The DOI matches its Crossref record; 24 of the 24 references it cites were found in a registry or an index.
Removal of Hexavalent Chromium from Wastewater Using a New Composite Chitosan Biosorbent
Abstract
A new composite chitosan biosorbent was prepared by coating chitosan, a glucosamine biopolymer, onto ceramic alumina. The composite bioadsorbent was characterized by high-temperature pyrolysis, porosimetry, scanning electron microscopy, and X-ray photoelectron spectroscopy. Batch isothermal equilibrium and continuous column adsorption experiments were conducted at 25 degrees C to evaluate the biosorbent for the removal of hexavalent chromium from synthetic as well as field samples obtained from chrome plating facilities. The effect of pH, sulfate, and chloride ion on adsorption was also investigated. The biosorbent loaded with Cr(VI) was regenerated using 0.1 M sodium hydroxide solution. A comparison of the results of the present investigation with those reported in the literature showed that chitosan coated on alumina exhibits greater adsorption capacity for chromium(VI). Further, experimental equilibrium data were fitted to Langmuir and Freundlich adsorption isotherms, and values of the parameters of the isotherms are reported. The ultimate capacity obtained from the Langmuir model is 153.85 mg/g chitosan.
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Metadata
- Authors
- Boddu, V. M., Abburi, K., Talbott, J. L., & Smith, E. D.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2003-09-05
- Volume
- 37
- Issue
- 19
- Pages
- 4449-4456
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W1977998156
- Cited by
- 503
- References
- 24
- FWCI
- 16.37
- Type
- journal article
- Language
- en
- Open access
- closed
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