Remediation of Cadmium Contaminated Paddy Fields Using Soil Conditioners

被引：4

作者：

Zhou L.-J. ^{[1
]}

Wu L. ^{[1
]}

Lin X.-B. ^{[1
]}

Wang H.-M. ^{[2
]}

Liu H. ^{[2
]}

Zhang H.-Y. ^{[2
]}

Hu M. ^{[3
]}

Shi L.-P. ^{[3
]}

Zhang Y. ^{[4
]}

Huang Q.-R. ^{[1
]}

机构：

[1] National Red Soil Improvement Engineering Technology Research Center, Jiangxi Institute of Red Soil, Jinxian

[2] Agricultural Ecology and Resource Protection Station of Jiangxi, Nanchang

[3] Agricultural Bureau of Pingxiang, Pingxiang

[4] Tiangong Fangyuan Construcion Group, Xinyu

来源：

Huanjing Kexue/Environmental Science | 2019年 / 40卷 / 11期

关键词：

Brown rice; Cadmium pollution; Physical and chemical properties; Remediation; Soil conditioner;

D O I：

10.13227/j.hjkx.201905053

中图分类号：

学科分类号：

摘要：

Four soil conditioners, SAMMNS, CCT01, Mineral, and Tebeigai were selected for this study. The effects of the four conditioners on soil pH, bulk density, organic matter, available nutrients, texture, microaggregates, Cd available in soil, and Cd content in brown rice were investigated using field-controlled cadmium tests conducted in cadmium-contaminated paddy fields in Pingxiang. The results showed that compared to the control, soil conditioners could increase pH, bulk density, and cation exchange capacity in soil. SAMMNS and CCT01 soil conditioners increased the amount of silt and clay, but that of sand decreased, whereas the Mineral and Tebeigai soil conditioners decreased silt and clay, and sand increased. In addition to the CCT01 soil conditioner, the application of soil conditioners increased large-scale agglomerates and reduced small-scale microaggregates. The effects of soil conditioners on soil physical and chemical properties promoted the conversion of Cd from contaminated soil from high activity to low activity, which reduced available Cd content in soil (5.21%-34.78%) and Cd content in brown rice (51.39%-68.06%). Correlation analysis showed that Cd content in brown rice was significantly positively correlated with available Cd and available phosphorus in soil, whereas it was negatively correlated with pH and bulk density in soil. Considering the effects of soil and brown rice on cadmium reduction and physicochemical properties, Tebeigai soil conditioner exhibited the best repair effects, followed by SENMES and Mineral soil conditioner. © 2019, Science Press. All right reserved.

引用

页码：5098 / 5106

页数：8

共 42 条

[11] Guo G.L., Zhou Q.X., Ma L.Q., Availability and assessment of fixing additives for the in situ remediation of heavy metal contaminated soils: a review, Environmental Monitoring and Assessment, 116, 1-3, pp. 513-528, (2006)
[12] Guo X.F., Wei Z.B., Zhou J.L., Et al., Effect of waste-CaCO<sub>3</sub> on heavy metals uptake of low-accumulating maize: Field study, Acta Pedologica Sinica, 47, 5, pp. 888-895, (2010)
[13] Cao X.D., Wei X.X., Dai G.L., Et al., Combined pollution of multiple heavy metals and their chemical immobilization in contaminated soils: a review, Chinese Journal of Environmental Engineering, 5, 7, pp. 1441-1453, (2011)
[14] Nawab J., Khan S., Aamir M., Et al., Organic amendments impact the availability of heavy metal(loid)s in mine-impacted soil and their phytoremediation by Penisitum americanum and Sorghum bicolor, Environmental Science and Pollution Research, 23, 3, pp. 2381-2390, (2016)
[15] Dai Y.C., Lu J.L., Cao Y.F., Et al., Effects of lime and organic amendments on Cd availability in Cd-contaminated soils with different properties, Journal of Agro-Environment Science, 33, 3, pp. 514-519, (2014)
[16] Ramirez-Perez A.M., Paradelo M., Novoa-Munoz J.C., Et al., Heavy metal retention in copper mine soil treated with mussel shells: batch and column experiments, Journal of Hazardous Materials, 248-249, pp. 122-130, (2013)
[17] Du Z.M., Hao J.S., Zhou J., Et al., Field in-situ remediation of Cu-Cd polluted soil by four amendments, Acta Pedologica Sinica, 49, 3, pp. 508-517, (2012)
[18] Ren J.H., Liao Q.L., Fan J., Et al., Effectof in-situ stabilizing remediation of Cd-polluted soil by attapulgite, Ecology and Environmental Sciences, 26, 12, pp. 2161-2168, (2017)
[19] Li X., Lin D.S., Liu Y., Et al., Effects of different soil conditioners on cadmium control in cadmium-contaminated paddy fields, Journal of Agro-Environment Science, 37, 7, pp. 1511-1520, (2018)
[20] Wang X.H., Guo Z.H., Heavy metal polluted crystallization encapsulated stabilizing agent and its application method

← 1 2 3 4 5 →