1
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Khan RJ, Guan J, Lau CY, Zhuang H, Rehman S, Leu SY. Monolignol Potential and Insights into Direct Depolymerization of Fruit and Nutshell Remains for High Value Sustainable Aromatics. CHEMSUSCHEM 2024; 17:e202301306. [PMID: 38078500 DOI: 10.1002/cssc.202301306] [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: 09/05/2023] [Revised: 11/16/2023] [Accepted: 12/08/2023] [Indexed: 01/19/2024]
Abstract
The inedible parts of nuts and stone fruits are low-cost and lignin-rich feedstock for more sustainable production of aromatic chemicals in comparison with the agricultural and forestry residues. However, the depolymerization performances on food-related biomass remains unclear, owing to the broad physicochemical variations from the edible parts of the fruits and plant species. In this study, the monomer production potentials of ten major fruit and nutshell biomass were investigated with comprehensive numerical information derived from instrumental analysis, such as plant cell wall chemical compositions, syringyl/guaiacyl (S/G ratios, and contents of lignin substructure linkages (β-O-4, β-β, β-5). A standardized one-pot reductive catalytic fractionation (RCF) process was applied to benchmark the monomer yields, and the results were statistically analyzed. Among all the tested biomass, mango endocarp provided the highest monolignol yields of 37.1 % per dry substrates. Positive S-lignin (70-84 %) resulted in higher monomer yield mainly due to more cleavable β-O-4 linkages and less condensed C-C linkages. Strong positive relationships were identified between β-O-4 and S-lignin and between β-5 and G-lignin. The analytical, numerical, and experimental results of this study shed lights to process design of lignin-first biorefinery in food-processing industries and waste management works.
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Affiliation(s)
- Rabia J Khan
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Jianyu Guan
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Chun Y Lau
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Huichuan Zhuang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Shazia Rehman
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Shao-Yuan Leu
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
- Research Centre for Resources Engineering towards Carbon Neutrality (RCRE), The Hong Kong Polytechnic University, Hong Kong
- Research Institute for Future Food (RiFood), The Hong Kong Polytechnic University, Hong Kong, 3400-8322
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2
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Insights into depolymerization pathways and mechanism of alkali lignin over a Ni1.2–ZrO2/WO3/γ-Al2O3 catalyst. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2021.07.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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3
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Effective pretreatment of lignin-rich coconut wastes using a low-cost ionic liquid. Sci Rep 2022; 12:6108. [PMID: 35414700 PMCID: PMC9005540 DOI: 10.1038/s41598-022-09629-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 03/14/2022] [Indexed: 11/08/2022] Open
Abstract
Coconut husks and shells are underutilised agricultural feedstocks in the bio-based industry. These biomass wastes have a higher lignin content than other woody biomass and have excellent potential as raw materials for the production of lignin-based materials. This work demonstrates the performance of a low-cost protic ionic liquid, N,N,N-dimethylbutylammonium hydrogen sulfate ([DMBA][HSO4]), for ionoSolv pretreatment of coconut husk and shell at 150 °C for 45-90 min and 170 °C for 15-60 min. Optimum pretreatment conditions were observed at 170 °C and 45 min for both feedstocks. At these conditions, [DMBA][HSO4] was able to remove almost 77 wt% of the lignin from the husk; leaving a cellulosic rich pulp behind, which released 82 % of the theoretical maximum glucose after enzymatic saccharification. The pretreated shell, by comparison, achieved 82 wt% lignin removal and 89 % glucose yield and these higher values could be attributed to the highly porous structure of coconut shell cell walls. The cleavage of the β-O-4 aryl ether linkages of lignin followed by extensive C-C condensation in the lignin at longer pretreatment times was shown by HSQC NMR analysis. This extensive condensation was evidenced by molecular weights > 10,000 g/mol exhibited by lignin precipitated after pretreatment at high temperature and long times. The high degree of lignin removal and high glucose release from both feedstocks demonstrate that [DMBA][HSO4] is an excellent ionic liquid for fractionation of very lignin-rich biomass.
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4
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Dev B, Bakshi A, Paramasivan B. Prospects of utilizing seawater as a reaction medium for pretreatment and saccharification of rice straw. CHEMOSPHERE 2022; 293:133528. [PMID: 34995624 DOI: 10.1016/j.chemosphere.2022.133528] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 12/30/2021] [Accepted: 01/02/2022] [Indexed: 06/14/2023]
Abstract
The transition towards a bio-based economy has led to an unprecedented surge in fresh water consumption that renders biofuel a high water footprint product. The depleting fresh water resources have exacerbated the situation which necessitates the exploration of non-potable water for biorefinery purposes. In the current study, seawater is used as a plausible alternative reaction medium for pretreatment and saccharification of rice straw. Response Surface Methodology (RSM) based on Box-Behnken Design (BBD) was employed to model, predict and validate cellulose release and reducing sugar yield from rice straw subjected to microwave-NaOH pretreatment. The optimized pretreatment conditions were determined to be 8.54% substrate loading, 1.94% NaOH and 4.09 min which resulted in the maximum cellulose release of 65.43% and reducing sugar yield of 0.554 g/g. Several physico-chemical studies of the raw and pretreated biomass were carried out using bomb calorimetry, scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, Brunauer-Emmett-Teller (BET) analysis and thermal gravimetric analysis (TGA) to examine the efficacy of pretreatment. Evidences of an apparent delignification was substantiated by the increase in surface area from 7.719 to 44.188 m2 g-1and pore volume from 0.039 to 0.071 mlg-1 which was consistent with the decrease in energy density and distorted surface morphology of the pretreated biomass. Further, the FTIR revealed a reduced peak in the absorption spectral bands at 1636 cm-1 which confirmed the pretreatment mediated degradation of lignin and hemicellulose. This finding provides evidence on the prospects of utilizing abundantly available seawater resource as a reaction medium for sustainable biofuel production.
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Affiliation(s)
- Binita Dev
- Department of Life Science, National Institute of Technology Rourkela, Odisha, 769008, India
| | - Arindam Bakshi
- Department of Food Science and Human Nutrition, Iowa State University, Iowa, 50011, USA
| | - Balasubramanian Paramasivan
- Department of Biotechnology & Medical Engineering, National Institute of Technology Rourkela, 769008, Odisha, India.
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5
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A Review of the Status of Fossil and Renewable Energies in Southeast Asia and Its Implications on the Decarbonization of ASEAN. ENERGIES 2022. [DOI: 10.3390/en15062152] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
The ten nations of Southeast Asia, collectively known as ASEAN, emitted 1.65 Gtpa CO2 in 2020, and are among the most vulnerable nations to climate change, which is partially caused by anthropogenic CO2 emission. This paper analyzes the history of ASEAN energy consumption and CO2 emission from both fossil and renewable energies in the last two decades. The results show that ASEAN’s renewable energies resources range from low to moderate, are unevenly distributed geographically, and contributed to only 20% of total primary energy consumption (TPEC) in 2015. The dominant forms of renewable energies are hydropower, solar photovoltaic, and bioenergy. However, both hydropower and bioenergy have substantial sustainability issues. Fossil energies depend heavily on coal and oil and contribute to 80% of TPEC. More importantly, renewable energies’ contribution to TPEC has been decreasing in the last two decades, despite the increasing installation capacity. This suggests that the current rate of the addition of renewable energy capacity is inadequate to allow ASEAN to reach net-zero by 2050. Therefore, fossil energies will continue to be an important part of ASEAN’s energy mix. More tools, such as carbon capture and storage (CCS) and hydrogen, will be needed for decarbonization. CCS will be needed to decarbonize ASEAN’s fossil power and industrial plants, while blue hydrogen will be needed to decarbonize hard-to-decarbonize industrial plants. Based on recent research into regional CO2 source-sink mapping, this paper proposes six large-scale CCS projects in four countries, which can mitigate up to 300 Mtpa CO2. Furthermore, this paper identifies common pathways for ASEAN decarbonization and their policy implications.
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6
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Modeling the ecosystem service of agricultural residues provision for bioenergy production: A potential application in the Emilia-Romagna region (Italy). Ecol Modell 2021. [DOI: 10.1016/j.ecolmodel.2021.109571] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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7
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Socio-Economic and Environmental Impacts of Biomass Valorisation: A Strategic Drive for Sustainable Bioeconomy. SUSTAINABILITY 2021. [DOI: 10.3390/su13084200] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In the late twentieth century, the only cost-effective opportunity for waste removal cost at least several thousand dollars, but nowadays, a lot of improvement has occurred. The biomass and waste generation problems attracted concerned authorities to identify and provide environmentally friendly sustainable solutions that possess environmental and economic benefits. The present study emphasises the valorisation of biomass and waste produced by domestic and industrial sectors. Therefore, substantial research is ongoing to replace the traditional treatment methods that potentially acquire less detrimental effects. Synthetic biology can be a unique platform that invites all the relevant characters for designing and assembling an efficient program that could be useful to handle the increasing threat for human beings. In the future, these engineered methods will not only revolutionise our lives but practically lead us to get cheaper biofuels, producing bioenergy, pharmaceutics, and various biochemicals. The bioaugmentation approach concomitant with microbial fuel cells (MFC) is an example that is used to produce electricity from municipal waste, which is directly associated with the loading of waste. Beyond the traditional opportunities, herein, we have spotlighted the new advances in pertinent technology closely related to production and reduction approaches. Various integrated modern techniques and aspects related to the industrial sector are also discussed with suitable examples, including green energy and other industrially relevant products. However, many problems persist in present-day technology that requires essential efforts to handle thoroughly because significant valorisation of biomass and waste involves integrated methods for timely detection, classification, and separation. We reviewed and proposed the anticipated dispensation methods to overcome the growing stream of biomass and waste at a distinct and organisational scale.
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8
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Priyadarshini P, Abhilash PC. Circular economy practices within energy and waste management sectors of India: A meta-analysis. BIORESOURCE TECHNOLOGY 2020; 304:123018. [PMID: 32087547 DOI: 10.1016/j.biortech.2020.123018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 02/08/2020] [Accepted: 02/11/2020] [Indexed: 05/28/2023]
Abstract
Adoption of circular practices within environmental management is gaining worldwide recognition owing to rapid resource depletion and detrimental effects of climate change. The present study therefore attempted to ascertain the linkages between circular economy (CE) and sustainable development (SD) by examining the role of renewable energy (RE) and waste management (WM) sectors in CE combined with policy setup and enabling frameworks boosting the influx of circularity principles in the Indian context. Results revealed that research dedicated towards energy recovery from waste in India lacks integration with SD. Findings also revealed that although India is extremely dedicated towards attainment of the SDGs, penetration of CE principles within administration requires considerable efforts especially since WM regulations for municipal, plastic and e-waste lack alignment with CE principles. Integration of WM and RE policies under an umbrella CE policy would provide further impetus to the attainment of circularity and SD within the Indian economy.
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Affiliation(s)
- Priya Priyadarshini
- Institute of Environment & Sustainable Development, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
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9
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Chang F, Jia F, Lv R, Zhen L, Li Y, Wang Y. Changes in structure and function of bacterial and fungal communities in open composting of Chinese herb residues. Can J Microbiol 2019; 66:194-205. [PMID: 31790274 DOI: 10.1139/cjm-2019-0347] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In this study, dynamic changes in bacterial and fungal communities, metabolic characteristics, and trophic modes in Chinese herb residues open composting for 30 days were analyzed by using high-throughput sequencing, PICRUSt, and FUNGuild, respectively. Bacillaceae and Basidiomycota predominated at the early composting stage, while Proteobacteria and Ascomycota became the dominant phyla during the active phase. Aerobic composting had a significant effect on bacterial metabolic characteristics and fungal trophic modes over the composting time. The function of the bacterial communities changed from environmental information processing to metabolism. Fungal communities changed as well, with the pathogenic fungi decreasing and wood saprotrophs increasing. These results indicated that open composting of Chinese herb residues not only influenced microbial community structure but also changed metabolic characteristics and trophic modes, which became the internal dynamics of composting.
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Affiliation(s)
- Fan Chang
- Research Center for Metabolites, Shaanxi Institute of Microbiology, 76 Xiying Road, Xi'an, Shaanxi 710043, P.R. China.,Research Center for Metabolites, Shaanxi Institute of Microbiology, 76 Xiying Road, Xi'an, Shaanxi 710043, P.R. China
| | - Fengan Jia
- Research Center for Metabolites, Shaanxi Institute of Microbiology, 76 Xiying Road, Xi'an, Shaanxi 710043, P.R. China.,Research Center for Metabolites, Shaanxi Institute of Microbiology, 76 Xiying Road, Xi'an, Shaanxi 710043, P.R. China
| | - Rui Lv
- Research Center for Metabolites, Shaanxi Institute of Microbiology, 76 Xiying Road, Xi'an, Shaanxi 710043, P.R. China.,Research Center for Metabolites, Shaanxi Institute of Microbiology, 76 Xiying Road, Xi'an, Shaanxi 710043, P.R. China
| | - Lisha Zhen
- Research Center for Metabolites, Shaanxi Institute of Microbiology, 76 Xiying Road, Xi'an, Shaanxi 710043, P.R. China.,Research Center for Metabolites, Shaanxi Institute of Microbiology, 76 Xiying Road, Xi'an, Shaanxi 710043, P.R. China
| | - Yan Li
- Research Center for Metabolites, Shaanxi Institute of Microbiology, 76 Xiying Road, Xi'an, Shaanxi 710043, P.R. China.,Research Center for Metabolites, Shaanxi Institute of Microbiology, 76 Xiying Road, Xi'an, Shaanxi 710043, P.R. China
| | - Yan Wang
- Research Center for Metabolites, Shaanxi Institute of Microbiology, 76 Xiying Road, Xi'an, Shaanxi 710043, P.R. China.,Research Center for Metabolites, Shaanxi Institute of Microbiology, 76 Xiying Road, Xi'an, Shaanxi 710043, P.R. China
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10
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Lu X, Cao L, Wang H, Peng W, Xing J, Wang S, Cai S, Shen B, Yang Q, Nielsen CP, McElroy MB. Gasification of coal and biomass as a net carbon-negative power source for environment-friendly electricity generation in China. Proc Natl Acad Sci U S A 2019; 116:8206-8213. [PMID: 30962380 PMCID: PMC6486764 DOI: 10.1073/pnas.1812239116] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Realizing the goal of the Paris Agreement to limit global warming to 2 °C by the end of this century will most likely require deployment of carbon-negative technologies. It is particularly important that China, as the world's top carbon emitter, avoids being locked into carbon-intensive, coal-fired power-generation technologies and undertakes a smooth transition from high- to negative-carbon electricity production. We focus here on deploying a combination of coal and biomass energy to produce electricity in China using an integrated gasification cycle system combined with carbon capture and storage (CBECCS). Such a system will also reduce air pollutant emissions, thus contributing to China's near-term goal of improving air quality. We evaluate the bus-bar electricity-generation prices for CBECCS with mixing ratios of crop residues varying from 0 to 100%, as well as associated costs for carbon mitigation and cobenefits for air quality. We find that CBECCS systems employing a crop residue ratio of 35% could produce electricity with net-zero life-cycle emissions of greenhouse gases, with a levelized cost of electricity of no more than 9.2 US cents per kilowatt hour. A carbon price of approximately $52.0 per ton would make CBECCS cost-competitive with pulverized coal power plants. Therefore, our results provide critical insights for designing a CBECCS strategy in China to harness near-term air-quality cobenefits while laying the foundation for achieving negative carbon emissions in the long run.
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Affiliation(s)
- Xi Lu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, 10084 Beijing, People's Republic of China;
- State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Tsinghua University, 10084 Beijing, People's Republic of China
| | - Liang Cao
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, 10084 Beijing, People's Republic of China
- State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Tsinghua University, 10084 Beijing, People's Republic of China
- School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Haikun Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023 Nanjing, People's Republic of China
| | - Wei Peng
- School of International Affairs, Pennsylvania State University, University Park, PA 16802
- Department of Civil and Environmental Engineering, Pennsylvania State University, University Park, PA 16802
| | - Jia Xing
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, 10084 Beijing, People's Republic of China
- State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Tsinghua University, 10084 Beijing, People's Republic of China
| | - Shuxiao Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, 10084 Beijing, People's Republic of China
- State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Tsinghua University, 10084 Beijing, People's Republic of China
| | - Siyi Cai
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, 10084 Beijing, People's Republic of China
- State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Tsinghua University, 10084 Beijing, People's Republic of China
| | - Bo Shen
- Energy Analysis and Environmental Impacts Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
| | - Qing Yang
- Department of New Energy Science and Technology, School of Energy and Power Engineering, Huazhong University of Science and Technology, 430074 Wuhan, People's Republic of China
- China-EU Institute for Clean and Renewable Energy, Huazhong University of Science and Technology, 430074 Wuhan, People's Republic of China
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138
| | - Chris P Nielsen
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138
| | - Michael B McElroy
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138;
- Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138
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11
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Moon S, Lee Y, Choi S, Hong S, Lee S, Park AHA, Park Y. Spectroscopic Investigation of Thermochemical Depolymerization of Lignin Model Compounds in the Presence of Novel Liquidlike Nanoparticle Organic Hybrid Solvents for Efficient Biomass Valorization. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.8b00282] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Seokyoon Moon
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Yunseok Lee
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Soyoung Choi
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Sujin Hong
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Seungin Lee
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Ah-Hyung A. Park
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
- Lenfest Center for Sustainable Energy, Columbia University, New York, New York 10027, United States
| | - Youngjune Park
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
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12
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Xiao X, Chen B, Zhu L, Schnoor JL. Sugar Cane-Converted Graphene-like Material for the Superhigh Adsorption of Organic Pollutants from Water via Coassembly Mechanisms. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:12644-12652. [PMID: 29016116 PMCID: PMC6434681 DOI: 10.1021/acs.est.7b03639] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
A sugar cane-converted graphene-like material (FZS900) was fabricated by carbonization and activation. The material exhibited abundant micropores, water-stable turbostratic single-layer graphene nanosheets, and a high BET-N2 surface area (2280 m2 g-1). The adsorption capacities of FZS900 toward naphthalene, phenanthrene, and 1-naphthol were 615.8, 431.2, and 2040 mg g-1, respectively, which are much higher than those of previously reported materials. The nonpolar aromatic molecules induced the turbostratic graphene nanosheets to agglomerate in an orderly manner, forming 2-11 graphene layer nanoloops, while polar aromatic compounds induced high dispersion or aggregation of the graphene nanosheets. This phase conversion of the nanosized materials after sorption occurred through coassembly of the aromatic molecules and the single-layer graphene nanosheets via large-area π-π interactions. An adsorption-induced partition mechanism was further proposed to explain the nanosize effect and nanoscale sorption sites observed. This study indicates that commonly available biomass can be converted to graphene-like material with superhigh sorption ability in order to remove pollutants from the environment via nanosize effects and a coassembly mechanism.
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Affiliation(s)
- Xin Xiao
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Baoliang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Lizhong Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Jerald L. Schnoor
- Department of Civil and Environmental Engineering, University of Iowa, Iowa City, Iowa 52242, United States
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13
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Chandra Rajak R, Banerjee R. Enzyme mediated biomass pretreatment and hydrolysis: a biotechnological venture towards bioethanol production. RSC Adv 2016. [DOI: 10.1039/c6ra09541k] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Biobased processes are gaining major interest worldwide with considerable efforts now being applied to developing efficient technologies for bioresource utilization.
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Affiliation(s)
- Rajiv Chandra Rajak
- Advanced Technology and Development Centre
- Indian Institute of Technology
- Kharagpur-721302
- India
| | - Rintu Banerjee
- Agricultural & Food Engineering Department
- Indian Institute of Technology
- Kharagpur-721302
- India
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14
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Engineering Plant Biomass Lignin Content and Composition for Biofuels and Bioproducts. ENERGIES 2015. [DOI: 10.3390/en8087654] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Chen M, Zeng G, Lai C, Li J, Xu P, Wu H. Molecular basis of laccase bound to lignin: insight from comparative studies on the interaction of Trametes versicolor laccase with various lignin model compounds. RSC Adv 2015. [DOI: 10.1039/c5ra07916k] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Binding orientation of lignin model compounds in laccase.
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Affiliation(s)
- Ming Chen
- College of Environmental Science and Engineering
- Hunan University
- Changsha 410082
- China
- Key Laboratory of Environmental Biology and Pollution Control
| | - Guangming Zeng
- College of Environmental Science and Engineering
- Hunan University
- Changsha 410082
- China
- Key Laboratory of Environmental Biology and Pollution Control
| | - Cui Lai
- College of Environmental Science and Engineering
- Hunan University
- Changsha 410082
- China
- Key Laboratory of Environmental Biology and Pollution Control
| | - Jian Li
- Department of River
- Yangtze River Scientific Research Institute
- Wuhan 430010
- China
| | - Piao Xu
- College of Environmental Science and Engineering
- Hunan University
- Changsha 410082
- China
- Key Laboratory of Environmental Biology and Pollution Control
| | - Haipeng Wu
- College of Environmental Science and Engineering
- Hunan University
- Changsha 410082
- China
- Key Laboratory of Environmental Biology and Pollution Control
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16
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Predicting the impacts of climate change on the potential distribution of major native non-food bioenergy plants in China. PLoS One 2014; 9:e111587. [PMID: 25365425 PMCID: PMC4218772 DOI: 10.1371/journal.pone.0111587] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 09/26/2014] [Indexed: 11/19/2022] Open
Abstract
Planting non-food bioenergy crops on marginal lands is an alternative bioenergy development solution in China. Native non-food bioenergy plants are also considered to be a wise choice to reduce the threat of invasive plants. In this study, the impacts of climate change (a consensus of IPCC scenarios A2a for 2080) on the potential distribution of nine non-food bioenergy plants native to China (viz., Pistacia chinensis, Cornus wilsoniana, Xanthoceras sorbifolia, Vernicia fordii, Sapium sebiferum, Miscanthus sinensis, M. floridulus, M. sacchariflorus and Arundo donax) were analyzed using a MaxEnt species distribution model. The suitable habitats of the nine non-food plants were distributed in the regions east of the Mongolian Plateau and the Tibetan Plateau, where the arable land is primarily used for food production. Thus, the large-scale cultivation of those plants for energy production will have to rely on the marginal lands. The variables of “precipitation of the warmest quarter” and “annual mean temperature” were the most important bioclimatic variables for most of the nine plants according to the MaxEnt modeling results. Global warming in coming decades may result in a decrease in the extent of suitable habitat in the tropics but will have little effect on the total distribution area of each plant. The results indicated that it will be possible to grow these plants on marginal lands within these areas in the future. This work should be beneficial for the domestication and cultivation of those bioenergy plants and should facilitate land-use planning for bioenergy crops in China.
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Carchesio M, Tatàno F, Lancellotti I, Taurino R, Colombo E, Barbieri L. Comparison of biomethane production and digestate characterization for selected agricultural substrates in Italy. ENVIRONMENTAL TECHNOLOGY 2014; 35:2212-2226. [PMID: 25145174 DOI: 10.1080/09593330.2014.898701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Starting from (but not limited to) their importance in the Italian context, three agricultural substrates, two of fruit origin (grape seeds and plum stones) and one of herbaceous origin (woad), were comparatively tested for both biomethane production and digestate characterization. The anaerobic digestion tests showed that grape seeds had the highest net methane production of 253.0 NmL g volatile solids (VS)(-1), followed by plum stones, whose best resulting net methane production was 174.7 NmL gVS(-1), and finally by woad with a net methane production of 153.1 NmL gVS(-1). Interestingly, the best methane productions of the fruit substrates were obtained with different substrate to inoculum ratios (on a VS basis), 1:1 for grape seeds but 2:1 for plum stones. On the other hand, a three-month ageing of woad caused a limited reduction of methane production. The estimation of obtained degrees of conversion, carried out on a chemical oxygen demand (COD) basis for the specific tests achieving the respective best methane productions, gave values of 48%, 31%, and 33% for grape seeds, plum stones, and woad, respectively. The estimated degrees of conversion were evaluated along with the respective methane productions and substrate COD/VS ratios. The comparison of Fourier transform infrared (FT-IR) spectra and differential thermal analysis (DTA) profiles, carried out for selected digestates in pairs, revealed some distinctive differences in the relative intensities or presence and absence of particular peaks in the FT-IR spectra and in the relative intensities of the exothermic peaks or horizontal curve shifting of the DTA profiles.
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Jae J, Zheng W, Karim AM, Guo W, Lobo RF, Vlachos DG. The Role of Ru and RuO2in the Catalytic Transfer Hydrogenation of 5-Hydroxymethylfurfural for the Production of 2,5-Dimethylfuran. ChemCatChem 2014. [DOI: 10.1002/cctc.201300945] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Jae J, Mahmoud E, Lobo RF, Vlachos DG. Cascade of Liquid-Phase Catalytic Transfer Hydrogenation and Etherification of 5-Hydroxymethylfurfural to Potential Biodiesel Components over Lewis Acid Zeolites. ChemCatChem 2014. [DOI: 10.1002/cctc.201300978] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Zhang J, Cui JH, Yin T, Sun L, Li G. Activated effect of lignin on α-amylase. Food Chem 2013; 141:2229-37. [DOI: 10.1016/j.foodchem.2013.05.047] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 04/11/2013] [Accepted: 05/14/2013] [Indexed: 10/26/2022]
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Frei M. Lignin: characterization of a multifaceted crop component. ScientificWorldJournal 2013; 2013:436517. [PMID: 24348159 PMCID: PMC3848262 DOI: 10.1155/2013/436517] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Accepted: 09/24/2013] [Indexed: 11/17/2022] Open
Abstract
Lignin is a plant component with important implications for various agricultural disciplines. It confers rigidity to cell walls, and is therefore associated with tolerance to abiotic and biotic stresses and the mechanical stability of plants. In animal nutrition, lignin is considered an antinutritive component of forages as it cannot be readily fermented by rumen microbes. In terms of energy yield from biomass, the role of lignin depends on the conversion process. It contains more gross energy than other cell wall components and therefore confers enhanced heat value in thermochemical processes such as direct combustion. Conversely, it negatively affects biological energy conversion processes such as bioethanol or biogas production, as it inhibits microbial fermentation of the cell wall. Lignin from crop residues plays an important role in the soil organic carbon cycling, as it constitutes a recalcitrant carbon pool affecting nutrient mineralization and carbon sequestration. Due to the significance of lignin in several agricultural disciplines, the modification of lignin content and composition by breeding is becoming increasingly important. Both mapping of quantitative trait loci and transgenic approaches have been adopted to modify lignin in crops. However, breeding goals must be defined considering the conflicting role of lignin in different agricultural disciplines.
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Affiliation(s)
- Michael Frei
- Division of Abiotic Stress Tolerance in Crops, Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Karlrobert-Kreiten Straße 13, 53115 Bonn, Germany
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Reddy AP, Simmons CW, D’haeseleer P, Khudyakov J, Burd H, Hadi M, Simmons BA, Singer SW, Thelen MP, VanderGheynst JS. Discovery of microorganisms and enzymes involved in high-solids decomposition of rice straw using metagenomic analyses. PLoS One 2013; 8:e77985. [PMID: 24205054 PMCID: PMC3808287 DOI: 10.1371/journal.pone.0077985] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 09/16/2013] [Indexed: 02/01/2023] Open
Abstract
High-solids incubations were performed to enrich for microbial communities and enzymes that decompose rice straw under mesophilic (35°C) and thermophilic (55°C) conditions. Thermophilic enrichments yielded a community that was 7.5 times more metabolically active on rice straw than mesophilic enrichments. Extracted xylanase and endoglucanse activities were also 2.6 and 13.4 times greater, respectively, for thermophilic enrichments. Metagenome sequencing was performed on enriched communities to determine community composition and mine for genes encoding lignocellulolytic enzymes. Proteobacteria were found to dominate the mesophilic community while Actinobacteria were most abundant in the thermophilic community. Analysis of protein family representation in each metagenome indicated that cellobiohydrolases containing carbohydrate binding module 2 (CBM2) were significantly overrepresented in the thermophilic community. Micromonospora, a member of Actinobacteria, primarily housed these genes in the thermophilic community. In light of these findings, Micromonospora and other closely related Actinobacteria genera appear to be promising sources of thermophilic lignocellulolytic enzymes for rice straw deconstruction under high-solids conditions. Furthermore, these discoveries warrant future research to determine if exoglucanases with CBM2 represent thermostable enzymes tolerant to the process conditions expected to be encountered during industrial biofuel production.
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Affiliation(s)
- Amitha P. Reddy
- Joint BioEnergy Institute, Emeryville, California, United States of America
- Biological and Agricultural Engineering, University of California Davis, Davis, California, United States of America
| | - Christopher W. Simmons
- Joint BioEnergy Institute, Emeryville, California, United States of America
- Biological and Agricultural Engineering, University of California Davis, Davis, California, United States of America
- Food Science, University of California Davis, Davis, California, United States of America
| | - Patrik D’haeseleer
- Joint BioEnergy Institute, Emeryville, California, United States of America
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California, United States of America
| | - Jane Khudyakov
- Joint BioEnergy Institute, Emeryville, California, United States of America
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California, United States of America
| | - Helcio Burd
- Joint BioEnergy Institute, Emeryville, California, United States of America
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
| | - Masood Hadi
- Joint BioEnergy Institute, Emeryville, California, United States of America
- Biological and Materials Science Center, Sandia National Laboratories, Livermore, California, United States of America
| | - Blake A. Simmons
- Joint BioEnergy Institute, Emeryville, California, United States of America
- Biological and Materials Science Center, Sandia National Laboratories, Livermore, California, United States of America
| | - Steven W. Singer
- Joint BioEnergy Institute, Emeryville, California, United States of America
- Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
| | - Michael P. Thelen
- Joint BioEnergy Institute, Emeryville, California, United States of America
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California, United States of America
| | - Jean S. VanderGheynst
- Joint BioEnergy Institute, Emeryville, California, United States of America
- Biological and Agricultural Engineering, University of California Davis, Davis, California, United States of America
- * E-mail:
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Li C, Tanjore D, He W, Wong J, Gardner JL, Sale KL, Simmons BA, Singh S. Scale-up and evaluation of high solid ionic liquid pretreatment and enzymatic hydrolysis of switchgrass. BIOTECHNOLOGY FOR BIOFUELS 2013; 6:154. [PMID: 24160440 PMCID: PMC3817576 DOI: 10.1186/1754-6834-6-154] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Accepted: 10/07/2013] [Indexed: 05/22/2023]
Abstract
BACKGROUND Ionic liquid (IL) pretreatment is receiving significant attention as a potential process that enables fractionation of lignocellulosic biomass and produces high yields of fermentable sugars suitable for the production of renewable fuels. However, successful optimization and scale up of IL pretreatment involves challenges, such as high solids loading, biomass handling and transfer, washing of pretreated solids and formation of inhibitors, which are not addressed during the development stages at the small scale in a laboratory environment. As a first in the research community, the Joint BioEnergy Institute, in collaboration with the Advanced Biofuels Process Demonstration Unit, a Department of Energy funded facility that supports academic and industrial entities in scaling their novel biofuels enabling technologies, have performed benchmark studies to identify key challenges associated with IL pretreatment using 1-ethyl-3-methylimidazolium acetate and subsequent enzymatic saccharification beyond bench scale. RESULTS Using switchgrass as the model feedstock, we have successfully executed 600-fold, relative to the bench scale (6 L vs 0.01 L), scale-up of IL pretreatment at 15% (w/w) biomass loading. Results show that IL pretreatment at 15% biomass generates a product containing 87.5% of glucan, 42.6% of xylan and only 22.8% of lignin relative to the starting material. The pretreated biomass is efficiently converted into monosaccharides during subsequent enzymatic hydrolysis at 10% loading over a 150-fold scale of operations (1.5 L vs 0.01 L) with 99.8% fermentable sugar conversion. The yield of glucose and xylose in the liquid streams were 94.8% and 62.2%, respectively, and the hydrolysate generated contains high titers of fermentable sugars (62.1 g/L of glucose and 5.4 g/L cellobiose). The overall glucan and xylan balance from pretreatment and saccharification were 95.0% and 77.1%, respectively. Enzymatic inhibition by [C2mim][OAc] at high solids loadings requires further process optimization to obtain higher yields of fermentable sugars. CONCLUSION Results from this initial scale up evaluation indicate that the IL-based conversion technology can be effectively scaled to larger operations and the current study establishes the first scaling parameters for this conversion pathway but several issues must be addressed before a commercially viable technology can be realized, most notably reduction in water consumption and efficient IL recycle.
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Affiliation(s)
- Chenlin Li
- Advanced Biofuels Process Demonstration Unit, Lawrence Berkeley National Laboratory, Emeryville, CA, USA
| | - Deepti Tanjore
- Advanced Biofuels Process Demonstration Unit, Lawrence Berkeley National Laboratory, Emeryville, CA, USA
| | - Wei He
- Advanced Biofuels Process Demonstration Unit, Lawrence Berkeley National Laboratory, Emeryville, CA, USA
| | - Jessica Wong
- Advanced Biofuels Process Demonstration Unit, Lawrence Berkeley National Laboratory, Emeryville, CA, USA
| | - James L Gardner
- Advanced Biofuels Process Demonstration Unit, Lawrence Berkeley National Laboratory, Emeryville, CA, USA
| | - Kenneth L Sale
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, CA, USA
- Biological and Materials Science Center, Sandia National Laboratories, Livermore, CA, USA
| | - Blake A Simmons
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, CA, USA
- Biological and Materials Science Center, Sandia National Laboratories, Livermore, CA, USA
| | - Seema Singh
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, CA, USA
- Biological and Materials Science Center, Sandia National Laboratories, Livermore, CA, USA
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Vanholme B, Desmet T, Ronsse F, Rabaey K, Breusegem FV, Mey MD, Soetaert W, Boerjan W. Towards a carbon-negative sustainable bio-based economy. FRONTIERS IN PLANT SCIENCE 2013; 4:174. [PMID: 23761802 PMCID: PMC3669761 DOI: 10.3389/fpls.2013.00174] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2013] [Accepted: 05/16/2013] [Indexed: 05/17/2023]
Abstract
The bio-based economy relies on sustainable, plant-derived resources for fuels, chemicals, materials, food and feed rather than on the evanescent usage of fossil resources. The cornerstone of this economy is the biorefinery, in which renewable resources are intelligently converted to a plethora of products, maximizing the valorization of the feedstocks. Innovation is a prerequisite to move a fossil-based economy toward sustainable alternatives, and the viability of the bio-based economy depends on the integration between plant (green) and industrial (white) biotechnology. Green biotechnology deals with primary production through the improvement of biomass crops, while white biotechnology deals with the conversion of biomass into products and energy. Waste streams are minimized during these processes or partly converted to biogas, which can be used to power the processing pipeline. The sustainability of this economy is guaranteed by a third technology pillar that uses thermochemical conversion to valorize waste streams and fix residual carbon as biochar in the soil, hence creating a carbon-negative cycle. These three different multidisciplinary pillars interact through the value chain of the bio-based economy.
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Affiliation(s)
- Bartel Vanholme
- Department of Plant Systems Biology, Flanders Institute for BiotechnologyGent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent UniversityGent, Belgium
| | - Tom Desmet
- Department of Biochemical and Microbial Technology, Centre of Expertise – Industrial Biotechnology and Biocatalysis, Ghent UniversityGent, Belgium
| | - Frederik Ronsse
- Department of Biosystems Engineering, Ghent UniversityGent, Belgium
| | - Korneel Rabaey
- Laboratory of Microbial Ecology and Technology, Ghent UniversityGent, Belgium
- Centre for Microbial Electrosynthesis, The University of QueenslandBrisbane, Australia
- Advanced Water Management Centre, The University of QueenslandBrisbane, Australia
| | - Frank Van Breusegem
- Department of Plant Systems Biology, Flanders Institute for BiotechnologyGent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent UniversityGent, Belgium
| | - Marjan De Mey
- Department of Biochemical and Microbial Technology, Centre of Expertise – Industrial Biotechnology and Biocatalysis, Ghent UniversityGent, Belgium
| | - Wim Soetaert
- Department of Biochemical and Microbial Technology, Centre of Expertise – Industrial Biotechnology and Biocatalysis, Ghent UniversityGent, Belgium
| | - Wout Boerjan
- Department of Plant Systems Biology, Flanders Institute for BiotechnologyGent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent UniversityGent, Belgium
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Challenges for Crop Production Research in Improving Land Use, Productivity and Sustainability. SUSTAINABILITY 2013. [DOI: 10.3390/su5041632] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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