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Kee PE, Phang SM, Lan JCW, Tan JS, Khoo KS, Chang JS, Ng HS. Tropical Seaweeds as a Sustainable Resource Towards Circular Bioeconomy: Insights and Way Forward. Mol Biotechnol 2023:10.1007/s12033-023-00940-7. [PMID: 37938536 DOI: 10.1007/s12033-023-00940-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 09/21/2023] [Indexed: 11/09/2023]
Abstract
Seaweeds are photosynthetic marine macroalgae known for their rapid biomass growth and their significant contributions to global food and feed production. Seaweeds play a crucial role in mitigating various environmental issues, including greenhouse gases, ocean acidification, hypoxia, and eutrophication. Tropical seaweeds are typically found in tropical and subtropical coastal zones with warmer water temperatures and abundant sunlight. These tropical seaweeds are rich sources of proteins, vitamins, minerals, fibers, polysaccharides, and bioactive compounds, contributing to their health-promoting properties and their diverse applications across a range of industries. The productivity, cultivability, nutritional quality, and edibility of tropical seaweeds have been well-documented. This review article begins with an introduction to the growth conditions of selected tropical seaweeds. Subsequently, the multifunctional properties of tropical seaweeds including antioxidant and anti-inflammatory, anti-coagulant, anti-carcinogenic and anti-proliferative, anti-viral, therapeutic and preventive properties were comprehensively evaluated. The potential application of tropical seaweeds as functional foods and feeds, as well as their contributions to sustainable cosmetics, bioenergy, and biofertilizer production were also highlighted. This review serves as a valuable resource for researchers involved in seaweed farming as it provides current knowledge and insights into the cultivation and utilization of seaweeds.
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Affiliation(s)
- Phei Er Kee
- Centre for Research and Graduate Studies, University of Cyberjaya, Persiaran Bestari, 63000, Cyberjaya, Selangor, Malaysia
| | - Siew Moi Phang
- Faculty of Applied Sciences, UCSI University, UCSI Heights, Cheras, 56000, Kuala Lumpur, Malaysia
- Institute Ocean and Earth Sciences, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - John Chi-Wei Lan
- Biorefinery and Bioprocess Engineering Laboratory, Department of Chemical Engineering and Materials Science, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li, Taoyuan, 32003, Taiwan.
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Chungli, Taoyuan, 320, Taiwan.
| | - Joo Shun Tan
- School of Industrial Technology, Universiti Sains Malaysia, 11800, Gelugor, Pulau Pinang, Malaysia
| | - Kuan Shiong Khoo
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Chungli, Taoyuan, 320, Taiwan
| | - Jo-Shu Chang
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Hui-Suan Ng
- Centre for Research and Graduate Studies, University of Cyberjaya, Persiaran Bestari, 63000, Cyberjaya, Selangor, Malaysia.
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Catarino MD, Pires SMG, Silva S, Costa F, Braga SS, Pinto DCGA, Silva AMS, Cardoso SM. Overview of Phlorotannins' Constituents in Fucales. Mar Drugs 2022; 20:754. [PMID: 36547901 PMCID: PMC9786115 DOI: 10.3390/md20120754] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 12/03/2022] Open
Abstract
Fucales are an order within the Phaeophyceae that include most of the common littoral seaweeds in temperate and subtropical coastal regions. Many species of this order have long been a part of human culture with applications as food, feedand remedies in folk medicine. Apart from their high nutritional value, these seaweeds are also a well-known reservoir of multiple bioactive compounds with great industrial interest. Among them, phlorotannins, a unique and diverse class of brown algae-exclusive phenolics, have gathered much attention during the last few years due to their numerous potential health benefits. However, due to their complex structural features, combined with the scarcity of standards, it poses a great challenge to the identification and characterization of these compounds, at least with the technology currently available. Nevertheless, much effort has been taken towards the elucidation of the structural features of phlorotannins, which have resulted in relevant insights into the chemistry of these compounds. In this context, this review addresses the major contributions and technological advances in the field of phlorotannins extraction and characterization, with a particular focus on Fucales.
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Affiliation(s)
- Marcelo D Catarino
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Sónia M G Pires
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Sónia Silva
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Filipa Costa
- School of Engineering, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal
| | - Susana S Braga
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Diana C G A Pinto
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Artur M S Silva
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Susana M Cardoso
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
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Chikani-Cabrera KD, Fernandes PMB, Tapia-Tussell R, Parra-Ortiz DL, Hernández-Zárate G, Valdez-Ojeda R, Alzate-Gaviria L. Improvement in Methane Production from Pelagic Sargassum Using Combined Pretreatments. Life (Basel) 2022; 12:1214. [PMID: 36013393 PMCID: PMC9409870 DOI: 10.3390/life12081214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/28/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023] Open
Abstract
The constant golden tides of Sargassum spp., identified to be a mixture of Sargassum natans and Sargassum fluitans, observed recently in the Mexican Caribbean have affected the marine ecosystem and the local economy and have created the need for solutions for their management and use. The Sargassum arrivals have thus been considered as third-generation feedstock for biofuel. Their potential for energetic conversion to biomethane was investigated, with hydrolysis as the limiting step due to its complex composition; therefore, in the present study, different physical, chemical, and enzymatic pretreatments and a combination of them have been evaluated, with the additional use of granular activated carbon, to determine the best yield and methane quality. The combined pretreatments of 2.5% hydrogen peroxide, followed by an enzymatic pretreatment (enzymatic extract from Trametes hirsuta isolated from decomposing wood in the Yucatán Peninsula-Mexico), was the best option, reaching a biodegradability of 95% and maximum methane yield of 387 ± 3.09 L CH4/kg volatile solid. The use of a conductive material, such as granular activated carbon, did not generate significant changes in performance and methane concentration.
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Affiliation(s)
- Karla Daniela Chikani-Cabrera
- Renewable Energy Unit, Yucatan Center for Scientific Research, Carretera Sierra Papacal-Chuburná Puerto, Km 5, Sierra Papacal, Mérida 97302, Mexico
| | | | - Raúl Tapia-Tussell
- Renewable Energy Unit, Yucatan Center for Scientific Research, Carretera Sierra Papacal-Chuburná Puerto, Km 5, Sierra Papacal, Mérida 97302, Mexico
| | - David Leonardo Parra-Ortiz
- Center for Biotechnology, Federal University of Espírito Santo—UFES, Campus Maruípe, Vitória 29043900, Espírito Santo, Brazil
| | - Galdy Hernández-Zárate
- Colegio de Postgraduados, Campus Veracruz, Posgrado en Agroecosistemas Tropicales, Mpio. Manlio Fabio Altamirano, Veracruz 91700, Mexico
| | - Ruby Valdez-Ojeda
- Renewable Energy Unit, Yucatan Center for Scientific Research, Carretera Sierra Papacal-Chuburná Puerto, Km 5, Sierra Papacal, Mérida 97302, Mexico
| | - Liliana Alzate-Gaviria
- Renewable Energy Unit, Yucatan Center for Scientific Research, Carretera Sierra Papacal-Chuburná Puerto, Km 5, Sierra Papacal, Mérida 97302, Mexico
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Bonon AJ, Bahú JO, Klein BC, Mandelli D, Filho RM. Green production of limonene diepoxide for potential biomedical applications. Catal Today 2022. [DOI: 10.1016/j.cattod.2020.06.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Thompson TM, Young BR, Baroutian S. Enhancing biogas production from caribbean pelagic Sargassum utilising hydrothermal pretreatment and anaerobic co-digestion with food waste. CHEMOSPHERE 2021; 275:130035. [PMID: 33640741 DOI: 10.1016/j.chemosphere.2021.130035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 02/10/2021] [Accepted: 02/14/2021] [Indexed: 05/18/2023]
Abstract
The recurring inundation of beaches in the tropical North Atlantic by pelagic Sargassum and the associated social, ecological and economic challenges, have aroused great interest in its potential use as a marine energy crop. However, to date, the seasonal availability and low experimental methane potential of these invasive brown seaweeds have hindered their commercial exploitation as feedstock for sustainable energy production. This novel study evaluated Caribbean pelagic Sargassum and the synergistic interactions of hydrothermal pretreatment and co-digestion with food waste at different mixture ratios, on biogas production enhancement and bio-fertiliser recovery. Batch testing revealed that hydrothermal pretreatment promoted the hydrolysis of organics in pelagic Sargassum and food waste, thus increasing methane recovery from mono-substrate digestion by 212.57% and 10.16%, respectively, in comparison to the untreated samples. Co-digestion of pelagic Sargassum and food waste redistributed metal elements and raised the buffering capacity of the digester, facilitating high organic loadings without pH control. Food waste also provided lipids to the seaweed feed which augmented the digestion performance. The maximum cumulative methane yield of 292.18 ± 8.70 mL/gVS was obtained from a blend of co-pretreated pelagic Sargassum and food waste at the weight ratio 25:75. Screening of the whole digestate from co-digestion indicated bio-fertiliser potential. However, the solid fraction necessitates arsenic remediation to meet international soil standard guidelines. The findings of this study are promising and suggest opportunity for the design, scale up and optimisation of biogas systems, equipped with hydrothermal pretreatment for utilisation of Sargassum seaweeds during influx.
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Affiliation(s)
- Terrell M Thompson
- Department of Chemical and Materials Engineering, The University of Auckland, Auckland, 1010, New Zealand
| | - Brent R Young
- Department of Chemical and Materials Engineering, The University of Auckland, Auckland, 1010, New Zealand
| | - Saeid Baroutian
- Department of Chemical and Materials Engineering, The University of Auckland, Auckland, 1010, New Zealand.
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A Prospective Study of the Exploitation of Pelagic Sargassum spp. as a Solid Biofuel Energy Source. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10238706] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This study presents a prospective study for the potential exploitation of pelagic Sargassum spp. as a solid biofuel energy source. It was carried out in three stages. First we conducted a morphological, physical-chemical, and structural characterization using scanning electron microscopy (SEM), infrared spectroscopy (FTIR), and X-ray diffraction (DRX), respectively. Second we evaluated the material’s functional properties as a solid biofuel based on its calorific value and the quantification of polymeric components like hemicellulose, cellulose, and lignin, as well as thermogravimetric and differential analysis to study the kinetics of its pyrolysis and determine parameters like activation energy (Ea), reaction order (n), and the pre-exponential factor (Z). Third we analyzed the energetic potential considering the estimated volume of pelagic Sargassum spp. that was removed from beaches along the Mexican Caribbean coast in recent years. Results of the kinetic study indicate that Sargassum spp. has an enormous potential for use as a complement to other bioenergy sources. Other results show the high potential for exploiting these algae as an energy source due to the huge volumes that have inundated Caribbean, West African, and northern Brazil shorelines in recent years. As a solid biofuel, Sargassum spp. has a potential energy the order of 0.203 gigajoules (GJ)/m3. In the energy matrix of the residential sector in Mexico, its potential use as an energy source is comparable to the national consumption of firewood. The volume of beachcast Sargassum spp. that was removed from ~8 km of coastline around Puerto Morelos, Mexico in 2018–2019, could have generated over 40 terajoules/year of solid biofuel.
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de Sousa e Silva A, Sales Morais NW, Maciel Holanda Coelho M, Lopes Pereira E, Bezerra dos Santos A. Potentialities of biotechnological recovery of methane, hydrogen and carboxylic acids from agro-industrial wastewaters. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.biteb.2020.100406] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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da Silva FAGS, Oliveira JV, Felgueiras C, Dourado F, Gama M, Alves MM. Study and valorisation of wastewaters generated in the production of bacterial nanocellulose. Biodegradation 2020; 31:47-56. [PMID: 32193751 DOI: 10.1007/s10532-020-09893-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 03/05/2020] [Indexed: 11/30/2022]
Abstract
Two culture media were tested for the production of bacterial nanocellulose (BNC) under static culture fermentation, one containing molasses (Mol-HS), the other molasses and corn steep liquor (Mol-CSL), as a source of carbon and nitrogen, respectively. These are low-cost nutrients widely available, which provide very good BNC productivities. However, the use of these substrates generates wastewaters with high organic loads. Anaerobic digestion is one of the most promising treatments for industrial wastewaters with high organic loads since, beyond removal of the organic matter, it generates energy, in form of biogas. The wastewaters from BNC fermentation were thus evaluated for their biochemical methane potential through anaerobic digestion. For this, two wastewaters streams were collected: (i) the culture medium obtained after fermentation (WaF) and (ii) the WaF combined with BNC washing wastewaters (WaW). These two effluents-WaF and WaW-were characterized regarding their chemical oxygen demand, total nitrogen, total and volatile solids, to assess their suitability for anaerobic digestion. The biochemical methane potential of WaF and WaW from Mol-CSL wastewaters was (387 ± 14 L kg-1 VS) and (354 ± 4 L kg-1 VS), corresponding to a methanization percentage of (86.9 ± 3.1) % and (79.5 ± 0.9) %, respectively. After treatment, the chemical oxygen demand of WaF and WaW was reduced by (89.2 ± 0.4) and (88.7 ± 1.5), respectively. An exploratory test using an Upflow Anaerobic Sludge Blanket reactor for WaW treatment was also performed. The reactor was operated with a organic loading rate of [(6.5 ± 0.1) g L-1 d-1] and hydraulic retention time of 3.33 days, allowing a chemical oxygen demand removal of 58% of WaW. Results here obtained demonstrate, for the first time, the high potential of AD for the valorisation of the BNC fermentation wastewaters.
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Affiliation(s)
| | - João V Oliveira
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Catarina Felgueiras
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Fernando Dourado
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.
| | - Miguel Gama
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - M Madalena Alves
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
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Zhang Y, Caldwell GS, Blythe PT, Zealand AM, Li S, Edwards S, Xing J, Goodman P, Whitworth P, Sallis PJ. Co-digestion of microalgae with potato processing waste and glycerol: effect of glycerol addition on methane production and the microbial community. RSC Adv 2020; 10:37391-37408. [PMID: 35521230 PMCID: PMC9057114 DOI: 10.1039/d0ra07840a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Accepted: 09/28/2020] [Indexed: 11/25/2022] Open
Abstract
The production of methane-rich biogas from the anaerobic digestion (AD) of microalgae is limited by an unfavorable biomass carbon-to-nitrogen (C/N) ratio; however, this may be ameliorated using a co-digestion strategy with carbon-rich feedstocks. For reliable plant operation, and to improve the economics of the process, secure co-feedstock supply (ideally as a waste-stream) is important. To this end, this study investigated the feasibility of co-digesting microalgae (Chlorella vulgaris) with potato processing waste (potato discarded parts, PPWdp; potato peel, PPWp) and glycerol, while monitoring the response of the methanogenic community. In this semi-continuous study, glycerol (1 and 2% v/v) added to mixtures of C. vulgaris : PPWdp enhanced the specific methane yields the most, by 53–128%, whilst co-digestion with mixtures of C. vulgaris : PPWp enhanced the methane yields by 62–74%. The microbial communities diverged markedly over operational time, and to a lesser extent in response to glycerol addition. The acetoclast Methanosaeta was abundant in all treatments but was replaced by Methanosarcina in the potato peel with glycerol treatment due to volatile fatty acid (VFA) accumulation. Our findings demonstrate that the performance of microalgae co-digestion is substantially improved by the addition of glycerol as an additional co-feedstock. This should improve the economic case for anaerobically digesting microalgae as part of wastewater treatment processes and/or the terminal step of a microalgae biorefinery. Glycerol as an additional co-substrate enhanced methane yields by up to 128% when co-digestion with microalgae and potato waste.![]()
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Affiliation(s)
- Yanghanzi Zhang
- School of Engineering
- Newcastle University
- Newcastle upon Tyne
- UK
| | - Gary S. Caldwell
- School of Natural and Environmental Sciences
- Newcastle University
- Newcastle upon Tyne
- UK
| | | | - Andrew M. Zealand
- Department of Applied Sciences
- Faculty of Health and Life Sciences
- Northumbria University
- Newcastle upon Tyne NE1 8ST
- UK
| | - Shuo Li
- School of Engineering
- Newcastle University
- Newcastle upon Tyne
- UK
| | - Simon Edwards
- School of Engineering
- Newcastle University
- Newcastle upon Tyne
- UK
| | - Jin Xing
- School of Engineering
- Newcastle University
- Newcastle upon Tyne
- UK
| | - Paul Goodman
- School of Engineering
- Newcastle University
- Newcastle upon Tyne
- UK
| | - Paul Whitworth
- School of Natural and Environmental Sciences
- Newcastle University
- Newcastle upon Tyne
- UK
| | - Paul J. Sallis
- School of Engineering
- Newcastle University
- Newcastle upon Tyne
- UK
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Bichot A, Lerosty M, Geirnaert L, Méchin V, Carrère H, Bernet N, Delgenès JP, García-Bernet D. Soft Microwave Pretreatment to Extract P-Hydroxycinnamic Acids from Grass Stalks. Molecules 2019; 24:E3885. [PMID: 31661930 PMCID: PMC6864740 DOI: 10.3390/molecules24213885] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/22/2019] [Accepted: 10/25/2019] [Indexed: 12/02/2022] Open
Abstract
The aim of this article is to provide an analysis of microwave effects on ferulic and coumaric acids (FA and CA, respectively) extraction from grass biomass (corn stalks and miscanthus). Microwave pretreatment using various solvents was first compared to conventional heating on corn stalks. Then, microwave operational conditions were extended in terms of incident power and treatment duration. Optimal conditions were chosen to increase p-hydroxycinnamic acids release. Finally, these optimal conditions determined on corn stalks were tested on miscanthus stalks to underlie the substrate incidence on p-hydroxycinnamic acids release yields. The optimal conditions-a treatment duration of 405 s under 1000 W-allowed extracting 1.38% FA and 1.97% CA in corn stalks and 0.58% FA and 3.89% CA in miscanthus stalks. The different bioaccessibility of these two molecules can explain the higher or lower yields between corn and miscanthus stalks.
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Affiliation(s)
- Aurélie Bichot
- Univ Montpellier, INRA, 102 Avenue des Etangs, CEDEX, 11100 Narbonne, France.
| | - Mickaël Lerosty
- Univ Montpellier, INRA, 102 Avenue des Etangs, CEDEX, 11100 Narbonne, France.
| | - Laureline Geirnaert
- Univ Montpellier, INRA, 102 Avenue des Etangs, CEDEX, 11100 Narbonne, France.
| | - Valérie Méchin
- INRA Institut Jean-Pierre Bourgin, CEDEX, 78026 Versailles, France.
| | - Hélène Carrère
- Univ Montpellier, INRA, 102 Avenue des Etangs, CEDEX, 11100 Narbonne, France.
| | - Nicolas Bernet
- Univ Montpellier, INRA, 102 Avenue des Etangs, CEDEX, 11100 Narbonne, France.
| | | | - Diana García-Bernet
- Univ Montpellier, INRA, 102 Avenue des Etangs, CEDEX, 11100 Narbonne, France.
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Abstract
The potential of algal biomass as a source of liquid and gaseous biofuels has been the subject of considerable research over the past few decades, with researchers strongly agreeing that algae have the potential of becoming a viable aquatic energy crop with a higher energy potential compared to that from either terrestrial biomass or municipal solid waste. However, neither microalgae nor seaweed are currently cultivated solely for energy purposes due to the high costs of harvesting, concentrating and drying. Anaerobic digestion of algal biomass could theoretically reduce costs associated with drying wet biomass before processing, but practical yields of biogas from digestion of many algae are substantially below the theoretical maximum. New processing methods are needed to reduce costs and increase the net energy balance. This review examines the biochemical and structural properties of seaweeds and of microalgal biomass that has been produced as part of the treatment of wastewater, and discusses some of the significant hurdles and recent initiatives for producing biogas from their anaerobic digestion.
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Lime Pretreatment of Miscanthus: Impact on BMP and Batch Dry Co-Digestion with Cattle Manure. Molecules 2018; 23:molecules23071608. [PMID: 30004441 PMCID: PMC6099789 DOI: 10.3390/molecules23071608] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 06/27/2018] [Accepted: 06/28/2018] [Indexed: 12/02/2022] Open
Abstract
In Europe, the agricultural biogas sector is currently undergoing fast developments, and cattle manure constitutes an important feedstock. Batch dry digester processes with leachate recirculation prove to be particularly interesting for small-scale plants. However, their startup being relatively slow, the process could be facilitated by co-digestion with energy crops. In this study, Miscanthus xgiganteus was chosen for its high biomass yields and low input requirements. The carbohydrate accessibility of this lignocellulosic biomass is limited but may be improved with alkali pretreatment. The efficiency of lime (CaO) pretreatment with low water addition on the biochemical methane potential (BMP) of miscanthus was investigated through two experimental designs (CaO concentrations ranged between 2.5 and 17.5% and pretreatment lasted 1, 3, or 5 days). The pretreated miscanthus was then co-digested with cattle manure in dry leach bed reactors. CaO pretreatments led to a 14–37% improvement of miscanthus BMP, and a 67–227% increase in the first-order kinetics constant; a high contact time was shown to favor methane production. According to these results and to industrial requirements, miscanthus was pretreated with 5 and 10% CaO for 5 days, then co-digested with manure in dry leach bed reactors. Nevertheless, the promising results of the BMP tests were not validated. This could be related to the high water absorption capacity of miscanthus.
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Biological Pretreatment of Mexican Caribbean Macroalgae Consortiums Using Bm-2 Strain (Trametes hirsuta) and Its Enzymatic Broth to Improve Biomethane Potential. ENERGIES 2018. [DOI: 10.3390/en11030494] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Chen J, Yan S, Zhang X, Tyagi RD, Surampalli RY, Valéro JR. Chemical and biological conversion of crude glycerol derived from waste cooking oil to biodiesel. WASTE MANAGEMENT (NEW YORK, N.Y.) 2018; 71:164-175. [PMID: 29097125 DOI: 10.1016/j.wasman.2017.10.044] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 10/24/2017] [Accepted: 10/25/2017] [Indexed: 06/07/2023]
Abstract
In this study, crude, purified, and pure glycerol were used to cultivate Trichosporon oleaginosus for lipid production which was then used as feedstock of biodiesel production. The purified glycerol was obtained from crude glycerol by removing soap with addition of H3PO4 which converted soap to free fatty acids and then separated from the solution. The results showed that purified glycerol provided similar performance as pure glycerol in lipid accumulation; however, crude glycerol as carbon source had negatively impacted the lipid production of T. oleaginosus. Purified glycerol was later used to determine the optimal glycerol concentration for lipid production. The highest lipid yield 0.19g/g glycerol was obtained at 50g/L purified glycerol in which the biomass concentration and lipid content were 10.75g/L and 47% w/w, respectively. An energy gain of 4150.51MJ could be obtained with 1tonne of the crude glycerol employed for biodiesel production through the process proposed in this study. The biodiesel production cost estimated was 6.32US$/gal. Fatty acid profiles revealed that C16:0 and C18:1 were the major compounds of the biodiesel from the lipid produced by T. oleaginosus cultivated with crude and purified glycerol. The study found that purified glycerol was promising carbon source for biodiesel production.
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Affiliation(s)
- Jiaxin Chen
- School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, Guangdong 518055, PR China; INRS Eau, Terre et Environnement, 490, rue de la Couronne, Québec G1K 9A9, Canada
| | - Song Yan
- INRS Eau, Terre et Environnement, 490, rue de la Couronne, Québec G1K 9A9, Canada
| | - Xiaolei Zhang
- School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, Guangdong 518055, PR China.
| | | | - Rao Y Surampalli
- Department of Civil Engineering, University of Nebraska-Lincoln, N104 SEC, PO Box 886105, Lincoln, NE 68588-6105, USA
| | - J R Valéro
- INRS Eau, Terre et Environnement, 490, rue de la Couronne, Québec G1K 9A9, Canada
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HOANG TC, FOTEDAR R, O’LEARY M. Effect of nutrient media and initial biomass on growth rate and nutrient uptake of Sargassum spinuligerum (Sargassaceae, Phaeophyta). Turk J Biol 2017. [DOI: 10.3906/biy-1703-49] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Golden Tides: Problem or Golden Opportunity? The Valorisation of Sargassum from Beach Inundations. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2016. [DOI: 10.3390/jmse4030060] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Kalia VC, Prakash J, Koul S. Biorefinery for Glycerol Rich Biodiesel Industry Waste. Indian J Microbiol 2016; 56:113-25. [PMID: 27570302 DOI: 10.1007/s12088-016-0583-7] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 04/12/2016] [Indexed: 11/30/2022] Open
Abstract
The biodiesel industry has the potential to meet the fuel requirements in the future. A few inherent lacunae of this bioprocess are the effluent, which is 10 % of the actual product, and the fact that it is 85 % glycerol along with a few impurities. Biological treatments of wastes have been known as a dependable and economical direction of overseeing them and bring some value added products as well. A novel eco-biotechnological strategy employs metabolically diverse bacteria, which ensures higher reproducibility and economics. In this article, we have opined, which organisms and what bioproducts should be the focus, while exploiting glycerol as feed.
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Affiliation(s)
- Vipin Chandra Kalia
- Microbial Biotechnology and Genomics, CSIR - Institute of Genomics and Integrative Biology (IGIB), Delhi University Campus, Mall Road, Delhi, 110007 India ; Academy for Scientific and Innovative Research (AcSIR), 2 Rafi Marg, New Delhi, 110001 India
| | - Jyotsana Prakash
- Microbial Biotechnology and Genomics, CSIR - Institute of Genomics and Integrative Biology (IGIB), Delhi University Campus, Mall Road, Delhi, 110007 India ; Academy for Scientific and Innovative Research (AcSIR), 2 Rafi Marg, New Delhi, 110001 India
| | - Shikha Koul
- Microbial Biotechnology and Genomics, CSIR - Institute of Genomics and Integrative Biology (IGIB), Delhi University Campus, Mall Road, Delhi, 110007 India ; Academy for Scientific and Innovative Research (AcSIR), 2 Rafi Marg, New Delhi, 110001 India
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