Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H2SO4

›› 2010, Vol. 18 ›› Issue (5): 730-735.

Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H₂SO₄

粟海锋¹, 刘怀坤¹, 王凡¹, 吕小艳², 文衍宣¹

1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;
2. Educational Administration Department, Guangxi University, Nanning 530004, China

收稿日期:2010-02-24 修回日期:2010-05-02 出版日期:2010-10-28 发布日期:2010-10-28
通讯作者: WEN Yanxuan,E-mail:wenyanxuan@vip.163.com
基金资助:
Supported by the National Natural Science Foundation of China (20866001);the Natural Science Foundation of GuangxiProvince (0832035)

Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H₂SO₄

SU Haifeng¹, LIU Huaikun¹, WANG Fan¹, LÜXiaoyan², WEN Yanxuan¹

1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;
2. Educational Administration Department, Guangxi University, Nanning 530004, China

Received:2010-02-24 Revised:2010-05-02 Online:2010-10-28 Published:2010-10-28
Supported by:
Supported by the National Natural Science Foundation of China (20866001);the Natural Science Foundation of GuangxiProvince (0832035)

摘要/Abstract

摘要： The kinetics of reductive leaching of manganese from low grade pyrolusite in dilute sulfuric acid in the presence of molasses alcohol wastewater was investigated. The shrinking core model was applied to quantify the effects of reaction parameters on leaching rate. The leaching rate increases with reaction temperature, concentrations of H₂SO₄ and organic matter in molasses alcohol wastewater increase and ore particle size decreases. The leaching process follows the kinetics of a shrinking core model and the apparent activation energy is 57.5 kJ·mol^-1. The experimental results indicate a reaction order of 0.52 for H₂SO₄ concentration and 0.90 for chemical oxygen demand (COD) of molasses alcohol wastewater. It is concluded that the reductive leaching of pyrolusite with molasses alcohol wastewater is controlled by the diffusion through the ash/inert layer composed of the associated minerals.

关键词: pyrolusite, molasses alcohol wastewater, reductive leaching, kinetics

Abstract: The kinetics of reductive leaching of manganese from low grade pyrolusite in dilute sulfuric acid in the presence of molasses alcohol wastewater was investigated. The shrinking core model was applied to quantify the effects of reaction parameters on leaching rate. The leaching rate increases with reaction temperature, concentrations of H₂SO₄ and organic matter in molasses alcohol wastewater increase and ore particle size decreases. The leaching process follows the kinetics of a shrinking core model and the apparent activation energy is 57.5 kJ·mol^-1. The experimental results indicate a reaction order of 0.52 for H₂SO₄ concentration and 0.90 for chemical oxygen demand (COD) of molasses alcohol wastewater. It is concluded that the reductive leaching of pyrolusite with molasses alcohol wastewater is controlled by the diffusion through the ash/inert layer composed of the associated minerals.

Key words: pyrolusite, molasses alcohol wastewater, reductive leaching, kinetics

粟海锋, 刘怀坤, 王凡, 吕小艳, 文衍宣. Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H₂SO₄[J]. , 2010, 18(5): 730-735.

SU Haifeng, LIU Huaikun, WANG Fan, LÜXiaoyan, WEN Yanxuan. Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H₂SO₄[J]. , 2010, 18(5): 730-735.

参考文献

1 Sahoo, P.K., Srinivasa, R.K., “Sulphating-roasting of low grade manganese ore:Optimisation by factorial design”, Int. J. Miner. Process, 25 (1-2), 147-152 (1989).
2 Jiang, T., Yang, Y., Huang, Z., Zhang, B., Qiu, G., “Leaching kinetics of pyrolusite from manganese-silver ores in the presence of hydrogen peroxide”, Hydrometallurgy, 72 (1-2), 129-138 (2004).
3 Das, S.C., Sahoo, P.K., Rao, P.K., “Extraction of manganese from lowgrade manganese ores by FeSO₄ leaching”, Hydrometallurgy, 8 (1), 35-47 (1982).
4 Abbruzzese, C., “Percolating leaching of manganese ores by aqueous sulphur dioxide”, Hydrometallurgy, 25 (1), 85-97 (1990).
5 Naik, P.K., Sukla, L.B., Das, S.C., “Aqueous SO2 leaching studies on Nishikhal manganese ore through factorial experiment”, Hydrometallurgy, 54 (2-3), 217-228 (2000).
6 Veglio, F., Toro, L., “Fractional factorial experiments in the development of manganese dioxide leaching by sucrose in sulphuric acid solutions”, Hydrometallurgy, 36 (2), 215-230 (1994).
7 Chen, H.H., Fu, C., Zheng, D.J., “Reduction leaching of manganese nodules by nickel matte in hydrochloric acid solution”, Hydrometallurgy, 28 (2), 269-275 (1992).
8 Kanungo, S.B., “Rate process of the reduction leaching of manganese nodules in dilute HCl in presence of pyrite (1) Dissolution behavior of iron and sulphur species during leaching”, Hydrometallurgy, 52 (3), 313-330 (1999).
9 El Hazek, M.N., Lasheen, T.A., Helal, A.S., “Reductive leaching of manganese from low grade Sinai ore in HCl using H₂O2 as reductant”, Hydrometallurgy, 84 (3-4), 187-191 (2006).
10 Pagnanelli, F., Garavini, M., Vegliò, F., Toro, L., “Preliminary screening of purification processes of liquor leach solutions obtained from reductive leaching of low-grade manganese ores”, Hydrometallurgy, 71 (3-4), 319-327 (2004).
11 Trifoni, M., Veglió, F., Taglieri, G., Toro, L., “Acid leaching process by using glucose as reducing agent:A comparison among the efficiency of different kinds of manganiferous ores”, Miner. Eng., 13 (2), 217-221 (2000).
12 Veglio, F., Trifoni, M., Pagnanelli, F., Toro, L., “Shrinking core model with variable activation energy:A kinetic model of manganiferous ore leaching with sulphuric acid and lactose”, Hydrometallurgy, 60 (2), 167-179 (2001).
13 Trifoni, M., Toro, L., Veglió, F., “Reductive leaching of manganiferous ores by glucose and H₂SO₄ :Effect of alcohols”, Hydrometallurgy, 59 (1), 1-14 (2001).
14 Lasheen, T.A., El Hazek, M.N., Helal, A.S., “Kinetics of reductive leaching of manganese oxide ore with molasses in nitric acid solution”, Hydrometallurgy, 98 (3-4), 314-317 (2009).
15 Satyawali, Y., Balakrishnan, M., “Wastewater treatment in molasses-based alcohol distilleries for COD and color removal:A review”, J. Envir. Manag., 86 (3), 481-497 (2008).
16 Su, H., Wen, Y.X., Wang, F., Li, X., Tong, Z., “Leaching of pyrolusite using molasses alcohol waste water as reductant”, Miner. Eng., 22 (2), 207-209 (2009).
17 Su, H., Li, K., Wen, Y., Tong, Z., “Decolorization and degradation of molasses alcohol waste water by using pyrolusite as oxidant”, Chem. Eng. (China), 37 (6), 66-70 (2009). (in Chinese).
18 Miller, J.D., Wan, R.Y., “Reaction kinetics for the leaching of MnO2 by sulfur dioxide”, Hydrometallurgy, 10 (2), 219-242 (1983).
19 Tekin, T., Bayramoglu, M., “Kinetics of the reduction of MnO₂ with Fe²⁺ in acidic solutions”, Hydrometallurgy, 32 (1), 9-20 (1993).
20 Momade, F.W.Y., Momade, Zs.G., “A study of the kinetics of reductive leaching of manganese oxide ore in aqueous methanol-sulphuric acid medium”, Hydrometallurgy, 54 (1), 25-39 (1999).
21 Takaichi S., “Studies on the colored components in cane final molasses”, Proc. Res. Soc. Japan Sugar, 40 (2), 57-63 (1992).
22 Levenspiel, O., Chemical Reaction Engineering, 3rd edition, Wiley & Sons, New York, 566-588 (1999).
23 Zhou, H.M., Zheng, S.L., Zhang, Y., “Kinetics investigation on the of niobium from a low-grade niobium-tantalum ore by concentrated KOH solution”, Chin. J. Chem. Eng., 12 (2), 202-207 (2004).
24 Li, Y.X., Zhang, S.B., Guo, H.X., “Application of the shrinking core model to the kinetics of zinc oxide desulfurization”, Chin. J. Chem. Eng., 5 (4), 296-303 (1997).

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Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H₂SO₄

Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H₂SO₄

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