Biotar ironmaking using wooden biomass and nanoporous iron ore

This paper describes fundamental experiments of a new biomass ironmaking that employs low-grade iron ore and woody biomass for promoting the direct reduction, FeO + C ) Fe + CO, in which dehydrated, porous limonite iron ore was filled with carbon deposited from the biomass tar, biotar. In our expe...

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Main Authors:	Hata, Yuichi, Purwanto, Hadi, Hosokai, Sou, Hayashi, Jun-ichiro, Kashiwaya, Yoshiaki, Akiyama, Tomohiro
Format:	Article
Language:	English
Published:	American Chemical Society (ACS Publications) 2009
Subjects:	TN600 Metallurgy
Online Access:	http://irep.iium.edu.my/7969/ http://irep.iium.edu.my/7969/ http://irep.iium.edu.my/7969/ http://irep.iium.edu.my/7969/1/biotar_ironmaking.pdf

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spelling	iium-79692011-12-02T05:31:30Z http://irep.iium.edu.my/7969/ Biotar ironmaking using wooden biomass and nanoporous iron ore Hata, Yuichi Purwanto, Hadi Hosokai, Sou Hayashi, Jun-ichiro Kashiwaya, Yoshiaki Akiyama, Tomohiro TN600 Metallurgy This paper describes fundamental experiments of a new biomass ironmaking that employs low-grade iron ore and woody biomass for promoting the direct reduction, FeO + C ) Fe + CO, in which dehydrated, porous limonite iron ore was filled with carbon deposited from the biomass tar, biotar. In our experiments, three types of iron ores containing different amounts of combined water (CW; 1.6, 3.8, and 9.0 mass %) were first dehydrated at 450 °C to make them porous and then heated with pine tree biomass at 500-600 °C for the gasification and the tar vapor generated was decomposed to deposit carbon within/on the porous ores. The dehydration treatment made the iron ores porous by removing CW and significantly increased their Brunauer-Emmett-Teller (BET) specific surface areas and porosities. In the second treatment of biomass gasification and decomposition of tar vapor, the biomass was changed into char, tar vapor, and reducing gas; the biotar was decomposed and carbonized within the porous ores. Interestingly, the ores caught biotar effectively, not only on the surface but also inside their pores. Here, the ores with the nanosized pores served as catalysts for tar carbonization with gas generation. Simultaneously, the ores were partially reduced to magnetite by the reducing gas. The ores containing carbonized material were easily reduced to iron by only heating until 900 °C in a nitrogen atmosphere; this was due to the direct contact of carbon and iron oxide within the ores, so-called direct reduction. In conclusion, the dehydrated limonite iron ore was most effective for avoiding the generation of sticky tar in the biomass gasification and for filling the porous ore with carbon from tar. The product is a promising raw material for biomass ironmaking. The results appealed an innovative ironmaking method with a large reduction of carbon dioxide emission using low-grade iron ore and woody biomass. American Chemical Society (ACS Publications) 2009 Article PeerReviewed application/pdf en http://irep.iium.edu.my/7969/1/biotar_ironmaking.pdf Hata, Yuichi and Purwanto, Hadi and Hosokai, Sou and Hayashi, Jun-ichiro and Kashiwaya, Yoshiaki and Akiyama, Tomohiro (2009) Biotar ironmaking using wooden biomass and nanoporous iron ore. Energy & Fuels, 23 (2). pp. 1128-1131. ISSN 0887-0624 http://pubs.acs.org/doi/abs/10.1021/ef800967h DOI: 10.1021/ef800967h
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TN600 Metallurgy
spellingShingle	TN600 Metallurgy Hata, Yuichi Purwanto, Hadi Hosokai, Sou Hayashi, Jun-ichiro Kashiwaya, Yoshiaki Akiyama, Tomohiro Biotar ironmaking using wooden biomass and nanoporous iron ore
description	This paper describes fundamental experiments of a new biomass ironmaking that employs low-grade iron ore and woody biomass for promoting the direct reduction, FeO + C ) Fe + CO, in which dehydrated, porous limonite iron ore was filled with carbon deposited from the biomass tar, biotar. In our experiments, three types of iron ores containing different amounts of combined water (CW; 1.6, 3.8, and 9.0 mass %) were first dehydrated at 450 °C to make them porous and then heated with pine tree biomass at 500-600 °C for the gasification and the tar vapor generated was decomposed to deposit carbon within/on the porous ores. The dehydration treatment made the iron ores porous by removing CW and significantly increased their Brunauer-Emmett-Teller (BET) specific surface areas and porosities. In the second treatment of biomass gasification and decomposition of tar vapor, the biomass was changed into char, tar vapor, and reducing gas; the biotar was decomposed and carbonized within the porous ores. Interestingly, the ores caught biotar effectively, not only on the surface but also inside their pores. Here, the ores with the nanosized pores served as catalysts for tar carbonization with gas generation. Simultaneously, the ores were partially reduced to magnetite by the reducing gas. The ores containing carbonized material were easily reduced to iron by only heating until 900 °C in a nitrogen atmosphere; this was due to the direct contact of carbon and iron oxide within the ores, so-called direct reduction. In conclusion, the dehydrated limonite iron ore was most effective for avoiding the generation of sticky tar in the biomass gasification and for filling the porous ore with carbon from tar. The product is a promising raw material for biomass ironmaking. The results appealed an innovative ironmaking method with a large reduction of carbon dioxide emission using low-grade iron ore and woody biomass.
format	Article
author	Hata, Yuichi Purwanto, Hadi Hosokai, Sou Hayashi, Jun-ichiro Kashiwaya, Yoshiaki Akiyama, Tomohiro
author_facet	Hata, Yuichi Purwanto, Hadi Hosokai, Sou Hayashi, Jun-ichiro Kashiwaya, Yoshiaki Akiyama, Tomohiro
author_sort	Hata, Yuichi
title	Biotar ironmaking using wooden biomass and nanoporous iron ore
title_short	Biotar ironmaking using wooden biomass and nanoporous iron ore
title_full	Biotar ironmaking using wooden biomass and nanoporous iron ore
title_fullStr	Biotar ironmaking using wooden biomass and nanoporous iron ore
title_full_unstemmed	Biotar ironmaking using wooden biomass and nanoporous iron ore
title_sort	biotar ironmaking using wooden biomass and nanoporous iron ore
publisher	American Chemical Society (ACS Publications)
publishDate	2009
url	http://irep.iium.edu.my/7969/ http://irep.iium.edu.my/7969/ http://irep.iium.edu.my/7969/ http://irep.iium.edu.my/7969/1/biotar_ironmaking.pdf
first_indexed	2023-09-18T20:17:31Z
last_indexed	2023-09-18T20:17:31Z
_version_	1777407887175319552

Biotar ironmaking using wooden biomass and nanoporous iron ore

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