The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
Mejdi Jeguirim - One of the best experts on this subject based on the ideXlab platform.
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Thermochemical Conversion of waste tyres—a review
Environmental Science and Pollution Research, 2017Co-Authors: Madona Labaki, Mejdi JeguirimAbstract:A review of the energy recovery from waste tyres is presented and focuses on the three Thermochemical processes used to valorise waste tyres: pyrolysis, gasification, and combustion/incineration. After recalling the chemical composition of tyres, the thermogravimetric behaviours of tyres or their components under different atmospheres are described. Different kinetic studies on the Thermochemical processes are treated. Then, the three processes were investigated, with a particular attention given to the gasification, due to the information unavailability on this process. Pyrolysis is a Thermochemical Conversion to produce a hydrocarbon rich gas mixture, condensable liquids or tars, and a carbon-rich solid residue. Gasification is a form of pyrolysis, carried out at higher temperatures and under given atmosphere (air, steam, oxygen, carbon dioxide, etc.) in order to yield mainly low molecular weight gaseous products. Combustion is a process that needs a fuel and an oxidizer with an ignition system to produce heat and/or steam. The effects of various process parameters such as temperature, heating rate, residence time, catalyst addition, etc. on the energy efficiency and the products yields and characteristics are mainly reviewed. These Thermochemical processes are considered to be the more attractive and practicable methods for recovering energy and material from waste tyres. For the future, they are the main promising issue to treat and valorise used tyres. However, efforts should be done in developing more efficient technical systems.
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Thermochemical Conversion of waste tyres a review
Environmental Science and Pollution Research, 2017Co-Authors: Madona Labaki, Mejdi JeguirimAbstract:A review of the energy recovery from waste tyres is presented and focuses on the three Thermochemical processes used to valorise waste tyres: pyrolysis, gasification, and combustion/incineration. After recalling the chemical composition of tyres, the thermogravimetric behaviours of tyres or their components under different atmospheres are described. Different kinetic studies on the Thermochemical processes are treated. Then, the three processes were investigated, with a particular attention given to the gasification, due to the information unavailability on this process. Pyrolysis is a Thermochemical Conversion to produce a hydrocarbon rich gas mixture, condensable liquids or tars, and a carbon-rich solid residue. Gasification is a form of pyrolysis, carried out at higher temperatures and under given atmosphere (air, steam, oxygen, carbon dioxide, etc.) in order to yield mainly low molecular weight gaseous products. Combustion is a process that needs a fuel and an oxidizer with an ignition system to produce heat and/or steam. The effects of various process parameters such as temperature, heating rate, residence time, catalyst addition, etc. on the energy efficiency and the products yields and characteristics are mainly reviewed. These Thermochemical processes are considered to be the more attractive and practicable methods for recovering energy and material from waste tyres. For the future, they are the main promising issue to treat and valorise used tyres. However, efforts should be done in developing more efficient technical systems.
Madona Labaki - One of the best experts on this subject based on the ideXlab platform.
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Thermochemical Conversion of waste tyres—a review
Environmental Science and Pollution Research, 2017Co-Authors: Madona Labaki, Mejdi JeguirimAbstract:A review of the energy recovery from waste tyres is presented and focuses on the three Thermochemical processes used to valorise waste tyres: pyrolysis, gasification, and combustion/incineration. After recalling the chemical composition of tyres, the thermogravimetric behaviours of tyres or their components under different atmospheres are described. Different kinetic studies on the Thermochemical processes are treated. Then, the three processes were investigated, with a particular attention given to the gasification, due to the information unavailability on this process. Pyrolysis is a Thermochemical Conversion to produce a hydrocarbon rich gas mixture, condensable liquids or tars, and a carbon-rich solid residue. Gasification is a form of pyrolysis, carried out at higher temperatures and under given atmosphere (air, steam, oxygen, carbon dioxide, etc.) in order to yield mainly low molecular weight gaseous products. Combustion is a process that needs a fuel and an oxidizer with an ignition system to produce heat and/or steam. The effects of various process parameters such as temperature, heating rate, residence time, catalyst addition, etc. on the energy efficiency and the products yields and characteristics are mainly reviewed. These Thermochemical processes are considered to be the more attractive and practicable methods for recovering energy and material from waste tyres. For the future, they are the main promising issue to treat and valorise used tyres. However, efforts should be done in developing more efficient technical systems.
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Thermochemical Conversion of waste tyres a review
Environmental Science and Pollution Research, 2017Co-Authors: Madona Labaki, Mejdi JeguirimAbstract:A review of the energy recovery from waste tyres is presented and focuses on the three Thermochemical processes used to valorise waste tyres: pyrolysis, gasification, and combustion/incineration. After recalling the chemical composition of tyres, the thermogravimetric behaviours of tyres or their components under different atmospheres are described. Different kinetic studies on the Thermochemical processes are treated. Then, the three processes were investigated, with a particular attention given to the gasification, due to the information unavailability on this process. Pyrolysis is a Thermochemical Conversion to produce a hydrocarbon rich gas mixture, condensable liquids or tars, and a carbon-rich solid residue. Gasification is a form of pyrolysis, carried out at higher temperatures and under given atmosphere (air, steam, oxygen, carbon dioxide, etc.) in order to yield mainly low molecular weight gaseous products. Combustion is a process that needs a fuel and an oxidizer with an ignition system to produce heat and/or steam. The effects of various process parameters such as temperature, heating rate, residence time, catalyst addition, etc. on the energy efficiency and the products yields and characteristics are mainly reviewed. These Thermochemical processes are considered to be the more attractive and practicable methods for recovering energy and material from waste tyres. For the future, they are the main promising issue to treat and valorise used tyres. However, efforts should be done in developing more efficient technical systems.
Anastasia Zabaniotou - One of the best experts on this subject based on the ideXlab platform.
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Agro-residues implication in decentralized CHP production through a Thermochemical Conversion system with SOFC
Sustainable Energy Technologies and Assessments, 2014Co-Authors: Anastasia ZabaniotouAbstract:The present study is focusing on the CHP generation by agro biomass Thermochemical derived gases and liquids, as feedstock for hydrogen-rich gas production and consecutively, power generation by using fuel cells mainly of the SOFC type. Objectives encompass analysis, integration of processes and synergies along with estimation of selected agro residues physicochemical characteristics, suitability and implication in decentralized CHP systems of Thermochemical Conversion in conjunction with SOFC. Estimation of the conjugated system energy efficiency by using data from olive kernel steam gasification is also reported. The integration of agro biomass gasification with SOFC offers the potential of highly efficient and renewable power generation. From the perspective of the integrated process, power density and fuel characteristics determine the overall efficiency of SOFCs. © 2014 Elsevier Ltd.
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Thermochemical Conversion of biomass to second generation biofuels through integrated process design a review
Renewable & Sustainable Energy Reviews, 2011Co-Authors: Theodoros Damartzis, Anastasia ZabaniotouAbstract:The need for clean and environmental friendly fuels is leading the world to the production of biofuels and replacing conventional fuels by them. Second generation biofuels derived from lignocellulosic feedstocks tackle the drawbacks posed by the so-called first generation ones regarding feedstock availability and competition with the food industries. Thermochemical Conversion of biomass to biofuels is a promising alternative route relying on well-established technologies including gasification and the Fischer-Tropsch synthesis. The conjunction of these processes creates a pathway through which the production of biofuels is sustainable. However, the multiple interactions between the processing steps greatly increase the difficulty in the accurate design of such processes. Detailed process modelling and optimization studies combined with process integration methods are necessary to demonstrate an effective way for the exploitation of these interactions. The aim of this work is to present and analyze the Thermochemical Conversion of biomass to second generation liquid biofuels as well as to indicate the emerging challenges and opportunities of the application of process integration on such processes towards innovative and sustainable solutions concerning climate concerns and energy security.
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Thermochemical Conversion of biomass to second generation biofuels through integrated process design—A review
Renewable & Sustainable Energy Reviews, 2010Co-Authors: Theodoros Damartzis, Anastasia ZabaniotouAbstract:The need for clean and environmental friendly fuels is leading the world to the production of biofuels and replacing conventional fuels by them. Second generation biofuels derived from lignocellulosic feedstocks tackle the drawbacks posed by the so-called first generation ones regarding feedstock availability and competition with the food industries. Thermochemical Conversion of biomass to biofuels is a promising alternative route relying on well-established technologies including gasification and the Fischer-Tropsch synthesis. The conjunction of these processes creates a pathway through which the production of biofuels is sustainable. However, the multiple interactions between the processing steps greatly increase the difficulty in the accurate design of such processes. Detailed process modelling and optimization studies combined with process integration methods are necessary to demonstrate an effective way for the exploitation of these interactions. The aim of this work is to present and analyze the Thermochemical Conversion of biomass to second generation liquid biofuels as well as to indicate the emerging challenges and opportunities of the application of process integration on such processes towards innovative and sustainable solutions concerning climate concerns and energy security.
Jacques Lede - One of the best experts on this subject based on the ideXlab platform.
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rules of thumb empirical rules for the biomass utilization by Thermochemical Conversion
Journal of The Japan Institute of Energy, 2014Co-Authors: Michael Jerry Antal, Masato Kouzu, Jacques Lede, Lieve Helsen, Yukihiko MatsumuraAbstract:The rules of thumb for developing Thermochemical Conversion technology are introduced together with the fundamental rules of thumb for Thermochemical Conversion, which is the basic idea for these technologies. The target technologies are, (a) metal-impregnated wood treatment by carbonization, (b) fast pyrolysis, (c) supercritical water gasification and, (d) advanced biodiesel production. They are presented in tables in terms of the rule of thumb and its benefit. We hope those who are considering introduction of these technologies will find this paper useful for t heir plant design and system development. It also should be noted t hat t he scientific background supports the rules of thumb for each technology, and, thus, knowing the rules of thumb will provide insight into the fundamental science of the technology.
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solar Thermochemical Conversion of biomass
Solar Energy, 1999Co-Authors: Jacques LedeAbstract:Abstract The purpose of this paper is first to briefly describe the usual routes of biomass Thermochemical Conversion and then to discuss the possibility of using concentrated solar energy to provide the necessary heat for the processes. Gasification, fast and slow pyrolysis are more particularly described. They can be carried out for the preparation of a vast range of possible products that can be used as energy carriers and/or as a source of chemical commodities. The gasification processes are intended for the preparation of gas mixtures (CO, H 2 , etc.) for chemical synthesis, heat or electricity generation. The fast pyrolysis formerly carried out for gas production (CO, H 2 , light hydrocarbons, etc.) is now mainly studied with the objective to produce liquids (bio-oils). Slow pyrolysis is in use for a long time for the preparation of solids (charcoal). The nature and quality of the products depend mainly on the experimental conditions of the process (temperature, heating rates, residence times, etc.). The possibility of a solar entry in the gasification and pyrolysis processes is then discussed. The technical and scientific benefits, as well as the difficulties, are underlined, showing the necessity to design new types of specific reactors. From a fundamental point of view the advantages are also underlined of using a concentrated radiation as a laboratory tool for studying the very fast primary steps of biomass thermal decomposition as well as the possible existence of intermediate short life time species that are still not well known.
Ruth E Richardson - One of the best experts on this subject based on the ideXlab platform.
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Resource recovery and waste-to-energy from wastewater sludge via Thermochemical Conversion technologies in support of circular economy: a comprehensive review
BMC Chemical Engineering, 2020Co-Authors: Raaj R Bora, Ruth E RichardsonAbstract:With the rapid rise in global population over the past decades, there has been a corresponding surge in demand for resources such as food and energy. As a consequence, the rate of waste generation and resultant pollution levels have risen drastically. Currently, most organic solid wastes are either land applied or sent to landfills, with the remaining fraction incinerated or anaerobically digested. However, with the current emphasis on the reduction of emissions, nutrient recovery, clean energy production and circular economy, it is important to revisit some of the conventional methods of treating these wastes and tap into their largely unrealized potential in terms of environmental and economic benefits. Wastewater sludge, with its high organic content and fairly constant supply, provides a great opportunity to implement some of these strategies using Thermochemical Conversion technologies, which are considered as one of the alternatives for upcycling such waste streams. This paper summarizes the results of prominent studies for valorizing wastewater sludge through Thermochemical Conversion technologies while drawing inferences and identifying relationships between different technical and operating parameters involved. This is followed by sections emphasizing the environmental and economic implications of these technologies, and their corresponding products in context of the broader fields of waste-to-energy, nutrient recycling and the progress towards a circular economy.
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techno economic feasibility and spatial analysis of Thermochemical Conversion pathways for regional poultry waste valorization
ACS Sustainable Chemistry & Engineering, 2020Co-Authors: Raaj R Bora, Johannes Lehmann, Jefferson W Tester, Ruth E RichardsonAbstract:This study examines prominent Thermochemical Conversion technologies, such as slow pyrolysis, fast pyrolysis, gasification and hydrothermal liquefaction, for treating poultry litter in New York Sta...
