Applying PBL methodologies to the chemical engineering courses: Unit operations and modeling and simulation, using a joint course project

2019 ◽  
Vol 27 ◽  
pp. 35-42 ◽  
Author(s):  
Miguel A. Ballesteros ◽  
Miguel A. Daza ◽  
Juan P. Valdés ◽  
Nicolás Ratkovich ◽  
Luis H. Reyes
Keyword(s):  
Modeling And Simulation ◽  
Chemical Engineering ◽  
Unit Operations

scholarly journals Sequencing of unit operations for integral and sustainable peanut processing

2020 ◽  
Vol 9 (6) ◽  
pp. e67963449
Author(s):  
Bianca Guimarães ◽  
Jéssica Terra Teodoro Silva ◽  
Kássia Graciele Santos ◽  
José Luiz Vieira Neto
Keyword(s):  
Solar Energy ◽  
Chemical Engineering ◽  
Sustainable Use ◽  
Fixed Bed ◽  
Analysis Data ◽  
Fine Coal ◽  
Unit Operations ◽  
Ecological Relationship ◽  
Immediate Analysis ◽  
Drying Efficiency

The most used biomass are wood, sugar cane, paper, rice husk, and peanut. Based on the concept of sustainability and waste reduction, the full utilization of biomass is an alternative capable of providing people with a better nutritional intake, improving the economy related to biomass and the ecological relationship between man and the environment. So, the aim of this work was the sustainable use the biomass, the peanut, through multiple unit operations. Thus, the material went through several processes as the grinding process, where it was possible to obtain immediate analysis data (moisture content, ash content, volatile content and fixed carbon) and particle size. Then, drying was performed employing solar energy and the drying efficiency was obtained. Infrared and greenhouse tests were performed in the laboratory to determine the drying and humidity curves. After drying, it was also carried out the oil extraction using ethanol as solvent heated by solar energy. After that, the residual cake was used as the adsorbent material in the dye removal by adsorption in a fixed bed. So, the dye-impregnated adsorbent has undergone a process of pyrolysis in order to form fine coal, bio-oil, and gases. With products and by-products of each process, it was possible to generate the infrared spectrum of each. Therefore, it is shown how the integral use of peanut as biomass is possible, using chemical engineering sustainable processes, and how it may contribute to the reduction of the pollution and to the reduction of waste production.

scholarly journals An Overview of Difficulties in Controlling Intensified Process

2007 ◽  
Vol 7 (1 & 2) ◽  
pp. 8
Author(s):  
Reza Barzin ◽  
Syamsul Rizal Abd Shukor ◽  
Abdul Latif Ahmad
Keyword(s):  
Chemical Engineering ◽  
Process Intensification ◽  
Dynamic Interaction ◽  
Engineering Industry ◽  
Chemical Plants ◽  
Control Loop ◽  
Process Technology ◽  
Unit Operations ◽  
Potential Problems ◽  
Production Objectives

Process intensification (PI) is currently one of the most significant trends in chemical engineering and process technology. PI is a strategy of making dramatic reductions in the size of unit operations within chemical plants, in order to achieve production objectives. PI technology is able to change dramatically the whole chemical engineering industry pathway to a faster, cleaner and safer industry. Nonetheless, PI technology will be handicapped if such system is not properly controlled. There are some foreseeable problems in order to control such processes for instance, dynamic interaction between components that make up a control loop, response time of the instrumentations, availability of proper sensor and etc. This paper offers an overview and discussion on identifying potential problems of controlling intensified systems.

Biomolecular Systems Engineering: Unlocking the Potential of Engineered Allostery via the Lactose Repressor Topology

2021 ◽  
Vol 50 (1) ◽  
Author(s):  
Thomas M. Groseclose ◽  
Ronald E. Rondon ◽  
Ashley N. Hersey ◽  
Prasaad T. Milner ◽  
Dowan Kim ◽  
...  
Keyword(s):  
Synthetic Biology ◽  
Systems Engineering ◽  
Gene Networks ◽  
Chemical Engineering ◽  
Publication Date ◽  
Biomolecular Systems ◽  
Lactose Repressor ◽  
Unit Operations ◽  
Allosteric Communication ◽  
Logical Operations

Allosteric function is a critical component of many of the parts used to construct gene networks throughout synthetic biology. In this review, we discuss an emerging field of research and education, biomolecular systems engineering, that expands on the synthetic biology edifice—integrating workflows and strategies from protein engineering, chemical engineering, electrical engineering, and computer science principles. We focus on the role of engineered allosteric communication as it relates to transcriptional gene regulators—i.e., transcription factors and corresponding unit operations. In this review, we ( a) explore allosteric communication in the lactose repressor LacI topology, ( b) demonstrate how to leverage this understanding of allostery in the LacI system to engineer non-natural BUFFER and NOT logical operations, ( c) illustrate how engineering workflows can be used to confer alternate allosteric functions in disparate systems that share the LacI topology, and ( d) demonstrate how fundamental unit operations can be directed to form combinational logical operations. Expected final online publication date for the Annual Review of Biophysics, Volume 50 is May 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

scholarly journals The Virtual Chemical Engineering Unit Operations Laboratory

2020 ◽  
Author(s):  
William Lan ◽  
Karlene Hoo ◽  
Jason Williams ◽  
Harry Parker ◽  
Charles Smith ◽  
...  
Keyword(s):  
Chemical Engineering ◽  
Unit Operations
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