Exergy analysis and process integration of bioethanol production from acid pre-treated biomass: Comparison of SHF, SSF and SSCF pathways

2011 ◽  
Vol 176-177 ◽  
pp. 195-201 ◽  
Author(s):  
K. Ojeda ◽  
E. Sánchez ◽  
M. El-Halwagi ◽  
V. Kafarov
Keyword(s):  
Exergy Analysis ◽  
Process Integration ◽  
Bioethanol Production

Effluent stream treatment in a nitrogenous fertilizer factory: An exergy analysis for process integration

2014 ◽  
Vol 92 (6) ◽  
pp. 862-868 ◽  
Author(s):  
Orlando Jorquera ◽  
Ricardo Kalid ◽  
Asher Kiperstok ◽  
Elias Braga ◽  
Emerson Andrade Sales
Keyword(s):  
Exergy Analysis ◽  
Process Integration ◽  
Nitrogenous Fertilizer ◽  
Effluent Stream

Key drivers influencing the commercialization of ethanol-based biorefineries

1969 ◽  
Vol 16 (3) ◽  
Author(s):  
Anuj K Chandel ◽  
Om V Singh ◽  
Gajula Chandrasekhar ◽  
Linga Venkateswar Rao ◽  
Mangamoori Lakshmi Narasu
Keyword(s):  
Ethanol Production ◽  
Large Scale ◽  
Fossil Fuels ◽  
Process Integration ◽  
Raw Materials ◽  
Cellulase Production ◽  
Bioethanol Production ◽  
Recent Developments ◽  
Key Drivers ◽  
The Cost

The imposition of ethanol derived from biomass for blending in gasoline would make countries less dependent on current petroleum sources, which would save foreign exchange reserves, improve rural economies and provide job opportunities in a clean and safe environment. The key drivers for successful commercial ethanol production are cheap raw materials, economic pretreatment technologies, in-house cellulase production with high and efficient titers, high ethanol fermentation rates, downstream recovery of ethanol and maximum by-products utilization. Furthermore, recent developments in engineering of biomass for increased biomass, down-regulation of lignin synthesis, improved cellulase titers and re-engineering of cellulases, and process integration of the steps involved have increased the possibility of cheap bioethanol production that competes with the price of petroleum. Recently, many companies have come forward globally for bioethanol production on a large scale. It is very clear now that bioethanol will be available at the price of fossil fuels by 2010. This article intends to provide insight and perspectives on the important recent developments in bioethanol research, the commercialization status of bioethanol production, the step-wise cost incurred in the process involved, and the possible innovations that can be utilized to reduce the cost of ethanol production.

Process integration and exergy analysis of the autothermal reforming of glycerol using supercritical water

Energy ◽  
2012 ◽  
Vol 42 (1) ◽  
pp. 192-203 ◽  
Author(s):  
F.J. Gutiérrez Ortiz ◽  
P. Ollero ◽  
A. Serrera ◽  
S. Galera
Keyword(s):  
Supercritical Water ◽  
Exergy Analysis ◽  
Process Integration ◽  
Autothermal Reforming

scholarly journals Performance Analysis of the Perhydro-Dibenzyl-Toluene Dehydrogenation System—A Simulation Study

2021 ◽  
Vol 13 (11) ◽  
pp. 6490
Author(s):  
Farea Asif ◽  
Muhammad Haris Hamayun ◽  
Murid Hussain ◽  
Arif Hussain ◽  
Ibrahim M. Maafa ◽  
...  
Keyword(s):  
Exergy Analysis ◽  
Process Integration ◽  
Operating Conditions ◽  
Energy Resources ◽  
Optimum Operating ◽  
Operational Conditions ◽  
Aspen Hysys ◽  
System A ◽  
Analysis Strategy ◽  
And Storage

The depletion of conventional energy resources has drawn the world’s attention towards the use of alternate energy resources, which are not only efficient but sustainable as well. For this purpose, hydrogen is considered the fuel of the future. Liquid organic hydrogen carriers (LOHCs) have proved themselves as a potential option for the release and storage of hydrogen. The present study is aimed to analyze the performance of the perhydro-dibenzyl-toluene (PDBT) dehydrogenation system, for the release of hydrogen, under various operational conditions, i.e., temperature range of 270–320 °C, pressure range of 1–3 bar, and various platinum/palladium-based catalysts. For the operational system, the optimum operating conditions selected are 320 °C and 2 bar, and 2 wt. % Pt/Al2O3 as a suitable catalyst. The configuration is analyzed based on exergy analysis i.e., % exergy efficiency, and exergy destruction rate (kW), and two optimization strategies are developed using principles of process integration. Based on exergy analysis, strategy # 2, where the product’s heat is utilized to preheat the feed, and utilities consumption is minimized, is selected as the most suitable option for the dehydrogenation system. The process is simulated and optimized using Aspen HYSYS® V10.

Analysis and decrease of the energy demand of bioethanol-production by process integration

2007 ◽  
Vol 27 (16) ◽  
pp. 2657-2664 ◽  
Author(s):  
Martin Pfeffer ◽  
Walter Wukovits ◽  
Georg Beckmann ◽  
Anton Friedl
Keyword(s):  
Energy Demand ◽  
Process Integration ◽  
Bioethanol Production

scholarly journals Exergetic Analysis of Bioethanol Production from Tunisian Waste Dates

2018 ◽  
Vol 11 (1) ◽  
pp. 19-32 ◽  
Author(s):  
Wahada Zeineb ◽  
Khila Zouhour ◽  
Louhichi Boulbaba ◽  
Boukchina Rachid ◽  
Hajjaji Noureddine
Keyword(s):  
Production Process ◽  
Chemical Engineering ◽  
Exergy Analysis ◽  
System Development ◽  
Assessment Tools ◽  
Bioethanol Production ◽  
Exergy Destruction ◽  
Laws Of Thermodynamics ◽  
Energy Exchanges ◽  
Exergetic Analysis

Objective:This study aims at contributing to the area of sustainable bioethanol production system development. The main objective of this study is to thermodynamically evaluate a bioethanol production process from waste dates.Methods & Materials:To this end, several chemical engineering assessment tools have been simultaneously applied. These tools simulate the bioethanol production process using the SuperPro software in order to determine all the materials and energy exchanges. An exergy analysis is also carried out, based on the first and second laws of thermodynamics, in order to locate thermodynamic imperfections in the process.Results:The results obtained show that approximately 60% of the exergy fed to the process is recovered in the useful products (bioethanol and exhausted pulp used as feedstuff). The overall exergy destroyed in the process considered is about 377 kW which represents 7% of the exergy reaching the process. The distillation section, the most energy-intensive stage, constitutes the main contributor of exergy destruction, followed by the fermentation reactor with contributions of 47% and 33%, respectively.

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