, 4072, Brisbane, Australia
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Corner of College and Cooper Rds, St. Lucia, 4072, Brisbane, Australia
- Sustainable Minerals Institute, The University of Queensland, Corner of College and Staff House Rds, St. Lucia, 4072, Brisbane, Australia
| | - Volker Sieber
- Chair of Chemistry of Biogenic Resources, Technical University of Munich, Campus Straubing for Biotechnology and Sustainability, Schulgasse 16, 94315, Straubing, Germany
- School of Chemistry and Molecular Biosciences, The University of Queensland, 68 Cooper Rd, St. Lucia, 4072, Brisbane, Australia
- SynBioFoundry@TUM, Technical University of Munich, Schulgasse 22, 94315, Straubing, Germany
- Catalytic Research Center, Technical University of Munich, Ernst-Otto-Fischer Straße 1, 85748, Garching, Germany
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Saxena A, Hussain A, Parveen F, Ashfaque M. Current status of metabolic engineering of microorganisms for bioethanol production by effective utilization of pentose sugars of lignocellulosic biomass. Microbiol Res 2023; 276:127478. [PMID: 37625339 DOI: 10.1016/j.micres.2023.127478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 08/01/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023]
Abstract
Lignocellulosic biomass, consisting of homo- and heteropolymeric sugars, acts as a substrate for the generation of valuable biochemicals and biomaterials. The readily available hexoses are easily utilized by microbes due to the presence of transporters and native metabolic pathways. But, utilization of pentose sugar viz., xylose and arabinose are still challenging due to several reasons including (i) the absence of the particular native pathways and transporters, (ii) the presence of inhibitors, and (iii) lower uptake of pentose sugars. These challenges can be overcome by manipulating metabolic pathways/glycosidic enzymes cascade by using genetic engineering tools involving inverse-metabolic engineering, ex-vivo isomerization, Adaptive Laboratory Evolution, Directed Metabolic Engineering, etc. Metabolic engineering of bacteria and fungi for the utilization of pentose sugars for bioethanol production is the focus area of research in the current decade. This review outlines current approaches to biofuel development and strategies involved in the metabolic engineering of different microbes that can uptake pentose for bioethanol production.
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Affiliation(s)
- Ayush Saxena
- Lignocellulose & Biofuel Laboratory, Department of Biosciences, Integral University, Lucknow 226026, Uttar Pradesh, India.
| | - Akhtar Hussain
- Lignocellulose & Biofuel Laboratory, Department of Biosciences, Integral University, Lucknow 226026, Uttar Pradesh, India.
| | - Fouziya Parveen
- Lignocellulose & Biofuel Laboratory, Department of Biosciences, Integral University, Lucknow 226026, Uttar Pradesh, India.
| | - Mohammad Ashfaque
- Lignocellulose & Biofuel Laboratory, Department of Biosciences, Integral University, Lucknow 226026, Uttar Pradesh, India.
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Abdeldayem OM, Al Noman MA, Dupont C, Ferras D, Grand Ndiaye L, Kennedy M. Hydrothermal carbonization of Typha australis: Influence of stirring rate. ENVIRONMENTAL RESEARCH 2023; 236:116777. [PMID: 37517487 DOI: 10.1016/j.envres.2023.116777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/25/2023] [Accepted: 07/27/2023] [Indexed: 08/01/2023]
Abstract
According to existing literature, there are no conclusive results on the impact of stirring on hydrothermal carbonization (HTC); some studies report a significant impact on the product's properties, while others indicate no influence. This study investigates the influence of stirring rate on several responses and properties of HTC products, including solid mass yield, solid carbon fraction, surface area, surface functional groups, morphology, and the fate of inorganic elements during HTC. Waste biomass was introduced as a feedstock to a 2 L HTC reactor, where the effects of temperature (180-250 °C), residence time (4-12 h), biomass to water (B/W) ratio (1-10%), and stirring rate (0-130 rpm) were investigated. The findings of this study conclusively indicated that the stirring rate does not influence any of the studied responses or properties of hydrochar under the selected experimental conditions used in this study. Nevertheless, the results indicated that a low-stirring rate (5 RPM) is enough to slightly enhanced the heating-up phase of the HTC reactor. For future research, it is recommended to examine the impact of stirring rate on the HTC of other types of biomass using the methodology developed in this study.
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Affiliation(s)
- Omar M Abdeldayem
- Department of Water Supply, Sanitation, and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2611AX, Delft, the Netherlands; Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN, Delft, the Netherlands.
| | - Md Abdullah Al Noman
- Department of Water Supply, Sanitation, and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2611AX, Delft, the Netherlands
| | - Capucine Dupont
- Department of Water Supply, Sanitation, and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2611AX, Delft, the Netherlands
| | - David Ferras
- Department of Water Supply, Sanitation, and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2611AX, Delft, the Netherlands
| | - Lat Grand Ndiaye
- Department of Physics, University Assane Seck of Ziguinchor, BP.523, Ziguinchor, Senegal
| | - Maria Kennedy
- Department of Water Supply, Sanitation, and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2611AX, Delft, the Netherlands; Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN, Delft, the Netherlands
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de Cássia Spacki K, Novi DMP, de Oliveira-Junior VA, Durigon DC, Fraga FC, dos Santos LFO, Helm CV, de Lima EA, Peralta RA, de Fátima Peralta Muniz Moreira R, Corrêa RCG, Bracht A, Peralta RM. Improving Enzymatic Saccharification of Peach Palm ( Bactris gasipaes) Wastes via Biological Pretreatment with Pleurotus ostreatus. PLANTS (BASEL, SWITZERLAND) 2023; 12:2824. [PMID: 37570978 PMCID: PMC10420912 DOI: 10.3390/plants12152824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/26/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023]
Abstract
The white-rot fungus Pleurotus ostreatus was used for biological pretreatment of peach palm (Bactris gasipaes) lignocellulosic wastes. Non-treated and treated B. gasipaes inner sheaths and peel were submitted to hydrolysis using a commercial cellulase preparation from T. reesei. The amounts of total reducing sugars and glucose obtained from the 30 d-pretreated inner sheaths were seven and five times higher, respectively, than those obtained from the inner sheaths without pretreatment. No such improvement was found, however, in the pretreated B. gasipaes peels. Scanning electronic microscopy of the lignocellulosic fibers was performed to verify the structural changes caused by the biological pretreatments. Upon the biological pretreatment, the lignocellulosic structures of the inner sheaths were substantially modified, making them less ordered. The main features of the modifications were the detachment of the fibers, cell wall collapse and, in several cases, the formation of pores in the cell wall surfaces. The peel lignocellulosic fibers showed more ordered fibrils and no modification was observed after pre-treatment. In conclusion, a seven-fold increase in the enzymatic saccharification of the Bactris gasipaes inner sheath was observed after pre-treatment, while no improvement in enzymatic saccharification was observed in the B. gasipaes peel.
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Affiliation(s)
- Kamila de Cássia Spacki
- Departamento de Bioquímica, Universidade Estadual de Maringá, Maringá 87020-900, Brazil; (K.d.C.S.); (D.M.P.N.); (V.A.d.O.-J.); (L.F.O.d.S.); (A.B.)
| | - Danielly Maria Paixão Novi
- Departamento de Bioquímica, Universidade Estadual de Maringá, Maringá 87020-900, Brazil; (K.d.C.S.); (D.M.P.N.); (V.A.d.O.-J.); (L.F.O.d.S.); (A.B.)
| | - Verci Alves de Oliveira-Junior
- Departamento de Bioquímica, Universidade Estadual de Maringá, Maringá 87020-900, Brazil; (K.d.C.S.); (D.M.P.N.); (V.A.d.O.-J.); (L.F.O.d.S.); (A.B.)
| | - Daniele Cocco Durigon
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis 88040-900, Brazil; (D.C.D.); (R.A.P.)
| | - Fernanda Cristina Fraga
- Departamento de Engenharia Química, Universidade Federal de Santa Catarina, Florianópolis 88040-900, Brazil; (F.C.F.); (R.d.F.P.M.M.)
| | - Luís Felipe Oliva dos Santos
- Departamento de Bioquímica, Universidade Estadual de Maringá, Maringá 87020-900, Brazil; (K.d.C.S.); (D.M.P.N.); (V.A.d.O.-J.); (L.F.O.d.S.); (A.B.)
| | | | | | - Rosely Aparecida Peralta
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis 88040-900, Brazil; (D.C.D.); (R.A.P.)
| | | | - Rúbia Carvalho Gomes Corrêa
- Programa de Pós-Graduação em Tecnologias Limpas, Instituto Cesumar de Ciência, Tecnologia e Inovação—ICETI, Universidade Cesumar—UNICESUMAR, Maringá 87050-900, Brazil;
| | - Adelar Bracht
- Departamento de Bioquímica, Universidade Estadual de Maringá, Maringá 87020-900, Brazil; (K.d.C.S.); (D.M.P.N.); (V.A.d.O.-J.); (L.F.O.d.S.); (A.B.)
| | - Rosane Marina Peralta
- Departamento de Bioquímica, Universidade Estadual de Maringá, Maringá 87020-900, Brazil; (K.d.C.S.); (D.M.P.N.); (V.A.d.O.-J.); (L.F.O.d.S.); (A.B.)
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Shalygin MG, Kozlova AA, Heider J, Sapegin DA, Netrusov AA, Teplyakov VV. Polymeric Membranes for Vapor-Phase Concentrating Volatile Organic Products from Biomass Processing. MEMBRANES AND MEMBRANE TECHNOLOGIES 2023. [DOI: 10.1134/s2517751623010055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
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Substrate concentration: A more serious consideration than the amount of 5-hydroxymethylfurfural in acid-catalyzed hydrolysis during bioethanol production from starch biomass. Heliyon 2022; 8:e12047. [PMID: 36561686 PMCID: PMC9763765 DOI: 10.1016/j.heliyon.2022.e12047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 08/16/2022] [Accepted: 11/24/2022] [Indexed: 12/12/2022] Open
Abstract
5-hydroxymethylfurfural (5-HMF) yield during bioethanol production from starch was determined using spectrophotometry and chromatography. Increasing acid concentration and time favored 5-HMF production with HCl while yield decreased after 45-minute hydrolysis time for HNO3 and H2SO4 hydrolyzed samples. Impacts of glucose (substrate) concentration and produced 5-HMF on bioethanol yield were studied with different sulphuric acid concentrations and different α-amylase and amyloglucosidase activities. A central composite rotational design was utilized to determine the conditions of hydrolysis for optimum glucose production. The results showed that maximum glucose yield occurred at 0.5 M acid concentration and 45-minute hydrolysis time, while maximum yield was achieved at 120 and 280 units of α-amylase and amyloglucosidase activities respectively. It was shown that 5-HMF did not exhibit much inhibition on ethanol yield at low acid concentrations but became pronounced at higher acid concentrations, while high glucose concentrations had a pronounced negative effect on ethanol yield and fermentation efficiency.
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Syazwani Athirah Sazuan N, Irwan Zubairi S, Hanisah Mohd N, Daik R. Synthesising Injectable Molecular Self-Curing Polymer from Monomer Derived from Lignocellulosic Oil Palm Empty Fruit Bunch Biomass: A Review on Treating Osteoarthritis. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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de Cássia Spacki K, Corrêa RCG, Uber TM, Barros L, Ferreira ICFR, Peralta RA, de Fátima Peralta Muniz Moreira R, Helm CV, de Lima EA, Bracht A, Peralta RM. Full Exploitation of Peach Palm ( Bactris gasipaes Kunth): State of the Art and Perspectives. PLANTS (BASEL, SWITZERLAND) 2022; 11:3175. [PMID: 36432904 PMCID: PMC9696370 DOI: 10.3390/plants11223175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/14/2022] [Accepted: 11/16/2022] [Indexed: 06/16/2023]
Abstract
The peach palm (Bactris gasipaes Kunth) is a palm tree native to the Amazon region, with plantations expanding to the Brazilian Southwest and South regions. This work is a critical review of historical, botanical, social, environmental, and nutritional aspects of edible and nonedible parts of the plant. In Brazil, the importance of the cultivation of B. gasipaes to produce palm heart has grown considerably, due to its advantages in relation to other palm species, such as precocity, rusticity and tillering. The last one is especially important, as it makes the exploitation of peach palm hearts, contrary to what happens with other palm tree species, a non-predatory practice. Of special interest are the recent efforts aiming at the valorization of the fruit as a source of carotenoids and starch. Further developments indicate that the B. gasipaes lignocellulosic wastes hold great potential for being upcycled into valuable biotechnological products such as prebiotics, enzymes, cellulose nanofibrils and high fiber flours. Clean technologies are protagonists of the recovery processes, ensuring the closure of the product's life cycle in a "green" way. Future research should focus on expanding and making the recovery processes economically viable, which would be of great importance for stimulating the peach palm production chain.
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Affiliation(s)
| | - Rúbia Carvalho Gomes Corrêa
- Programa de Pós-Graduação em Tecnologias Limpas, Instituto Cesumar de Ciência, Tecnologia e Inovação—ICETI, Universidade Cesumar—UNICESUMAR, Maringá 87050-900, Brazil
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Thaís Marques Uber
- Departamento de Bioquímica, Universidade Estadual de Maringá, Maringá 87020-900, Brazil
| | - Lillian Barros
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Isabel C. F. R. Ferreira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Rosely Aparecida Peralta
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis 88040-900, Brazil
| | | | | | | | - Adelar Bracht
- Departamento de Bioquímica, Universidade Estadual de Maringá, Maringá 87020-900, Brazil
| | - Rosane Marina Peralta
- Departamento de Bioquímica, Universidade Estadual de Maringá, Maringá 87020-900, Brazil
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Althuri A, Venkata Mohan S. Emerging innovations for sustainable production of bioethanol and other mercantile products from circular economy perspective. BIORESOURCE TECHNOLOGY 2022; 363:128013. [PMID: 36155807 DOI: 10.1016/j.biortech.2022.128013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/16/2022] [Accepted: 09/17/2022] [Indexed: 06/16/2023]
Abstract
Biogenic municipal solid waste (BMSW) and food waste (FW) with high energy density are ready to tap renewable resources for industrial scale ethanol refinery foreseen for establishing bio-based society. Circular economy has occupied limelight in the domain of renewable energy and sustainable chemicals production. The present review highlights the importance of BMSW/FW as newer feed reserves that can cater as parent molecules for an array of high-visibility industrial products along with bioethanol upon implementing a judicious closed-cascade mass-flow mechanism enabling ultimate feed and waste stream valorisation. Though these organics are attractive resources their true potential for energy production has not been quantified yet owing to their heterogeneous composition and associated technical challenges thus pushing waste refinery and industrial symbiosis concepts to backseat. To accelerate this industrial vision, the novel bioprocessing strategies for enhanced and low-cost production of bioethanol from BMSW/FW along with other commercially imperative product portfolio have been discussed.
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Affiliation(s)
- Avanthi Althuri
- Bioengineering and Environmental Sciences Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, Telangana, India; Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy-502284, Telangana, India
| | - S Venkata Mohan
- Bioengineering and Environmental Sciences Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, Telangana, India.
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Benti NE, Gurmesa GS, Argaw T, Aneseyee AB, Gunta S, Kassahun GB, Aga GS, Asfaw AA. The current status, challenges and prospects of using biomass energy in Ethiopia. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:209. [PMID: 34702314 PMCID: PMC8549167 DOI: 10.1186/s13068-021-02060-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/18/2021] [Indexed: 05/30/2023]
Abstract
Despite enormous challenges in accessing sustainable energy supplies and advanced energy technologies, Ethiopia has one of the world's fastest growing economies. The development of renewable energy technology and the building of a green legacy in the country are being prioritized. The total installed capacity for electricity generation in Ethiopia is 4324.3 MW as on October, 2018. Renewable energy accounts for 96.5% of total generation; however, despite the county's enormous biomass energy potential, only 0.58% of power is generated using biomass. Ethiopia has surplus woody biomass, crop residue and animal dung resources which comprise about 141.8 million metric tons of biomass availability per year. At present the exploited potential is about 71.9 million metric tons per year. This review paper provides an in-depth assessment of Ethiopia's biomass energy availability, potential, challenges, and prospects. The findings show that, despite Ethiopia's vast biomass resource potential, the current use of modern energy from biomass is still limited. As a result, this study supports the use of biomass-based alternative energy sources without having a negative impact on the socioeconomic system or jeopardizing food security or the environment. This finding also shows the challenges, opportunities and possible solutions to tackle the problem to expand alternative energy sources. The most effective techniques for producing and utilizing alternate energy sources were also explored. Moreover, some perspectives are given based on the challenges of using efficient energy production and sustainable uses of biomass energy in Ethiopia as it could be also implemented in other developing countries. We believe that the information in this review will shed light on the current and future prospects of biomass energy deployment in Ethiopia.
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Affiliation(s)
- Natei Ermias Benti
- Department of Physics, College of Natural and Computational Sciences, Wolaita Sodo University, P.O. Box 138, Wolaita Sodo, Ethiopia.
- Center for Environmental Science, College of Natural and Computational Sciences, Addis Ababa University, P. O. Box 1176, Addis Ababa, Ethiopia.
| | - Gamachis Sakata Gurmesa
- Department of Physics, College of Natural and Computational Sciences, Addis Ababa University, P. O. Box 1176, Addis Ababa, Ethiopia
- Department of Physics, College of Natural and Computational Sciences, Mettu University, P. O. Box 382, Mettu, Ethiopia
| | - Tegenu Argaw
- Department of Physics, Collage of Natural and Computational Sciences, Wollo University, Dessie, Ethiopia
| | - Abreham Berta Aneseyee
- Department of Natural Resource Management, College of Agriculture and Natural Resource Management, Wolkite University, P. O. Box 07, Wolkite, Ethiopia
| | - Solomon Gunta
- Department of Physics, College of Natural and Computational Sciences, Wolaita Sodo University, P.O. Box 138, Wolaita Sodo, Ethiopia
| | - Gashaw Beyene Kassahun
- Department of Physics, College of Natural and Computational Sciences, Addis Ababa University, P. O. Box 1176, Addis Ababa, Ethiopia
- Applied Physics Program, Adama Science and Technology University, P. O. Box 188, Adama, Ethiopia
| | - Genene Shiferaw Aga
- Department of Physics, College of Natural and Computational Sciences, Addis Ababa University, P. O. Box 1176, Addis Ababa, Ethiopia
- Department of Physics, College of Natural and Computational Sciences, Debre Birhan University, P. O. Box 445, Debre Birhan, Ethiopia
| | - Ashenafi Abebe Asfaw
- Department of Physics, College of Natural and Computational Sciences, Wolaita Sodo University, P.O. Box 138, Wolaita Sodo, Ethiopia.
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Abstract
Anaerobic digestion is an efficient technology for a sustainable conversion of various organic wastes such as animal manure, municipal solid waste, agricultural residues and industrial waste into biogas. This technology offers a unique set of benefits, some of which include a good waste management technique, enhancement in the ecology of rural areas, improvement in health through a decrease of pathogens and optimization of the energy consumption of communities. The biogas produced through anaerobic digestion varies in composition, but it consists mainly of carbon dioxide methane together with a low quantity of trace gases. The variation in biogas composition are dependent on some factors namely the substrate type being digested, pH, operating temperature, organic loading rate, hydraulic retention time and digester design. However, the type of substrate used is of greater interest due to the direct dependency of microorganism activities on the nutritional composition of the substrate. Therefore, the aim of this review study is to provide a detailed analysis of the various types of organic wastes that have been used as a substrate for the sustainable production of biogas. Biogas formation from various substrates reported in the literature were investigated, an analysis and characterization of these substrates provided the pro and cons associated with each substrate. The findings obtained showed that the methane yield for all animal manure varied from 157 to 500 mL/gVS with goat and pig manure superseding the other animal manure whereas lignocellulose biomass varied from 160 to 212 mL/gVS. In addition, organic municipal solid waste and industrial waste showed methane yield in the ranges of 143–516 mL/gVS and 25–429 mL/gVS respectively. These variations in methane yield are primarily attributed to the nutritional composition of the various substrates.
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Abstract
The development of biorefinery processes to platform chemicals for most lignocellulosic substrates, results in side processes to intermediates such as oligosaccharides. Agrofood wastes are most amenable to produce such intermediates, in particular, cellooligo-saccharides (COS), pectooligosaccharides (POS), xylooligosaccharides (XOS) and other less abundant oligomers containing mannose, arabinose, galactose and several sugar acids. These compounds show a remarkable bioactivity as prebiotics, elicitors in plants, food complements, healthy coadyuvants in certain therapies and more. They are medium to high added-value compounds with an increasing impact in the pharmaceutical, nutraceutical, cosmetic and food industries. This review is focused on the main production processes: autohydrolysis, acid and basic catalysis and enzymatic saccharification. Autohydrolysis of food residues at 160–190 °C leads to oligomer yields in the 0.06–0.3 g/g dry solid range, while acid hydrolysis of pectin (80–120 °C) or cellulose (45–180 °C) yields up to 0.7 g/g dry polymer. Enzymatic hydrolysis at 40–50 °C of pure polysaccharides results in 0.06–0.35 g/g dry solid (DS), with values in the range 0.08–0.2 g/g DS for original food residues.
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Technoeconomic and life-cycle analysis of single-step catalytic conversion of wet ethanol into fungible fuel blendstocks. Proc Natl Acad Sci U S A 2019; 117:12576-12583. [PMID: 31767762 DOI: 10.1073/pnas.1821684116] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Technoeconomic and life-cycle analyses are presented for catalytic conversion of ethanol to fungible hydrocarbon fuel blendstocks, informed by advances in catalyst and process development. Whereas prior work toward this end focused on 3-step processes featuring dehydration, oligomerization, and hydrogenation, the consolidated alcohol dehydration and oligomerization (CADO) approach described here results in 1-step conversion of wet ethanol vapor (40 wt% in water) to hydrocarbons and water over a metal-modified zeolite catalyst. A development project increased liquid hydrocarbon yields from 36% of theoretical to >80%, reduced catalyst cost by an order of magnitude, scaled up the process by 300-fold, and reduced projected costs of ethanol conversion 12-fold. Current CADO products conform most closely to gasoline blendstocks, but can be blended with jet fuel at low levels today, and could potentially be blended at higher levels in the future. Operating plus annualized capital costs for conversion of wet ethanol to fungible blendstocks are estimated at $2.00/GJ for CADO today and $1.44/GJ in the future, similar to the unit energy cost of producing anhydrous ethanol from wet ethanol ($1.46/GJ). Including the cost of ethanol from either corn or future cellulosic biomass but not production incentives, projected minimum selling prices for fungible blendstocks produced via CADO are competitive with conventional jet fuel when oil is $100 per barrel but not at $60 per barrel. However, with existing production incentives, the projected minimum blendstock selling price is competitive with oil at $60 per barrel. Life-cycle greenhouse gas emission reductions for CADO-derived hydrocarbon blendstocks closely follow those for the ethanol feedstock.
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15
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Ag- and Cu-Promoted Mesoporous Ta-SiO2 Catalysts Prepared by Non-Hydrolytic Sol-Gel for the Conversion of Ethanol to Butadiene. Catalysts 2019. [DOI: 10.3390/catal9110920] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The direct catalytic conversion of bioethanol to butadiene, also known as the Lebedev process, is one of the most promising solution to replace the petro-based production of this important bulk chemical. Considering the intricate reaction mechanism—where a combination of acid-catalyzed dehydration reactions and metal-catalyzed dehydrogenation have to take place simultaneously—tailor-made bifunctional catalysts are required. We propose to use non-hydrolytic sol-gel (NHSG) chemistry to prepare mesoporous Ta-SiO2 materials which are further promoted by Ag via impregnation. An acetamide elimination route is presented, starting from silicon tetraacetate and pentakis(dimethylamido)tantalum(V), in the presence of a Pluronic surfactant. The catalysts display advantageous texture, with specific surface area in the 600–1000 m² g−1 range, large pore volume (0.6–1.0 mL g−1), an average pore diameter of 4 nm and only a small contribution from micropores. Using an array of characterization techniques, we show that NHSG allows achieving a high degree of dispersion of tantalum, mainly incorporated as single sites in the silica matrix. The presence of these monomeric TaOx active sites is responsible for the much higher dehydration ability, as compared to the corresponding catalyst prepared by impregnation of Ta onto a pristine silica support. We attempt to optimize the butadiene yield by changing the relative proportion of Ta and Ag and by tuning the space velocity. We also demonstrate that Ag or Cu can be introduced directly in one step, during the NHSG process. Copper doping is shown to be much more efficient than silver doping to guide the reaction towards the production of butadiene.
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Mousavi Ahranjani P, Ghaderi SF, Azadeh A, Babazadeh R. Hybrid Multiobjective Robust Possibilistic Programming Approach to a Sustainable Bioethanol Supply Chain Network Design. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02869] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
| | - Seyed Farid Ghaderi
- School of Industrial Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Ali Azadeh
- School of Industrial Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Reza Babazadeh
- Faculty of Engineering, Urmia University, Urmia, West Azerbaijan Province, Iran
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17
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Aftab MN, Zafar A, Iqbal I, Kaleem A, Zia KM, Awan AR. Optimization of saccharification potential of recombinant xylanase from Bacillus licheniformis. Bioengineered 2018; 9:159-165. [PMID: 28886289 PMCID: PMC5972937 DOI: 10.1080/21655979.2017.1373918] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Saccharification potential of xylanase enzyme cloned from Bacillus licheniformis into E. coli BL21 (DE3) was evaluated against plant biomass for the production of bioethanol. The expression of cloned gene was studied and conditions were optimized for its large scale production. The parameters effecting enzyme production were examined in a fermenter. Recombinant xylanase has the ability to breakdown birchwood xylan to release xylose as well as the potential to treat plant biomass, such as wheat straw, rice straw, and sugarcane bagass. The saccharification ability of this enzyme was optimized by studying various parameters. The maximum saccharification percentage (84%) was achieved when 20 units of recombinant xylanase were used with 8% sugarcane bagass at 50°C and 120 rpm after 6 hours of incubation. The results indicated that the bioconversion of natural biomass by recombinant xylanase into simple sugars can be used for biofuel (bioethanol) production. This process can replace the use of fossil fuels, and the use of bioethanol can significantly reduce the emission of toxic gases. Future directions regarding pre-treatment of cellulosic and hemicellulosic biomass and other processes that can reduce the cost and enhance the yield of biofuels are briefly discussed.
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Affiliation(s)
- Muhammad N Aftab
- a Institute of Industrial Biotechnology , Government College University , Katchery Road, Lahore , Pakistan
| | - Asma Zafar
- a Institute of Industrial Biotechnology , Government College University , Katchery Road, Lahore , Pakistan
| | - Irfana Iqbal
- b Department of Zoology , Lahore College for Women University , Lahore , Pakistan
| | - Afshan Kaleem
- c Department of Biotechnology , Lahore College for Women University , Lahore , Pakistan
| | - Khalid M Zia
- d Institute of Chemistry , Government College University , Faisalabad , Pakistan
| | - Ali R Awan
- e Institute of Biochemistry & Biotechnology , University of Veterinary and Animal Sciences , Lahore , Pakistan
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