Acidic polysaccharide gels for selective adsorption of lead (II) ion

The adsorption behavior of lead (II), zinc (II) and copper (II) on crosslinked pectic and alginic acids, and their amide derivatives form has been investigated. The selectivity order for metal ion uptake is lead (II) > copper (II) > zinc (II). The nature of such acidic polysaccharides for the...

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Published inSeparation and purification technology Vol. 42; no. 3; pp. 219 - 225
Main Authors Dhakal, Rabindra Prasad, Ghimire, Kedar Nath, Inoue, Katsutoshi, Yano, Masayuki, Makino, Kenjiro
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.04.2005
Elsevier Science
Subjects
Adsorption
Adsorptive removal
Alginic acid
Applied sciences
Chemical engineering
Exact sciences and technology
Ion exchange
Lead (II) ion
Pectic acid
Polysaccharide gels
Adsorptive removal
Pectic acid
Polysaccharide gels
Alginic acid
Lead (II) ion
Cation exchange
Purification
Adsorption
Batchwise
Metal ion
Ion exchange
Uptake
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Summary:The adsorption behavior of lead (II), zinc (II) and copper (II) on crosslinked pectic and alginic acids, and their amide derivatives form has been investigated. The selectivity order for metal ion uptake is lead (II) > copper (II) > zinc (II). The nature of such acidic polysaccharides for the removal of lead (II) ion was examined through batch wise tests and column tests and compared with that for the commercially available weakly acidic cation exchange DIAION WK resins. The experimental results revealed that chemically modified acidic polysaccharides exhibit much better separation performance compared to the latter, which suggests a high possibility of their applications in the practical separation and purification of lead (II) ion.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1383-5866
1873-3794
DOI:10.1016/j.seppur.2004.07.016