biodiesel by-product Articles
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Biodiesel production by microalgae cultivated using permeate from membrane bioreactors in continuous system
Microalgae in three submerged ceramic membrane photobioreactors (SCMPBRs) with different hydraulic retention times (HRTs) were fed with permeate of a submerged ceramic membrane bioreactor for a period of 3 months to investigate the lipid content and also the biodiesel quality produced at different HRTs. The lipid content, lipid productivity and fatty acid compositions for all three SCMPBRs were ...
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Sustainability assessment of microalgal biodiesel production processes: an exergetic analysis approach with Aspen Plus
Biodiesel production growth rate keeps increasing every year with the hope of replacing fossil based liquid fuel which is near exhaustion. Energy efficiency methods coupled with environmental and economic sustainabilities would render biodiesel production attractive. Algal cultivation and oil extraction processes are found to be energy intensive hence exergy destructive. This study presents the ...
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GHG balance of biodiesel production and consumption in EU
The promotion of biofuels as energy for transportation in the industrialised countries is mainly driven by the perspective of oil depletion, concerns about energy security and global warming. Nevertheless, the production of biofuels entails emissions to the environment coming from the different stages in the product life cycle. This paper evaluates the environmental impact of pure rapeseed ...
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Value stream mapping based on energy and cost system for biodiesel production
Organisations have to give more attention to customer demands for survival and also for increasing their market shares. But customers' demands are not stable. The main problem of all organisations is how to cut costs during production process. The solution to this problem is built up with lean–based production systems. Value stream mapping identifies those areas where unwanted productivity is ...
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Energy analysis and potentials of biodiesel production from Jatropha Curcas in Tunisia
Oleaginous plants such as Jatropha Curcas Linnaeus (JCL), not intended for human consumption but used for biodiesel production, could contribute to beneficial outcomes. This plant grows on poor land (arid and marginal land) and is drought resistant. Jatropha Curcas is native to South America and widely grown in South and Central America, Africa, and Asia (Achten et al., 2007; Kumar et al., 2011). ...
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Senate passes bill extending energy tax credits
On July 21, 2015, the Senate Finance Committee voted to pass a $96 billion package of tax extenders. The tax credits in the package include Individual Tax Extenders, Business Tax Extenders, and $16.4 billion in Energy Tax Extenders. The wind production tax credit, a $1.01 per-gallon production credit for second generation biofuels, energy efficiency credits, and a renewable electricity production ...
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China biodiesel industry encourages foreign investments
On January 23, 2015, China's National Energy Administration issued a biodiesel industry development plan (available in Chinese) to improve the biodiesel sector. The plan encouraged the production of cleaner fuels as well as the use of renewable fuels by promoting foreign companies' participation in the industry; mergers, acquisitions, and restructuring of domestic biodiesel companies; and fuel ...
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Microtox aquatic toxicity of petrodiesel and biodiesel blends: The role of biodiesel's autoxidation products
The authors investigated the acute Microtox toxicity of the water accommodated fraction (WAF) of six commercial soybean biodiesel/petrodiesel blends at different oil loads. We analyzed five fatty acid methyl esters (FAMEs), C10–C24 n‐alkanes, four aromatics, methanol, and total organic carbon (TOC) content. At high oil loads, the WAFs' toxicity was significantly higher for blends containing ...
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Graphical exergy analysis of reactive distillation column for biodiesel production
This paper brings the novelty of the exergy analysis technique using Ex–N–A diagram to a packed reactive distillation (RD) column for biodiesel production. In this study, biodiesel is produced through the esterification of fatty acid with methanol. The simulation of the column was performed based on the non–equilibrium (NEQ) model of a three–phase packed RD system. The graphical Ex–N–A method was ...
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Sustainability evaluation of the national programme of biodiesel use and production: comparative analysis: Quixadá Hub (Ceará) and Central Hub (Rio Grande do Sul)
This article analysed the conditioners of sustainability that can be related to family farmers involved in the production of raw material for the Brazil's National Programme for Biodiesel Use and Production (PNBP) in the Quixadá Hub (Ceará) and in the Central Hub (Rio Grande do Sul). The PNPB, officially launched in Brazil in 2004 with the goals of building a sustainable programme, fostering ...
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Development and measured performance of a batch reactor for biodiesel production from fresh and waste vegetable oils
The development and measured performance of a batch reactor for biodiesel production from fresh and waste vegetable oils as feedstock is presented. A biodiesel batch reactor was fabricated using locally sourced materials. Three different transesterification reactions were performed on the feedstocks using the fabricated reactor. The reaction temperature and time were varied for the fresh and ...
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Anaerobic treatment of crude glycerol from biodiesel production
In this study, we evaluated the use of an up-flow anaerobic sludge blanket (UASB) reactor to treat crude glycerol obtained from cottonseed biodiesel production. The laboratory-scale UASB reactor (7.0 L) was operated at ambient temperature of 26.5°C with chemical oxygen demand (COD) concentrations between 0.5 and 8.0 g/L. The volatile fatty acid contents, pH, inorganic salt contents and biogas ...
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A Fully Integrated Process for Biodiesel Production from Microalgae in Saline Water
This project will demonstrate the technical and economic feasibility of an integrated process for the production of microalgal oils that are suitable as a feedstock for biodiesel production. A preliminary economic feasibility study and assessment of total greenhouse gas emissions (GHG) would be carried out based on the results of small-scale studies and, if successful, would be followed by a ...
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Tom Vilsack Responds To Studies On Evolution Of Ethanol Production
On February 16, 2016, Agriculture Secretary Tom Vilsack responded to two recent reports on ethanol and renewable fuels. The first report was published by USDA and is on "2015 Energy Balance for the Corn-Ethanol Industry," and the second report comes from the University of Missouri Food and Agricultural Policy Research Institute (FAPRI) and is a "Literature Review of Estimated Market Effects of ...
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Top Products - Avoiding Explosions in the Chemical Industry With Nitrogen
High-Purity Raw Materials from the By-Products of Biodiesel Production Producing diesel from plant-based raw materials creates unwanted by-products. Glaconchemie takes such by-products off of biodiesel manufacturers’ hands and uses them to develop high-purity raw materials. Glaconchemie uses self-produced nitrogen to overlay the production steps during further processing. In Germany, ...
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New Feedstock Options and Trends Boost Biodiesel Production
Special to The Digest In the United States, efforts to replace fossil fuels with biofuels are gaining momentum, supported by growing public awareness, government programs and emerging waste-to-fuel technologies. The Environmental Protection Agency’s (EPA) analysis of the Renewable Fuel Standard (RFS) projected that several types of biofuels, such as biodiesel, could yield lower ...
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Process optimisation of base catalysed transesterification of Karanja oil for biodiesel production
Biodiesel has been receiving increasing attention due to its renewable nature, lower pollution potential and green house gas benefit compared to mineral diesel. There are numerous factors, which affect the yield of biodiesel in a transesterification process such as reaction temperature, molar ratio of alcohol to oil, catalyst concentration, stirring speed, reaction time, etc. These variables are ...
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The impact of biodiesel policy over raw material acquisition: a study about Brazilian Biodiesel National Programme
The aim of this article is to highlight and discuss the impacts of National Programme for Production and Use of Biodiesel - PNPB. This programme has some unique characteristics such as the incentive to social inclusion and local development by family farmers inclusion as oilseeds suppliers of biodiesel production, in this sense this study focus on biodiesel producer acquisition of raw material ...
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Sustainable development with renewable energy resources: a review
The most visible effects of the sustainable development movement are found in several global issues such as the greenhouse effect, stratospheric ozone depletion, and loss of biodiversity. Combustion of fossil fuels and global warming are closely associated with each other. There is an urgent need to replace fossil fuels to renewable energy sources. Renewable energy is one of the few means by ...
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Water-saving analysis on an effective water reuse system in biodiesel feedstock production based on
Chlorella zofingiensis fed-batch cultivationThe micralgae-based biofuel obtained from dairy wastewater (DWW) is considered a promising source of energy. However, this process consumes water due to the concentration of wastewater being normally too high for some micoralgae cultivation, and dilution is always needed. In this work, the cultivation of microalgae has been examined in non-recirculated water (NR) and recirculated water systems ...
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