Phosphate ore washing by Na2EDTA for cadmium removal: Optimization of the operating conditions

• Autorzy: Benredjem Z. , Delimi R. , Khelalfa A.
• Języki publikacji: EN

Abstrakty

EN

This paper discusses the extraction of cadmium from phosphate ore by the washing method. Various parameters were investigated for the cadmium extraction from phosphate ore. The results from extraction tests showed that cadmium extraction depends on the nature and concentration of the extracting agent, the liquid/phosphate ore ratio, the temperature and the solution pH. The effi ciency of the nine extracting agents for removing cadmium from phosphate ore was found to be in the order: Na2EDTA > citric acid > tartric acid > ammonium citrate > calcium chloride > ammonium acetate > ammonium chloride > oxalic acid > ammonium hydroxide. In this study cadmium extraction kinetics was best described by the product layer diffusion control model.

Słowa kluczowe

EN

phosphate ore washing; cadmium; environment; extraction; chemical processes; optimization

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2012
• Tom: Vol. 14, nr 3
• Strony: 15--20
• Opis fizyczny: Bibliogr. 25 poz., rys., wykr., tab.

Twórcy

autor

Benredjem Z.

autor

Delimi R.

autor

Khelalfa A.

• University Badji Mokhtar Annaba, Laboratory of water treatment and valorization of industrial wastes, Chemistry Departmemt, Faculty of Sciences,

Bibliografia

• 1. International Fertilizer Industry Association (IFA). (2005). http://www.fertilizer.org/ifa/statistics/indicators/ind_products. asp.
• 2. Kuboi, T., Nogochi, A. & Yazaki, J. (1986). Family-dependent cadmium accumulation characteristics in higher plants, Plant Soil. 92, 405-415. DOI: 10.1007/BF02372488.
• 3. Tudoreanu, L.C. & Phillips, C.J. (2004). Modeling Cadmium Uptake and Accumulation in Plants, Advances in Agronomy. 84, 121-157. DOI: 10.1016/S0065-2113(04)84003-3.
• 4. Mordvet, J.J. & Osborn, G. (1982). Studies on the chemical form of cadmium contaminants in phosphate fertilizers. Soil Sci. 134, 185-192.
• 5. Lambert, R., Grant, C. & Sauvé, S. (2007). Cadmium and zinc in soil solution extracts following the application of phosphate fertilizers. Sci. Total Environ. 378, 293-305. DOI:10.1016/j.scitotenv.2007.02.008.
• 6. Makino, T., Sugahara, K., Sakuraia, Y., Takano, H., Kamiyab, T., Sasakib, K., Itouc, T. & Sekiyac, N. (2006). Remediation of cadmium contamination in paddy soils by washing with chemicals: Selection of washing chemicals, Environmental Pollution. 144, 2-10. DOI:10.1016/j.envpol.2006.01.017.
• 7. Beesley, L., Moreno-Jimenez, E., Clemente, R., Lepp, N. & Dickinson, N. (2010). Mobility of arsenic, cadmium and zinc in a multi-element contaminated soil profile assessed by in-situ soil pore water sampling, column leaching and sequential extraction, Environmental Pollution. 158, 155-160. DOI:10.1016/j.envpol.2009.07.021
• 8. Tang, X., Katou, H., Suzuki, K., Ohtani, T. (2011). Air- -drying and liming effects on exchangeable cadmium mobilization in contaminated soils: A repeated batch extraction study. Geoderma. 161, 18-29. DOI:10.1016/j.geoderma.2010.11.012
• 9. Kossoff, D., Hudson-Edwards, K.A., Dubbin, W.E. & Alfredsson, M.A. (2011). Incongruent weathering of Cd and Zn from mine tailings: A column leaching study. Chemical Geology. 281, 52-71. DOI:10.1016/j.chemgeo.2010.11.028.
• 10. Livera, J., McLaughlin, M.J., Hettiarachchi, G.M., Kirby, J.K. & Beak, D.G . (2011). Cadmium solubility in paddy soils: Effects of soil oxidation, metal sulfides and competitive ions. Science of the Total Environment. 409, 1489-1497. DOI: 10.1016/j.scitotenv.2010.12.028.
• 11. Manouchehri, N., Besançon, S. & Bermond, A. (2011). Kinetic characterizing of soil trace metal availability using Soil/EDTA/Chelex mixture. Chemosphere. 83, 997-1004. DOI: 10.1016/j.chemosphere.2011.02.010.
• 12. XP P 94-047. (1998 décembre) : Sols : Reconnaissanceet Essais - Détermination de la teneur pondérale en matièreorganique - Méthode par calcination.
• 13. Zou, Z., Qiu, R., Zhang, W., Dong, H., Zhao, Z., Zhang, T., Wei, X. & Cai, X. (2009). The study of operating variables in soil washing with EDTA, Environ. Pollut. 157, 229-236. DOI:10.1016/j.envpol.2008.07.009.
• 14. Tessier, A., Campbell, P.G.C. & Bisson, M. (1979). Sequential extraction procedure for the speciation of particulate trace metals, Anal. Chem. 51, 844-851. DOI: 10.1021/ac50043a017.
• 15. Elliott, H.A. & Shastri, N.L.(1999). Extractive decontamination of metal polluted soils using oxalate, Water Air Soil Pollut. 110, 335-346. DOI: 10.1023/A:1005067404259.
• 16. Wasay, S.A., Parker, W.J. & Van Geel, P.J. (2001). Contamination of metal a calcareous soil by battery industry wastes. II. Treatment, Can. J. Civil Eng. 28, 349-354. 10.1139/l00-118.
• 17. Lim, T.T. & Goh, J.H. (2005). Process evaluation for optimization of EDTA use and recovery for heavy metal removal from a contaminated soil, Chemosphere. 58, 1031-1040. DOI:10.1016/j.chemosphere.2004.09.046.
• 18. Ehsan, S., Prasher, S.O. & Marshall, W.D. (2006). A washing procedure to mobilize mixed- contaminants from soil. II. Heavy metals, J. Environ. Qual. 35, 2084-2091. Pub Med ID 17071877.
• 19. Dipalma, L. & Mccozzi, R. (2007). Heavy metals mobilisation from harbour sediments using EDTA and citric acid as chelating agents, J. Hazard. Materials. 147, 768-775. DOI:10.1016/j.jhazmat.2007.01.072.
• 20. Dermont, G., Bergeron, M., Mercier, G. & Richer- Laflèche, M. (2008). Soil washing for metal removal: A review of physical/chemical technologies and fi eld applications, J. Hazard.Materials. 152, 1-31. DOI: DOI:10.1016/j.jhazmat.2007. 10.043.
• 21. European commission. (2005) - directive n° 2005/87/Ce of commission of December 2005, Official Journal of European Union, l318/19-l318/24.
• 22. Peters, R.W. (1999). Chelatant extraction of heavy metals from contaminated soils, J. Hazard. Materials. 66, 151-210. DOI:10.1016/S0304-3894(99)00010-2.
• 23. Sun, B., Zhao, F.J., Lombi, E., Megrath, S.P. (2001). Leaching of heavy metals from contaminated soils using EDTA, Environ. Pollut. 113, 111-120. DOI:10.1016/S0269- 7491(00)00176-7.
• 24. Levenspiel, O., Chemical Reaction Engineering, (1999). 3rd eds. Wiley, J., and Sons. New York.