Distribution of soluble iron and zinc in leachates of municipal   wastes

Ofira Ayalon; Boaz Nishri; Yoram Avnimelech

doi:10.1007/978-94-011-3294-7_5

Distribution of soluble iron and zinc in leachates of municipal wastes

Ofira Ayalon, Boaz Nishri, Yoram Avnimelech

School of Environmental Sciences

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

Leachates from sanitary landfills contain high concentrations of heavy metals. The potential pollution of groundwater by such leachates depends on the mobility of these metals. The metal’s mobility depends, to a large extent, on the size distribution of the ‘soluble’ heavy metal species, defined conventionally as being below 0.45 μ m. A dialysis membrane equilibration technique was used to determine the size distribution of ‘soluble’ Fe in such solutions and factors affecting it.

About 50% of the Fe precipitated out in an acidified solution, probably as Fe-humate. The oxidation of the humic material by H2O2 led to a marked increase in the low molecular size fraction. Another immobile fraction separated by the dialysis membrane was probably Fe(OH)3 colloidal particles. A complete mobilization of Fe was obtained with a combined treatment of H2O2 and HCl acidification.

Unlike Fe, most of the soluble Zn passed through the dialysis membrane. Acidification of the solution led to a complete mobilization of the Zn indicating that Zn binding to humic colloids is of low stability.

Original language	English
Title of host publication	Iron Nutrition and Interactions in Plants
Editors	Y. Chen , Y. Hadar
Publisher	Springer
Pages	53–56
ISBN (Electronic)	9789401132947
ISBN (Print)	9789401054553, 9780792310952
DOIs	https://doi.org/10.1007/978-94-011-3294-7_5
State	Published - 1991

Publication series

Name	Developments in Plant and Soil Sciences
Volume	43

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1007/978-94-011-3294-7_5

Cite this

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title = "Distribution of soluble iron and zinc in leachates of municipal wastes",

abstract = "Leachates from sanitary landfills contain high concentrations of heavy metals. The potential pollution of groundwater by such leachates depends on the mobility of these metals. The metal{\textquoteright}s mobility depends, to a large extent, on the size distribution of the {\textquoteleft}soluble{\textquoteright} heavy metal species, defined conventionally as being below 0.45 μ m. A dialysis membrane equilibration technique was used to determine the size distribution of {\textquoteleft}soluble{\textquoteright} Fe in such solutions and factors affecting it.About 50% of the Fe precipitated out in an acidified solution, probably as Fe-humate. The oxidation of the humic material by H2O2 led to a marked increase in the low molecular size fraction. Another immobile fraction separated by the dialysis membrane was probably Fe(OH)3 colloidal particles. A complete mobilization of Fe was obtained with a combined treatment of H2O2 and HCl acidification.Unlike Fe, most of the soluble Zn passed through the dialysis membrane. Acidification of the solution led to a complete mobilization of the Zn indicating that Zn binding to humic colloids is of low stability.",

author = "Ofira Ayalon and Boaz Nishri and Yoram Avnimelech",

year = "1991",

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series = "Developments in Plant and Soil Sciences",

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TY - CHAP

T1 - Distribution of soluble iron and zinc in leachates of municipal wastes

AU - Ayalon, Ofira

AU - Nishri, Boaz

AU - Avnimelech, Yoram

PY - 1991

Y1 - 1991

N2 - Leachates from sanitary landfills contain high concentrations of heavy metals. The potential pollution of groundwater by such leachates depends on the mobility of these metals. The metal’s mobility depends, to a large extent, on the size distribution of the ‘soluble’ heavy metal species, defined conventionally as being below 0.45 μ m. A dialysis membrane equilibration technique was used to determine the size distribution of ‘soluble’ Fe in such solutions and factors affecting it.About 50% of the Fe precipitated out in an acidified solution, probably as Fe-humate. The oxidation of the humic material by H2O2 led to a marked increase in the low molecular size fraction. Another immobile fraction separated by the dialysis membrane was probably Fe(OH)3 colloidal particles. A complete mobilization of Fe was obtained with a combined treatment of H2O2 and HCl acidification.Unlike Fe, most of the soluble Zn passed through the dialysis membrane. Acidification of the solution led to a complete mobilization of the Zn indicating that Zn binding to humic colloids is of low stability.

AB - Leachates from sanitary landfills contain high concentrations of heavy metals. The potential pollution of groundwater by such leachates depends on the mobility of these metals. The metal’s mobility depends, to a large extent, on the size distribution of the ‘soluble’ heavy metal species, defined conventionally as being below 0.45 μ m. A dialysis membrane equilibration technique was used to determine the size distribution of ‘soluble’ Fe in such solutions and factors affecting it.About 50% of the Fe precipitated out in an acidified solution, probably as Fe-humate. The oxidation of the humic material by H2O2 led to a marked increase in the low molecular size fraction. Another immobile fraction separated by the dialysis membrane was probably Fe(OH)3 colloidal particles. A complete mobilization of Fe was obtained with a combined treatment of H2O2 and HCl acidification.Unlike Fe, most of the soluble Zn passed through the dialysis membrane. Acidification of the solution led to a complete mobilization of the Zn indicating that Zn binding to humic colloids is of low stability.

U2 - 10.1007/978-94-011-3294-7_5

DO - 10.1007/978-94-011-3294-7_5

M3 - Chapter

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SN - 9780792310952

T3 - Developments in Plant and Soil Sciences

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BT - Iron Nutrition and Interactions in Plants

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PB - Springer