scholarly journals Economic analysis and technicalities of acrylic acid production from crude glycerol

2020 ◽  
Vol 26 (1) ◽  
pp. 59-69
Author(s):  
Eduardo Braga ◽  
George Mustafa ◽  
Danilo Pontes ◽  
Luiz Pontes
Keyword(s):  
Acrylic Acid ◽  
Crude Glycerol ◽  
Tax Incentives ◽  
Industrial Applications ◽  
Single Step ◽  
Biofuel Production ◽  
Green Technologies ◽  
New Process ◽  
Removal Of Impurities ◽  
Oxidative Dehydration

Glycerol is the main byproduct of industrial biodiesel plants, and new technological routes using it as feedstock have been studied, due to the increase in world biofuel production. One of the possible applications is in the production of acrylic acid, a product with several industrial applications. This study analyzed a new process of converting crude glycerol, through purification for the removal of impurities, followed by oxidative dehydration reaction in a single step and purification until glacial acrylic acid specification standards are met. It was attested that the process is economically viable, with a payback period of 5 years for an NPV/Investment greater or equal to 2 and an IRR greater or equal to 10% per annum, or 4 years in case tax incentives offered for the development of green technologies.

P. vortex-mediated strategies for polysaccharides decomposition

TECHNOLOGY ◽  
2015 ◽  
Vol 03 (02n03) ◽  
pp. 80-83
Author(s):  
Mark Polikovsky ◽  
Eshel Ben-Jacob ◽  
Alin Finkelshtein
Keyword(s):  
Degradation Products ◽  
Cellulose Degradation ◽  
Cellulose Hydrolysis ◽  
Industrial Applications ◽  
Biofuel Production ◽  
E Coli ◽  
Novel Approach ◽  
Textile Manufacture ◽  
Hydrolysis Of Cellulose ◽  
The Relationship

Cellulose hydrolysis has many industrial applications such as biofuel production, food, paper and textile manufacture. Here, we present a novel approach to cellulose hydrolysis using a consortium of motile bacteria, Paenibacillus vortex, that can swarm on solid medium carrying a non-motile recombinant E. coli cargo strain expressing the β-glucosidase and cellulase genes that facilitate the hydrolysis of cellulose. These two species cooperate; the relationship is mutually beneficial: the E. coli is dispersed over long distances, while the P. vortex bacteria gain from the supply of cellulose degradation products. This enables the use of such consortia in this area of biotechnology.

scholarly journals Skew Rolling of Rods from Scrap Rail Heads

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2970 ◽  
Author(s):  
Tomczak ◽  
Pater ◽  
Bulzak
Keyword(s):  
Experimental Tests ◽  
Rolling Process ◽  
Industrial Applications ◽  
Experimental Investigations ◽  
Longitudinal Rolling ◽  
Rolling Mills ◽  
Second Stage ◽  
New Process ◽  
Skew Rolling ◽  
Theoretical Considerations

This paper presents the results of theoretical and experimental investigations of a new process of rolling rods from scrap rail heads. First, the industrial applications of scrap railway rails and methods of their recycling are discussed, and then the concept of two-stage rolling of rods from heads cut off from scrap rails is proposed. In the first stage of the process, a rail head preform was rolled in a hexagonal pass of a longitudinal rolling mill. Then in the second stage, the hexagonal bar was skew rolled into a rod in a helical roll pass. Theoretical considerations were based on finite element numerical modelling. The rolling process was simulated under 3D deformation using Forge NxT v.1.1 software developed by Transvalor Company. Calculations were carried out to determine the material flow kinematics, strength, and thermal parameters of the process and to identify the phenomena that might constrain its implementation. The numerical results were verified in experimental tests, during which preforms and rods were formed from scrap rail heads. The tests were conducted in longitudinal and skew rolling mills. The results indicate that rods can be effectively formed from scrap rail heads in just two steps. Rods obtained using the proposed method can be used as full-featured, semifinished products for the manufacture of various types of machine parts.

scholarly journals Production of alpha-amylase from Aspergillus oryzae for several industrial applications in a single step

2016 ◽  
Vol 1022 ◽  
pp. 87-92 ◽  
Author(s):  
María C. Porfirif ◽  
Esteban J. Milatich ◽  
Beatriz M. Farruggia ◽  
Diana Romanini
Keyword(s):  
Aspergillus Oryzae ◽  
Industrial Applications ◽  
Single Step ◽  
Alpha Amylase

scholarly journals Microalgal Enzymes with Biotechnological Applications

Marine Drugs ◽  
2019 ◽  
Vol 17 (8) ◽  
pp. 459 ◽  
Author(s):  
Giorgio Maria Vingiani ◽  
Pasquale De Luca ◽  
Adrianna Ianora ◽  
Alan D.W. Dobson ◽  
Chiara Lauritano
Keyword(s):  
State Of The Art ◽  
Industrial Applications ◽  
Biofuel Production ◽  
Biotechnological Applications ◽  
Efficient Manner ◽  
Environmentally Sustainable ◽  
Essential Components ◽  
Cost Efficient ◽  
Number Of Publications

Enzymes are essential components of biological reactions and play important roles in the scaling and optimization of many industrial processes. Due to the growing commercial demand for new and more efficient enzymes to help further optimize these processes, many studies are now focusing their attention on more renewable and environmentally sustainable sources for the production of these enzymes. Microalgae are very promising from this perspective since they can be cultivated in photobioreactors, allowing the production of high biomass levels in a cost-efficient manner. This is reflected in the increased number of publications in this area, especially in the use of microalgae as a source of novel enzymes. In particular, various microalgal enzymes with different industrial applications (e.g., lipids and biofuel production, healthcare, and bioremediation) have been studied to date, and the modification of enzymatic sequences involved in lipid and carotenoid production has resulted in promising results. However, the entire biosynthetic pathways/systems leading to synthesis of potentially important bioactive compounds have in many cases yet to be fully characterized (e.g., for the synthesis of polyketides). Nonetheless, with recent advances in microalgal genomics and transcriptomic approaches, it is becoming easier to identify sequences encoding targeted enzymes, increasing the likelihood of the identification, heterologous expression, and characterization of these enzymes of interest. This review provides an overview of the state of the art in marine and freshwater microalgal enzymes with potential biotechnological applications and provides future perspectives for this field.

A new process for acrylic acid synthesis by fermentative process

2007 ◽  
Vol 137-140 (1-12) ◽  
pp. 487-499 ◽  
Author(s):  
B. H. Lunelli ◽  
E. R. Duarte ◽  
E. C. Vasco de Toledo ◽  
M. R. Wolf Maciel ◽  
R. Maciel Filho
Keyword(s):  
Acrylic Acid ◽  
Acid Synthesis ◽  
New Process ◽  
Fermentative Process

scholarly journals Oxidative dehydration of glycerol to acrylic acid over vanadium-impregnated zeolite beta

2013 ◽  
Vol 24 (1) ◽  
pp. 100-105 ◽  
Author(s):  
Carolina F. M. Pestana ◽  
Antônio C. O. Guerra ◽  
Glaucio B. Ferreira ◽  
Cássia C. Turci ◽  
Claudio J. A. Mota
Keyword(s):  
Acrylic Acid ◽  
Zeolite Beta ◽  
Oxidative Dehydration

scholarly journals Oxidative dehydration reaction of glycerol into acrylic acid: A first-principles prediction of structural and thermodynamic parameters of a bifunctional catalyst

2016 ◽  
Vol 651 ◽  
pp. 161-167 ◽  
Author(s):  
Lívia Clara T. Lacerda ◽  
Maíra dos Santos Pires ◽  
Silviana Corrêa ◽  
Luiz Carlos A. Oliveira ◽  
Teodorico C. Ramalho
Keyword(s):  
Acrylic Acid ◽  
Thermodynamic Parameters ◽  
First Principles ◽  
Bifunctional Catalyst ◽  
Dehydration Reaction ◽  
Oxidative Dehydration

scholarly journals Microbial Cellulases and Their Industrial Applications

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Ramesh Chander Kuhad ◽  
Rishi Gupta ◽  
Ajay Singh
Keyword(s):  
Current Knowledge ◽  
Enzyme System ◽  
Cellulase Production ◽  
Industrial Applications ◽  
Biofuel Production ◽  
Potential Candidate ◽  
Research Groups ◽  
Process Economics ◽  
Food And Feed ◽  
Technological Developments

Microbial cellulases have shown their potential application in various industries including pulp and paper, textile, laundry, biofuel production, food and feed industry, brewing, and agriculture. Due to the complexity of enzyme system and immense industrial potential, cellulases have been a potential candidate for research by both the academic and industrial research groups. Nowadays, significant attentions have been devoted to the current knowledge of cellulase production and the challenges in cellulase research especially in the direction of improving the process economics of various industries. Scientific and technological developments and the future prospects for application of cellulases in different industries are discussed in this paper.

scholarly journals The Role of Synthetic Biology in the Design of Microbial Cell Factories for Biofuel Production

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Verónica Leticia Colin ◽  
Analía Rodríguez ◽  
Héctor Antonio Cristóbal
Keyword(s):  
Synthetic Biology ◽  
Industrial Applications ◽  
Microbial Cell ◽  
Biodiesel Production ◽  
Biofuel Production ◽  
Attractive Alternative ◽  
Efficient Production ◽  
Microbial Cell Factories ◽  
Cell Factories

Insecurity in the supply of fossil fuels, volatile fuel prices, and major concerns regarding climate change have sparked renewed interest in the production of fuels from renewable resources. Because of this, the use of biodiesel has grown dramatically during the last few years and is expected to increase even further in the future. Biodiesel production through the use of microbial systems has marked a turning point in the field of biofuels since it is emerging as an attractive alternative to conventional technology. Recent progress in synthetic biology has accelerated the ability to analyze, construct, and/or redesign microbial metabolic pathways with unprecedented precision, in order to permit biofuel production that is amenable to industrial applications. The review presented here focuses specifically on the role of synthetic biology in the design of microbial cell factories for efficient production of biodiesel.

scholarly journals Yeast Surface Display of Trifunctional Minicellulosomes for Simultaneous Saccharification and Fermentation of Cellulose to Ethanol

2009 ◽  
Vol 76 (4) ◽  
pp. 1251-1260 ◽  
Author(s):  
Fei Wen ◽  
Jie Sun ◽  
Huimin Zhao
Keyword(s):  
Cell Surface ◽  
Consolidated Bioprocessing ◽  
Surface Display ◽  
Cellulose Hydrolysis ◽  
Cellulase Production ◽  
Single Step ◽  
Yeast Surface Display ◽  
Biofuel Production ◽  
Yeast Cells ◽  
Recombinant Yeast Strain

ABSTRACT By combining cellulase production, cellulose hydrolysis, and sugar fermentation into a single step, consolidated bioprocessing (CBP) represents a promising technology for biofuel production. Here we report engineering of Saccharomyces cerevisiae strains displaying a series of uni-, bi-, and trifunctional minicellulosomes. These minicellulosomes consist of (i) a miniscaffoldin containing a cellulose-binding domain and three cohesin modules, which was tethered to the cell surface through the yeast a-agglutinin adhesion receptor, and (ii) up to three types of cellulases, an endoglucanase, a cellobiohydrolase, and a β-glucosidase, each bearing a C-terminal dockerin. Cell surface assembly of the minicellulosomes was dependent on expression of the miniscaffoldin, indicating that formation of the complex was dictated by the high-affinity interactions between cohesins and dockerins. Compared to the unifunctional and bifunctional minicellulosomes, the quaternary trifunctional complexes showed enhanced enzyme-enzyme synergy and enzyme proximity synergy. More importantly, surface display of the trifunctional minicellulosomes gave yeast cells the ability to simultaneously break down and ferment phosphoric acid-swollen cellulose to ethanol with a titer of ∼1.8 g/liter. To our knowledge, this is the first report of a recombinant yeast strain capable of producing cell-associated trifunctional minicellulosomes. The strain reported here represents a useful engineering platform for developing CBP-enabling microorganisms and elucidating principles of cellulosome construction and mode of action.

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