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Dissertation
Etude de l'effet de divers coformulants sur les caractéristiques physico-chimiques et la sélectivité d'un bioherbicide à base d'huile essentielle
Authors: --- --- --- --- --- et al.
Year: 2022 Publisher: Liège Université de Liège (ULiège)

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Les adventices sont sources de compétition et de nuisances visuelles dans les jardins. Actuellement, les méthodes de lutte sont principalement manuelles et donc, énergivores et chronophages. Afin de faciliter le contrôle des adventices en jardin, un bioherbicide sélectif pourrait être développé. &#13;Différentes études ont démontré les propriétés pesticides des huiles essentielles. Celles-ci sont d'origine naturelle et biodégradables, ce qui en fait de bonnes candidates pour être utilisées comme substances actives dans de nouveaux bioherbicides. Ces substances actives peuvent être mélangées à d'autres substances, appelées coformulants, qui visent à augmenter l'efficacité du produit final. Les huiles végétales modifiées (HVM) sont aussi biodégradables, d'origine biologique et sont connues pour augmenter la mouillabilité des formulations ainsi que leur pénétration.&#13;Différentes sources d'HVM ont été utilisées ainsi que leurs esters méthyliques d'acides gras (EMAG) constitutifs. La sélectivité et la phytotoxicité des formulations ont été mesurées au cours d'essais en serre et les propriétés physico-chimiques ont été évaluées au cours de divers tests, notamment l'analyse de la mouillabilité, de la pénétration et de la granulométrie. &#13;Les résultats indiquent que les formulations à base d'EMAG ont considérablement réduit la taille médiane des gouttes dispersées. Cependant, la pénétration n'a pas été améliorée par l'ajout d'EMAG et la sélectivité n'a pas été augmentée. Certains EMAG ont montré une phytotoxicité sur L. perenne et T. repens. Les différentes analyses ont également démontré l'importance de la composition en esters méthyliques d'acides gras des huiles végétales modifiées. Weeds are a source of competition and visual nuisance in gardens. Currently, weed control methods are mainly manual and therefore energy- and time-consuming. In order to facilitate weed control in the garden, a selective bioherbicide could be developed. &#13;Various studies have demonstrated the pesticidal properties of essential oils. These are of natural origin and biodegradable, making them good candidates for use as active ingredients in new biological herbicides. These active ingredients can be mixed with other substances, called coformulants. These aim to increase the effectiveness of the final product. Modified seed oils (MSO) are also biodegradable, of biological origin and are known to increase the wettability of formulations as well as their penetration.&#13;Different sources of MSO were used as well as their constituent fatty acid methyl esters (FAME). The selectivity and phytotoxicity of the formulations were assessed during greenhouse trials and the physicochemical properties were evaluated during various tests including particle size analysis, wettability and penetration. &#13;Results indicate that FAME-based formulations had significantly decreased the median size of the dispersed drops. However, overall penetration was not improved by the addition of FAME and selectivity wasn't increased. Some FAME showed phytotoxicity on L. perenne and T. repens. The different analyses also demonstrated the importance of the fatty acid methyl ester composition of the modified seed oils.


Book
Biomass Processing for Biofuels, Bioenergy and Chemicals
Authors: --- ---
ISBN: 3039289101 3039289098 Year: 2020 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Biomass can be used to produce renewable electricity, thermal energy, transportation fuels (biofuels), and high-value functional chemicals. As an energy source, biomass can be used either directly via combustion to produce heat or indirectly after it is converted to one of many forms of bioenergy and biofuel via thermochemical or biochemical pathways. The conversion of biomass can be achieved using various advanced methods, which are broadly classified into thermochemical conversion, biochemical conversion, electrochemical conversion, and so on. Advanced development technologies and processes are able to convert biomass into alternative energy sources in solid (e.g., charcoal, biochar, and RDF), liquid (biodiesel, algae biofuel, bioethanol, and pyrolysis and liquefaction bio-oils), and gaseous (e.g., biogas, syngas, and biohydrogen) forms. Because of the merits of biomass energy for environmental sustainability, biofuel and bioenergy technologies play a crucial role in renewable energy development and the replacement of chemicals by highly functional biomass. This book provides a comprehensive overview and in-depth technical research addressing recent progress in biomass conversion processes. It also covers studies on advanced techniques and methods for bioenergy and biofuel production.

Keywords

oxidation stability --- power density --- lipids --- pre-treatment --- dark fermentation --- hydrodeoxygenation --- combustion characteristics --- hydrogen --- feed solution --- emission --- cow manure --- anaerobic digestion --- synergistic effect --- biodiesel --- thermophilic --- mesophilic --- antioxidant --- crude oil --- biofuel --- rice husk --- base-catalyzed transesterification --- enzymatic digestibility --- fatty acid methyl ester --- coffee mucilage --- osmotic membrane --- fermentation --- forward osmosis --- Fourier transform infrared spectroscopy --- lignocellulose --- dimethyl carbonate --- diesel --- triacylglycerides --- drop-in fuel --- draw solution --- subcritical methanol --- free fatty acids --- Rhus typhina biodiesel --- sewage sludge --- alternative fuel --- vacuum --- intake temperature --- Physico-chemical properties --- bioethanol --- energy yield --- tert-butylhydroquinone --- non-edible oil --- biomass --- nano-catalysts --- Fatty Acid Methyl Ester --- bioenergy --- direct carbon fuel cell --- viscosity --- FAME yield --- reaction kinetics --- gasification --- operating conditions --- injection strategies --- instar --- butylated hydroxyanisole --- torrefaction --- nanomagnetic catalyst --- fatty acid methyl esters --- crude glycerol --- renewable energy --- pyrolysis --- glycerol carbonate --- single-pellet combustion --- biodiesel production --- nanotechnology --- microwave irradiation --- pressure-retarded osmosis --- black soldier fly larvae (BSFL) --- technology development --- concentration polarization --- waste --- nano-additives --- bio-jet fuel --- kinetic study --- thermogravimetric analysis --- rubber seed oil --- combustion --- potato peels --- power generation --- response surface --- biochar --- lipid --- organic wastes --- extrusion --- co-combustion --- biomass pretreatment --- microwave --- hardwood --- Rancimat method --- anaerobic treatment --- post-treatment --- fatty acid methyl ester (FAME) --- biogas --- GCI --- compression ratio --- membrane fouling --- environment --- rice straw --- pretreatment --- free fatty acid --- palm oil mill effluent --- acclimatization --- Box-Behnken design


Book
Biomass Derived Heterogeneous and Homogeneous Catalysts
Authors: ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

In this book, the performance of homogeneous and heterogeneous catalysts applied in biomass processing was assessed, paying special attention to the main advantages and challenges related to their use. Indeed, these challenges are opportunities to develop new research lines that could be fruitful in the near future. Thus, different studies are included, dealing with diverse subjects, with one main goal in common: the improvement of different aspects related to biomass processing through the use of catalysts.


Book
Biotechnology for Sustainability and Social Well Being
Authors: --- ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

This book covers the latest development of bioprocess technology including theoretical, numerical, and experimental approaches in biotechnology as well as green technology that bridge conventional practices and Industry 4.0. Bioprocessing is one of the key factors in several emerging industries of biofuels, used in the production of biogas, bioethanol, and biodiesel; industrial enzymes; waste management through biotechnology; new vaccines; and many more. It is hoped that the novel bioprocess and green biotechnologies presented in this book are useful in assisting the global community in working towards fulfilling the Sustainable Development Goals (SDG) of the United Nations.

Keywords

Technology: general issues --- extraction --- leaf --- liquid biphasic flotation --- polygonum --- protein --- date fruits --- proximate analysis --- physico-chemical characteristics --- date sugar --- phytoconstituents --- amino acids --- biomaterials --- Ficus carica --- diabetes mellitus --- proteomics --- sperm quality --- bioeconomy --- bioprocesses --- applications --- policy --- social welfare --- sustainability --- nanofiltration --- lipase --- Fusarium heterosporum --- fatty acid methyl ester --- electronics package --- induction heating --- magnetic field --- electric field --- TM110 single-mode cavity --- solder --- eddy current --- GABA --- fermented food --- functional food --- non-protein amino acid --- soy sauce fermentation --- lignocellulosic biomass --- holocellulose --- CMC --- degree of substitution --- excipient --- non-edible --- oil --- biodiesel production --- fuel --- Lactobacillus isolation --- lag phase --- bacteria sequencing --- breast milk --- chitosan --- co-loaded nanoparticles --- hydrophobic modification --- l-ascorbic acid --- thymoquinone --- sustainable supply chain management (SSSCM) --- social sustainability --- qualitative research --- Pakistan --- biohydrogen production --- immobilised cells --- entrapment --- alginate --- activated carbon --- carbon dioxide --- culture media --- microorganism --- optimization --- plant growth promoting rhizobacteria --- oil palm seedlings nursery --- biofertilizers --- chemical fertilizer --- n/a --- sago hampas --- amylase --- cellulase --- substrate feeding --- saccharification --- biomass --- waste cooking oil --- green fuel --- biodiesel --- heterogeneous catalyst --- deoxygenation


Book
Production of Biofuels and Numerical Modeling of Chemical Combustion Systems
Authors: ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Biofuels have recently attracted a lot of attention, mainly as alternative fuels for applications in energy generation and transportation. The utilization of biofuels in such controlled combustion processes has the great advantage of not depleting the limited resources of fossil fuels while leading to emissions of greenhouse gases and smoke particles similar to those of fossil fuels. On the other hand, a vast amount of biofuels are subjected to combustion in small-scale processes, such as for heating and cooking in residential dwellings, as well as in agricultural operations, such as crop residue removal and land clearing. In addition, large amounts of biomass are consumed annually during forest and savanna fires in many parts of the world. These types of burning processes are typically uncontrolled and unregulated. Consequently, the emissions from these processes may be larger compared to industrial-type operations. Aside from direct effects on human health, especially due to a sizeable fraction of the smoke emissions remaining inside residential homes, the smoke particles and gases released from uncontrolled biofuel combustion impose significant effects on the regional and global climate. Estimates have shown the majority of carbonaceous airborne particulate matter to be derived from the combustion of biofuels and biomass. “Production of Biofuels and Numerical Modelling of Chemical Combustion Systems” comprehensively overviews and includes in-depth technical research papers addressing recent progress in biofuel production and combustion processes. To be specific, this book contains sixteen high-quality studies (fifteen research papers and one review paper) addressing techniques and methods for bioenergy and biofuel production as well as challenges in the broad area of process modelling and control in combustion processes.

Keywords

microalgae --- hydrothermal liquefaction --- pretreatment --- low O and N biocrude --- biodiesel --- esterification --- free fatty acids --- glycerol --- waste cooking oil --- Computational Fluid Dynamics --- two-stroke --- dual-fuel engine --- simulation --- pre-combustion chamber --- internal combustion engine --- particulate matter emissions --- biomorphic silicon carbide --- vegetal waste --- diesel particulate filter --- biocrude --- metal-oxide catalyst --- bioethanol --- dilute acid pretreatment --- enzymatic hydrolysis --- olive stones --- Pachysolen tannophilus --- response surface methodology --- compression ignition --- direct injection --- cryogenic gas --- diesel engines --- dual fuel engines --- natural gas --- greenhouse gas emissions --- particulate matter --- carotenoids --- extremophiles --- microalgal biotechnology --- eucalyptus kraft lignin --- tree leaf --- pellet --- additive --- biofuel --- circular economy --- piston bowl --- alternative fuel --- vanes --- emulsified biofuel --- combustion --- gasification --- olive --- olive oils --- olive-pruning debris --- olive pomaces --- pyrolysis --- biogas --- environmental impact --- life cycle assessment --- olive pomace --- sustainability --- TGA --- hemicellulose --- cellulose --- lignin --- pseudocomponent kinetic model --- biomass --- culture --- scale-up --- Phaeodactylum tricornutum --- burning characteristics --- fatty acid methyl ester --- added water content --- fuel structure --- distillation temperature --- layered double hydroxide --- toluene steam reforming --- tar --- Ni-based catalyst --- hydrotalcite --- hydrogen production --- n/a


Book
Biomass Derived Heterogeneous and Homogeneous Catalysts
Authors: ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

In this book, the performance of homogeneous and heterogeneous catalysts applied in biomass processing was assessed, paying special attention to the main advantages and challenges related to their use. Indeed, these challenges are opportunities to develop new research lines that could be fruitful in the near future. Thus, different studies are included, dealing with diverse subjects, with one main goal in common: the improvement of different aspects related to biomass processing through the use of catalysts.


Book
Biotechnology for Sustainability and Social Well Being
Authors: --- ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

This book covers the latest development of bioprocess technology including theoretical, numerical, and experimental approaches in biotechnology as well as green technology that bridge conventional practices and Industry 4.0. Bioprocessing is one of the key factors in several emerging industries of biofuels, used in the production of biogas, bioethanol, and biodiesel; industrial enzymes; waste management through biotechnology; new vaccines; and many more. It is hoped that the novel bioprocess and green biotechnologies presented in this book are useful in assisting the global community in working towards fulfilling the Sustainable Development Goals (SDG) of the United Nations.

Keywords

extraction --- leaf --- liquid biphasic flotation --- polygonum --- protein --- date fruits --- proximate analysis --- physico-chemical characteristics --- date sugar --- phytoconstituents --- amino acids --- biomaterials --- Ficus carica --- diabetes mellitus --- proteomics --- sperm quality --- bioeconomy --- bioprocesses --- applications --- policy --- social welfare --- sustainability --- nanofiltration --- lipase --- Fusarium heterosporum --- fatty acid methyl ester --- electronics package --- induction heating --- magnetic field --- electric field --- TM110 single-mode cavity --- solder --- eddy current --- GABA --- fermented food --- functional food --- non-protein amino acid --- soy sauce fermentation --- lignocellulosic biomass --- holocellulose --- CMC --- degree of substitution --- excipient --- non-edible --- oil --- biodiesel production --- fuel --- Lactobacillus isolation --- lag phase --- bacteria sequencing --- breast milk --- chitosan --- co-loaded nanoparticles --- hydrophobic modification --- l-ascorbic acid --- thymoquinone --- sustainable supply chain management (SSSCM) --- social sustainability --- qualitative research --- Pakistan --- biohydrogen production --- immobilised cells --- entrapment --- alginate --- activated carbon --- carbon dioxide --- culture media --- microorganism --- optimization --- plant growth promoting rhizobacteria --- oil palm seedlings nursery --- biofertilizers --- chemical fertilizer --- n/a --- sago hampas --- amylase --- cellulase --- substrate feeding --- saccharification --- biomass --- waste cooking oil --- green fuel --- biodiesel --- heterogeneous catalyst --- deoxygenation


Book
Biomass Derived Heterogeneous and Homogeneous Catalysts
Authors: ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

In this book, the performance of homogeneous and heterogeneous catalysts applied in biomass processing was assessed, paying special attention to the main advantages and challenges related to their use. Indeed, these challenges are opportunities to develop new research lines that could be fruitful in the near future. Thus, different studies are included, dealing with diverse subjects, with one main goal in common: the improvement of different aspects related to biomass processing through the use of catalysts.


Book
Biotechnology for Sustainability and Social Well Being
Authors: --- ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

This book covers the latest development of bioprocess technology including theoretical, numerical, and experimental approaches in biotechnology as well as green technology that bridge conventional practices and Industry 4.0. Bioprocessing is one of the key factors in several emerging industries of biofuels, used in the production of biogas, bioethanol, and biodiesel; industrial enzymes; waste management through biotechnology; new vaccines; and many more. It is hoped that the novel bioprocess and green biotechnologies presented in this book are useful in assisting the global community in working towards fulfilling the Sustainable Development Goals (SDG) of the United Nations.

Keywords

Technology: general issues --- extraction --- leaf --- liquid biphasic flotation --- polygonum --- protein --- date fruits --- proximate analysis --- physico-chemical characteristics --- date sugar --- phytoconstituents --- amino acids --- biomaterials --- Ficus carica --- diabetes mellitus --- proteomics --- sperm quality --- bioeconomy --- bioprocesses --- applications --- policy --- social welfare --- sustainability --- nanofiltration --- lipase --- Fusarium heterosporum --- fatty acid methyl ester --- electronics package --- induction heating --- magnetic field --- electric field --- TM110 single-mode cavity --- solder --- eddy current --- GABA --- fermented food --- functional food --- non-protein amino acid --- soy sauce fermentation --- lignocellulosic biomass --- holocellulose --- CMC --- degree of substitution --- excipient --- non-edible --- oil --- biodiesel production --- fuel --- Lactobacillus isolation --- lag phase --- bacteria sequencing --- breast milk --- chitosan --- co-loaded nanoparticles --- hydrophobic modification --- l-ascorbic acid --- thymoquinone --- sustainable supply chain management (SSSCM) --- social sustainability --- qualitative research --- Pakistan --- biohydrogen production --- immobilised cells --- entrapment --- alginate --- activated carbon --- carbon dioxide --- culture media --- microorganism --- optimization --- plant growth promoting rhizobacteria --- oil palm seedlings nursery --- biofertilizers --- chemical fertilizer --- sago hampas --- amylase --- cellulase --- substrate feeding --- saccharification --- biomass --- waste cooking oil --- green fuel --- biodiesel --- heterogeneous catalyst --- deoxygenation


Book
Production of Biofuels and Numerical Modeling of Chemical Combustion Systems
Authors: ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

Biofuels have recently attracted a lot of attention, mainly as alternative fuels for applications in energy generation and transportation. The utilization of biofuels in such controlled combustion processes has the great advantage of not depleting the limited resources of fossil fuels while leading to emissions of greenhouse gases and smoke particles similar to those of fossil fuels. On the other hand, a vast amount of biofuels are subjected to combustion in small-scale processes, such as for heating and cooking in residential dwellings, as well as in agricultural operations, such as crop residue removal and land clearing. In addition, large amounts of biomass are consumed annually during forest and savanna fires in many parts of the world. These types of burning processes are typically uncontrolled and unregulated. Consequently, the emissions from these processes may be larger compared to industrial-type operations. Aside from direct effects on human health, especially due to a sizeable fraction of the smoke emissions remaining inside residential homes, the smoke particles and gases released from uncontrolled biofuel combustion impose significant effects on the regional and global climate. Estimates have shown the majority of carbonaceous airborne particulate matter to be derived from the combustion of biofuels and biomass. “Production of Biofuels and Numerical Modelling of Chemical Combustion Systems” comprehensively overviews and includes in-depth technical research papers addressing recent progress in biofuel production and combustion processes. To be specific, this book contains sixteen high-quality studies (fifteen research papers and one review paper) addressing techniques and methods for bioenergy and biofuel production as well as challenges in the broad area of process modelling and control in combustion processes.

Keywords

Research & information: general --- Technology: general issues --- microalgae --- hydrothermal liquefaction --- pretreatment --- low O and N biocrude --- biodiesel --- esterification --- free fatty acids --- glycerol --- waste cooking oil --- Computational Fluid Dynamics --- two-stroke --- dual-fuel engine --- simulation --- pre-combustion chamber --- internal combustion engine --- particulate matter emissions --- biomorphic silicon carbide --- vegetal waste --- diesel particulate filter --- biocrude --- metal-oxide catalyst --- bioethanol --- dilute acid pretreatment --- enzymatic hydrolysis --- olive stones --- Pachysolen tannophilus --- response surface methodology --- compression ignition --- direct injection --- cryogenic gas --- diesel engines --- dual fuel engines --- natural gas --- greenhouse gas emissions --- particulate matter --- carotenoids --- extremophiles --- microalgal biotechnology --- eucalyptus kraft lignin --- tree leaf --- pellet --- additive --- biofuel --- circular economy --- piston bowl --- alternative fuel --- vanes --- emulsified biofuel --- combustion --- gasification --- olive --- olive oils --- olive-pruning debris --- olive pomaces --- pyrolysis --- biogas --- environmental impact --- life cycle assessment --- olive pomace --- sustainability --- TGA --- hemicellulose --- cellulose --- lignin --- pseudocomponent kinetic model --- biomass --- culture --- scale-up --- Phaeodactylum tricornutum --- burning characteristics --- fatty acid methyl ester --- added water content --- fuel structure --- distillation temperature --- layered double hydroxide --- toluene steam reforming --- tar --- Ni-based catalyst --- hydrotalcite --- hydrogen production

Listing 1 - 10 of 13 << page
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