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Khan A, Mishra A, Patidar R, Pappu A. Effect of lignocellulosic corn stalk on mechanical, physical, and thermal properties of injection moulded low density polyethylene composites: An approach towards a circular economy. Heliyon 2024; 10:e25287. [PMID: 38390176 PMCID: PMC10881560 DOI: 10.1016/j.heliyon.2024.e25287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/08/2024] [Accepted: 01/24/2024] [Indexed: 02/24/2024] Open
Abstract
Escalating concern over global warming, which is mostly associated with deforestation, has led to the development of new classes of materials that can replace wood and better utilise natural resources. Presently, waste is a significant factor in recycling. In this regard, one of the leading contributors to waste is agricultural waste, which includes dried branches, leaves of trees, plants, and other organic materials. In the current study, waste from corn agriculture was utilised as a potential reinforcement for the fabrication of corn stalk-low density polyethylene (CS-LDPE) composites via an injection moulding technique at 170 °C. The different parameters were assessed to develop composites using CS, including physico-chemical, macromolecular, mineralogical, elemental, and morphological analysis. The amount of corn stalk (CS) was varied from 10 to 50 wt% with respect to the polymer. The mechanical, physical and thermal performance of the composites was examined. The density and water absorption of the composites were found to remain within the ranges of 1.00-1.11 g/cm3 and 0.22-1.01 %, respectively, whereas these parameters increased as the proportion of CS increased. The thermal conductivity decreases with the addition of CS from 0.36964 ± 0.020 to 0.22388 ± 0.002 W/mK. It was observed that adding CS to the composites increased their tensile and flexural properties, but decreased their impact strength. The maximum flexural strength of 14.40 ± 1.558 MPa, flexural modulus of 752.53 ± 180.409 MPa, tensile strength of 10.49 ± 0.946 MPa and tensile modulus of 539.79 ± 91.044 MPa were observed with a 50 % CS content. The results suggest that these materials have considerable potential to serve as a cost-effective substitute for the conventional lignocellulosic fillers in the manufacturing of wood-plastic composites.
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Affiliation(s)
- Anam Khan
- CSIR - Advanced Materials and Processes Research Institute (AMPRI), Near Habibganj Naka, Hoshangabad Road, Bhopal, Madhya Pradesh, 462026, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Alka Mishra
- CSIR - Advanced Materials and Processes Research Institute (AMPRI), Near Habibganj Naka, Hoshangabad Road, Bhopal, Madhya Pradesh, 462026, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ravi Patidar
- CSIR - Advanced Materials and Processes Research Institute (AMPRI), Near Habibganj Naka, Hoshangabad Road, Bhopal, Madhya Pradesh, 462026, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Asokan Pappu
- CSIR - Advanced Materials and Processes Research Institute (AMPRI), Near Habibganj Naka, Hoshangabad Road, Bhopal, Madhya Pradesh, 462026, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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Ahmad Sobri MZ, Khoo KS, Sahrin NT, Ardo FM, Ansar S, Hossain MS, Kiatkittipong W, Lin C, Ng HS, Zaini J, Bilad MR, Lam MK, Lim JW. Kinetic model derived from machine learning for accurate prediction of microalgal hydrogen production via conversion from low thermally pre-treated palm kernel expeller waste. CHEMOSPHERE 2023; 338:139526. [PMID: 37459926 DOI: 10.1016/j.chemosphere.2023.139526] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/21/2023] [Accepted: 07/14/2023] [Indexed: 07/22/2023]
Abstract
The depletion of fossil fuel sources and increase in energy demands have increased the need for a sustainable alternative energy source. The ability to produce hydrogen from microalgae is generating a lot of attention in both academia and industry. Due to complex production procedures, the commercial production of microalgal biohydrogen is not yet practical. Developing the most optimum microalgal hydrogen production process is also very laborious and expensive as proven from the experimental measurement. Therefore, this research project intended to analyse the random time series dataset collected during microalgal hydrogen productions while using various low thermally pre-treated palm kernel expeller (PKE) waste via machine learning (ML) approach. The analysis of collected dataset allowed the derivation of an enhanced kinetic model based on the Gompertz model amidst the dark fermentative hydrogen production that integrated thermal pre-treatment duration as a function within the model. The optimum microalgal hydrogen production attained with the enhanced kinetic model was 387.1 mL/g microalgae after 6 days with 1 h thermally pre-treated PKE waste at 90 °C. The enhanced model also had better accuracy (R2 = 0.9556) and net energy ratio (NER) value (0.71) than previous studies. Finally, the NER could be further improved to 0.91 when the microalgal culture was reused, heralding the potential application of ML in optimizing the microalgal hydrogen production process.
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Affiliation(s)
- Mohamad Zulfadhli Ahmad Sobri
- HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Kuan Shiong Khoo
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan, Taiwan; Centre for Herbal Pharmacology and Environmental Sustainability, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, 603103, Tamil Nadu, India
| | - Nurul Tasnim Sahrin
- HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Fatima Musa Ardo
- HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Sabah Ansar
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh, 11433, Saudi Arabia
| | - Md Sohrab Hossain
- HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Worapon Kiatkittipong
- Department of Chemical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Nakhon Pathom, 73000, Thailand.
| | - Chuxia Lin
- Centre for Regional and Rural Futures, Faculty of Science, Engineering and Built Environment, Deakin University, Burwood, VIC, 3125, Australia
| | - Hui-Suan Ng
- Centre for Research and Graduate Studies, University of Cyberjaya, Persiaran Bestari, 63000, Cyberjaya, Selangor, Malaysia
| | - Juliana Zaini
- Faculty of Integrated Technologies, Universiti Brunei Darussalam, Jalan Tungku Link, BE1410, Brunei
| | - Muhammad Roil Bilad
- Faculty of Integrated Technologies, Universiti Brunei Darussalam, Jalan Tungku Link, BE1410, Brunei
| | - Man Kee Lam
- HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Jun Wei Lim
- HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak Darul Ridzuan, Malaysia; Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, 602105, India.
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Alengebawy A, Ran Y, Ghimire N, Osman AI, Ai P. Rice straw for energy and value-added products in China: a review. ENVIRONMENTAL CHEMISTRY LETTERS 2023; 21:1-32. [PMID: 37362014 PMCID: PMC10267560 DOI: 10.1007/s10311-023-01612-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 05/06/2023] [Indexed: 06/28/2023]
Abstract
The rise of global waste and the decline of fossil fuels are calling for recycling waste into energy and materials. For example, rice straw, a by-product of rice cultivation, can be converted into biogas and by-products with added value, e.g., biofertilizer, yet processing rice straw is limited by the low energy content, high ash and silica, low nitrogen, high moisture, and high-quality variability. Here, we review the recycling of rice straw with focus on the global and Chinese energy situations, conversion of rice straw into energy and gas, biogas digestate management, cogeneration, biogas upgrading, bioeconomy, and life cycle assessment. The quality of rice straw can be improved by pretreatments, such as baling, ensiling, and co-digestion of rice straw with other feedstocks. The biogas digestate can be used to fertilize soils. The average annual potential energy of collectable rice straw, with a lower heating value of 15.35 megajoule/kilogram, over the past ten years (2013-2022) could reach 2.41 × 109 megajoule.
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Affiliation(s)
- Ahmed Alengebawy
- College of Engineering, Huazhong Agricultural University, Wuhan, 430070 China
- Technology & Equipment Center for Carbon Neutrality, Huazhong Agricultural University, Wuhan, 430070 China
| | - Yi Ran
- College of Engineering, Huazhong Agricultural University, Wuhan, 430070 China
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu, 610041 China
| | - Nirmal Ghimire
- Department of Chemical Science and Engineering, Kathmandu University, Dhulikhel, 44600 Nepal
| | - Ahmed I. Osman
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG Northern Ireland, UK
| | - Ping Ai
- College of Engineering, Huazhong Agricultural University, Wuhan, 430070 China
- Technology & Equipment Center for Carbon Neutrality, Huazhong Agricultural University, Wuhan, 430070 China
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Effect of Ammonia–Autoclave Pretreatment on the Performance of Corn Straw and Cow Manure Batch Anaerobic Digestion. FERMENTATION-BASEL 2023. [DOI: 10.3390/fermentation9020178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Biomass pretreatment is a critical method for improving the anaerobic digestion (AD) performance of lignocellulosic feedstocks. In this study, an effective combined ammonia–autoclave pretreatment method was selected for the pretreatment of corn straw at 90 °C using four ammonia concentrations (7%, 9%, 11%, and 13%). The results showed that the combined pretreatment improved the substrate’s degradation efficiency and the system’s buffer capacity, and significantly improved the hydrolysis and biogas production performance of corn straw. After pretreatment, the lignin removal rate increased by 11.28–39.69%, and the hemicellulose degradation rate increased from 10.12% to 21.23%. Pretreatment of corn straw with 9% ammonia and an autoclave gave the highest methane yield of 257.11 mL/gVS, which was 2.32-fold higher than that of untreated corn straw, making it the optimal pretreatment condition for corn straw. Therefore, the combined ammonia–autoclave pretreatment technology can further improve the AD performance of corn straw.
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Faisal S, Ebaid R, Xiong M, Huang J, Wang Q, El-Hefnawy M, Abomohra A. Maximizing the energy recovery from rice straw through two-step conversion using eggshell-catalytic pyrolysis followed by enhanced anaerobic digestion using calcium-rich biochar. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:159984. [PMID: 36356751 DOI: 10.1016/j.scitotenv.2022.159984] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 11/01/2022] [Accepted: 11/02/2022] [Indexed: 06/16/2023]
Abstract
Anaerobic digestion of lignocelluloses for biogas production is greatly restricted by the poor biomass degradability. Herein, a novel approach is suggested to enhance the energy recovery from rice straw through a two-step conversion using eggshell-based catalytic pyrolysis followed by biochar-based anaerobic co-digestion. Pyrolysis with eggshell significantly enhanced the crude bio-oil yield by 4.6 %. Anaerobic digestion of rice straw using 4 g L-1 of rice straw biochar (RB) showed the highest recorded biogas yield of 503.7 L kg-1 VS, with 268.6 L kg-1 VS biomethane yield. However, 4 g L-1 of calcium-enriched eggshell rice straw biochar (ERB) enhanced the biomethane yield to 281.8 L kg-1 VS, which represented 95.6 % higher than the control. It was attributed to enhancement of biomethanation, which resulted in 74.5 % maximum recorded biomethane content at the 7th day of anaerobic digestion. Microbial analysis confirmed that Methanosarciniales was the most dominant Archael group in the control (14.84 %), which increased sharply to 73.91 % and 91.66 % after addition of 4 g L-1 RB and ERB, respectively. The suggested route enhanced the energy recovery in the form of bio-oil and biomethane by 41.6 %.
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Affiliation(s)
- Shah Faisal
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, PR China; Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu 610065, PR China
| | - Reham Ebaid
- Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu 610065, PR China
| | - Min Xiong
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, PR China
| | - Jin Huang
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, PR China
| | - Qingyuan Wang
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, PR China; Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu 610065, PR China.
| | - Mohamed El-Hefnawy
- Department of Chemistry, Rabigh College of Science and Arts, King Abdulaziz University, Rabigh 21911, Saudi Arabia; Chemistry Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Abdelfatah Abomohra
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, PR China.
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Eraky M, Elsayed M, Qyyum MA, Ai P, Tawfik A. A new cutting-edge review on the bioremediation of anaerobic digestate for environmental applications and cleaner bioenergy. ENVIRONMENTAL RESEARCH 2022; 213:113708. [PMID: 35724728 DOI: 10.1016/j.envres.2022.113708] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 06/05/2022] [Accepted: 06/14/2022] [Indexed: 06/15/2023]
Abstract
Circular agriculture and economy systems have recently emerged around the world. It is a long-term environmental strategy that promotes economic growth and food security while reducing negative environmental consequences. Anaerobic digestion (AD) process has a high contribution and effective biodegradation route for bio-wastes valorization and reducing greenhouse gases (GHGs) emissions. However, the remaining massive digestate by-product contains non-fermented organic fractions, macro and/or micro-nutrients, heavy metals, and metalloids. Direct application of digestate in agriculture negatively affected the properties of the soil due to the high load of nutrients as well as the residuals of GHGs are emitted to the environment. Recycling and valorizing of anaerobic digestate is the main challenge for the sustainable biogas industry and nutrients recovery. To date, there is no global standard process for the safe digestate handling. This review described the biochemical composition and separation processes of anaerobic digestate. Further, advanced physical, chemical, and biological remediation's of the diverse digestate are comprehensively discussed. Moreover, recycling technologies such as phyco-remediation, bio-floc, and entomoremediation were reviewed as promising solutions to enhance energy and nutrient recovery, making the AD technology more sustainable with additional profits. Finally, this review gives an in-depth discussion of current biorefinery technologies, key roles of process parameters, and identifies challenges of nutrient recovery from digestate and prospects for future studies at large scale.
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Affiliation(s)
- Mohamed Eraky
- College of Engineering, Huazhong Agricultural University, 430070, Wuhan, China
| | - Mahdy Elsayed
- Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, 12613, Giza, Egypt
| | - Muhammad Abdul Qyyum
- Department of Petroleum and Chemical Engineering, College of Engineering, Sultan Qaboos University, Muscat, Oman.
| | - Ping Ai
- College of Engineering, Huazhong Agricultural University, 430070, Wuhan, China.
| | - Ahmed Tawfik
- National Research Centre, Water Pollution Research Department, P.O. Box 12622, Giza, Egypt.
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Madadi M, Song G, Karimi K, Zhu D, Elsayed M, Sun F, Abomohra A. One-step lignocellulose fractionation using acid/pentanol pretreatment for enhanced fermentable sugar and reactive lignin production with efficient pentanol retrievability. BIORESOURCE TECHNOLOGY 2022; 359:127503. [PMID: 35728765 DOI: 10.1016/j.biortech.2022.127503] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/16/2022] [Accepted: 06/17/2022] [Indexed: 06/15/2023]
Abstract
To valorize whole lignocellulosic biomass, this study proposed a biphasic solvent system using dilute acid (DA)/pentanol pretreatment. Effects of the key factors, i.e., temperature and pentanol concentration, on aspen were evaluated. Under identified optimal pretreatment conditions (160 °C, 60% pentanol), 85% and 91% of lignin and hemicellulose were solubilized in separate organic and liquid phases, respectively, while 91.1% of cellulose was retained in solid fraction. Enzymatic digestibility efficiency of pretreated cellulose was ∼ 6.4-times higher than that of untreated biomass. Notably, excellent pentanol recovery rates were obtained after four-times recycling (84%) with great cellulose digestibility (81%) and delignification (71%) performance. The recovered lignin contained low levels of contaminated sugars (<1%), while it could stabilize and protect high amounts of β-O-4 bonds. Besides, high phenolic OH content was found in lignin, which could be utilized for lignin-based biomaterials. Therefore, DA/pentanol pretreatment is an innovative promising technology for lignocellulosic valorization towards biorefinery.
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Affiliation(s)
- Meysam Madadi
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Guojie Song
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Keikhosro Karimi
- Department of Chemical Engineering, Vrije Universiteit Brussel, 1050 Brussels, Belgium; Department of Chemical Engineering, Isfahan University of Technology, 84156-83111 Isfahan, Iran
| | - Daochen Zhu
- Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Mahdy Elsayed
- Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt
| | - Fubao Sun
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Abdelfatah Abomohra
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China
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Bonilla Loaiza AM, Rodríguez-Jasso RM, Belmares R, López-Badillo CM, Araújo RG, Aguilar CN, Chávez ML, Aguilar MA, Ruiz HA. Fungal Proteins from Sargassum spp. Using Solid-State Fermentation as a Green Bioprocess Strategy. Molecules 2022; 27:3887. [PMID: 35745010 PMCID: PMC9230583 DOI: 10.3390/molecules27123887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/13/2022] [Accepted: 06/15/2022] [Indexed: 11/25/2022] Open
Abstract
The development of green technologies and bioprocesses such as solid-state fermentation (SSF) is important for the processing of macroalgae biomass and to reduce the negative effect of Sargassum spp. on marine ecosystems, as well as the production of compounds with high added value such as fungal proteins. In the present study, Sargassum spp. biomass was subjected to hydrothermal pretreatments at different operating temperatures (150, 170, and 190 °C) and pressures (3.75, 6.91, and 11.54 bar) for 50 min, obtaining a glucan-rich substrate (17.99, 23.86, and 25.38 g/100 g d.w., respectively). The results indicate that Sargassum pretreated at a pretreatment temperature of 170 °C was suitable for fungal growth. SSF was performed in packed-bed bioreactors, obtaining the highest protein content at 96 h (6.6%) and the lowest content at 72 h (4.6%). In contrast, it was observed that the production of fungal proteins is related to the concentration of sugars. Furthermore, fermentation results in a reduction in antinutritional elements, such as heavy metals (As, Cd, Pb, Hg, and Sn), and there is a decrease in ash content during fermentation kinetics. Finally, this work shows that Aspergillus oryzae can assimilate nutrients found in the pretreated Sargassum spp. to produce fungal proteins as a strategy for the food industry.
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Affiliation(s)
- Adriana M. Bonilla Loaiza
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
| | - Rosa M. Rodríguez-Jasso
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
| | - Ruth Belmares
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
| | - Claudia M. López-Badillo
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
| | - Rafael G. Araújo
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
| | - Cristóbal N. Aguilar
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
| | - Mónica L. Chávez
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
| | - Miguel A. Aguilar
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Saltillo, Av. Industria Metalúrgica 1062, Ramos Arizpe C.P. 25900, Coahuila, Mexico;
| | - Héctor A. Ruiz
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
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Salama ES, El-Fatah Abomohra A. Introductory Chapter: From Biogas Lab-Scale towards Industrialization. BIOGAS - BASICS, INTEGRATED APPROACHES, AND CASE STUDIES 2022. [DOI: 10.5772/intechopen.104500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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10
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Elsayed M, Abomohra AEF. Sequential algal biofuel production through whole biomass conversion. HANDBOOK OF ALGAL BIOFUELS 2022:385-404. [DOI: 10.1016/b978-0-12-823764-9.00028-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Net Energy Analysis and Techno-Economic Assessment of Co-Production of Bioethanol and Biogas from Cellulosic Biomass. FERMENTATION-BASEL 2021. [DOI: 10.3390/fermentation7040229] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Co-production is a process based on the biorefinery concept that maximizes the benefit of biomass by reusing residue from the production of one product to produce others. In this regard, biogas is one of the most researched second products for the production of ethanol from cellulosic biomass. However, operating this scheme requires additional investment in biogas processing equipment. This review compiles data from research studies on the co-production of bioethanol and biogas from lignocellulosic biomass to determine which is more worthwhile: leaving the residue or investing more to benefit from the second product. According to previous research, ethanol stillage can be converted to biogas via anaerobic digestion, increasing energy output by 2–3 fold. Techno-economic studies demonstrated that the co-production process reduces the minimum ethanol selling price to a level close to the market price of ethanol, implying the possibility of industrializing cellulosic ethanol production through this scheme.
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Wu P, Kang X, Wang W, Yang G, He L, Fan Y, Cheng X, Sun Y, Li L. Assessment of Coproduction of Ethanol and Methane from Pennisetum purpureum: Effects of Pretreatment, Process Performance, and Mass Balance. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2021; 9:10771-10784. [PMID: 35141053 PMCID: PMC8815079 DOI: 10.1021/acssuschemeng.1c02010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 07/24/2021] [Indexed: 06/14/2023]
Abstract
To overcome the structural complexity and improve the bioconversion efficiency of Pennisetum purpureum into bioethanol or/and biomethane, the effects of ensiling pretreatment, NaOH pretreatment, and their combination on digestion performance and mass flow were comparatively investigated. The coproduction of bioethanol and biomethane showed that 65.2 g of ethanol and 102.6 g of methane could be obtained from 1 kg of untreated Pennisetum purpureum, and pretreatment had significant impacts on the production; however, there is no significant difference between the results of NaOH pretreatment and ensiling-NaOH pretreatment in terms of production improvement. Among them, 1 kg of ensiling-NaOH treated Pennisetum purpureum could yield 269.4 g of ethanol and 144.5 g of methane, with a respective increase of 313.2% and 40.8% compared to that from the untreated sample; this corresponded to the final energy production of 14.5 MJ, with the energy conversion efficiency of 46.8%. In addition, for the ensiling-NaOH treated Pennisetum purpureum, the energy recovery from coproduction (process III) was 98.9% higher than that from enzymatic hydrolysis and fermentation only (process I) and 53.6% higher than that from anaerobic digestion only (process II). This indicated that coproduction of bioethanol and biomethane from Pennisetum purpureum after ensiling and NaOH pretreatment is an effective method to improve its conversion efficiency and energy output.
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Affiliation(s)
- Peiwen Wu
- Guangzhou
Institute of Energy Conversion, Chinese
Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, China
- Key
Laboratory of Ministry of Education for Water Quality Security and
Protection in Pearl River Delta, Guangdong Provincial Key Laboratory
of Radionuclides Pollution Control and Resources, School of Environmental
Science and Engineering, Guangzhou University, No. 230, Wai Huan Xi Road, Guangzhou 510006, China
| | - Xihui Kang
- MaREI
Centre, Environmental Research Institute, University College Cork, 4 Lee Road, Sunday’s Well, Cork, Ireland
| | - Wen Wang
- Guangzhou
Institute of Energy Conversion, Chinese
Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, China
- Guangzhou
Institute of Energy Conversion, CAS Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, P.R. China
- Guangdong
Key Laboratory of New and Renewable Energy Research and Development, No. 2, Nengyuan Road, Guangzhou 510640, P.R. China
| | - Gaixiu Yang
- Guangzhou
Institute of Energy Conversion, Chinese
Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, China
- Guangzhou
Institute of Energy Conversion, CAS Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, P.R. China
- Guangdong
Key Laboratory of New and Renewable Energy Research and Development, No. 2, Nengyuan Road, Guangzhou 510640, P.R. China
| | - Linsong He
- Guangzhou
Institute of Energy Conversion, Chinese
Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, China
- Guangzhou
Institute of Energy Conversion, CAS Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, P.R. China
- Guangdong
Key Laboratory of New and Renewable Energy Research and Development, No. 2, Nengyuan Road, Guangzhou 510640, P.R. China
| | - Yafeng Fan
- Guangzhou
Institute of Energy Conversion, Chinese
Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, China
- Guangzhou
Institute of Energy Conversion, CAS Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, P.R. China
- Guangdong
Key Laboratory of New and Renewable Energy Research and Development, No. 2, Nengyuan Road, Guangzhou 510640, P.R. China
| | - Xingyu Cheng
- Guangzhou
Institute of Energy Conversion, Chinese
Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, China
- Guangzhou
Institute of Energy Conversion, CAS Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, P.R. China
- Guangdong
Key Laboratory of New and Renewable Energy Research and Development, No. 2, Nengyuan Road, Guangzhou 510640, P.R. China
| | - Yongming Sun
- Guangzhou
Institute of Energy Conversion, Chinese
Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, China
- Guangzhou
Institute of Energy Conversion, CAS Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, P.R. China
- Guangdong
Key Laboratory of New and Renewable Energy Research and Development, No. 2, Nengyuan Road, Guangzhou 510640, P.R. China
| | - Lianhua Li
- Guangzhou
Institute of Energy Conversion, Chinese
Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, China
- Guangzhou
Institute of Energy Conversion, CAS Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No. 2, Nengyuan Road, Guangzhou 510640, P.R. China
- Guangdong
Key Laboratory of New and Renewable Energy Research and Development, No. 2, Nengyuan Road, Guangzhou 510640, P.R. China
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13
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Wang J, Cao L, Liu Y, Zhang Q, Ruan R, Luo X. Effect of acclimatized paddy soil microorganisms using swine wastewater on degradation of rice straw. BIORESOURCE TECHNOLOGY 2021; 332:125039. [PMID: 33845317 DOI: 10.1016/j.biortech.2021.125039] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
Rice straw (RS) is one of abundant agricultural waste for biogas production in China. However, the low carbon-methane conversion rate limits its wide application due to the low degradation rate of RS during fermentation. This study investigated the effect of acclimatized paddy soil microorganisms using swine wastewater on degradation of RS before anaerobic digestion. The total organic carbon, reducing sugar and NH4+-N content of paddy soil + RS + swine wastewater (PRS) (653.50 mg/L) was higher than that of other groups after 19 days. The carboxymethyl cellulose activity (4.01 IU), cellulose/lignin ratio (5.25) and the degradation rate of lignin (51.96%) in PRS were higher than those of other groups. The Firmicutes (21.02%), Chloroflexi (12.48%), Proteobacteria (20.92%), and Bacteroidetes (25.78%) were the main fermentation phyla in PRS during acclimatization. These results indicated that the acclimatized paddy soil microorganisms using swine wastewater (SW) could degrade RS more efficiently.
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Affiliation(s)
- Jingjing Wang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Leipeng Cao
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Qi Zhang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Roger Ruan
- Center for Biorefining and Dept. of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN 55108, USA
| | - Xuan Luo
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
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14
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Tan J, Li Y, Tan X, Wu H, Li H, Yang S. Advances in Pretreatment of Straw Biomass for Sugar Production. Front Chem 2021; 9:696030. [PMID: 34164381 PMCID: PMC8215366 DOI: 10.3389/fchem.2021.696030] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 05/12/2021] [Indexed: 11/29/2022] Open
Abstract
Straw biomass is an inexpensive, sustainable, and abundant renewable feedstock for the production of valuable chemicals and biofuels, which can surmount the main drawbacks such as greenhouse gas emission and environmental pollution, aroused from the consumption of fossil fuels. It is rich in organic content but is not sufficient for extensive applications because of its natural recalcitrance. Therefore, suitable pretreatment is a prerequisite for the efficient production of fermentable sugars by enzymatic hydrolysis. Here, we provide an overview of various pretreatment methods to effectively separate the major components such as hemicellulose, cellulose, and lignin and enhance the accessibility and susceptibility of every single component. This review outlines the diverse approaches (e.g., chemical, physical, biological, and combined treatments) for the excellent conversion of straw biomass to fermentable sugars, summarizes the benefits and drawbacks of each pretreatment method, and proposes some investigation prospects for the future pretreatments.
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Affiliation(s)
- Jinyu Tan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State Local Joint Engineering Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, China.,Institute of Crops Germplasm Resources, Guizhou Academy of Agricultural Sciences, Guiyang, China
| | - Yan Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State Local Joint Engineering Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, China
| | - Xiang Tan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State Local Joint Engineering Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, China
| | - Hongguo Wu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State Local Joint Engineering Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, China
| | - Hu Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State Local Joint Engineering Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, China
| | - Song Yang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State Local Joint Engineering Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, China
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15
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Tao Q, Li B, Chen Y, Zhao J, Li Q, Chen Y, Peng Q, Yuan S, Li H, Huang R, Wang C. An integrated method to produce fermented liquid feed and biologically modified biochar as cadmium adsorbents using corn stalks. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 127:112-120. [PMID: 33933868 DOI: 10.1016/j.wasman.2021.04.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 03/11/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
The recycling of agricultural waste is a global challenge to the sustainable development of agriculture. By using corn stalks, we studied the feasibility of combining anaerobic fermentation and pyrolysis processes to produce both fermentated liquid feed and biologically modified biocharas cadmium adsorbents. Anaerobic ensiling enhanced the biodegradation of corn stalks by increasing crude protein and reducing fiber contents. After 24-h anaerobic fermentation, corn stalks silage was decomposed into the liquid filtrate and non-fermented residue. Fermented liquid feed (FLF) was prepared by storing feed and liquid filtrate (1:4.0, wt/wt) in a closed tank at 20 °C for 4 days, which showed desired properties (pH < 4.5, lactic acid bacteria greater than 9.0 lg cfu g-1, lactic acid greater than 100 mmol L-1). The non-fermented residue was pyrolyzed at 500 °C to prepare biologically modified biochar (BCB24). In comparison with pristine biochar produced from corn stalks (CB), anaerobic ensiling and anaerobic fermentation significantly increased the surface area, oxygen-containing functional groups, as well as mineral components in BCB24. The maximum sorption capacity of Cd(II) for BCB24 was 2.1 times of CB, suggesting that BCB24 is an effective adsorbent for Cd(II) removal from water. Our results indicated that coupling anaerobic fermentation and pyrolysis technology can significantly improve the efficiency of corn stalks recycling.
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Affiliation(s)
- Qi Tao
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Bing Li
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China.
| | - Yixuan Chen
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Junwen Zhao
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Qiquan Li
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Yulan Chen
- Sichuan Tobacco Company Liangshanzhou Company, Xichang Sichuan 615000, China
| | - Quanhui Peng
- Institute of Animal Nutrition, Key Laboratory of Bovine Low Carbon Farming and Safe Production, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Shu Yuan
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Huanxiu Li
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Rong Huang
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Changquan Wang
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China.
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16
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Vedovatto F, Bonatto C, Bazoti SF, Venturin B, Alves SL, Kunz A, Steinmetz RLR, Treichel H, Mazutti MA, Zabot GL, Tres MV. Production of biofuels from soybean straw and hull hydrolysates obtained by subcritical water hydrolysis. BIORESOURCE TECHNOLOGY 2021; 328:124837. [PMID: 33607449 DOI: 10.1016/j.biortech.2021.124837] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/07/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
The objective of this study was to evaluate the ethanol production by Wickerhamomyces sp. using soybean straw and hull hydrolysates obtained by subcritical water hydrolysis and, afterward, the biogas production using the fermented hydrolysates. Ethanol was produced using the straw and hull hydrolysates diluted and supplement with glucose, reaching 5.57 ± 0.01 g/L and 6.11 ± 0.11 g/L, respectively. The fermentation in a bioreactor with changing the pH to 7.0 allowed achieving maximum ethanol production of 4.03 and 3.60 g/L for straw and hull hydrolysates at 24 h, respectively. The biogas productions obtained for the fermented hydrolysates of straw with and without changing the pH were 739 ± 37 and 652 ± 34 NmL/gVSad, respectively. The fermented hydrolysate of hull without changing the pH presented 620 ± 26 NmL/gVSad. The soybean residues produced biofuels, indicating these residues show potential as raw material for renewable energy production.
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Affiliation(s)
- Felipe Vedovatto
- Department of Agricultural Engineering, Federal University of Santa Maria, 1000, Roraima av., Santa Maria 97105-900, Brazil; Laboratory of Agroindustrial Processes Engineering (LAPE), Federal University of Santa Maria, 1040, Sete de Setembro av., Cachoeira do Sul 96506-322, Brazil
| | - Charline Bonatto
- Laboratory of Microbiology and Bioprocess, Federal University of Fronteira Sul, 200, ERS 135 - km 72, Erechim 99700-970, Brazil; Department of Chemical and Food Engineering, Federal University of Santa Catarina, Trindade, Florianópolis 88040-900, Brazil
| | - Suzana F Bazoti
- Laboratory of Microbiology and Bioprocess, Federal University of Fronteira Sul, 200, ERS 135 - km 72, Erechim 99700-970, Brazil
| | - Bruno Venturin
- Western Paraná State University, R. Universitária, Cascavel 85819-110, Brazil
| | - Sérgio L Alves
- Laboratory of Biochemistry and Genetics, Federal University of Fronteira Sul, Rodovia SC 484 - Km 02, Chapecó, 89815-899, Brazil
| | - Airton Kunz
- Laboratory of Microbiology and Bioprocess, Federal University of Fronteira Sul, 200, ERS 135 - km 72, Erechim 99700-970, Brazil; Western Paraná State University, R. Universitária, Cascavel 85819-110, Brazil; Embrapa Suínos e Aves, BR 153 - Km 110, Concórdia 89710-028, Brazil
| | | | - Helen Treichel
- Laboratory of Microbiology and Bioprocess, Federal University of Fronteira Sul, 200, ERS 135 - km 72, Erechim 99700-970, Brazil
| | - Marcio A Mazutti
- Department of Agricultural Engineering, Federal University of Santa Maria, 1000, Roraima av., Santa Maria 97105-900, Brazil; Department of Chemical Engineering, Federal University of Santa Maria, 1000, Roraima av., Santa Maria 97105-900, Brazil
| | - Giovani L Zabot
- Laboratory of Agroindustrial Processes Engineering (LAPE), Federal University of Santa Maria, 1040, Sete de Setembro av., Cachoeira do Sul 96506-322, Brazil
| | - Marcus V Tres
- Laboratory of Agroindustrial Processes Engineering (LAPE), Federal University of Santa Maria, 1040, Sete de Setembro av., Cachoeira do Sul 96506-322, Brazil.
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17
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Almutairi AW, El-Sayed AEKB, Reda MM. Evaluation of high salinity adaptation for lipid bio-accumulation in the green microalga Chlorella vulgaris. Saudi J Biol Sci 2021; 28:3981-3988. [PMID: 34220255 PMCID: PMC8241604 DOI: 10.1016/j.sjbs.2021.04.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/31/2021] [Accepted: 04/04/2021] [Indexed: 11/30/2022] Open
Abstract
Aiming at the reutilizing wastewater for algal growth and biomass production, a saline water rejected from reverse osmosis (RO) facility (salinity 67.59 g L−1) was used to cultivate the pre-adapted green microalga Chlorella vulgaris. The inoculum was prepared by growing cells in modified BG-11 medium, and adaptation was performed by applying a gradual increase in salinity (56.0 g L−1 NaCl and 125 ppm FeSO4·7H2O) to the culture in 200 L photobioreactor. Experiments using the adapted alga were performed using original-rejected water (ORW) and treated rejected water (TRW) comparing with the recommended growth medium (BG-11). The initial salinity of ORW was chemically reduced to 39.1 g L−1 to obtain TRW. Vertical photobioreactors (15 L) was used for indoor growth experiments. Growth in BG-11 resulted in 1.23 g L−1, while the next adaptation growth reached 2.14 g L−1 of dry biomass. The dry weights of re-cultivated Chlorella after adaptation were 1.49 and 2.19 g L−1 from ORW and TRW; respectively. The cellular oil content was only 12% when cells grown under control conditions verses to 14.3 and 15.42% with original and treated water, respectively. Induction of stress affected the fatty acid methyl esters (FAMEs) profile and the properties of the resulting biodiesel. The present results indicated that induction of stress by high salinity improves the quality of FAMEs that can be used as a promising biodiesel fuel.
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Affiliation(s)
- Adel W. Almutairi
- Biological Sciences Department, Rabigh-Faculty of Science & Arts, King Abdulaziz University, Saudi Arabia
- Corresponding author.
| | | | - Marwa M. Reda
- Central Lab for Environmental Quality Monitoring, National Water Research Center, Egypt
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18
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Utilization of Barley Straw as Feedstock for the Production of Different Energy Vectors. Processes (Basel) 2021. [DOI: 10.3390/pr9040726] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
During the bioethanol production process, vast amounts of residues are generated as process waste. To extract more value from lignocellulosic biomass and improve process economics, these residues should be used as feedstock in additional processes for the production of energy or fuels. In this paper, barley straw was used for bioethanol production and the residues were valorized using anaerobic digestion (AD) or used for the production of heat and power by combustion. A traditional three-step bioethanol production process was used, and the biomass residues obtained from different stages of the process were analyzed. Finally, mass and energy balances were calculated to quantify material flow and assess the different technological routes for biomass utilization. Up to 90 kg of ethanol could be produced from 1 t of biomass and additional biogas and energy generated from processing residues can increase the energy yield to over 220%. The results show that in terms of energy output, combustion was the preferable route for processing biomass residues. However, the production of biogas is also an attractive solution to increase revenue in the bioethanol production process.
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19
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Manorma, Ferreira I, Alves P, Gil M, Gando-Ferreira LM. Lignin separation from black liquor by mixed matrix polysulfone nanofiltration membrane filled with multiwalled carbon nanotubes. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118231] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Lakshmikandan M, Murugesan A, Wang S, El-Fatah Abomohra A. Optimization of acid hydrolysis on the green seaweed Valoniopsis pachynema and approach towards mixotrophic microalgal biomass and lipid production. RENEWABLE ENERGY 2021; 164:1052-1061. [DOI: 10.1016/j.renene.2020.10.062] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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21
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Abomohra AEF, Almutairi AW. A close-loop integrated approach for microalgae cultivation and efficient utilization of agar-free seaweed residues for enhanced biofuel recovery. BIORESOURCE TECHNOLOGY 2020; 317:124027. [PMID: 32829118 DOI: 10.1016/j.biortech.2020.124027] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/12/2020] [Accepted: 08/13/2020] [Indexed: 06/11/2023]
Abstract
The aim of this work was to evaluate a novel integrated biorefinery route for enhanced energy recovery from seaweeds and microalgae. Agar extraction prior to anaerobic digestion recorded the highest biogas productivity of 32.57 L kg-1 VS d-1. Supplementation of the microalgal growth medium with anaerobic digestate from agar-extracted biomass enhanced the microalgal growth, recording the highest dry weight of 4.57 g L-1 at 20% digestate ratio. In addition, lipid content showed the highest value of 25.8 %dw. Due to enhancement of growth and lipid content, 20% digestate ratio showed the highest lipid productivity and FAMEs recovery (65.2 mg L-1 d-1 and 123.3 mg g-1dw, respectively), with enhanced biodiesel characteristics. The present study estimated annual revenue of 1252.7 US$ ton-1 from the whole Gracilaria multipartita biomass conversion into biogas, while that through agar extraction deserved 36087.0 US$ ton-1, with enhanced annual biodiesel yield by 69.7% over the control medium.
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Affiliation(s)
- Abd El-Fatah Abomohra
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt.
| | - Adel W Almutairi
- Biological Sciences Department, Faculty of Science & Arts, King Abdulaziz University, Rabigh 21911, Saudi Arabia
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22
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Ma Y, Shen Y, Liu Y. State of the art of straw treatment technology: Challenges and solutions forward. BIORESOURCE TECHNOLOGY 2020; 313:123656. [PMID: 32561106 DOI: 10.1016/j.biortech.2020.123656] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 06/05/2020] [Accepted: 06/06/2020] [Indexed: 05/28/2023]
Abstract
Straw as an agricultural byproduct has been recognized as a potential resource. However, open-field straw burning is still the main mean in many regions of the world, which causes the wasting of resource and air pollution. Recently, many technologies have been developed for energy and resource recovery from straw, of which the biological approach has attracted growing interests because of its economically viable and eco-friendly nature. However, pretreatment of straw prior to biological processes is essential, and largely determines the process feasibility, economic viability and environmental sustainability. Thus, this review attempts to offer a critical and holistic analysis of current straw pretreatment technologies and management practices. Specifically, an integrated biological processes coupled with microbial degradation and enzymatic hydrolysis was proposed, and its potential benefits, limitations and challenges associated with future large-scale straw treatment were also elaborated, together with the perspectives and directions forward.
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Affiliation(s)
- Yingqun Ma
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore
| | - Yanqing Shen
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore
| | - Yu Liu
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
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23
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Meng L, Jin K, Yi R, Chen M, Peng J, Pan Y. Enhancement of bioenergy recovery from agricultural wastes through recycling of cellulosic alcoholic fermentation vinasse for anaerobic co-digestion. BIORESOURCE TECHNOLOGY 2020; 311:123511. [PMID: 32417660 DOI: 10.1016/j.biortech.2020.123511] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/05/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
Cellulosic alcoholic fermentation generates large amounts of vinasse, which was utilized in the present work to enhance the anaerobic digestion of rice straw and swine manure at different total solid (TS) contents. Straw fermentation resulted in bioethanol and vinasse yields of 95.2 g and 857.7 mL, respectively, per kg dry straw. Vinasse-straw co-digestion showed the highest cumulative biogas yield of 633.4 L kg-1 VS at 3% TS. Therefore, biogas productivity from co-digestion represented 92.1% higher than that of straw mono-digestion. Vinasse-manure co-digestion showed the highest cumulative biogas yield of 676.7 L kg-1 VS at 3% TS at a shorter technical digestion time, which resulted in 53.9% higher biomethane productivity than the corresponding vinasse-straw. Consequently, vinasse co-digestion at all studied TS ratios enhanced the total gross energy output rate (GEORtotal) over mono-digestion. Amongst, vinasse-manure co-digestion at 3% TS showed 7.9% higher GEORtotal than the highest recorded value from vinasse-straw co-digestion.
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Affiliation(s)
- Liang Meng
- College of Engineering, Huazhong Agriculture University, 430070 Wuhan, China; Cooperative Innovation Center for Sustainable Pig Production, 430070 Wuhan, China
| | - Keda Jin
- College of Engineering, Huazhong Agriculture University, 430070 Wuhan, China
| | - Ran Yi
- Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, 610041 Chengdu, China; Risk Assessment Lab of the Quality Safety of Biomass Fermentation Products, Ministry of Agriculture, 610041 Chengdu, China
| | - Mengdi Chen
- College of Engineering, Huazhong Agriculture University, 430070 Wuhan, China
| | - Jingjing Peng
- College of Engineering, Huazhong Agriculture University, 430070 Wuhan, China
| | - Yulong Pan
- Wuhan Electronic Information Institute, Wuhan 430019, China.
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Osman MEH, Abo-Shady AM, Elshobary ME, Abd El-Ghafar MO, Abomohra AEF. Screening of seaweeds for sustainable biofuel recovery through sequential biodiesel and bioethanol production. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:32481-32493. [PMID: 32506400 DOI: 10.1007/s11356-020-09534-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 05/29/2020] [Indexed: 02/05/2023]
Abstract
The present study evaluated the sequential biodiesel-bioethanol production from seaweeds. A total of 22 macroalgal species were collected at different seasons and screened based on lipid and carbohydrate contents as well as biomass production. The promising species was selected, based on the relative increase in energy compounds (REEC, %), for further energy conversion. Seasonal and annual biomass yields of the studied species showed significant variations. The rhodophyte Amphiroa compressa and the chlorophyte Ulva intestinalis showed the highest annual biomass yield of 75.2 and 61.5 g m-2 year-1, respectively. However, the highest annual carbohydrate productivity (ACP) and annual lipid productivity (ALP) were recorded for Ulva fasciata and Ulva intestinalis (17.0 and 3.0 g m-2 year-1, respectively). The later was selected for further studies because it showed 14.8% higher REEC value than Ulva fasciata. Saturated fatty acids (SAFs) showed 73.4%, with palmitic acid as a dominant fatty acid (43.8%). Therefore, biodiesel showed high saturation degree, with average degree of unsaturation (ADU) of 0.508. All the measured biodiesel characteristics complied the international standards. The first route of biodiesel production (R1) from Ulva intestinalis showed biodiesel recovery of 32.3 mg g-1 dw. The hydrolysate obtained after saccharification of the whole biomass (R2) and lipid-free biomass (R3) contained 1.22 and 1.15 g L-1, respectively, reducing sugars. However, bioethanol yield from R3 was 0.081 g g-1 dw, which represented 14.1% higher than that of R2. Therefore, application of sequential biofuel production using R3 resulted in gross energy output of 3.44 GJ ton-1 dw, which was 170.9% and 82.0% higher than R1 and R2, respectively. The present study recommended the naturally-grown Ulva intestinalis as a potential feedstock for enhanced energy recovery through sequential biodiesel-bioethanol production.
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Affiliation(s)
- Mohamed E H Osman
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Atef M Abo-Shady
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Mostafa E Elshobary
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
- School of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Mahasen O Abd El-Ghafar
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Abd El-Fatah Abomohra
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt.
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu, 610106, China.
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25
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Sharma S, Arora A. Tracking strategic developments for conferring xylose utilization/fermentation by Saccharomyces cerevisiae. ANN MICROBIOL 2020. [DOI: 10.1186/s13213-020-01590-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Abstract
Purpose
Efficient ethanol production through lignocellulosic biomass hydrolysates could solve energy crisis as it is economically sustainable and ecofriendly. Saccharomyces cerevisiae is the work horse for lignocellulosic bioethanol production at industrial level. But its inability to ferment and utilize xylose limits the overall efficacy of the process.
Method
Data for the review was selected using different sources, such as Biofuels digest, Statista, International energy agency (IEA). Google scholar was used as a search engine to search literature for yeast metabolic engineering approaches. Keywords used were metabolic engineering of yeast for bioethanol production from lignocellulosic biomass.
Result
Through these approaches, interconnected pathways can be targeted randomly. Moreover, the improved strains genetic makeup can help us understand the mechanisms involved for this purpose.
Conclusion
This review discusses all possible approaches for metabolic engineering of yeast. These approaches may reveal unknown hidden mechanisms and construct ways for the researchers to produce novel and modified strains.
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Luo J, Li J, Zhang L, Li N, Wachemo AC, Liu C, Yuan H, Li X. Effects of different potassium and nitrogen pretreatment strategies on anaerobic digestion performance of rice straw. RSC Adv 2020; 10:25547-25556. [PMID: 35518629 PMCID: PMC9055357 DOI: 10.1039/d0ra02136a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 04/22/2020] [Indexed: 11/21/2022] Open
Abstract
The effects of different potassium and nitrogen pretreatment strategies on the anaerobic digestion (AD) performance of rice straw (RS) were investigated. KOH, NH3·H2O and KOH + NH3·H2O combined pretreatments were applied. The results showed that KOH + NH3·H2O combined pretreatment achieved the highest biomethane production and TS (TS: total solid) removal rate of 274 mL g VS−1 and 43.9%, which were 6.2–75.8% and 4.3–29.5% higher than that of single alkali pretreatments and untreated RS, respectively. The NH3·H2O groups improved the process stability, which maintained the NH3–N concentration in the range of 265–580 mg L−1. It was also found that Bacteroidetes and Firmicutes were the dominant bacterial at phyla level, and the populations of acetate methanogen (Methanosarcina and Methanosaeta) were enriched in the AD system by KOH + NH3·H2O pretreatment. Furthermore, the cost of pretreatment agents can be recovered by the increased digestate nutritional value due to the K and N remaining in the digestate after AD. The results indicated that the KOH + NH3·H2O combined pretreatment might be a promising method for efficient AD of straw in future industrial applications. The effects of different potassium and nitrogen pretreatment strategies on the anaerobic digestion (AD) performance of rice straw (RS) were investigated.![]()
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Affiliation(s)
- Juan Luo
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology 15 Beisanhuan East Road, Chaoyang District Beijing 100029 PR China
| | - Juan Li
- Beijing Municipal Environmental Monitoring Center 14 Chegongzhuang West Road, Haidian District Beijing 100048 PR China
| | - Liang Zhang
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology 15 Beisanhuan East Road, Chaoyang District Beijing 100029 PR China
| | - Nankun Li
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology 15 Beisanhuan East Road, Chaoyang District Beijing 100029 PR China .,Appraisal Center for Environment & Engineering Ministry of Environmental Protection 8 Dayangfang, Anwai Beiyuan, Chaoyang District Beijing 100012 PR China
| | - Akiber Chufo Wachemo
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology 15 Beisanhuan East Road, Chaoyang District Beijing 100029 PR China .,Department of Water Supply and Environmental Engineering, Arba Minch University P.O. Box 21 Arba Minch Ethiopia
| | - Chunmei Liu
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology 15 Beisanhuan East Road, Chaoyang District Beijing 100029 PR China
| | - Hairong Yuan
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology 15 Beisanhuan East Road, Chaoyang District Beijing 100029 PR China
| | - Xiujin Li
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology 15 Beisanhuan East Road, Chaoyang District Beijing 100029 PR China
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27
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Valorization of Wheat Byproducts for the Co-Production of Packaging Material and Enzymes. ENERGIES 2020. [DOI: 10.3390/en13061300] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Waste management systems are overloaded with huge streams of plastic, a large part of this being originated from packaging. Additionally, the production of wheat, one of the most cultivated crops in the world, generates low-value lignocellulosic materials, which are mostly discarded. In this study, the wheat lignocellulosic byproducts straw and bran were used for the co-production of enzymes and bio-based materials with possible application as packaging via the compression molding method. The mechanical properties of the films were studied based on the effects of the removal of lignin by alkali and biological pretreatment, the growth of filamentous fungi, the size of the particles, and the enzyme recovery. Generally, the straw films were stiffer than the bran ones, but the highest Young’s modulus was obtained for the biologically pretreated bran (1074 MPa). The addition of a step to recover the fungal cellulases produced during the cultivation had no statistical effect on the mechanical properties of the films. Moreover, alkali and biological pretreatments improved the anaerobic biodegradability of the straw films. Thus, the wheat bran and straw can be used for the co-production of enzymes, materials, and biogas, potentially changing how wheat and packaging wastes are managed.
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28
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Yuan H, Guan R, Wachemo AC, Zhang Y, Zuo X, Li X. Improving physicochemical characteristics and anaerobic digestion performance of rice straw via ammonia pretreatment at varying concentrations and moisture levels. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2019.07.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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29
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Lakshmikandan M, Murugesan A, Wang S, Abomohra AEF, Jovita PA, Kiruthiga S. Sustainable biomass production under CO2 conditions and effective wet microalgae lipid extraction for biodiesel production. JOURNAL OF CLEANER PRODUCTION 2020; 247:119398. [DOI: 10.1016/j.jclepro.2019.119398] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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30
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Rupani PF, Delarestaghi RM, Abbaspour M, Rupani MM, El-Mesery HS, Shao W. Current status and future perspectives of solid waste management in Iran: a critical overview of Iranian metropolitan cities. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:32777-32789. [PMID: 31520387 DOI: 10.1007/s11356-019-06456-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 09/06/2019] [Indexed: 06/10/2023]
Abstract
By growing urban population, Iran faces numerous environmental issues and solid waste management is on the top of these problems. Studies showed that a daily average of 700-1000 g of wastes are produced per person in Iran, in which organic waste accounts for a significant amount. On the other hand, hospital waste represents a part of the wastes, which need careful consideration from the environmental point of view. In the present study, the amount, composition, and management of urban and hospital wastes were evaluated in 7 Iranian metropolises, which account for about 30% of the population and produce about 35% of the country wastes. Based on prior surveys, landfill method is the current main method for waste management in these cities, which is generally not completely sanitary and therefore causes many environmental problems. The other common methods for waste management in these cities are composting of organic wastes, and the use of waste conversion methods to energy. However, the latter is ongoing only in Tehran which also includes some limitations. Therefore, the study also evaluated the future perspectives and feasibility of waste-to-energy conversion as a promising economic route for waste disposal.
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Affiliation(s)
- Parveen Fatemeh Rupani
- School of Environment and safety Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | | | - Madjid Abbaspour
- Department of mechanical Engineering, Sharif University, Tehran, Iran
| | | | - Hany S El-Mesery
- School of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, China.
- Department of Crop Handling and Processing, Agricultural Engineering Research Institute, Agricultural Research Center, Dokki, Giza, 12618, Egypt.
| | - Weilan Shao
- School of Environment and safety Engineering, Jiangsu University, Zhenjiang, Jiangsu, China.
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31
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Ai P, Zhang X, Ran Y, Meng L, Elsayed M, Fan Q, Abomohra AEF. Biomass briquetting reduces the energy loss during long-term ensiling and enhances anaerobic digestion: A case study on rice straw. BIORESOURCE TECHNOLOGY 2019; 292:121912. [PMID: 31398544 DOI: 10.1016/j.biortech.2019.121912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 07/24/2019] [Accepted: 07/25/2019] [Indexed: 06/10/2023]
Abstract
The present study evaluated the impact of briquetting prior to ensiling on rice straw characteristics and anaerobic digestion performance. Ensiling for 10 months significantly reduced cellulose, hemicellulose and lignin of the uncompressed straw by 50.3%, 61.6% and 34.6%, respectively. However, increase of briquetting ratio enhanced the cellulose and hemicellulose contents at different ensiling times. In addition, increasing of ensiling time significantly reduced the biogas yield, while the highest cumulative biogas yield of 313.8 L kg-1 VS was obtained from rice straw ensiled for 7 days at 1:6 briquetting ratio. Interestingly, the maximum biogas productivity of 1:6 briquetted straw after 10 months ensiling was 17.7% higher than that of the uncompressed straw ensiled for 7 days. Thus, briquetting prior to ensiling is a favorable approach to reduce the mass loss for enhanced biogas yield and energy recovery.
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Affiliation(s)
- Ping Ai
- College of Engineering, Huazhong Agricultural University, 430070 Wuhan, China; Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, 610041 Chengdu, China; The Cooperative Innovation Center for Sustainable Pig Production, 430070 Wuhan, China
| | - Xiuzhi Zhang
- College of Engineering, Huazhong Agricultural University, 430070 Wuhan, China
| | - Yi Ran
- Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, 610041 Chengdu, China
| | - Liang Meng
- College of Engineering, Huazhong Agricultural University, 430070 Wuhan, China; Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, 610041 Chengdu, China
| | - Mahdy Elsayed
- College of Engineering, Huazhong Agricultural University, 430070 Wuhan, China; Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt
| | - Qizhou Fan
- College of Engineering, Huazhong Agricultural University, 430070 Wuhan, China.
| | - Abd El-Fatah Abomohra
- New Energy Department, School of Energy and Power Engineering, Jiangsu University, 212013 Jiangsu, China; Botany Department, Faculty of Science, Tanta University, 31527 Tanta, Egypt
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32
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Wachemo AC, Tong H, Yuan H, Zuo X, Korai RM, Li X. Continuous dynamics in anaerobic reactor during bioconversion of rice straw: Rate of substance utilization, biomethane production and changes in microbial community structure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 687:1274-1284. [PMID: 31412461 DOI: 10.1016/j.scitotenv.2019.05.411] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 05/24/2019] [Accepted: 05/27/2019] [Indexed: 06/10/2023]
Abstract
Anaerobic digestion (AD) technology is one of the best eco-friendly waste-to-energy processes. Hence the trend of biogas production shows considerable ranges of fluctuations in entire digestion period. This study analyzes the daily substance conversion dynamics, biomethane production and changes in microbial community structure. The results show that in the first peak of biogas production during 1st up to 4th days of the digestion period, CO2 was the dominant component. However, the daily methane production (DMP) reveal accelerated increment starting from day 8 up to the peak point on day 13 (462.11 mL/d). The concentration of acetic acid covered 21.80% up to 62.00% of the total VFAs in the first 10 days of digestion period. On the other hand, the accumulation of propionic acid is in the range of 1735.70 mg/L- 2893.12 mg/L in between day 5-15, which is beyond the inhibition level (1000 mg/L) but the system didn't stop biogas production. The distribution of bacterial family such as Clostridiaceae_1, Prevotellaceae, Enterobacteriaceae and Peptostreptococcaceae are the dominant group at early stage as compared to composition in remaining stages except Enterobacteriaceae which have marginally high abundance in lowest biogas production point. The archaeal genus Methanosaeta is dominant among the samples collected at early stages (65.66%-77.22%). However, the Methanobacterium is predominant (34.88%-59.40%) in samples obtained at late stages of AD period. On the other hand, the distribution of Methanosarcina is comparable in the first three samples (S1(16.60%), S2(22.21%) and S3(20.38%)) than the stable stage (S4 (6.7%)). This study demonstrates the detailed conditions at fluctuating and constant biogas production periods, which would benefit future researchers working in similar area.
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Affiliation(s)
- Akiber Chufo Wachemo
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China; Faculty of Water Supply and Environmental Engineering, Arba Minch University, P.O. Box 21, Arba Minch, Ethiopia
| | - Huan Tong
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China
| | - Hairong Yuan
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China
| | - Xiaoyu Zuo
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China
| | - Rashid Mustafa Korai
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China; Department of Petroleum & Gas Engineering, Dawood University of Engineering & Technology, New MA Jinnah Road, Karachi 74800, Sindh, IR, Pakistan
| | - Xiujin Li
- Department of Environmental Science and Engineering, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China.
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33
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Qi X, Li Z, Akami M, Mansour A, Niu C. Fermented crop straws by Trichoderma viride and Saccharomyces cerevisiae enhanced the bioconversion rate of Musca domestica (Diptera: Muscidae). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:29388-29396. [PMID: 31399833 DOI: 10.1007/s11356-019-06101-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 07/29/2019] [Indexed: 06/10/2023]
Abstract
Crop straw is an abundant renewable resource whose usage is limited due to its high cellulose, hemicellulose, and lignin contents. Here, Trichoderma viride, Saccharomyces cerevisiae, and Musca domestica were used to transform crop straws, and we investigated their impact on housefly rearing performance and optimized their utilization. The weights of cellulose, hemicellulose, and lignin in fermented crop straw diets significantly decreased after bioconversion by M. domestica larvae. The highest bioconversion rate was recorded in corn straw diet (16.19%), followed by wheat straw diet (10.31%) and wheat bran diet (8.97%). Similarly, high larval weight (yield) and pupation rate and fecundity and fertility rate were recorded in fermented crop straw diets composed of corn straw and wheat bran in 1:1 proportions. These results indicated that fermenting crop straw with T. viride and S. cerevisiae represented an efficient strategy that enhanced crop straw bioconversion and improved the rearing capacity of the housefly larvae. The resulting larvae could further be used as proteinaceous feed in poultry and aquaculture industries. Graphical abstract.
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Affiliation(s)
- Xuewei Qi
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Zhihao Li
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Mazarin Akami
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
- Department of Biological Sciences, Faculty of Science, University of Ngaoundere, P.O Box 454, Ngaoundere, Cameroon
| | - Abdelaziz Mansour
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
- Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt
| | - Changying Niu
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China.
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34
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Enhancing Bioenergy Yields from Sequential Bioethanol and Biomethane Production by Means of Solid–Liquid Separation of the Substrates. ENERGIES 2019. [DOI: 10.3390/en12193683] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The production of second-generation ethanol using lignocellulosic feedstock is crucial in order to be able to meet the increasing fuel demands by the transportation sector. However, the technology still needs to overcome several bottlenecks before feasible commercialization can be realized. These include, for example, the development of cost-effective and environmentally friendly pretreatment strategies and valorization of the sidestream that is obtained following ethanol distillation. This work uses two chemical-free pretreatment methods—nitrogen explosive decompression (NED) and synthetic flue gas explosive decompression—to investigate the potential of a bioethanol production sidestream in terms of further anaerobic digestion. For this purpose, samples from different stages of the bioethanol production process (pretreatment, hydrolysis, and fermentation) and the bioethanol sidestream went through a separation process (involving solid–liquid separation), following which a biomethane potential (BMP) assay was carried out. The results show that both factors being studied in this article (involving the pretreatment method and the separation process) served to influence methane yields. Liquid fractions that were obtained during the process with NED gave rise to methane yields that were 8% to 12% higher than when synthetic flue gas was used; fermented and distillation sidestream gave rise to the highest methane yields (0.53 and 0.58 mol CH4/100 g respectively). The methane yields from the liquid fractions were between 60–88% lower than those that were obtained from solid fractions. Samples from the bioethanol sidestream (solid fraction) that were pretreated with NED had the highest methane yield (1.7 mol CH4/100 g). A solid–liquid separation step can be a promising strategy when it comes to improving the energy output from lignocellulosic biomass and the management of the ethanol distillation sidestream.
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Zhu Y, Zhao Z, Zhang Y. Using straw as a bio-ethanol source to promote anaerobic digestion of waste activated sludge. BIORESOURCE TECHNOLOGY 2019; 286:121388. [PMID: 31063945 DOI: 10.1016/j.biortech.2019.121388] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/24/2019] [Accepted: 04/27/2019] [Indexed: 06/09/2023]
Abstract
Commercial ethanol production from straw is a series of complex processes that are energy-intensive and uneconomical. Corn straw was used as a bioethanol source to mix with waste activated sludge for improving anaerobic co-digestion (AcoD) in this study. Ethanol production from the straw after yeast fermentation was 1400-2200 mg COD/L, accounting for about 0.1% of the fermentative effluent, but methane production of the yeast-group increased by 36% compared to that of control-group with no ethanol production in advance. Volatile suspended solid removal achieved 60%, obviously higher than common anaerobic digestion (AD). Multiple lines of evidence including sludge conductance, effects of activated carbon on methanogenesis and microbial community demonstrated that ethanol from the straw fermentation stimulated direct interspecies electron transfer to be established in the digesters. The results suggested that using ethanol produced from straw was a cost-effective novel way for energy recovery from disposal of agricultural and municipal wastes.
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Affiliation(s)
- Yahui Zhu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zhiqiang Zhao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yaobin Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
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36
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Evaluation of Infrared Radiation Combined with Hot Air Convection for Energy-Efficient Drying of Biomass. ENERGIES 2019. [DOI: 10.3390/en12142818] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Cost-effective biomass drying is a key challenge for energy recovery from biomass by direct combustion, gasification, and pyrolysis. The aim of the present study was to optimize the process of biomass drying using hot air convection (HA), infrared (IR), and combined drying systems (IR-HA). The specific energy consumption (SEC) decreased significantly by increasing the drying temperature using convective drying, but higher air velocities increased the SEC. Similarly, increasing air velocity in the infrared dryer resulted in a significant increase in SEC. The lowest SEC was recorded at 7.8 MJ/kg at an air velocity of 0.5 m/s and an IR intensity of 0.30 W/cm2, while a maximum SEC (20.7 MJ/kg) was observed at 1.0 m/s and 0.15 W/cm2. However, a significant reduction in the SEC was noticed in the combined drying system. A minimum SEC of 3.8 MJ/kg was recorded using the combined infrared-hot air convection (IR-HA) drying system, which was 91.7% and 51.7% lower than convective and IR dryers, respectively. The present study suggested a combination of IR and hot air convection at 60 °C, 0.3 W/cm2 and 0.5 m/s as optimum conditions for efficient drying of biomass with a high water content.
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37
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Ai P, Zhang X, Dinamarca C, Elsayed M, Yu L, Xi J, Mei Z. Different effects of ozone and aqueous ammonia in a combined pretreatment method on rice straw and dairy manure fiber for enhancing biomethane production. BIORESOURCE TECHNOLOGY 2019; 282:275-284. [PMID: 30875595 DOI: 10.1016/j.biortech.2019.03.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/04/2019] [Accepted: 03/05/2019] [Indexed: 06/09/2023]
Abstract
Low digestibility of lignocellulosic feedstock is the most important limitation for biogas production. The synergistic effects of ozone and aqueous ammonia (OSAA) on different types of lignocelluloses including rice straw and dairy manure fiber were investigated. OSAA significantly increased biogas production of rice straw by 114.2%-172.8% when compared with using ozonation alone, while increased by 6.2%-8.8% with manure fiber. OSAA pretreatment increased biogas production of manure fiber by 55.3%-103.6% when compared with soaking aqueous ammonia (SAA) alone, while by 28.8%-39.9% with rice straw. The specific effects of pretreatment time on anaerobic digestion of manure fiber differed noticeably from those on rice straw. Ozonation time had a major function for pretreatment of manure fiber via the OSAA process, but SAA pretreatment time was more important than that for rice straw.
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Affiliation(s)
- Ping Ai
- College of Engineering, Huazhong Agricultural University, Wuhan 430070, China; The Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
| | - Xiuzhi Zhang
- College of Engineering, Huazhong Agricultural University, Wuhan 430070, China; The Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
| | - Carlos Dinamarca
- University College of Southeast Norway, Kjølnes Ring 56, Porsgrunn 3918, Norway
| | - Mahdy Elsayed
- College of Engineering, Huazhong Agricultural University, Wuhan 430070, China; The Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
| | - Liang Yu
- Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164, USA
| | - Jiang Xi
- Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Chengdu 610041, China
| | - Zili Mei
- Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Chengdu 610041, China.
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