Abstract
Large-scale bauxite residue (BR) reuse is still a challenge for alumina producers worldwide. Agronomic applications for BR can be a sustainable and economically viable option for soil fertility improvement in countries where agriculture plays a crucial economic role, such as Brazil. This study reports a biological approach to partial BR alkalinity neutralization, allowing its safe application as a soil conditioner for fertility improvement in acidic tropical soils. Microcosm tests were established to assess the effect of incorporating local agro-industrial organic residues into the BR to generate acidity, while highly fertile undisturbed soil was added as a microbial inoculum. BR amendment with organic residues exhibited a fast pH neutralisation (from 10 to 6.5 at the second day of incubation). Results confirmed that the locally available organic residues and the soil added to BR improved its physical and chemical characteristics, allowing further research into its agronomic effects.
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References
Sheng-guo X, Yu-jun W, Yi-wei Li, Xiang-feng K, Feng Z, Hartley W, Xiao-fei L, Yu-zhen Y (2019) Industrial wastes applications for alkalinity regulation in bauxite residue: A comprehensive review. J. Cent. South. Univ. 268–288. https://doi.org/10.1007/s11771-019-4000-3
International Aluminium Institute, Bauxite and Alumina Committee (2010) Alumina Technology Roadmap. http://bauxite.worldaluminium.org/fileadmin/_migrated/content_uploads/fl0000422_02.pdf. Accessed 7 September 2019
Ujaczki É, Feigl V, Molnár M, et al. (2018) Re-using bauxite residues: benefits beyond (critical raw) material recovery: Re-using bauxite residues. J. Chem. Technol. Biotechnol. 93:2498–2510. https://doi.org/10.1002/jctb.5687
Klauber C, Gräfe M, Power G (2011) Bauxite residue issues: II. options for residue utilization. Hydrometallurgy 108:11–32. https://doi.org/10.1016/j.hydromet.2011.02.007
Ujaczki É, Feigl V, Farkas É, et al. (2016) Red mud as acidic sandy soil ameliorant: a microcosm incubation study: Red mud as soil ameliorant. J. Chem. Technol. Biotechnol. 91:1596–1606. https://doi.org/10.1002/jctb.4898
Jones BEH, Haynes RJ, Phillips IR (2010) Effect of amendment of bauxite processing sand with organic materials on its chemical, physical and microbial properties. J. Environ. Manage. 91:2281–2288. https://doi.org/10.1016/j.jenvman.2010.06.013
Courtney R, Harrington T (2012) Growth and nutrition of Holcus lanatus in bauxite residue amended with combinations of spent mushroom compost and gypsum. Land Degrad. Dev. 23:144–149. https://doi.org/10.1002/ldr.1062
Santini TC, Warren K, Raudsepp M, et al. (2019) Accelerating bauxite residue remediation with microbial biotechnology. In: Chesonis C (ed) Light Met. 2019. Springer International Publishing, Cham. 69–77
Bray AW, Stewart DI, Courtney R, et al. (2018) Sustained bauxite residue rehabilitation with gypsum and organic matter 16 years after initial treatment. Environ. Sci. Technol. 52:152–161. https://doi.org/10.1021/acs.est.7b03568
Santini TC, Malcolm LI, Tyson GW, Warren LA (2016) pH and organic carbon dose rates control microbially driven bioremediation efficacy in alkaline bauxite residue. Environ. Sci. Technol.50:11164–11173. https://doi.org/10.1021/acs.est.6b01973
Santini TC, Peng YG (2017) Microbial fermentation of organic carbon substrates drives rapid ph neutralization and element removal in bauxite residue leachate. Environ. Sci. Technol. 51:12592–12601. https://doi.org/10.1021/acs.est.7b02844
Hamdy MK, Williams FS (2001) Bacterial amelioration of bauxite residue waste of industrial alumina plants. J. Ind. Microbiol. Biotechnol. 27:228–233. https://doi.org/10.1038/sj.jim.7000181
Silva PMP, Lucheta AR, Bitencourt JAP, et al. (2019) Covellite (CuS) production from a real acid mine drainage treated with biogenic H2S. Metals. 9:206. https://doi.org/10.3390/met9020206
Khoo LE, Morsingh F, Liew KY (1979) The adsorption of/3-carotene i. by bleaching earths. J. Am. Oil Chem. Soc. 56.7 (1979): 672–675
Silva, PMP, Carmo, ALV, Holanda, R, et al. (2019) Brazilian bauxite residue physical-chemical characterization and acidic neutralization potential. Light Met. This issue
Dong Y, Shao Y, Liu A, et al. (2019) Insight of soil amelioration process of bauxite residues amended with organic materials from different sources. Environ. Sci. Pollut. Res. https://doi.org/10.1007/s11356-019-06007-y
Acknowledgements
The authors are grateful for the financial support for this study by Hydro Alunorte S/A and all technical and logistical support from Hydro’s R&D team. The author also thanks Juliano Rodrigo de Paula, Industrial Manager of Biopalma S/A, for providing the Palm Oil Processing by-products, and Museu Paraense Emílio Goeldi for providing the soil samples used in this study.
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Holanda, R.B. et al. (2020). Bayer Process Towards the Circular Economy—Soil Conditioners from Bauxite Residue. In: Tomsett, A. (eds) Light Metals 2020. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36408-3_15
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DOI: https://doi.org/10.1007/978-3-030-36408-3_15
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