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Synthesis of beta‐cyclodextrin‐grafted‐alginate and its application for removing methylene blue from water solution
Author(s) -
Yang Jisheng,
Han Suya,
Yang Li,
Zheng Haicheng
Publication year - 2016
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.4612
Subject(s) - methylene blue , sodium alginate , cyclodextrin , chemistry , adsorption , divalent , polysaccharide , chemical engineering , nuclear chemistry , chitosan , polymer chemistry , sodium , chromatography , organic chemistry , catalysis , photocatalysis , engineering
BACKGROUND Beta‐cyclodextrin (β‐ CD ) has a hydrophilic exterior and a hydrophobic internal cavity which gives it the ability to form a host–guest complex. Sodium alginate ( NaAlg ) is a natural polysaccharide which can form a hydrogel in the presence of divalent cations. RESULTS The degree of substitution ( DS ) of the resulting β‐ CD grafted alginate was 12%. The adsorption ratio of β‐ CD to methylene blue ( MB ) was close to 2:1 which agreed with the theoretical value. The inclusion property of the Alg‐β‐ CD / MB ‐Ca hydrogel was excellent and stable. The hydrogel could be disintegrated easily with the aid of Na 2 CO 3 , and the Alg‐β‐ CD sol obtained could be reused. CONCLUSION This study indicated that the method of aggregation–disintegration of the prepared hydrogel used to adsorb MB from water was effective and could be reused. © 2014 Society of Chemical Industry