scholarly journals A Graph-Based Dynamic Modeling for Palm Oil Refining Process

Processes ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 523
Author(s):  
Azmirul Ashaari ◽  
Tahir Ahmad ◽  
Siti Rahmah Awang ◽  
Noorsufia Abd Shukor
Keyword(s):  
Mathematical Modeling ◽  
Dynamic Modeling ◽  
Palm Oil ◽  
Chemical Compounds ◽  
Mathematical Concept ◽  
Refining Process ◽  
Oil Refining ◽  
System Parameters ◽  
In The Beginning ◽  
Mathematical Modeling Technique

Graph theory is a well-established mathematical concept that is widely used in numerous applications such as in biology, chemistry and network analysis. The advancement in the theory of graph has led to the development of a concept called autocatalytic set. In this paper, a mathematical modeling technique namely graph-based dynamic modeling of palm oil refining process is introduced. The system parameters are identified in detail in the beginning of the paper. The parameters involved are the chemical compounds used or produced during the refining process. These identified parameters are then modeled as the vertices and edges of the graph. The dynamicity of the system is then simulated and analyzed. The system is simulated using MATLAB software programing. The two final products produced by the refining process agreed with results obtained from other published methods. Hence, the effectiveness and simplicity of the model are established.

Fatty acids residue from palm oil refining process as feedstock for lipase catalyzed monoacylglicerol production under batch and continuous flow conditions

2012 ◽  
Vol 77 ◽  
pp. 53-58 ◽  
Author(s):  
Ivaldo I. Junior ◽  
Marcela C. Flores ◽  
Felipe K. Sutili ◽  
Selma G.F. Leite ◽  
Leandro S. de M. e Miranda ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Palm Oil ◽  
Continuous Flow ◽  
Refining Process ◽  
Oil Refining ◽  
Flow Conditions

Evaluation of the energy saving opportunities for palm oil refining process: Sahabat Oil Products (SOP) in Lahad Datu, Malaysia

2016 ◽  
Vol 18 (8) ◽  
pp. 2453-2465 ◽  
Author(s):  
Seri Rahimah Lidu ◽  
Nurul‘Ain Mohamed ◽  
Jiří Jaromír Klemeš ◽  
Petar Sabev Varbanov ◽  
Suzana Yusup
Keyword(s):  
Energy Saving ◽  
Palm Oil ◽  
Refining Process ◽  
Oil Products ◽  
Oil Refining

Modeling & Analysis of a Novel Adaptive Hysteresis Band Controller for Boost and Buck Converter

2017 ◽  
Vol 8 (1) ◽  
pp. 305
Author(s):  
Tanmoy Roy Choudhury ◽  
Byamakesh Nayak
Keyword(s):  
Mathematical Modeling ◽  
Filter Design ◽  
Buck Converter ◽  
Switching Frequency ◽  
Steady State Analysis ◽  
System Parameters ◽  
Modeling Analysis ◽  
The Stability ◽  
Control Methodology ◽  
Control Topology

In this paper, a new topology of Adaptive Hysteresis Band controller for Boost & Buck converter has been proposed, modeled and analyzed.  The difficulties caused in Hysteresis Band (HB) controlled dc-dc converter have been eliminated using Adaptive Hysteresis Band (AHB) controller. This novel control topology can be able to maintain the switching frequency constant unlike HB controller. Thus the filter design for the converters will become easier with this controller. Again this control methodology is a robust one as it depends upon the system parameters where there was no possibility with HB controller. The Mathematical modeling of the controller is shown in this paper, further this has been simulated using Matlab /SIMULINK to generate pulse. The steady state analysis to find the parameters and the stability condition of the converter using the dynamic behavior is also portrayed in this paper. The simulation for a Boost and a Buck converter is also shown separately using AHB controller.

scholarly journals Effect of the Refining Process on Total Hydroxytyrosol, Tyrosol, and Tocopherol Contents of Olive Oil

Foods ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 292 ◽  
Author(s):  
Paolo Lucci ◽  
Valentina Bertoz ◽  
Deborah Pacetti ◽  
Sabrina Moret ◽  
Lanfranco Conte
Keyword(s):  
Olive Oil ◽  
Marked Effect ◽  
Refining Process ◽  
International Standards ◽  
Oil Refining ◽  
Clear Cut ◽  
Olive Oils ◽  
The Impact ◽  
Hydrolysis Of ◽  
Variation Trends

The impact of the olive oil refining process on major antioxidant compound levels was evaluated by means of UHPLC analysis of lampante olive oils collected at different stages of the refining procedure (degumming, chemical and physical flash neutralization, bleaching, and deodorization). For this purpose, the evolution of the tocopherol fraction was investigated by means of the UHPLC-FL method, while the influence of the refining process on the total hydrolyzed phenolic content was assessed by measuring hydroxytyrosol and tyrosol levels after acid hydrolysis of the phenolic extracts. Refining was found to have a marked effect on total hydroxytyrosol and tyrosol contents, as they are completely removed in the early steps of the refining procedure. In contrast, the variation trends of tocopherols are not always clear-cut, and significant decreases in content from 7% to 16% were only revealed during refining in four out of nine samples. In addition, five of the nine refined oils showed final tocopherol concentrations higher than 200 mg/kg, the limit imposed by international standards regarding the content of such compounds in commercial olive oils. This study supports the need for a revision of the International Olive Oil Council (IOC) standard relative to the limit established for tocopherol addition to refined oils to avoid possible legal and economic trade issues.

Sign in / Sign up

Export Citation Format

Share Document