Synthesis and Dephosphorization of Iron Manganese Composite Oxide by Acid Leaching on Iron Manganese Ore

Abstract:

Fe-Mn composite oxide has been successfully synthesized using manganese ore in Guilin, Guangxi as an effective way to dephosphorize by acid leaching. Studied about the optimum conditions of acid leaching and the dephosphorization of Fe-Mn composite oxide. Process of the sulfuric acid concentration 2.1mol/L, solid-liquid ratio 1:4, reaction time 3.5h, the reaction temperature 90°C, the iron leaching rate of 66% while manganese 93%. Adsorption of phosphorus experiments showed that at oxide dosage 0.1000g, the reaction temperature 20°C, the reaction time 60min, pH 3.0, the phosphorus mass concentration 500ug/L in water sample, the phosphorus removal rate was up to 98.65%, compared to 70% removal rate of 0.5000g natural ore. The comparison of adsorption isotherms between Fe-Mn composite oxide and natural ore showed that in above conditions, the oxide's saturation adsorption quantity was 5.0000mg/g, improved 36.99 times.

• Periodical: Advanced Materials Research (Volumes 554-556)
• Pages: 489-493
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.554-556.489
• Online since: July 2012
• Authors: Ting Ting Kang, Yi Liu, Yong Bing Huang, Jing Dong, Qian Huang, Yu Ying Li
• Keywords: Acid Leaching, Adsorption, Fe-Mn Composite Oxide, Phosphorus Removal

References

[1] Guiyu Zhao .Slag adsorption of phosphorus removal[J].Water treatment technology,2009.35(11): 45-47.

[2] Hano Tetal. Removal of phosphorus from wastewater by ac-tivated alumina adsorbent[J]. Wat.S-ci. Tech, 1997,35 (7): 39 ~ 46.

[3] Wenming Ding ,Liping Zhang. Hydrated lanthanum oxide adsorbed phosphorus removal pilot study [J]. Environmental Science, 2003,5 (24):110-111.

[4] Zhuzhong Tan.2005 Chinese Electrolytic Manganese Metal Industry Review and Outlook[J]. M-anganese ore Industry of China, 2006,24 (2):1-4

[5] Ying Jiang,Wenyong Hu.Manganese acid leaching residue of the static adsorption of vanadium [J]. Guangdong Chemical Engineering, 2011,8 (38) :6-7.

[6] Hong Zhang , Honggang Gao.Process and mechanism of the natural minerals in the water of the Prich phosphorus removal[J]. Natural science into the Exhibition, 2009,19 (6) :652-653.

[7] Orthogonal test design method[J].Science and Technology Information Developmen and Economy, 2002,12 (5) :148-150.

[8] Johansson L.The use of LECA (Light Expanded Clay Aggregates) for the removal of phosphours from water[J]. Water Sci Teehnol, 1997,35 (5): 87-93.

DOI: 10.2166/wst.1997.0171

[9] Cao XD, Harris WG, etal. Inhibition of calcium phosphate precipitation under environmentally relevant conditions [J]. Sci Total Environ. 2007. 383: 205-215.

DOI: 10.1016/j.scitotenv.2007.05.012

[10] Yongbing Huang,Xiaojuan Li.Iron modified manganese adsorption properties of arsenic[J]. Wuhan University of Technology, 2011,9 (33) :118-119.