Removal of trace and major metals by soil washing with Na2EDTA and oxalate

Autor:	Tao Zhang, Hanying Dong, Rongliang Qiu, Zeli Zou, Weihua Zhang, Xiange Wei, Zhi-Hao Zhao
Rok vydání:	2009
Předmět:	Cadmium Chemistry Stratigraphy Extraction (chemistry) Inorganic chemistry Cationic polymerization chemistry.chemical_element Zinc Oxalate chemistry.chemical_compound Adsorption Reagent Arsenic Earth-Surface Processes
Zdroj:	Journal of Soils and Sediments. 10:45-53
ISSN:	1614-7480 1439-0108
DOI:	10.1007/s11368-009-0083-z
Popis:	Background, aim, and scope Various metals such as cationic metals (Cu, Pb, Zn) and anionic metals (As, Cr) often coexist in real soils, and normal soil washing techniques for the removal of cationic metals with a single-washing reagent make it rather difficult to simultaneously remove all of them. Oxalate could effectively remove anionic As and EDTA could effectively remove the cationic metals, so it was possible to remove all coexisting cationic and anionic metals by washing with the combination of Na2EDTA and oxalate. The objective of this study was to (1) discuss the possibility of removing five metals, As, Cd, Cu, Pb, and Zn, effectively from the soil by washing with Na2EDTA-combined oxalate; (2) optimized through the consecutive washing.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cb8ef1a46c47e4c7fbfaed598d7f367c https://doi.org/10.1007/s11368-009-0083-z Zobrazit plný text záznamu Full text from SpringerLink