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Effect of Goethite on Migration of Cadmium in Soil of Abandoned Zinc Smelting Site
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Zilun GAO, Chiyue HUANG, Zhaohui GUO, Rui XU, Xuechao LIANG, Linjian ZHONG, Chi PENG
Mining and Metallurgical Engineering | 2023, 43(6) : 100 - 106
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Mining and Metallurgical Engineering | 2023, 43(6): 100-106
• METALLURGY •
Effect of Goethite on Migration of Cadmium in Soil of Abandoned Zinc Smelting Site
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Zilun GAO, Chiyue HUANG, Zhaohui GUO, Rui XU, Xuechao LIANG, Linjian ZHONG, Chi PENG
Affiliations
  • School of Metallurgy and Environment, Central South University, Changsha 410083, Hunan, China
Published: 2023-12-01 doi: 10.3969/j.issn.0253-6099.2023.06.022
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The pollution of heavy metals in the soil of a zinc smelting site was analyzed, and the influence mechanism of goethite on cadmium migration in the soil was discussed by performing simulation experiments. The results show that the geometric mean values of As, Cd, Cu, Hg and Pb in zinc smelting site soil are 15.9 mg/kg, 1.52 mg/kg, 62.1 mg/kg, 0.108 mg/kg and 167 mg/kg respectively. The average content of Cd is 11.7 times the general value of soil in Hunan Province. It is shown that Cd in the soil has strong migration, and can be infiltrated down to the depth of 6 m or more of the soil. The results of stochastic forest model analysis show that Cd migration in the soil is mainly affected by goethite and silt. Cd in the soil can be adsorbed by goethite and then migrated. The pH value and ionic strength of leachate obviously affect the migration of Cd by goethite in the soil. When the pH of leachate is 6 and the ionic strength is 1 mmol/L, 37.6% of Cd in the soil can be migrated by goethite. Adjusting the pH value and salt ions concentration of soil can change the migration of Cd by goethite in the soil. As a result, the risk of pollution by heavy metals such as Cd in the soil of zinc smelting site can be controlled.

zinc smelting site  /  heavy metals pollution  /  cadmium  /  migration  /  goethite  /  soil pollution  /  ionic strength
Zilun GAO, Chiyue HUANG, Zhaohui GUO, Rui XU, Xuechao LIANG, Linjian ZHONG, Chi PENG. Effect of Goethite on Migration of Cadmium in Soil of Abandoned Zinc Smelting Site[J]. Mining and Metallurgical Engineering, 2023 , 43 (6) : 100 -106 . DOI: 10.3969/j.issn.0253-6099.2023.06.022
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Year 2023 volume 43 Issue 6
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doi: 10.3969/j.issn.0253-6099.2023.06.022
  • Receive Date：2023-06-06
  • Online Date：2026-03-05
  • Published：2023-12-01
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  • Received：2023-06-06
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    School of Metallurgy and Environment, Central South University, Changsha 410083, Hunan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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