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Related publications (21)

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Exergetic, environmental and economic assessment of sugarcane first-generation biorefineries

François Maréchal, Daniel Alexander Florez Orrego

First generation ethanol (1G) contributes to the majority of the ethanol produced worldwide, predominantly centered on corn and sugarcane. Nevertheless, several issues are regularly highlighted concerning the long-term sustainability of this technology, in ...

2019

Transition of a South African sugar mill towards a biorefinery. A feasibility assessment

Edgard Gnansounou, Jegannathan Kenthorai Raman, Elia Mercedes Ruiz Pachon, Pavel Vaskan

The survival of the sugar industry in South Africa is under threat due to an unstable and low sugar price, high production cost and old infrastructure. At present, coal and sugarcane bagasse are used as fuels in an inefficient boiler to generate the heat a ...

ELSEVIER SCI LTD2018

Improved Sugars Release from Chili Post-harvest Residues by Dilute Acid Assisted Lime Pretreatment

Edgard Gnansounou

Lignocellulosic biomass seems promising renewable feedstocks for the production of biofuels and other value-added products. It is composed of cellulose, hemicelluloses and lignin, which are connected by several intra-and inter-polymer linkages. For effecti ...

2018

Bioethanol Production from Sugarcane Green Harvest Residues Using Auxin-Assisted Pretreatment

Edgard Gnansounou, Jegannathan Kenthorai Raman

Bioethanol and biochemicals from agriculture residues are key alternative for transport fuels and fossil chemicals to environmental impact mitigation and rural economy. In biofuels and biochemicals production, pretreatment is the crucial and energy demandi ...

SPRINGER-VERLAG SINGAPORE PTE LTD2018

Thermo-economic and environmental comparison of supercritical water and enzymatic hydrolysis of sugarcane bagasse in a biorefinery concept

François Maréchal, Adriano Viana Ensinas

In this study, we discuss the difference regarding thermo-economic and environmental (water intake) aspects between two methods of biomass hydrolysis. A thermo-economic model was developed using Aspen Plus® and MATLAB software in order to analyze the energ ...

2017

Reduction of process steam demand and water-usage through heat integration in sugar and ethanol production from sugarcane - Evaluation of different plant configurations

Adriano Viana Ensinas

The sugarcane industry represents one of the most important economic activities in Brazil producing sugar and ethanol for the internal and external markets. There are also plants dedicated only to ethanol production. The aim of this study is to accomplish ...

2017

Bioconversion of sugarcane crop residue for value added products - An overview

Edgard Gnansounou

Sugarcane is a major crop cultivated globally and the residue left over after the crop harvest and extraction of juice is a good biomass source that can be used for the production of several useful chemicals. The sugarcane bagasse is an excellent substrate ...

Pergamon-Elsevier Science Ltd2016

Environmental impact assessment of lignocellulosic lactic acid production: Integrated with existing sugar mills

Pavel Vaskan

Lactic acid (LA) is considered for the diversification and value addition to sugar industry in South Africa, through a bioconversion of sugarcane bagasse and leaves. A bioconversion process was modeled in Aspen Plus (R) V8.6 and its environmental impacts w ...

Institution of Chemical Engineers2016

Methodology for the design and comparison of optimal production configurations of first and first and second generation ethanol with power

François Maréchal, Rami Bechara

This article applies a systematic methodology to the optimization and comparison of two sugarcane conversion processes of great potential: the production of first generation ethanol and electricity in an integrated distillery and cogeneration plant (1G+COG ...

2016

Comparative Evaluation of Three Sugarcane Supply Strategies in Colombia: Logistics, Energy and GHG Emissions

François Maréchal, Jairo Alexander Lozano Moreno

Sugarcane-based ethanol in Colombia has a prospective opportunity to explore the production of ethanol from lignocellulosic biomass taking into account that a large amount of generated residues (between 50 and 100 t/ha) are left on the field after green ha ...

2015

Comparative techno-economic assessment and LCA of selected integrated sugarcane-based biorefineries

Edgard Gnansounou, Elia Mercedes Ruiz Pachon, Pavel Vaskan

This work addresses the economic and environmental performance of integrated biorefineries based on sugarcane juice and residues. Four multiproduct scenarios were considered; two from sugar mills and the others from ethanol distilleries. They are integrate ...

Elsevier2015

Thermo-Economic Optimisation of Integrated Ethanol and Methanol Production in the Sugarcane Industry

François Maréchal, Adriano Viana Ensinas, Emanuela Peduzzi, Priscilla Caliandro

The present paper evaluated a sugarcane biorefinery producing ethanol, through the conventional process by sugars fermentation and methanol through bagasse and leaves gasification, hot cleaning and synthesis. The sugarcane biorefinery was modelled using fl ...

Aidic Servizi Srl2014

Sustainability assessment of lignocellulosic biorefineries under uncertainty

Juan David Villegas Gomez

Biorefinery concepts refer to the integrated production of food, fuel, power, commodity chemicals, and polymers from biomass, mimicking the structure of a fossil-based refinery. The use of lignocellulosic biomass as feedstock for biorefineries has been pro ...

EPFL2014

New alternatives for the fermentation process in the ethanol production from sugarcane: Extractive and low temperature fermentation

Adriano Viana Ensinas

Ethanol is produced in large scale from sugarcane in Brazil by fermentation of sugars and distillation. This is currently considered as an efficient biofuel technology, leading to significant reduction on greenhouse gases emissions. However, some improveme ...

Elsevier2014

Thermo-Economic Optimization of Integrated First and Second Generation Sugarcane Ethanol Plant

François Maréchal, Adriano Viana Ensinas, Victor Codina Gironès, Juliana Queiroz Albarelli

The sugarcane industry has been responsible in some countries for the production of most of the sugar and ethanol available in the world for internal and external markets. In this sector, ethanol can be produced by fermentation of sugars obtained directly ...

2013

Bioethanol production from oil palm empty fruit bunches : a comparison among different pretreatment options

Simone Chiesa

Face to the increasing demand for energy, the declining availability of fossil fuels and the periodical tensions in the geopolitical context of oil-producing countries have raised serious concerns in the governments worldwide as well as in the public opini ...

EPFL2012

Processing of Sustainable Cellular Biocomposites

Carole Boissard

Petroleum-based polymers and composites are commonly used in a wide variety of application fields. However ecological concerns, increasing oil prices and dwindling natural resources explain why nowadays industrial and public interest is more than ever focu ...

EPFL2012

SYNTHESIS AND PARAMETER OPTIMIZATION OF A COMBINED SUGAR AND ETHANOL PRODUCTION PROCESS INTEGRATED WITH A CHP SYSTEM Part 2: Maximization of total site net power

François Maréchal, Adriano Viana Ensinas

The combined sugar and ethanol production process from sugar cane is a paradigmatic application for energy integration strategies because of the high number of hot and cold streams involved, the external hot utility requirement at two temperature levels fo ...

2009

Stratégies villageoises pour la gestion des paysages forestiers du Menabe Central, Madagascar

Introduction In order to reduce deforestation, the current attitude of conservation programmes and forest politics does no longer ban the local populations from the forests, because such measures present negative consequences for the communities. Today's t ...

EPFL2009

Review: microbial biocenoses in pristine aquifers and an assessment of investigative methods

David Hunkeler, Pierre Rossi

The current knowledge on microbial biocenoses (communities) in pristine aquifers is presented in a review, which also discusses their relevance for questions of groundwater protection. Aquifers are heterogeneous on all scales and structured in a variety of ...

Springer Verlag2006