A Comparative Study of Ferric Nitrate and Citric Acid in Washing Heavy Metal-Contaminated Soil

2021 ◽  
Author(s):  
Zhihong Guo ◽  
Shuqin Zhang ◽  
Dajun Ren ◽  
Xiaoqing Zhang ◽  
Shuang Liu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Citric Acid ◽  
Comparative Study ◽  
Contaminated Soil ◽  
Ferric Nitrate

Comparative study on washing effects of different washing agents and conditions on heavy metal contaminated soil

2021 ◽  
pp. 101563
Author(s):  
Zhihua Zhu ◽  
Jianle Wang ◽  
Xueqiang Liu ◽  
Le Yuan ◽  
Xueming Liu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Comparative Study ◽  
Contaminated Soil

The role of citric acid on the phytoremediation of heavy metal contaminated soil

Chemosphere ◽  
2003 ◽  
Vol 50 (6) ◽  
pp. 807-811 ◽  
Author(s):  
Y.X Chen ◽  
Q Lin ◽  
Y.M Luo ◽  
Y.F He ◽  
S.J Zhen ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Citric Acid ◽  
Contaminated Soil

scholarly journals Application of nanoscale zero-valent iron in hexavalent chromium-contaminated soil: A review

2020 ◽  
Vol 9 (1) ◽  
pp. 736-750
Author(s):  
Xilu Chen ◽  
Xiaomin Li ◽  
Dandan Xu ◽  
Weichun Yang ◽  
Shaoyuan Bai
Keyword(s):  
Heavy Metal ◽  
Hexavalent Chromium ◽  
Contaminated Soil ◽  
Zero Valent Iron ◽  
Toxic Heavy Metal ◽  
Factors Affecting ◽  
Metal Pollutants ◽  
Nanoscale Zero Valent Iron ◽  
Low Toxicity ◽  
Heavy Metal Pollutants

AbstractChromium (Cr) is a common toxic heavy metal that is widely used in all kinds of industries, causing a series of environmental problems. Nanoscale zero- valent iron (nZVI) is considered to be an ideal remediation material for contaminated soil, especially for heavy metal pollutants. As a material of low toxicity and good activity, nZVI has been widely applied in the in situ remediation of soil hexavalent chromium (Cr(vi)) with mobility and toxicity in recent years. In this paper, some current technologies for the preparation of nZVI are summarized and the remediation mechanism of Cr(vi)-contaminated soil is proposed. Five classified modified nZVI materials are introduced and their remediation processes in Cr(vi)-contaminated soil are summarized. Key factors affecting the remediation of Cr(vi)-contaminated soil by nZVI are studied. Interaction mechanisms between nZVI-based materials and Cr(vi) are explored. This study provides a comprehensive review of the nZVI materials for the remediation of Cr(vi)-contaminated soil, which is conducive to reducing soil pollution.

Ultrasound-Assisted Citric Acid Extraction of Zinc in Plateau Red Soil and Tessier Speciation Study

2013 ◽  
Vol 726-731 ◽  
pp. 4464-4467
Author(s):  
Wei Wei ◽  
Xue Jin Zhou ◽  
Yun Tao Gao
Keyword(s):  
Heavy Metal ◽  
Citric Acid ◽  
Manganese Oxides ◽  
Red Soil ◽  
Extraction Rate ◽  
Acid Extraction ◽  
Speciation Study ◽  
Ultrasonic Assisted ◽  
Ultrasound Assisted ◽  
Iron And Manganese

Taking plateau red soil as research object, using the ultrasonic-assisted organic acid extraction the heavy metal zinc in it, and analyze the form of zinc. Results showed that the extraction rate can reach 68%, with the increase of time, the extraction effect of zinc is obviously enhanced in this method. Ultrasonic-assisted citric acid extraction soil can increase the extraction rate of exchangeable, bound to carbonates and bound to iron and manganese oxides relatively.

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