- Accession Number
- TY651-0009
- Document Delivery
- TY651: Document Delivery available
- Authors
- Saraydin
D. Karadag
E. Guven
O.
- Title
- ADSORPTION OF SOME BASIC DYES BY ACRYLAMIDE-MALEIC ACID HYDROGELS
- Source
- Separation Science & Technology. 31(3):423-434, 1996.
- ISSN
- 0149-6395
- Author Keywords
- Hydrogel. Poly(acrylamide maleic acid). Swelling. Adsorption. Basic dyes.
- KeyWords Plus
- Binding. Blue.
- Abstract
- In this study, acrylamide-maleic acid (AAm/MA) hydrogels containing
different quantities of maleic acid have been irradiated with gamma-radiation.
They have been used in experiments on swelling, diffusion, and the
adsorption of basic dyes such as methylene blue, methyl violet, and nile
blue. Acrylamide-maleic acid hydrogel containing 40 mg maleic acid and
irradiated at 3.73 kGy has been used for swelling and diffusion studies in
water and solutions of basic dyes. For this hydrogel, maximum and minimum
swellings have been observed with solutions of nile blue (2000% swelling)
and water (1480% swelling). Diffusions of water and dyes within hydrogels
have been found to be non-Fickian in character. In experiments on the
adsorption of dyes, Type III adsorption has been found. One gram of AAm/MA
hydrogel sorbed 0.3-2.2 mg of methylene blue, 0.3-3.4 mg of methyl violet,
and 1.6-3.9 mg of nile blue, while acrylamide hydrogel has not sorbed any
basic dye. This result shows that AAm/MA hydrogel can be used as a sorbent
for water pollutants such as dyes, and immobilization of these organic
contaminants in the hydrogels from wastewater can solve one of the most
important environmental problems of the textile industry. [References: 25]
- Language
- English
- Publication Type
- Article
- Subset
- Current Contents/Physical, Chemical & Earth Sciences.
- CC Categories
- Inorganic & nuclear chemistry.
- Institution
- Reprint available from:
- Saraydin
D CUMHURIYET UNIV DEPT CHEM SIVAS 58140 TURKEY
HACETTEPE UNIV DEPT CHEM ANKARA 06532 TURKEY