scholarly journals Evaluation of ethanol production from renewable cellulosic resources using process simulation tools

2020 ◽  
Author(s):  
Dimitrios Petrides
Keyword(s):  
Ethanol Production ◽  
Process Simulation ◽  
Simulation Tools

scholarly journals EVALUASI KESETIMBANGAN KELARUTAN GAS KARBON DIOKSIDA (CO2) DALAM PELARUT ALKANOLAMINA MENGGUNAKAN SIMULATOR PROSES

2015 ◽  
Vol 4 (4) ◽  
pp. 1-7
Author(s):  
Yansen Hartanto ◽  
Tri Partono Adhi ◽  
Antonius Indarto
Keyword(s):  
Natural Gas ◽  
Process Simulation ◽  
Column Temperature ◽  
Basic Module ◽  
Acid Gas ◽  
Simulation Tools ◽  
Gas Removal ◽  
Commercial Process ◽  
Electrolyte Nrtl ◽  
Carbon Dioxide Co2

Acid gas removal to remove carbon dioxide (CO2) in natural gas is one of the most important processes. The common removal process of CO2 from natural gas by using alkanolamine solution This process was adopted as basic module in commercial process simulation tools with various equilibrium models. Thus, this study was focused to evaluate the validity in certain operating condition and equilibrium model that produced by commercial simulation tools. The model in this study included coefficient activity model based on Kent-Eisenberg, Li-Mather, and Electrolyte Non Random Two Liquid (NRTL). The evaluation was conducted by doing analysis from simulation result and experiment data that have been used as reference. Furthermore, validation test in absorption process simulation was done to compare column temperature profile. The overall conclusions show that electrolyte NRTL gives the most accurate result.

scholarly journals Techno-Economic Implications of Fed-Batch Enzymatic Hydrolysis

Processes ◽  
2019 ◽  
Vol 7 (11) ◽  
pp. 847 ◽  
Author(s):  
Ellen Argo ◽  
Deepak R. Keshwani
Keyword(s):  
Enzymatic Hydrolysis ◽  
Ethanol Production ◽  
Process Simulation ◽  
Cellulosic Ethanol ◽  
Production Cost ◽  
Simulation Software ◽  
Labor Costs ◽  
Fed Batch ◽  
Capital Costs ◽  
Plant Capacity

Fed-batch enzymatic hydrolysis has the potential to improve the overall process of converting cellulosic biomass into ethanol. This paper utilizes a process simulation approach to identify and quantify techno-economic differences between batch and fed-batch enzymatic hydrolysis in cellulosic ethanol production. The entire process of converting corn stover into ethanol was simulated using SuperPro Designer simulation software. The analysis was conducted for a plant capacity of 2000 metric tons of dry biomass per day. A literature review was used to identify baseline parameters for the process. The sensitivity of the ethanol production cost to changes in sugar conversion efficiency, plant capacity, biomass cost, power cost, labor cost, and enzyme cost was evaluated using the process simulation. For the base scenario, the ethanol unit production cost was approximately $0.10/gallon lower for fed-batch hydrolysis. The greatest differences were seen in facilities costs, labor costs, and capital costs. Using a fed-batch operation decreased facilities costs by 41%, labor costs by 21%, and capital costs by 15%. The sensitivity analysis found that cost of biomass had the greatest effect on ethanol production cost, and in general, the results support the proposition that fed-batch enzymatic hydrolysis does improve the techno-economics of cellulosic ethanol production.

scholarly journals Eco-Efficiency Applied to Dairy Processing: From Concept to Assessment

2018 ◽  
Vol 8 (1) ◽  
pp. 1 ◽  
Author(s):  
Scott Benoit ◽  
Manuele Margni ◽  
Christian Bouchard ◽  
Yves Pouliot
Keyword(s):  
Economic Growth ◽  
Life Cycle ◽  
Resource Use ◽  
Process Simulation ◽  
Simulation Tools ◽  
Dairy Processing ◽  
Life Cycle Perspective ◽  
Guidelines And Recommendations ◽  
Subsequent Addition ◽  
Over Time

Eco-efficiency is a concept which aims at decoupling economic growth from resource use and pollution. The objective of this paper is to review how the application of this concept to dairy processing has evolved over time. Following the introduction of the concept, guidelines and recommendations were introduced in the dairy sector. The absence of a lifecycle perspective and means of measuring improvement led to a subsequent addition of efficiency and intensity assessments. As restrictive regulations and comprehensive methodologies integrating the life-cycle perspective in eco-efficiency assessments were virtually non-existent, the ISO 14045 standard was developed. However, as of yet the dairy processing sector does not appear to have embraced the ISO methodology. Nonetheless, process simulation tools may help and could therefore contribute to the implementation of the eco-efficiency assessments in the dairy processing sector.

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