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... A highly efficient and selective process has been developed for the conversion of 1-hexene to jet and diesel fuels. In combination with commercial processes for the dehydration of ethanol and trimerization of ethylene, this work provides a basis for the synthesis of full-performance hydrocarbon fuels from bio-ethanol. Selective oligomerization of 1-hexene with a Cp₂ZrCl₂/MAO catalyst at ambient te ...
... Inulin and inulin-containing materials are good substrates for bioethanol production. In order to construct genetically stable recombinant yeast cells carrying the inulinase gene for bioethanol production from inulin, a new 18S rDNA integration vector was constructed in this study. After the INU1 gene encoding exo-inulinase was ligated into the 18S rDNA integration vector, transformed into uracil ...
acidification; bioethanol; biorefining; carbon cycle; coal; consequential life cycle assessment; corn; energy balance; energy efficiency; environmental impact; environmental performance; ethanol; ethanol production; eutrophication; global warming; greenhouse gas emissions; heat; life cycle thinking; models; nonrenewable resources; sugar industry; sugarcane bagasse; water pollution; South Africa
Abstract:
... Biofuels are heavily debated as to their potential to reduce transport-related greenhouse gas emissions. Life cycle thinking gave rise to formal evaluations of the energy balance of such fuels, which led to the vigorously conducted “corn to ethanol” debates. Just as consensus was building on such evaluations came the “carbon debt” insights, a result of applying consequential Life Cycle Assessment ...
... The present study consists of an essay about the 3rd generation bioethanol production from microalgae. The strain of microalgae used in this research has been isolated from slaughterhouse wastewater. The study starts by applying five methods (thermic shock, grinding, acid treatment, basic treatment, and enzyme hydrolysis) to disrupt cell wall. The maximum total sugar content has been obtained afte ...
... Pseudomonas pseudoalcaligenes CECT 5344 is a bacterium able to assimilate cyanide as a nitrogen source at alkaline pH. Genome sequencing of this strain allowed the detection of genes related to the utilization of furfurals as a carbon and energy source. Furfural and 5-(hydroxymethyl) furfural (HMF) are byproducts of sugars production during the hydrolysis of lignocellulosic biomass. Since they inh ...
bioelectricity; bioethanol; biomass; carbon dioxide; energy efficiency; environmental impact; greenhouse gas emissions; straw; technology; vehicles (equipment); China
Abstract:
... Bioethanol and bioelectricity are two main energy conversion processes for straw utilization. Considering the three stages to power a vehicle, namely, energy conversion, distribution, and utilization, a lifecycle comparative analysis was conducted on the two processes according to their energy efficiencies and environmental impacts in China, e.g., CO₂ and NOₓ emissions and water consumption. In th ...
... The fossil fuel crisis in the world has raised much concern on developing biomass energy. Fermentable sugars are an important product which can be converted to bioethanol. Although sulfuric acid saccharification is a good method for breaking lignocellulose biomass, efficiency is not well-promoted in dilute acid, as many fermentation inhibitors are co-produced. A continuous saccharification approac ...
... PURPOSE OF REVIEW: The depletion of fossil reserves and environmental challenges associated with fossil fuels are major drivers of the search for sustainable renewable energy sources. Bioethanol production from macroalgae is one of the promising alternatives to reduce use of fossil fuels and achieve energy security and ecological sustainability. The purpose of this review is to critically discuss ...
... Photocatalytic H₂ evolution from ethanol dehydrogenation is a convenient strategy to store solar energy in a highly valuable fuel with potential zero net CO₂ balance. Herein, we report on the synthesis of CoTiO₃/TiO₂ composite catalysts with controlled amounts of highly distributed CoTiO₃ nanodomains for photocatalytic ethanol dehydrogenation. We demonstrate these materials to provide outstanding ...
... Rice straw is a major crop residue which is burnt in many countries, creating significant air pollution. Thus, alternative routes for disposal of rice straw are needed. Biotechnological treatment of rice straw hydrolysate has potential to convert this agriculture waste into valuable biofuel(s) and platform chemicals. Geobacillus thermoglucosidasius is a thermophile with properties specially suited ...
Lei Gan; Arunraj Chidambaram; Pol G. Fonquernie; Mark E. Light; Duane Choquesillo-Lazarte; Hongliang Huang; Eduardo Solano; Julio Fraile; Clara Viñas; Francesc Teixidor; Jorge A. R. Navarro; Kyriakos C. Stylianou; José G. Planas
... Biofuels are considered sustainable and renewable alternatives to conventional fossil fuels. Biobutanol has recently emerged as an attractive option compared to bioethanol and biodiesel, but a significant challenge in its production lies in the separation stage. The current industrial process for the production of biobutanol includes the ABE (acetone–butanol–ethanol) fermentation process from biom ...
algorithms; biodiesel; bioethanol; carbon; carbon dioxide; circular economy; energy flow; fish; fossil fuels; fuel production; industrial symbiosis; methanol; power generation; power plants; wastewater treatment; water
Abstract:
... This article describes a unique industrial symbiosis employing an algae cultivation unit (ACU) at the core of a novel eco-industrial park (EIP) integrating fossil-fuel fired power generation, carbon capture, biofuel production, aquaculture, and wastewater treatment. A new modelling framework capable of designing and evaluating materials and energy exchanges within an industrial eco-system is intro ...
agricultural wastes; bioethanol; ecosystem services; energy balance; energy crops; ethanol; feedstocks; gas emissions; greenhouse gases; harvesting; life cycle assessment; models; planning; production costs; rice straw; Taiwan
Abstract:
... Contemporary reports on the energy and environmental benefits of bioethanol have suggested that the cellulosic ethanol is significantly more efficient. To understand the development potential of energy crops in Taiwan, the present study has assessed the resources and cost inputs for the planning, harvesting, transporting, and storing procedures of the first generation energy crops during 2007–2010 ...
... Substituting biomass for fossil-based feedstock is a potential scenario of chemical production. To achieve sustainable production, various issues must be considered, such as the constraints of limited biomass resources, feasibility of production technologies, and competitiveness of bio-based chemical products. In this study, we developed a new framework for the design and assessment of bio-based c ...
Orchidaceae; Panicum virgatum; Sebacina vermifera; bentonite; bioethanol; cell wall components; clay; drought tolerance; energy crops; ethanol production; field experimentation; gene expression regulation; genetically modified organisms; host plants; lignification; lignin; microbial biomass; mycorrhizal fungi; roots; United States
Abstract:
... Sebacina vermifera (MAFF-305830) is a mycorrhizal fungus originally isolated from the roots of orchids that we have previously shown to be tremendously beneficial in enhancing biomass yield and drought tolerance in switchgrass, an important bioenergy crop for cellulosic ethanol production in the United States. Towards this end, we have developed a bentonite clay particle-based delivery system for ...
Thabata Maria Alvarez; Marcelo Vizoná Liberato; João Paulo L. Franco Cairo; Douglas A. A. Paixão; Bruna M. Campos; Marcel R. Ferreira; Rodrigo F. Almeida; Isabela O. Pereira; Amanda Bernardes; Gabriela C. G. Ematsu; Mariana Chinaglia; Igor Polikarpov; Mario de Oliveira Neto; Fabio Marcio Squina
X-radiation; amino acids; barley; beta-glucanase; beta-glucans; bioethanol; enzyme activity; glycosides; metagenomics; pH; pulp and paper industry; sequence homology; sugarcane soils
Abstract:
... Glycoside hydrolases (GHs) are enzymes found in all living kingdoms that are involved in multiple physiological functions. Due to their multiple enzymatic activities, GHs are broadly applied in bioethanol, food, and paper industry. In order to increase the productivity of these industrial processes, a constant search for novel and efficient enzymes has been proved to be necessary. In this context, ...
... In this work, a novel two-step process to prepare primary lignin amine was developed. The lignin used in this study was obtained from the residue of cellulosic sugar fermentation for bioethanol (referred as “lignin”). The lignin was initially oxidized through Fenton oxidation. The oxidized lignin was further converted to lignin amine by reductive amination. Ammonia was used in the second step lead ...
aqueous solutions; bioethanol; chemical bonding; ethanol; freezing; pervaporation; polymers
Abstract:
... Poly(dimethylsiloxane) (PDMS) membranes are widely used for bioethanol separation. However, the network cavity size r₃ of PDMS membranes is generally smaller than the ethanol kinetic radius (0.225 nm), which limits the transport of ethanol molecules and weakens the pervaporation performance. Herein, we proposed a particle-driven, ultrafast-cured strategy to overcome the above key issue: (1) Incorp ...
... Biofuels are one class of fuel prepared from living things or from the waste they generate. Biofuels may be wood, wood chippings and straw pellets or liquids made from wood, biogas (like methane) from animals’ excrement, ethanol, diesel or other liquid fuels made from processing plant material or waste oil and others. Biofuels are generally in the form of alcohols, esters, ethers, alkenes and othe ...
... Bioethanol is an important liquid fuel complement. Barley is a potential alternative raw material for ethanol production because its by-product is a nutritious feed. The barley m351mutant, which has a mutation for low beta-glucan content, was tested for its ethanol production efficiency and feed fraction quality in a pilot fermentation experiment. Grain samples of m351 and the corresponding wild t ...
bioethanol; biomass; biosynthesis; byproducts; economic sustainability; energy; environmental impact; ethanol; feedstocks; fermentation; gasification; greenhouse gas emissions; greenhouse gases; land use change; lignocellulose; soil quality; synthesis; synthesis gas; system boundary
Abstract:
... This review compiled the life cycle (LC) studies on ethanol produced via gasification of biomass centering on greenhouse gas (GHG) emission and production cost to discuss their potential environmental and socioeconomic impacts. Numerous efforts have been made to evaluate the LC of ethanol produced with biosynthesis (gasification-microbial fermentation) and chemical synthesis (gasification-catalyti ...
arid lands; bioethanol; commercialization; economic sustainability; energy policy; ethanol production; farms; feedstocks; gasoline; stakeholders; supply chain; sweet sorghum; India
Abstract:
... The last one to two decades have seen several countries stipulating a mandatory requirement of 5–10% blending of biofuels with petrol and diesel. The mandatory blending has triggered a rapid growth in the biofuel sector. Several governments have put in place biofuel policies that have a bearing right from the production of biofuels crops at the farm to their conversion into transport-grade biofuel ...
... Biofuel refers to the production of fuel from organic matter, these fuel have ability to replace conventional fossil fuels and also emit less pollution; hence, they are considered eco-friendly. The term ‘third-generation biofuel’ has only recently entered the mainstream; it refers to biofuel derived from algae. Microalgae can be converted into bioenergy such as biogas, biodiesel and bio oil. Micro ...
... The production of biobased carbonaceous powder from bioethanol coproduct lignin for use as a substitute for fossil fuel-derived conductive carbon black filler is examined. The synthesis procedure used for the formation of biobased carbon black is studied in order to obtain properties similar to conventional carbon black. Characterization of the carbon material after varying carbonization temperatu ...
... Corn stover is the most produced byproduct from maize worldwide. Since it is generated as a residue from maize harvesting, it is an inexpensive and interesting crop residue to be used as a feedstock. An ecologically friendly pretreatment such as autohydrolysis was selected for the manufacture of second-generation bioethanol from corn stover via whole-slurry fermentation at high-solid loadings. Tem ...
biodiesel; bioethanol; computer software; ethanol; guidelines; life cycle assessment; sugarcane; surveys; Brazil
Abstract:
... PURPOSE: We bibliometrically evaluated the scientific literature outlined around Brazilian life cycle assessment (LCA). Our aim is twofold: (1) Analyze the Brazilian scientific literature on LCA, forming a current view of how the LCA methodology is applied in the country; (2) within this view, trace the evolution of themes, characterize institution collaboration, and indicate major influences in B ...
... The present paper reports the bio-refinery concept on exploiting the pre-treated non-detoxified corncob hydrolysate for bio-gas production and simultaneously utilizing the delignified cellulosic residue for bio-ethanol and black liquor for extraction of lignin. Based on the optimized conditions, corncob was pre-treated with HNO₃ at 121 °C for 15 min at a solid concentration of 20% (w/v). Maximum s ...
Fourier transform infrared spectroscopy; Miscanthus giganteus; bioethanol; biomass; biorefining; cellulose; cost effectiveness; energy crops; feedstocks; fractionation; hemicellulose; lignin; lignocellulose; neutralization; principal component analysis; scanning electron microscopy; solvents; toxicity
Abstract:
... Using a biorefinery approach, biomass polymers such as lignin and carbohydrates can be selectively purified from lignocellulosic feedstocks with the aim of generating not only lignocellulosic bioethanol but also high value bio-based compounds. Furthermore, the efficient use of the entire biomass can increase overall feedstock value and significantly contribute to process cost-effectiveness. Theref ...
... A biorefinery approach was applied for pectin extraction, xylooligosaccharides’ (XOs) and bioethanol production from cocoa pod husk (CPH) using citric acid-assisted hydrothermal pretreatment. Under optimal conditions at 120° C, 10 min and 2% w.v⁻¹ of citric acid a high pectin recovery (19.5%) with high content of uronic acids (41.9%) was obtained. In addition, the liquid fraction presented a XOs c ...
... The use of biomass in biofuel production is known to harness only a fraction of the entire biomass leading to the generation of large quantities of waste. This underutilisation of biomass has become a major challenge in the development of biofuels, such as bioethanol, as an economical and eco-friendly alternative to fossil fuels. In this study, the algae Ulva fasciata, Hydropuntia dentata and Sarg ...
... In this study, process optimization of an ultrasonic-assisted organosolv/liquid oxidative pretreatment (SOP) of oil palm fronds (OPFs) for the simultaneous recovery of cellulose, bioethanol and biochemicals (i.e. phenolic compounds) in a biorefinery concept was carried out. The effects of time (30–60min.), temperature (40–80°C), NaOH concentration (1–5%) and sample:solvent ratio (1:10–1:50g/ml) on ...
... An innovative integrated biorefinery approach using the green macroalgae Chaetomorpha linum was investigated in the present study for the co-production of bioethanol and biogas. Among three pretreatments of C. linum biomass, consisting of acidic, neutral and alkali ones, 3% NaOH pretreatment gave the best result in terms of thallus disintegration, biomass recovery and enzymatic digestibility as de ...
... Corncob residue (CCR) is an economic feedstock with enormous potential for the production of bioethanol. In this work, potassium hydroxide (KOH) pretreatment of CCR was investigated under relatively mild conditions, and the effectiveness of KOH pretreatment was evaluated by enzymatic saccharification at high solid loading. Results showed that after KOH pretreatment (16 wt% KOH dosage at 70 °C for ...
... Evaporation and chemical preservation were combined for long‐term storage of sweet sorghum juice (SSJ). The preserved SSJ was further used as substrate for ethanol fermentation. Different chemicals including hydrogen peroxide, sodium hypochlorite, sodium benzoate, and methyl paraben were used as co‐preservatives and were added into concentrated SSJ that contains ~40% (w/v) of sugars. The effects o ...
acidification; bioethanol; biogas; burning; combustion; ecosystem services; electricity; fertilizers; global warming; life cycle assessment; rice straw; soil; Thailand
Abstract:
... Life cycle assessment of four rice straw utilization systems including; (1) direct combustion for electricity, (2) biochemical conversion to bio-ethanol and biogas, (3) thermo-chemical conversion to bio-DME, and (4) incorporation into the soil as fertilizer have been conducted to compare their environmental performances. The results showed that per ton of dry rice straw, the bio-ethanol pathway re ...
... A process strategy to aid in optimal enzymatic hydrolysis through the addition of polyethylene glycol (PEG6000) was tested for separate hydrolysis and fermentation (SHF) and simultaneous saccharification and fermentation (SSF). Pretreated wheat straw at 30% solids (w/w) loading was enzymatically hydrolyzed with 0, 0.5, 1, 1.5, 2 and 2.5% of PEG6000 through SHF and SSF. During SHF, bioethanol conce ...
... Three known types of ethanol reforming processes, ethanol steam reforming (ESR), partial oxidation (POX) and auto-thermal reforming (ATR), are investigated. Favorable operating conditions are identified for each reaction system to maximize the production of hydrogen from bioethanol. Each process consists of three sections: the main reactor (ESR, POX or ATR), the CO clean-up section comprised of th ...
bioethanol; carbon; coproducts; ethanol production; exergy; issues and policy; system boundary; temperature; wheat straw
Abstract:
... The thermodynamic implications of different bioethanol production routes from wheat straw (a cellulosic co-product or ‘waste’ stream) have been evaluated. Comparative thermodynamic (energy and exergy) analysis gives rise to alternative insights into the relative performance of various process chains. Energy analysis of four different production paths were firstly analysed via the consideration of ...
... Pelletised biomass has been found to have excellent potential for their utilisation in small to medium sized energy systems because of its advantages over loose feedstock. The energy density is increased and so the space occupied in transportation is decreased and the amount of problematic dust or fines is also decreased. Furthermore, pellets provide a more uniform fuel, allowing easier feeding an ...
... In order to improve the efficiency of distillers' grains converting to ethanol, 13 dilute solution explosions were evaluated based on the optimization of pure water explosion. To decrease residual inhibitor content, the exploded slurry was dried at 105°C. Using a 1.1 mol/L butanone solution explosion, with the explosion temperature set at 160°C (pressure at 1.9 MPa), the residence time at 10 min, ...
... NaOH-soaked sugarcane bagasse (ASSB) could be converted into monosaccharides by low cellulase loading at a solid loading of 2%. However, different initial solid loading affected the enzymatic convertibility. Therefore, the effects of solid and cellulase loadings were investigated in this work. Four fermentation strategies, simultaneous saccharification and fermentation (SSF), fed-batch SSF, semi-S ...
... According to the EU 28/2009 directive, member states are mandated to substitute 10% of fossil fuels used in transportation with biofuels by the year 2020. Bioethanol production is expected to contribute significantly towards fulfilling Greece's obligations. First-generation bioethanol, produced from amylaceous and sugar crops, is the most important biofuel globally. Maize (Zea mays L.) is the main ...
... A comprehensive bio-composition investigation of microalgal species is essential for categorizing their applications. In this study, nutrients uptake followed by complete biomass characterizations, including proximate, ultimate, and bio-compounds (proteins, carbohydrates, and lipids), were performed along with FTIR and TGA/DTG, analyses of four microalgal strains (Tetradesmus dimorphus GEEL-06, Te ...
bioethanol; biomass; carbon markets; case studies; economic valuation; emissions; ethanol; ethanol production; global warming; greenhouse gases; linear models; production technology; supply chain; uncertainty
Abstract:
... The optimal design of biofuels production systems is a key component in the analysis of the environmental and economic performance of new sustainable transport systems. In this paper a general mixed integer linear programming modelling framework is developed to assess the design and planning of a multi-period and multi-echelon bioethanol upstream supply chain under market uncertainty. The optimisa ...
agricultural wastes; bioethanol; biomass; biorefining; economic sustainability; ethanol production; feedstocks; fermentation; gasification; issues and policy; lignocellulose; linear programming; mixing; models; supply chain; South Korea
Abstract:
... This study aims to present a comprehensive decision model for design of the integrated bioethanol supply chain (IBSC). In achieving this goal, we developed a new optimization model using mixed integer linear programming. The model consists of the objective function to minimize the required cost to establish the IBSC along with practical constraints including the limit of biomass, the capacity of t ...
... Anaerobic fungi (Neocallimastigomycota) are promising lignocellulose-degrading microorganisms that can be exploited by the biofuel industry. While natural production of ethanol by these microorganisms is very low, there is a greater potential for their use in the biogas industry. More specifically, anaerobic fungi can contribute to biogas production by either releasing holocellulose or reducing su ...
... Corn is the second most abundant crop produced worldwide annually. Its residue, corn stover, is among the three most agricultural residues globally and the first one in the United States. The available corn stover in the world could be used to produce more than 45 million cubic meters of bioethanol (60% of the world production) instead of being mainly burnt on the fields. This practice could poten ...
... Algae are one of the most viable feedstock options that can be converted into different bioenergies viz., bioethanol, biobutanol, biodiesel, biomethane, biohydrogen, etc. owing to their renewable, sustainable and economic credibility features. Algal biomass to fuel biorefining process is generally classified into three categories as chemical, biochemical and thermochemical methods. The present art ...
bioethanol; biomass; biorefining; cattle; cattle feeds; corn; crops; ethanol; ethanol production; feed supplements; food production; gasoline; grasses; grazing; greenhouse gas emissions; greenhouse gases; industrial ecology; land use change; lignocellulose; livestock and meat industry; markets; models; pastures; planting; single cell protein; sugarcane; yeasts; Brazil; United States
Abstract:
... It has been argued by some that the substitution of biofuels for gasoline could increase greenhouse gas (GHG) emissions, rather than reduce them. The increase is attributed to the indirect land use change effects of planting new grain and corn crops around the world to replace those progressively being devoted to ethanol production. In this paper, indirect effects are minimised by allowing land to ...
biobutanol; biodiesel; bioethanol; biogas; biomass production; biorefining; carbon; carbon dioxide; energy; flue gas; industrial wastewater; microalgae; nutrition; photosynthesis; solar energy; sustainable development; wastewater treatment; water pollution; world markets
Abstract:
... This review conceptualizes the recent bio-circular trend of algae for CO₂ sequestration and wastewater treatment and biomass production. Articles from peer-reviewed journals are focused on providing state of art review on production of bio-oil, bio-diesel, bio-ethanol, bio-butanol, bio‑hydrogen and bio-methane. It provided a clear illustration on the value of algae biomass in the global market, ca ...
alternative fuels; bioethanol; biogas; energy policy; ethanol; ethanol production; fermentation; fossil fuels; greenhouse gas emissions; greenhouse gases; land use change; laws and regulations; markets; soybean meal; wheat; wheat straw
Abstract:
... Until today, first generation (1G) biofuels dominate the market for alternative fuels. The European Commission decided to cap 1G biofuels and promote second generation (2G) biofuels with the intention to reduce greenhouse gas (GHG) emissions, to limit the competition of food, feed and biofuels, as well as to improve societal approval. The assessment of consequences entailed to a shift from 1G to 2 ...
... In this paper, we address a corn-stover harvest scheduling problem (CSHSP) that arises when a cellulosic ethanol plant contracts with farmers to harvest corn stover after the grain harvest has been completed. The plant contracts a fleet of harvesting crews, which must be assigned by the plant scheduler to harvest fields as they are called in by the farmers over the harvest season. First, we study ...
... A cost competitive integrated technology to convert solid state fermented sweet sorghum bagasse (SS) into cellulosic ethanol which combined ethanol distillation, NaOH pretreatment and simultaneous saccharification and co-fermentation (SSCF) was presented in this study. After solid-state fermentation, the SS was distilled with 10% (w/w dry material, DM) NaOH to separate sugar-based ethanol and pret ...
... The environmental pollution caused by the excess of human energy consumption and the foreseeable depletion of fossil fuels underline the need for new eco-friendly, sustainable and cost effective energy sources. Recent research works on microalgae have identified this new bio-material as a promising technology for bioenergy production, wastewater treatment, the development of high value added produ ...
... In order to combat emerging concerns due to global climate change and increasing conventional fuel prices, bioethanol appears to be a sustainable green resource as co-fuel to meet the future energy demand for transportation. As per the present scenario, bioenergy research emphasizes on bioethanol production from alternate non-terrestrial substrates, like microalgae and macroalgae. Among them, macr ...
United Nations Framework Convention on Climate Change; bioethanol; biomass; climate; climate change; combustion; electricity; electricity generation; energy industry; environmental policy; forests; greenhouse gas emissions; greenhouse gases; infrastructure; land use change; models; pollution control; sustainable development; water power; wind power; Madagascar
Abstract:
... Using the integrated assessment model TIAM-ECN, we analyze how Madagascar's nationally determined contribution (NDC) to the Paris Agreement can be implemented in both the energy and non-energy sectors. We explore how the country's national climate goal for 2030 can be reached under two different cost levels for climate change mitigation through land-use change. We find that land use is the main se ...
bioethanol; eco-efficiency; experts; growth retardation; guidelines; infrastructure; transportation; Brazil
Abstract:
... The main purpose of this paper is to use data envelopment analysis (DEA) as a support tool to establish a relative eco-efficiency measure for the different bioethanol transportation modes and to prioritize these different modes according to these figures. From a review of previous studies, we selected a set of attributes to be considered in DEA, and then experts were consulted about the importance ...
ash content; bioethanol; biomass; case studies; economies of scale; supply chain; Texas
Abstract:
... An alternative to the production of fossil transportation fuels is the production of biofuels, specifically, bioethanol. One of the main opportunity areas is the reduction in the overall cost of biofuel. An approach to reduce this cost is to design and implement a supply chain (SC) that considers the quality-related properties of the biomass as well as the economies of scale to minimize the logist ...
... Transport emissions account for around a quarter of all CO₂ emissions and so, automotive fuels are a key area of research for combating climate change. Widespread adoption of bio-ethanol fuel blends has been the first step in this direction. However, the economic and environmental viability of bio-ethanol usage is hampered by inefficiencies in its production, resulting in a need for significant im ...
agricultural wastes; bioethanol; consumers (people); linear programming; models; operating costs; process design; profitability; stems; supply chain; Colombia
Abstract:
... To reduce the logistical and operating costs for biofuel plants, it is important to make a strategic decision to select the proper site for a new facility. Due to the facility's complexity, the facility-location problem must consider the supply-chain structure, involving the material flow from suppliers to customers. This paper proposes an optimisation framework that combines the process design an ...
... The present study investigated the feasibility of the recovery and reuse oxalic acid in a multistage process for the pretreatment of a lignocellulosic biomass. Electrodialysis (ED), an electrochemical process using ion exchange membranes, was used to recover and reuse oxalic acid in the multistage process. The ED optimal condition for recover oxalic acid was potential of 10V and pH 2.2 in syntheti ...
... BACKGROUND: Miscanthus is a leading bioenergy crop with enormous lignocellulose production potential for biofuels and chemicals. However, lignocellulose recalcitrance leads to biomass process difficulty for an efficient bioethanol production. Hence, it becomes essential to identify the integrative impact of lignocellulose recalcitrant factors on cellulose accessibility for biomass enzymatic hydrol ...
Panicum virgatum; bioenergy industry; bioethanol; biomass; carbon markets; corn; ethanol; ethanol production; game theory; market analysis; models; prices; supply chain; United States
Abstract:
... The Renewable Fuel Standard (2007) set aggressive cellulosic biofuel goals that have not been realized. Corn ethanol dominates the market and penetration of cellulosic ethanol is unlikely in the near term due to economic and technical barriers. This paper uses game theory to model biomass and ethanol production decisions and calculate the incentives that would be necessary to drive the industry to ...
... The growing concerns over the depleting fossil fuels and increase in the release of greenhouse gas emissions have necessitated the search for the potential biomass source for alternative energy generation. In this context, third generation biomass specifically maroalgae has gained a lot of research interest in the recent years for energy and products generation such as ethanol, butanol, alginates, ...
... Biologically produced alcohols are of great current interest for renewable solvents and liquid transportation fuels. While bioethanol is now produced on a massive scale, butanol has superior fuel characteristics and an additional value as a solvent and chemical feedstock. Butanol production has been demonstrated at ambient temperatures in metabolically-engineered mesophilic organisms, but the abil ...
bioethanol; biomass; corn; crop production; crop rotation; crops; drying; energy; energy conservation; exports; forage; hybrids; irrigation systems; land use; markets; oils; plant protection; prices; production technology; profitability; raw materials; sowing; water conservation; France; Hungary; Italy
Abstract:
... Summary Today, maize is one of the most important crops in the world. Its range of uses also gets wider (forage, food, oil, bioethanol and energy). In the worldwide ranking of average yield, Hungary is ranked 13th. In Europe, Hungary is the third, following France and Italy. In Hungary, maize is being grown on the biggest area for decades, Its sowing area is stable, i.e. 1.1–1.2 million hectares a ...
... Summary The yearly bioethanol production in Hungary is 150 million litre (with the highest amount being produced in Szabadegyháza). In the near future, several high capacity bioethanol plants are planned to be established. In Hungary, the amount of livestock has been reduced, we cannot use up the maize surplus as forage and the maize prices on the international market are low. These could also mot ...
... The goal of this research is to develop a partial delignification process for corn stover that simultaneously improves accessibility of enzymes to cellulose and recovers hydroxycinnamic acids (HCA) as a value-added product from the lignin. We recover HCAs from corn stover with a mild base extraction employing sodium hydroxide, ethanol, and water. The total HCA yield was 33.5 wt% on a lignin basis ...
... Large quantities of fruit waste are generated from agricultural processes worldwide. This waste is often simply dumped into landfills or the ocean. Fruit waste has high levels of sugars, including sucrose, glucose, and fructose, that can be fermented for bioethanol production. However, some fruit wastes, such as citrus peel waste (CPW), contain compounds that can inhibit fermentation and should be ...
... Wide-scale implementations or industrial-scale productions of biofuels from food/fruit waste are insufficient. One of the major reasons of wider implementations is lack of confidence on potential outcomes and subsequent monetary benefit. A mathematical model can provide estimations of potential biofuel generation capability under different input conditions. This paper presents a mathematical model ...
... Cadmium (Cd) is one of the most hazardous trace metals, and rapeseed is a major oil crop over the world with considerable lignocellulose residues applicable for trace metal phytoremediation and cellulosic ethanol co-production. In this study, we examined that two distinct rapeseed cultivars could accumulate Cd at 72.48 and 43.70 ug/g dry stalk, being the highest Cd accumulation among all major agr ...
... Due to its renewable and clean characteristics, bioethanol is an advantageous alternative energy source to fossil fuels. Although crop straw is a suitable material for bioethanol production, the low-concentration of fermentable sugars and the presence of inhibitors such as furfural and acetic acid in straw hydrolysate are not conducive to ethanol fermentation and pose significant limitations. This ...
Vijayendran Raghavendran; Joseph P. Webb; Michaël L. Cartron; Vicki Springthorpe; Tony R. Larson; Michael Hines; Hamza Mohammed; William B. Zimmerman; Robert K. Poole; Jeffrey Green
... BACKGROUND: Industrial biotechnology will play an increasing role in creating a more sustainable global economy. For conventional aerobic bioprocesses supplying O₂ can account for 15% of total production costs. Microbubbles (MBs) are micron-sized bubbles that are widely used in industry and medical imaging. Using a fluidic oscillator to generate energy-efficient MBs has the potential to decrease t ...
... Ethanol organosolv pretreatment of biomass has been deemed as a green and environmentally friendly process. Lewis acid is regarded as a highly efficient catalyst in the pretreatment and conversion of biomass. In this work, Eucalyptus wood was pretreated by an ethanol/water solution (EWS) with or without aluminium chloride (AlCl₃) catalyst, and the effects of the catalyst and pretreatment temperatu ...
... Supply chain network operation for biomass conversion and utilization is one of the major areas with influence on biomass-related technological progress and commercialization activities. This paper contributes towards optimizing a biomass-to-bioproducts supply chain planning operation by considering multiple cost factors including biomass resource acquisition cost, production cost, and transportat ...
bioethanol; case studies; deterministic models; public policy; social impact; statistical analysis; supply chain; uncertainty; Iran
Abstract:
... This paper proposes a multi-objective robust possibilistic programming model for the design of a sustainable switchgrass-based bioethanol supply chain network under the epistemic uncertainty of input data considering conflicting economic, environmental and social objectives. The newest and most effective environmental and social life cycle assessment-based methods are applied to the proposed model ...
... Increasing demand for land-based climate mitigation requires more efficient management of agricultural landscapes for competing objectives. Here we develop methods for assessing trade-offs and synergies between intensification and carbon-sequestering conservation measures in annual crop production landscapes using the DayCent ecosystem model and the Greenhouse Gases, Regulated Emissions, and Energ ...
... Development of mid-ethanol fuel with an ethyl alcohol content of 20–40% (E30 fuel), which is devoid of phase instability problems and can potentially be applied to automotive technology without modifications, and it is a promising area. One of the promising ways is to develop high-octane Е30 fuel based on cheap low-octane fractions, which will significantly improve the economic parameters of fuel ...
bioethanol; corn; data collection; ethanol; income; marketing channels; markets; prices; Corn Belt region; United States
Abstract:
... This article extends nonparametric measures of efficiency to accommodate the concept of marketing efficiency, which measures changes in net revenues brought about by firms’ use of marketing channels other than spot markets. The measure is appropriate for firms operating under atomistic competition with imperfect information. The proposed measure displays two important features: (a) it uses the alt ...
bioethanol; carbon dioxide; carbon monoxide; combustion; diesel fuel; energy use and consumption; green chemistry; heat; nitrates; nitrogen oxides
Abstract:
... In this article an investigation was carried out to study the effects of cetane improver (2-Ethylhexyl nitrate) (2-EHN) on performance, combustion and emission characteristics of a constant speed, single cylinder CI engine fuelled with E20 (bioethanol (20%) – petrodiesel (80%). A cetane improver, 2-EHN was used at concentration of 1000 ppm and 2000 ppm with the test fuel (E20) and the results were ...
Pseudoxanthomonas; bioethanol; cellulose; ethanol; ethanol production; habitats; lignocellulose; China
Abstract:
... BACKGROUND: The surplus of glycerol has increased remarkably as a main byproduct during the biofuel’s production. Exploiting an alternative route for glycerol utilization is significantly important for sustainability of biofuels. RESULTS: A novel biocatalyst that could be prepared from glycerol for producing 2-oxo-carboxylates was developed. First, Pseudomonas putida KT2440 was reconstructed by de ...
... A novel crude glycerol assisted surfactant pretreatment was evaluated for bioethanol production from chili post-harvest residue. Among the various surfactants screened crude glycerol assisted polyethylene glycol (PEG) pretreatment was found to be more effective. Various process parameters affecting pretreatment were optimized. The optimum conditions of pretreatment were crude glycerol concentratio ...
... In this study, microbial communities from chemicals polluted microhabitats were cultured with the addition of imidazolium-based ionic liquid (IL) to enrich for IL-tolerant microbes. A strain of Fusarium oxysporum BN producing cellulase from these enrichments was capable of growing in 10% (w/v) 1-ethyl-3-methylimidazolium phosphinate, much higher than the normal IL concentrations in the lignocellul ...
... Second generation bioenergy such as cellulosic bioethanol is expected to become commercially available in the near future. Large scale production of this bioenergy will require secure and continuous supplies of raw materials. One promising source of materials is biomass residues that currently remain on the fields following harvest, a feedstock that does not compete with food. However, unsustainab ...
... The ever growing demands for food products such as starch and sugar produces; there is a need to find the sources for saccharification for cellulosic bioethanol production. This study provides the first evidence of the lignocellulolytic and saccharifying ability of a marine bacterium namely Isoptericola sp. JS-C42, a Gram positive actinobacterium with the cocci cells embedded on mycelia isolated f ...
... Fermentation of sugar for production of ethanol was carried out using Saccharomyces cerevisiae cells immobilized in calcium alginate films. Thin films of calcium alginate casted on a microchannel surface were used instead of the typical spherical bead configuration. Yeast immobilized on alginate films produced a higher ethanol yield than free yeast cells under the same fermentation conditions. Als ...
... Herein, a novel route for the production of renewable hydrocarbon jet fuels from the biomass-derived platform chemicals furfural and 2,3-butanediol (BD) was developed. Carbonaceous solid acids bearing –SO₃H groups were prepared from biomass or its isolated polymeric components to catalyze the dehydration of BD to methyl ethyl ketone (MEK) in the liquid phase at low temperatures (<170 °C). Lignocel ...
bioethanol; biomass; biotransformation; ethanol; ethanol production; heat transfer; solid state fermentation; sweet sorghum; temperature
Abstract:
... BACKGROUND: Bioethanol production from biomass is becoming a hot topic internationally. Traditional static solid state fermentation (TS-SSF) for bioethanol production is similar to the traditional method of intermittent operation. The main problems of its large-scale intensive production are the low efficiency of mass and heat transfer and the high ethanol inhibition effect. In order to achieve co ...
... This study investigated a novel pretreatment method, as an essential step, for production of second generation bioethanol from sugarcane bagasse (SCB). Effect of tween 80 (TW) and polyethylene glycol 4000 (PEG) on SCB pretreatment was assessed using 1-butyl-3-methyl imidazolium chloride ([BMIM]Cl) as an ionic liquid (IL). Different concentrations of TW and PEG were used to determine the optimum co ...
bioethanol; biomass; capital costs; circular economy; energy; enzymatic hydrolysis; ethanol; feedstocks; fermentation; glucose; hydrolysis; pulp and paper sludge; saccharification; sludge; zero wastes
Abstract:
... A new process for the production of bioethanol from paper mill sludge (PMS) is described in this work. PMS biomass feedstock was processed via the simultaneous saccharification and fermentation (SSF) with and without accelerants. The enzymatic hydrolysis and fermentation were first evaluated, and the energy demand was 2.2 MJ/L of produced ethanol. When the enzymatic hydrolysis and fermentation wer ...
... β-Mannanase is the key enzyme in the hydrolysis of mannan which has been widely applied in diverse industrial fields such as biobleaching pulps, food and feed industry, bioethanol and pharmaceutical applications. In this study, a novel GH5 family β-mannanase gene (LrMan5B) with 381 amino acid residues was identified from Lichtheimia ramosa, and highly expressed in Pichia pastoris X33. The amino ac ...
... The increasing consumption of fossil fuels has led to the development of alternative fuels for the future. Domestic biofuel production and the utilization of alternative fuels can decrease dependency on petroleum oil, reduce trade deficits, reduce air pollution and reduce carbon dioxide emission. Bioethanol is a renewable fuel produced by the fermentation of sugar which is derived from plants such ...
... A multipurpose magnetic nanobiocatalyst is developed by conjugating Pectinex 3XL (a commercial enzyme containing pectinase, xylanase and cellulase activities) on 3-aminopropyl triethoxysilane activated magnetic nanoparticles. The nanobiocatalyst retained 87% of pectinase, 69% of xylanase and 58% of cellulase activity after conjugation on modified nanoparticles as compared to their soluble counterp ...
... Future biorefineries will integrate biomass conversion processes to produce fuels, power, heat and value-added chemicals. Due to its low price and wide distribution, lignocellulosic biomass is expected to play an important role toward this goal. Regarding renewable biofuel production, bioethanol from lignocellulosic feedstocks is considered the most feasible option for fossil fuels replacement sin ...
... First-generation ethanol plants offer successful, commercial-scale bioprocesses that can, at least partially, replace fossil fuels. They can act as platforms to integrate lignocelluloses, wastes and residuals when establishing 2nd generation ethanol. The present review gathers recent insights on the integration of intrinsic and extrinsic substrates into 1st generation ethanol plants, through micro ...
... Sweet sorghum, a C4 plant, is known to be a unique, versatile, and potential energy crop that can be separated into starchy grains, soluble sugar juice, and lignocellulosic biomass. The fermentable sugars in the juice (53–85% sucrose, 9–33% glucose, and 6–21% fructose) can be directly fermented into ethanol. The grain is primarily starch (62–75%), which can be hydrolyzed and fermented into ethanol ...
... Duckweed easily growing in wastewater and absorbing a large amount of nitrogen and phosphorus from wastewater is now being considered as a promising solution to treat eutrophic water. However, if it is not salvaged in time, its rapid accumulation will cause secondary pollution to the water body. Duckweed is rich in protein and starch, but the content of lignin is rather low, making it an ideal bio ...
... As the population is increasing at a rapid pace, we now find ourselves in a position where cities are using a growing amount of renewable energy. Renewable energy is the key to help avert climate change and this approach must be sustainable. At the juncture, this review analyses the potential of wind, biomass and hybrid systems in the field of renewable energy production. Initially, the manuscript ...
bioethanol; biomass; biorefining; climate change; commercialization; ethanol; feedstocks; gasoline; greenhouse gas emissions; greenhouse gases; high-value products; lignocellulose; mineral resources; prices; transportation industry
Abstract:
... The demand for fossil derivate fuels and chemicals has increased, augmenting concerns on climate change, global economic stability, and sustainability on fossil resources. Therefore, the production of fuels and chemicals from alternative and renewable resources has attracted considerable and growing attention. Ethanol is a promising biofuel that can reduce the consumption of gasoline in the transp ...
Dulce María Arias; Edwin Ortíz-Sánchez; Patrick U. Okoye; Hector Rodríguez-Rangel; A. Balbuena Ortega; Adriana Longoria; Ruth Domínguez-Espíndola; P.J. Sebastian
... Cyanobacterial biomass has constituted a crucial third and fourth-generation biofuel material, with great potential to synthesize a wide range of metabolites, mainly carbohydrates. Lately, carbohydrate-based biofuels from cyanobacteria, such as bioethanol, biohydrogen, and biobutanol, have attracted attention as a sustainable alternative to petroleum-based products. Cyanobacteria can perform a sim ...