Preparation of Cationic Wheat Straw and Its Application on Anionic Dye Removal

Authors: Yan, Lifeng; Yang, Fan; Jia, Lin

Source: Journal of Biobased Materials and Bioenergy, Volume 3, Number 2, June 2009 , pp. 205-212(8)

Publisher: American Scientific Publishers

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Abstract:

Cationic wheat straw has been prepared for anionic dyes removal from aqueous solution. It included two steps: pretreatment of straw to remove most lignin and the quaternization of the residual straw. Acetic acid pulping was used to remove lignin and the quaternization was carried out in an aqueous suspension. The dye removal results revealed that the maximum adsorption capacity of the cationic straw for dye AB92 could arrive 1072 g/kg. The effect of temperature, reaction time and the extents of the quaternization on the adsorption capacity were studied. The pseudo-second-order kinetic model was applied to describe the kinetic data and the rate constants were evaluated. The Freundlich and Langmuir adsorption models were used to describe the mechanism. The adsorption data indicated that the capacity of the adsorbents was depended obviously on the initial pH of dye solution and initial dye concentration.

Keywords: STRAW; DYE; ADSORBENT; QUATERNIZATION

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jbmb.2009.1024

Publication date: 2009-06-01

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The goal of the creation of a biobased economy is challenging to agriculture, forestry, academia, government and industry. The extractable resources of the Earth are finite, regardless of the quibble over when they will be depleted. The economic, political and social demands for biobased chemicals, materials and energy are expected to radically transform the materials industries, particularly the plastics industry as well as the biofuel industry. These changes will be based on the principles of sustainability, eco-efficiency, industrial ecology, and green chemistry and engineering. In keeping with the growth of knowledge in this field, there is a strong need for a forum to share original research related to biobased materials and bioenergy. The Journal of Biobased Materials and Bioenergy (JBMB) has been created as an international peer-reviewed periodical to fulfill the need for communication in these research areas. This journal will encompass related research activities in all fields of science, engineering and the life sciences.
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Preparation of Cationic Wheat Straw and Its Application on Anionic Dye Removal

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