Removal of chromates from drinking water by anion exchangers

E. Korngold; N. Belayev; L. Aronov

doi:10.1016/S1383-5866(03)00006-6

Removal of chromates from drinking water by anion exchangers

E. Korngold, N. Belayev, L. Aronov

Research output: Contribution to journal › Article › peer-review

72 Scopus citations

Abstract

Strong-base anion-exchange resins were used for selective removal of Cr(VI) from tap water. The influence on the process efficiency of parameters, such as the type of anion-exchange resin, the concentrations of Cl^- and SO₄^2- in the feed water, and the flow rate and pH of the feed water, was investigated. Regeneration was carried out by the reduction of the chromate with bisulfite under acidic conditions and the subsequent removal of the Cr from the column as the Cr³⁺ cation. The pH of the regenerant solution was then increased, causing Cr(OH)₃ to precipitate, and the precipitate was removed by filtration.

Original language	English
Pages (from-to)	179-187
Number of pages	9
Journal	Separation and Purification Technology
Volume	33
Issue number	2
DOIs	https://doi.org/10.1016/S1383-5866(03)00006-6
State	Published - 1 Oct 2003

Keywords

Cr removal
Selective resin
Tap water treatment

ASJC Scopus subject areas

Analytical Chemistry
Filtration and Separation

Access to Document

10.1016/S1383-5866(03)00006-6

Cite this

@article{1596ccebf4d5460385efebf4c98d8ee8,

title = "Removal of chromates from drinking water by anion exchangers",

abstract = "Strong-base anion-exchange resins were used for selective removal of Cr(VI) from tap water. The influence on the process efficiency of parameters, such as the type of anion-exchange resin, the concentrations of Cl- and SO42- in the feed water, and the flow rate and pH of the feed water, was investigated. Regeneration was carried out by the reduction of the chromate with bisulfite under acidic conditions and the subsequent removal of the Cr from the column as the Cr3+ cation. The pH of the regenerant solution was then increased, causing Cr(OH)3 to precipitate, and the precipitate was removed by filtration.",

keywords = "Cr removal, Selective resin, Tap water treatment",

author = "E. Korngold and N. Belayev and L. Aronov",

year = "2003",

month = oct,

day = "1",

doi = "10.1016/S1383-5866(03)00006-6",

language = "English",

volume = "33",

pages = "179--187",

journal = "Gas Separation and Purification",

issn = "1383-5866",

publisher = "Elsevier",

number = "2",

}

TY - JOUR

T1 - Removal of chromates from drinking water by anion exchangers

AU - Korngold, E.

AU - Belayev, N.

AU - Aronov, L.

PY - 2003/10/1

Y1 - 2003/10/1

N2 - Strong-base anion-exchange resins were used for selective removal of Cr(VI) from tap water. The influence on the process efficiency of parameters, such as the type of anion-exchange resin, the concentrations of Cl- and SO42- in the feed water, and the flow rate and pH of the feed water, was investigated. Regeneration was carried out by the reduction of the chromate with bisulfite under acidic conditions and the subsequent removal of the Cr from the column as the Cr3+ cation. The pH of the regenerant solution was then increased, causing Cr(OH)3 to precipitate, and the precipitate was removed by filtration.

AB - Strong-base anion-exchange resins were used for selective removal of Cr(VI) from tap water. The influence on the process efficiency of parameters, such as the type of anion-exchange resin, the concentrations of Cl- and SO42- in the feed water, and the flow rate and pH of the feed water, was investigated. Regeneration was carried out by the reduction of the chromate with bisulfite under acidic conditions and the subsequent removal of the Cr from the column as the Cr3+ cation. The pH of the regenerant solution was then increased, causing Cr(OH)3 to precipitate, and the precipitate was removed by filtration.

KW - Cr removal

KW - Selective resin

KW - Tap water treatment

UR - http://www.scopus.com/inward/record.url?scp=0141849255&partnerID=8YFLogxK

U2 - 10.1016/S1383-5866(03)00006-6

DO - 10.1016/S1383-5866(03)00006-6

M3 - Article

AN - SCOPUS:0141849255

SN - 1383-5866

VL - 33

SP - 179

EP - 187

JO - Gas Separation and Purification

JF - Gas Separation and Purification

IS - 2

ER -

Removal of chromates from drinking water by anion exchangers

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this