Charcoal from agricultural residues as alternative reducing agent in metal recycling

Griessacher, Thomas; Antrekowitsch, Jürgen; Steinlechner, Stefan

doi:10.1016/j.biombioe.2011.12.043

Cited by 60 publications

(33 citation statements)

References 8 publications

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“…Fast pyrolysis is a promising technology to make full use of biomass, transforming it into bio-oil, non-condensable gases, and solid char (Regalbuto 2009;Vispute et al 2010). The bio-oil could be further upgraded to transport fuels through catalytic hydrogenation (Vispute et al 2010), and the solid char can be used for soil amendment (Lehmann 2007;Wu et al 2011a) or CO2 neutral reductant in metallurgical applications (Griessacher et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Characterization of Water-Soluble Intermediates and Solid Residues from Fast Pyrolysis of Cellulose in a Wire-Mesh Reactor

Zhang¹,

Leng²,

Wang³

et al. 2017

BioResources

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The fast pyrolysis characteristics of cellulose were investigated in a wiremesh reactor, which minimized the secondary reactions between the solid residues and the evolved volatiles during pyrolysis and facilitated the collection of the primary intermediates and volatiles. The main component of the water-soluble intermediates was anhydrooligosaccharides with various degrees of polymerization (DP). The yields of cellotriosan and cellotetraosan in the intermediates were much higher than those of levoglucosan and cellobiosan in the early pyrolysis stage, indicating that the depolymerization of the cellulose chain occurred during a random cleavage process. Anhydro-oligosaccharides with DP up to 3, and partially decomposed sugar-ring-containing oligomers, were identified in the primary volatiles. Among the sugar-ring-containing oligomers, the compound with a relative molecular weight of 222 was considered to be the product of a reverse aldolization reaction. An analysis of the solid residues confirmed the occurrence of intramolecular dehydration during the cellulose pyrolysis.

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Section: Introductionmentioning

confidence: 99%

Characterization of Water-Soluble Intermediates and Solid Residues from Fast Pyrolysis of Cellulose in a Wire-Mesh Reactor

Zhang¹,

Leng²,

Wang³

et al. 2017

BioResources

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“…On the basis of confirming the framework, follow the principle of -operative, dynamic, comparable, integrity‖, take the unified coordination of economic, ecological, social, resources input factors into full consideration, and build the criterion level from the three aspects of development potentials, demand and behaviors of agriculture circular economy. Properly accept or reject the assessment indicators by referring to the agriculture circular economy assessment indicators listed in China sustainable development data library (http://chinasd.csdh.cn), the assessment indicator library of China Sustainable Development Study Network (http://www.china-sds.org), and -Circular Economy Assessment Indicator System‖ made by the National Development and the Reform Committee, the National Environment Protection Bureau, and the National Statistics Bureau, and set the tree-view assessment system consisting of 14 indicators [1,2,3] (refer to Figure 1). This paper uses the hierarchical analyses method to identify the weight value of each factor; the weight value reflects the influence of each factor on the agriculture circular economy.…”

Section: Construct Indicator Systemmentioning

confidence: 99%

Study on Agricultural Recycling Economy and Farmers' Ecological Behavior

Liu¹,

Jin²

2017

dtem

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Abstract. In this paper, using the Analytic Hierarchy Process to establish the index system of agricultural circular economy in Jinan City. Evaluation of the Development Level of Agricultural Circular Economy in Jinan City from the Perspective of Development Potential, Development Demands and Development Behaviors of Agricultural Circular Economy, and discuss the influence of each factor on the development of agricultural circular economy. Based on the investigation of ecological behavior of rural farmers in Jinan, this paper analyzes the ecological behavior of peasants from two aspects: cognition of peasants in Jinan City and psychology of peasants, according to the results of the evaluation of the development level of agricultural cycle and the analysis of the farmers' ecological behavior in Jinan, the corresponding countermeasures are put forward.

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“…At the moment, Metso is building the first industrial-scale integrated pyrolysis plant in Finland. The annual production capacity will be 50,000 tonnes of bio-oil, the forest chip need being 225,000 m 3 [34].…”

Section: Competing Use Of Forest Chipsmentioning

confidence: 99%

“…One newly introduced concept that could contribute to the European Union's bioenergy objectives could be the use of biomass as a CO 2 -neutral fuel and reducing agent in the metallurgical industry [3]. Previous research has been concentrated on the evaluation of the technological suitability of biomass-based reducing agents in metallurgical processes.…”

Section: Introductionmentioning

confidence: 99%

Towards More Sustainable Ironmaking—An Analysis of Energy Wood Availability in Finland and the Economics of Charcoal Production

Suopajärvi

Fabritius

2013

Sustainability

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Replacement of fossil carbon by renewable biomass-based carbon is an effective measure to mitigate CO 2 emission intensity in the blast furnace ironmaking process. Depending on the substitution rate of fossil fuels, the required amount of biomass can be substantial. This raises questions about the availability of biomass for multiple uses. At the same time, the economic competitiveness of biomass-based fuels in ironmaking applications should also be a key consideration. In this assessment, availability of energy wood, i.e., logging residues, small-diameter wood and stumps, in Finland is discussed. Since biomass must be submitted to a thermochemical process before use in a blast furnace, the paper describes the production chain, from biomass to charcoal, and economics related to each processing step. The economics of biomass-based reducing agents is compared to fossil-based ones by taking into account the effect of European Union Emissions Trading System (EU ETS). The assessment reveals that there would be sufficient amounts of energy wood available for current users as well as for ironmaking. At present, the economics of biomass-based reducing agents in ironmaking applications is unfavorable. High CO 2 emission allowance prices would be required to make such a scheme competitive against fossil-based reducing agents at current fuel prices.

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Charcoal from agricultural residues as alternative reducing agent in metal recycling

Cited by 60 publications

References 8 publications

Characterization of Water-Soluble Intermediates and Solid Residues from Fast Pyrolysis of Cellulose in a Wire-Mesh Reactor

Characterization of Water-Soluble Intermediates and Solid Residues from Fast Pyrolysis of Cellulose in a Wire-Mesh Reactor

Study on Agricultural Recycling Economy and Farmers' Ecological Behavior

Towards More Sustainable Ironmaking—An Analysis of Energy Wood Availability in Finland and the Economics of Charcoal Production

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