Tar elimination from biomass gasification syngas with bauxite residue derived catalysts and gasification char

Cheng, Long; Wu, Zhiqiang; Zhang, Zhiguo; Guo, Chaozhong; Ellis, Naoko; Bi, Xiaotao; Watkinson, A. P.; Grace, John R.

doi:10.1016/j.apenergy.2019.114088

Cited by 73 publications

(29 citation statements)

References 71 publications

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“…These components might play an important role in reducing carbon deposition and catalyst sintering. In their study of bauxite residue, Cheng et al [ 50 ] found that alkaline components play a crucial role in catalyst reduction. According to their analysis, “Na and Ca preferentially combine with inert minerals (aluminium, silica, and titanium minerals) in bauxite residue, liberating active iron entrapped in spinel phases, and thus greatly improving the reduction of iron.” [ 50 ] In their study of Ni‐UGSO catalyst, Chamoumi et al [ 16 ] also reported that the presence of alkaline NaO, MgO, and MnO components prevented the formation of carbon residues on their catalyst.…”

Section: Resultsmentioning

confidence: 99%

“…According to their analysis, "Na and Ca preferentially combine with inert minerals (aluminium, silica, and titanium minerals) in bauxite residue, liberating active iron entrapped in spinel phases, and thus greatly improving the reduction of iron." [50] In their study of Ni-UGSO catalyst, Chamoumi et al [16] also reported that the presence of alkaline NaO, MgO, and MnO components prevented the formation of carbon residues on their catalyst. [16] Note that the rate of temperature increase in the system may have an impact on surface sintering, and consequently on the surface area of the catalyst.…”

Section: Surface and Pore Analysismentioning

confidence: 99%

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Bauxite residue as an iron‐based catalyst for catalytic cracking of naphthalene, a model compound for gasification tar

Madadkhani

Burhenne

et al. 2020

Can J Chem Eng

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An iron‐based catalyst from bauxite residue (aka BR and red mud) was developed for removing biomass gasification tar. Its performance was investigated with naphthalene as the model tar compound. This was achieved by measuring the catalytic naphthalene conversion at five space velocities and at four temperatures in the 500°C to 800°C range, both in a N2 environment and in 13 vol% H2 with the balance N2 for 14 hours to determine the long‐term performance. The physical and chemical characteristics of the catalyst were studied prior to and after exposure to naphthalene to track the evolution of the catalyst as a result of the chemical reaction. In addition, the effects of calcination temperature and reduction with H2 on the surface characteristics were investigated. The bauxite residue catalyst was shown to be significantly active for naphthalene cracking, with its activity comparable to that of an industrial Ni catalyst. Activity measurements over 14 hours of testing showed that the catalyst activity decreased from 98% to 65% naphthalene conversion with time as a result of catalyst deactivation when tested in a N2 reaction environment. In the presence of 13 vol% H2; however, the activity maintained >95% conversion for the entire duration of the experiment.

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Section: Resultsmentioning

confidence: 99%

Section: Surface and Pore Analysismentioning

confidence: 99%

Bauxite residue as an iron‐based catalyst for catalytic cracking of naphthalene, a model compound for gasification tar

Madadkhani

Burhenne

et al. 2020

Can J Chem Eng

Self Cite

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“…Research on improving these conversion technologies is a trending research hotspot. For example, biomass gasification is a feasible and practical clean energy conversion technology, but it faces crucial challenges to effectively eliminate the tar generated during the gasification process [11,71,72]. Another trending research topic in this area is to enhance the efficiency and reliability of biomass gasification.…”

Section: Plos Onementioning

confidence: 99%

A systematic bibliometric review of clean energy transition: Implications for low-carbon development

Zhang

Xue

et al. 2021

PLoS ONE

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More voices are calling for a quicker transition towards clean energy. The exploration and exploitation of clean energy such as wind energy and solar energy are effective means to optimise energy structure and improve energy efficiency. To provide in-depth understanding of clean energy transition, this paper utilises a combination of multiple bibliometric mapping techniques, including HistCite, CiteSpace and R Bibliometrix, to conduct a systematic review on 2,191 clean energy related articles obtained from Web of Science (WoS). We identify five current main research streams in the clean energy field, including Energy Transition, Clean Energy and Carbon Emission Policy, Impact of Oil Price on Alternative Energy Stocks, Clean Energy and Economics, and Venture Capital Investments in Clean Energy. Clearly, the effectiveness of policy-driven and market-driven energy transition is an important ongoing debate. Emerging research topics are also discussed and classified into six areas: Clean Energy Conversion Technology and Biomass Energy Utilisation, Optimisation of Energy Generation Technology, Policy-Making in Clean Energy Transition, Impact of Clean Energy Use and Economic Development on Carbon Emissions, Household Use of Clean Energy, and Clean Energy Stock Markets. Accordingly, more and more research attention has been paid to how to improve energy efficiency through advanced clean energy technology, and how to make targeted policies for clean energy transition and energy market development. This article moves beyond the traditional literature review methods and delineates a systematic research agenda for clean energy research, providing research directions for achieving low-carbon development through the clean energy transition.

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“…However, it is not new; a number of studies on the application of both specific wastes such as red mud [ 19 ] and wastes in general [ 20–22 ] as resources for preparation of heterogeneous catalysts for many kinds of applications have been published. Among these, the use of waste materials, such as the ash from biomass combustion [ 23 ] and bauxite residues, [ 24 ] has also been proposed for tar abatement in biomass gasification, but the development of cheap, active, and stable catalysts is still an open challenge.…”

Section: Introductionmentioning

confidence: 99%

Sewage sludge ashes as a primary catalyst for the abatement of tar in biomass gasification: Bubbling versus spouted‐fluidized bed configuration

Ruoppolo

Miccio

et al. 2021

Can J Chem Eng

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Sewage sludge (SS) ashes, rich in iron and calcium, have been tested as a primary catalyst during air gasification of commercial wood pellets in a pre‐pilot scale fluidized bed (FB) reactor. The shifting from a conventional fluidized bed to a spouted‐fluidized bed configuration has been assessed on the catalyst performance. Specifically, at constant total air inlet flow rate, two different values of the air flow rate in a central spouting nozzle have been adopted, which correspond to 20% and 37.5% of the total inlet gas flow rate. Under the conventional fluidized bed configuration (i.e., bubbling regime), SS ashes exhibit good performance in term of tar reduction (about 20% decrease compared to a bed of inert silica sand), without significantly affecting the syngas composition. Concerning the transition to the spouted‐fluid bed configuration, the gas‐solid contact efficiency is enhanced at lower air flow rates through the central nozzle, with respect to the FB regime, leading to better gasification performance in terms of tar reduction (around 40% less) and syngas quality. A slightly worse gasification performance is obtained at high values of air flow rate in the central nozzle, due to a progressive increase of gas bed bypassing. Furthermore, moving from the conventional FB configuration to the spouted‐fluid bed one dramatically boosts the elutriation rate of carbon fines as well as the attrition of catalyst particles.

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Tar elimination from biomass gasification syngas with bauxite residue derived catalysts and gasification char

Cited by 73 publications

References 71 publications

Bauxite residue as an iron‐based catalyst for catalytic cracking of naphthalene, a model compound for gasification tar

Bauxite residue as an iron‐based catalyst for catalytic cracking of naphthalene, a model compound for gasification tar

A systematic bibliometric review of clean energy transition: Implications for low-carbon development

Sewage sludge ashes as a primary catalyst for the abatement of tar in biomass gasification: Bubbling versus spouted‐fluidized bed configuration

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