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Soil, land care and environmental research
RESEARCH ARTICLE

Microscopic characterisation of synthetic Terra Preta

Chee Hung Chia A , Paul Munroe A B , Stephen Joseph A and Yun Lin A

A School of Materials Science and Engineering, University of NSW, Sydney, NSW 2052, Australia.

B Corresponding author. Email: p.munroe@unsw.edu.au

Australian Journal of Soil Research 48(7) 593-605 http://dx.doi.org/10.1071/SR10012
Submitted: 5 January 2010  Accepted: 17 May 2010   Published: 28 September 2010

Abstract

Amazonian Dark Earths (Terra Preta) are anthropogenic soils with high organic carbon content and the ability to sustain higher fertility than adjacent, intensely weathered, acidic soils. Consequently, the microstructural development of biochar–mineral complexes, termed synthetic Terra Preta (STP), has been investigated. Here, biochar–mineral complexes are produced at elevated temperatures to mimic the structure of Terra Preta. These materials, if added to soils, may then also improve fertility. The raw materials used in STP were organic biowaste, such as sawdust, chicken manure, and blood and bone, and inorganic minerals such as kaolinite, bentonite, and cement kiln dust (which consists mainly of calcite). The STP samples were characterised using X-ray photoelectron spectroscopy, nuclear magnetic resonance, scanning electron microscopy (SEM), and transmission electron microscopy (TEM), and associated microchemical analytical methods, to gain an understanding of the interactions that occurred during processing between the organic and inorganic phases. The STP specimens exhibited microstructures that closely resemble Terra Preta. SEM and TEM revealed a complex aggregation of phases, together with evidence of the interfacial reactions, especially at higher processing temperatures. It is anticipated then that STP may be as effective in promoting plant growth and in sequestering carbon as Terra Preta

Additional keywords: XPS, NMR, biochar.


References

Amonette JE , Joseph S (2009) Characteristics of biochar: microchemical properties. In ‘Biochar for environmental management: science and technology’. (Eds J Lehmann, S Joseph) pp. 33–51. (Earthscan: London)

Arroyo-Kalin M , Neves EG , Woods WI (2009) Anthropogenic dark earths of the central Amazon region: remarks on their evolution and polygenetic composition. In ‘Amazon Dark Earths: Wim Sombroek’s vision’. (Eds WI Woods, et al.) pp. 99–126. (Springer Science + Business Media B.V.)

Boehm HP 1994 Some aspects of the surface chemistry of carbon blacks and other carbons. Carbon 32 759 769 doi:10.1016/0008-6223(94)90031-0

Bourgois J Bartholin MC Guyonnet R 1989 Thermal treatment of wood: analysis of the obtained product. Wood Science and Technology 23 303 310 doi:10.1007/BF00353246

Bourgois J Guyonnet R 1988 Characterization and analysis of torrefied wood. Wood Science and Technology 22 143 155 doi:10.1007/BF00355850

Brennan JK Bandosz TJ Thomson KT Gubbins KE 2001 Water in porous carbons. Colloids and Surfaces A: Physicochemical and Engineering Aspects 187–188 539 568 doi:10.1016/S0927-7757(01)00644-6

Brodowski S Amelung W Haumaier L Abetz C Zech W 2005 Morphological and chemical properties of black carbon in physical soil fractions as revealed by scanning electron microscopy and energy-dispersive X-ray spectroscopy. Geoderma 128 116 129 doi:10.1016/j.geoderma.2004.12.019

Chia CH , Joseph S , Munroe P , Lin Y , Downie A , Kimber S , van Zweiten L , Cowie A , Singh BP , Lehmann J , Hanley K , Blackwell P (2008) Development of Synthetic Terra Preta (STP): Characterization and initial research findings. Available at: www.biochar-international.org/sites/default/files/Joseph_IBI_poster_PM.pdf (accessed 1 December 2009).

Costa ML Kern DC Pinto AHE Souza J 2004 The ceramic artifacts in archaeological black earth (terra preta) from lower Amazon region, Brazil: Mineralogy. Acta Amazonica 34 165 178

Czimczik CI Masiello CA 2007 Controls on black carbon storage in soils. Global Biogeochemical Cycles 21 GB3005
doi:10.1029/2006GB002798

Fujita I Tomooka J Sugimura T 1991 Sorption of anionic surfactants with wood charcoal. Bulletin of the Chemical Society of Japan 64 738 740 doi:10.1246/bcsj.64.738

Giannuzzi LA Stevie FA 1999 A review of focused ion beam milling techniques for TEM specimen preparation. Micron 30 197 204 doi:10.1016/S0968-4328(99)00005-0

Glaser B Haumeier L Guggenberger G Zech W 1998 Black carbon in soils: the use of benzenecarboxylic acids as specific marker. Organic Geochemistry 29 811 819 doi:10.1016/S0146-6380(98)00194-6

Glaser B Lehmann J Zech W 2002 Ameliorating physical and chemical properties of highly weathered soils in the tropics with charcoal – a review. Biology and Fertility of Soils 35 219 230 doi:10.1007/s00374-002-0466-4

Heckenberger MJ (2005) ‘The ecology of power: culture, place and personhood in the southern Amazon, A.D. 1000–2000.’ (Routledge: New York)

Heckenberger MJ Petersen JB Neves EG 1999 Village size and permanence in Amazonia: two archaeological examples from Brazil. Latin American Antiquity 10 4 353 376 doi:10.2307/971962

Lagaly G 1984 Clay organic reactions. Philosophical Transactions of the Royal Society of London 311 315 332

Laszlo P 1987 Chemical reaction on clays. Science 235 1473 1477
doi:10.1126/science.235.4795.1473

Lehmann J , Campos CV , Vasconcelos JLdM , German LA (2004) Sequential P fractionation of relict anthropogenic dark earths of Amazonia. In ‘Amazonian Dark Earths: explorations in space and time’. (Eds B Glaser, WI Woods) pp. 9–17. (Springer: Berlin/London)

Lehmann J , da Silva P Jr , Rondon M , Cravo MdS , Greenwood J , Nehls T , Steiner C , Glaser B (2002) Slash and char – a feasible alternative for soil fertility management in the central Amazon? In ‘17th World Congress of Soil Science’. Bangkok, Thailand. pp. 1–12. (CD-ROM)

Lehmann J , Joseph S (Eds) (2009) ‘Biochar for environmental management.’ (Earthscan: London)

Lehmann J Kinyangi J Solomon D 2007 Organic matter stabilization in soil microaggregates: implications from spatial heterogeneity of organic carbon contents and carbon forms. Biogeochemistry 85 45 57 doi:10.1007/s10533-007-9105-3

Liang B Lehmann J Solomon D Kinyangi J Grossman J O’Neill B Skjemstad JO Thies J Luizão FJ Petersen J Neves EG 2006 Black carbon increases cation exchange capacity in soils. Soil Science Society of America Journal 70 1719 1730 doi:10.2136/sssaj2005.0383

Lima HN Schaefer CER Mello JWV Gilkes RJ Ker JC 2002 Pedogenesis and pre-Columbian land use of Terra Preta Anthrosols (Indian Black Earth) of Western Amazonia. Geoderma 110 1 17 doi:10.1016/S0016-7061(02)00141-6

Lima IM Marshall WE 2005 Adsorption of selected environmentally important metals by poultry manure-based granular activated carbons. Journal of Chemical Technology and Biotechnology 80 1054 1061 doi:10.1002/jctb.1283

McCann JM , Woods WI , Meyer DW (2001) Organic matter and anthrosols in Amazonia: Interpreting the Amerindian legacy. In ‘Sustainable management of soil organic matter’. (Eds RM Rees BC Ball, CD Campbell, CA Watson) (CABI: New York)

Mok WSL Antal MJ 1983 Effects of pressure on biomass pyrolysis. II. Heats of reaction of cellulose pyrolysis. Thermochimica Acta 68 165 186 doi:10.1016/0040-6031(83)80222-6

Pastorova I Arisz PW Boon JJ 1993 Preservation of d-glucose-oligosaccharides in cellulose chars. Carbohydrate Research 248 151 165 doi:10.1016/0008-6215(93)84123-N

Pastorova I Botto RE Arisz PW Boon JJ 1994 Cellulose char structure: a combined analytical Py-GC-MS, FTIR, and NMR study. Carbohydrate Research 262 27 47 doi:10.1016/0008-6215(94)84003-2

Schaefer CEGR Lima HN Gilkes RJ Mello JWV 2004 Micromorphology and electron microprobe analysis of phosphorous and potassium forms of Indian Black Earth (IBE) Anthrosol from Western Amazonia. Australian Journal of Soil Research 42 401 409 doi:10.1071/SR03106

Sharma RK Wooten JB Baliga VL Lin X Chan WG Hajaligol MR 2004 Characterization of chars from pyrolysis of lignin. Fuel 83 1469 1482 doi:10.1016/j.fuel.2003.11.015

Solomon D Lehmann J Kinyangi J Amelung W Lobe I Ngoze S Riha S Pell A Verchot L Mbugua D Skjemstad J Schäfer T 2007 Long-term impacts of anthropogenic perturbations on the dynamics and molecular speciation of organic carbon in tropical forest and subtropical grassland ecosystems. Global Change Biology 13 511 530 doi:10.1111/j.1365-2486.2006.01304.x

Sombroek W (1966) ‘Amazon Soil: a reconnaissance of the soils of the Brazilian Amazon region.’ (Centre for Agricultural Publications and Documentation: Wageningen)

Steiner C (2006) Slash and char as alternative to slash and burn: English summary. PhD Dissertation, University of Bayreuth, Germany, 2006. Available at: www.biochar.org/joomla/images/stories/SteinerPhDSummary.pdf (accessed 1 December 2009).



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