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https://www.readbyqxmd.com/read/28091679/sustainability-of-renewable-fuel-infrastructure-a-screening-lca-case-study-of-anticorrosive-graphene-oxide-epoxy-liners-in-steel-tanks-for-the-storage-of-biodiesel-and-its-blends
#1
Govinda Chilkoor, Venkata K K Upadhyayula, Venkataramana Gadhamshetty, Nikhil Koratkar, Mats Tysklind
Biodiesel is a widely used fuel that meets the renewable fuel standards developed under the Energy Policy Act of 2005. However, biodiesel is known to pose a series of abiotic and biotic corrosion risks to storage tanks. A typical practice (incumbent system) used to protect the tanks from these risks include (i) coating the interior surface of the tank with a solvent-free epoxy (SFE) liner, and (ii) adding a biocide to the tank. Herein, we present a screening-level life-cycle assessment study to compare the environmental performance of a graphene oxide (GO)-epoxy (GOE) liner with the incumbent system...
January 16, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/28089136/recent-insights-into-biohydrogen-production-by-microalgae-from-biophotolysis-to-dark-fermentation
#2
REVIEW
Dillirani Nagarajan, Duu-Jong Lee, Akihiko Kondo, Jo-Shu Chang
One of the best options to alleviate the problems associated with global warming and climate change is to reduce burning of fossil fuels and search for new alternative energy resources. In case of biodiesel and bioethanol production, the choice of feedstock and the process design influences the GHG emissions and appropriate methods need to be adapted. Hydrogen is a zero-carbon and energy dense alternative energy carrier with clean burning properties and biohydrogen production by microalgae can reduce production associated GHG emissions to a great extent...
December 30, 2016: Bioresource Technology
https://www.readbyqxmd.com/read/28081386/effects-of-biodiesel-made-from-swine-and-chicken-fat-residues-on-co-co2-and-nox-emissions
#3
Vivian Feddern, Anildo Cunha Junior, Marina C De Prá, Marcio L Busi da Silva, Rodrigo da S Nicoloso, Martha M Higarashi, Arlei Coldebella, Paulo G de Abreu
Implications Emissions from motor vehicles can contribute considerably to the levels of greenhouse gases in the atmosphere. The use of biodiesel to replace or augment diesel can not only decrease our dependency on fossil fuels but also help decrease air pollution. Thus, different sources of feedstocks are constantly being explored for affordable biodiesel production. However, the amount of CO, CO2 and/or NOx emissions can vary largely depending on type of feedstock used to produce biodiesel. In this work we demonstrated animal fat feasibility in replacing petrodiesel with less impact regarding greenhouse gas emissions than other sources...
January 12, 2017: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/28078395/high-production-of-2-3-butanediol-from-glycerol-without-1-3-propanediol-formation-by-raoultella-ornithinolytica-b6
#4
Taeyeon Kim, Sukhyeong Cho, Han Min Woo, Sun-Mi Lee, Jinwon Lee, Youngsoon Um, Jin-Ho Seo
Conversion of crude glycerol derived from biodiesel processes to value-added chemicals has attracted much attention. Herein, Raoultella ornithinolytica B6 was investigated for the high production of 2,3-butanediol (2,3-BD) from glycerol without 1,3-propanediol (1,3-PD) formation, a by-product hindering 2,3-BD purification. By evaluating the effects of temperature, agitation speed, and pH control strategy, the fermentation conditions favoring 2,3-BD production were found to be 25 °C, 400 rpm, and pH control with a lower limit of 5...
January 11, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28071047/linking-load-fuel-and-emission-controls-to-photochemical-production-of-secondary-organic-aerosol-from-a-diesel-engine
#5
Shantanu H Jathar, Beth Friedman, Abril A Galang, Michael F Link, Patrick Brophy, John Volckens, Sailaja Eluri, Delphine K Farmer
Diesel engines are important sources of fine particle pollution in urban environments but their contribution to the atmospheric formation of secondary organic aerosol (SOA) is not well constrained. We investigated direct emissions of primary organic aerosol (POA) and photochemical production of SOA from a diesel engine using an oxidation flow reactor (OFR). In less than a day of simulated atmospheric aging, SOA production exceeded POA emissions by an order of magnitude or more. Efficient combustion at higher engine loads coupled to the removal of SOA precursors and particle emissions by aftertreatment systems reduced POA emission factors by an order of magnitude and SOA production factors by factors of 2-10...
January 10, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28069215/intensification-of-esterification-of-non-edible-oil-as-sustainable-feedstock-using-cavitational-reactors
#6
Ashish V Mohod, Abhijeet S Subudhi, Parag R Gogate
Using sustainable feed stock such as non-edible oil for the biodiesel production can be one of the cost effective approaches considering the ever growing interest towards renewable energy and problems in existing approaches for production. However, due to the high free fatty acid content, non-edible oils require considerable preprocessing before the actual transesterification reaction for biodiesel production. The present work focuses on intensification of the esterification reaction used as preprocessing step based on acoustic and hydrodynamic cavitation also presenting the comparison with the conventional approach...
May 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28068642/optimization-of-photocatalytic-degradation-of-biodiesel-using-tio2-h2o2-by-experimental-design
#7
Elizangela Ambrosio, Diego L Lucca, Maicon H B Garcia, Maísa T F de Souza, Thábata K F de S Freitas, Renata P de Souza, Jesuí V Visentainer, Juliana C Garcia
This study reports on the investigation of the photodegradation of biodiesel (B100) in contact with water using TiO2/H2O2. The TiO2 was characterized by X-ray diffraction analysis (XRD), pH point of zero charge (pHpzc) and textural analysis. The results of the experiments were fitted to a quadratic polynomial model developed using response surface methodology (RSM) to optimize the parameters. Using the three factors, three levels, and the Box-Behnken design of experiment technique, 15 sets of experiments were designed considering the effective ranges of the influential parameters...
January 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28064394/sacrificial-photocatalysis-removal-of-nitrate-and-hydrogen-production-by-nano-copper-loaded-p25-titania-a-kinetic-and-ecotoxicological-assessment
#8
Roberta Lucchetti, Antonietta Siciliano, Laura Clarizia, Danilo Russo, Ilaria Di Somma, Francesco Di Natale, Marco Guida, Roberto Andreozzi, Raffaele Marotta
The photocatalytic removal of nitrate with simultaneous hydrogen generation was demonstrated using zero-valent nano-copper-modified titania (P25) as photocatalyst in the presence of UV-A-Vis radiation. Glycerol, a by-product in biodiesel production, was chosen as a hole scavenger. Under the adopted experimental conditions, a nitrate removal efficiency up to 100% and a simultaneous hydrogen production up to 14 μmol/L of H2 were achieved (catalyst load = 150 mg/L, initial concentration of nitrate = 50 mg/L, initial concentration of glycerol = 0...
January 7, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28061931/synergistic-effect-of-hormones-and-biosolids-on-scenedesmus-abundans-for-eliciting-total-biolipids
#9
Chelladurai Chellamboli, Muthiah Perumalsamy
  This study states an integrated approach to grow Scenedesmus abundans in the presence of biostimulants as a robust flourishing organism pertaining to attain the maximum yield of the biodiesel through transesterification. These assessments are especially targeted to achieve the appreciable profit on biodiesel using three biostimulants such as, Indole 3-acetic acid (3 IAA), 6-Benzylaminopurine (6 BAP), and Gibberellic acid (GA) hormones. The proposed schema proved a rise in biomass; as well as lipid content, compared with an alga grown in the absence of hormones...
December 1, 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/28053667/the-sole-introduction-of-two-single-point-mutations-establishes-glycerol-utilization-in-saccharomyces-cerevisiae-cen-pk-derivatives
#10
Ping-Wei Ho, Steve Swinnen, Jorge Duitama, Elke Nevoigt
BACKGROUND: Glycerol is an abundant by-product of biodiesel production and has several advantages as a substrate in biotechnological applications. Unfortunately, the popular production host Saccharomyces cerevisiae can barely metabolize glycerol by nature. RESULTS: In this study, two evolved derivatives of the strain CEN.PK113-1A were created that were able to grow in synthetic glycerol medium (strains PW-1 and PW-2). Their growth performances on glycerol were compared with that of the previously published evolved CEN...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28045608/comparison-of-different-artificial-neural-network-ann-architectures-in-modeling-of-chlorella-sp-flocculation
#11
Alireza Moosavi Zenooz, Farzin Zokaee Ashtiani, Reza Ranjbar, Fatemeh Nikbakht, Oberon Bolouri
Biodiesel production from microalgae feedstock should be performed after growth and harvesting of the cells and the most feasible method for harvesting and dewatering of microalgae is flocculation. Flocculation modeling can be used for evaluation and prediction of its performance under different affective parameters. However, the modeling of flocculation in microalgae is not simple and has not performed yet, under all experimental conditions, mostly due to different behaviors of microalgae cells during the process under different flocculation conditions...
January 3, 2017: Preparative Biochemistry & Biotechnology
https://www.readbyqxmd.com/read/28045504/will-aerosol-hygroscopicity-change-with-biodiesel-renewable-diesel-fuels-and-emission-control-technologies
#12
Diep Vu, Daniel Z Short, Georgios Karavalakis, Thomas D Durbin, Akua Asa-Awuku
The use of biodiesel and renewable diesel fuels in compression ignition engines and aftertreatment technologies may affect vehicle exhaust emissions. In this study two 2012 light-duty vehicles equipped with direct injection diesel engines, diesel oxidation catalyst (DOC), diesel particulate filter (DPF), and selective catalytic reduction (SCR) were tested on a chassis dynamometer. One vehicle was tested over the Federal Test Procedure (FTP) cycle on seven biodiesel and renewable diesel fuel blends. Both vehicles were exercised over double Environmental Protection Agency (EPA) Highway fuel economy test (HWFET) cycles on ultra-low sulfur diesel (ULSD) and a soy-based biodiesel blend to investigate the aerosol hygroscopicity during the regeneration of the DPF...
January 3, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28045437/microalgal-cultivation-in-secondary-effluent-recent-developments-and-future-work
#13
REVIEW
Junping Lv, Jia Feng, Qi Liu, Shulian Xie
Eutrophication of water catchments and the greenhouse effect are major challenges in developing the global economy in the near future. Secondary effluents, containing high amounts of nitrogen and phosphorus, need further treatment before being discharged into receiving water bodies. At the same time, new environmentally friendly energy sources need to be developed. Integrating microalgal cultivation for the production of biodiesel feedstock with the treatment of secondary effluent is one way of addressing both issues...
January 1, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28040869/metabolic-engineering-of-klebsiella-pneumoniae-based-on-in-silico-analysis-and-its-pilot-scale-application-for-1-3-propanediol-and-2-3-butanediol-co-production
#14
Jong Myoung Park, Chelladurai Rathnasingh, Hyohak Song
Klebsiella pneumoniae naturally produces relatively large amounts of 1,3-propanediol (1,3-PD) and 2,3-butanediol (2,3-BD) along with various byproducts using glycerol as a carbon source. The ldhA and mdh genes in K. pneumoniae were deleted based on its in silico gene knockout simulation with the criteria of maximizing 1,3-PD and 2,3-BD production and minimizing byproducts formation and cell growth retardation. In addition, the agitation speed, which is known to strongly affect 1,3-PD and 2,3-BD production in Klebsiella strains, was optimized...
December 31, 2016: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28039846/fluorescent-fingerprints-of-edible-oils-and-biodiesel-by-means-total-synchronous-fluorescence-and-tucker3-modeling
#15
Matías Insausti, Adriano de Araújo Gomes, José Manuel Camiña, Mario Cesar Ugulino de Araújo, Beatriz Susana Fernández Band
The present work proposes the use of total synchronous fluorescence spectroscopy (TSFS) as a discrimination methodology for fluorescent compounds in edible oils, which are preserved after the transesterification processes in the biodiesel production. In the same way, a similar study is presented to identify fluorophores that do not change in expired vegetal oils, to associate physicochemical parameters to fluorescent measures, as contribution to a fingerprint for increasing the chemical knowledge of these products...
December 28, 2016: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28038398/switching-cultivation-for-enhancing-biomass-and-lipid-production-with-extracellular-polymeric-substance-as-co-products-in-heynigia-riparia-sx01
#16
Guodong Liu, Xiaoling Miao
Switching cultivation (mixotrophic-heterotrophic, 12h:12h) of Heynigia riparia SX01 was studied, the maximum biomass concentration of 3.55gL(-1) and lipid yield of 1.45gL(-1) were achieved after 8days cultivation. The extracellular polymeric substance (EPS) was developed as co-product. Addition of MgSO4 could enhance the production of EPS. The highest amount of 0.60gL(-1) EPS was obtained with the addition of 2gL(-1) MgSO4, the self-flocculation efficiency was as high as 83% at this condition. The total lipid and lipid fractions did not show differences with extra MgSO4...
March 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28033549/combined-iron-and-sulfate-reduction-biostimulation-as-a-novel-approach-to-enhance-btex-and-pah-source-zone-biodegradation-in-biodiesel-blend-contaminated-groundwater
#17
Juliana B Müller, Débora T Ramos, Catherine Larose, Marilda Fernandes, Helen S C Lazzarin, Timothy M Vogel, Henry X Corseuil
The use of biodiesel as a transportation fuel and its growing mandatory blending percentage in diesel increase the likelihood of contaminating groundwater with diesel/biodiesel blends. A 100L-field experiment with B20 (20% biodiesel and 80% diesel, v/v) was conducted to assess the potential for the combined biostimulation of iron and sulfate reducing bacteria to enhance BTEX and PAH biodegradation in a diesel/biodiesel blend-contaminated groundwater. A B20 field experiment under monitored natural attenuation (MNA) was used as a baseline control...
December 5, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28029521/comparison-of-macauba-and-soybean-oils-as-substrates-for-the-enzymatic-biodiesel-production-in-ultrasound-assisted-system
#18
Claudia M T Santin, Simone Michelin, Robison P Scherer, Alexsandra Valério, Marco di Luccio, Débora Oliveira, J Vladimir Oliveira
The objective of this study is to evaluate the batch enzymatic production of biodiesel in solvent-free system under ultrasound using as substrates ethanol, soybean oil and macauba fruit oil. For this purpose, a Plackett & Burman experimental design was carried out for soybean oil while a 2(4-1) design was conducted for macauba oil in order to maximize the biodiesel conversion for each system. Good conversions to fatty acid ethyl esters (FAEE), 88% for soybean oil and 75.2% for macauba oil, was obtained thus demonstrating the potential use of ultrasound for this reaction system...
October 22, 2016: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28017550/a-novel-bioconversion-for-value-added-products-from-food-waste-using-musca-domestica
#19
Yi Niu, Dong Zheng, Binghua Yao, Zizhe Cai, Zhimin Zhao, Shengqing Wu, Peiqing Cong, Depo Yang
Food waste, as a major part of the municipal solid waste has been generated increasingly worldwide. Efficient and feasible utilization of this waste material for productivity process is significant for both economical and environmental reasons. In the present study, Musca domestica larva was used as the carrier to conduct a bioconversion with food waste to get the value-added maggot protein, oil and organic fertilizers. Methods of adult flies rearing, culture medium adjuvant selection, maggot culture conditions, stocking density and the valorization of the waste have been explored...
December 22, 2016: Waste Management
https://www.readbyqxmd.com/read/28005381/molecular-characterization-of-organosulfur-compounds-in-biodiesel-and-diesel-fuel-secondary-organic-aerosol
#20
Sandra L Blair, Amanda C MacMillan, Greg T Drozd, Allen H Goldstein, Rosalie K Chu, Ljiljana Paša-Tolić, Jared B Shaw, Nikola Tolić, Peng Lin, Julia Laskin, Alexander Laskin, Sergey A Nizkorodov
Secondary organic aerosol (SOA), formed in the photooxidation of diesel fuel, biodiesel fuel, and 20% biodiesel fuel/80% diesel fuel mixture, are prepared under high-NOx conditions in the presence and absence of sulfur dioxide (SO2), ammonia (NH3), and relative humidity (RH). The composition of condensed-phase organic compounds in SOA is measured using several complementary techniques including aerosol mass spectrometry (AMS), high-resolution nanospray desorption electrospray ionization mass spectrometry (nano-DESI/HRMS), and ultrahigh resolution and mass accuracy 21T Fourier transform ion cyclotron resonance mass spectrometry (21T FT-ICR MS)...
January 3, 2017: Environmental Science & Technology
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