用于从水溶液中去除酸性和活性染料的表面活性剂改性大麦秸秆。
Surfactant modified barley straw for removal of acid and reactive dyes from aqueous solution.
作者信息
Oei Broto C, Ibrahim Shariff, Wang Shaobin, Ang Ha Ming
机构信息
Department of Chemical Engineering, Curtin University of Technology, G.P.O. Box U1987, Perth, WA 6845, Australia.
出版信息
Bioresour Technol. 2009 Sep;100(18):4292-5. doi: 10.1016/j.biortech.2009.03.063. Epub 2009 Apr 21.
A barley straw was modified by a surfactant, cetylpyridinium chloride, and used as an adsorbent for acid (acid blue 40) and reactive dye (reactive black 5) adsorption in aqueous solution. Characterization of the modified barley straw was performed using N(2) adsorption, titration, and FT-IR analysis. It was found that the surfactant modified barley straw exhibits higher adsorption to acid blue 40 than reactive black 5 and adsorption of the dyes is influenced by several parameters such as dye initial concentration, adsorbent dosage, solution pH, and adsorption temperature. Adsorption isotherms show that maximum adsorption of acid blue 40 and reactive black 5 is 1.02x10(-4) and 2.54x10(-5) mol/g, respectively. Desorption studies show that both dyes are strongly bounded with the adsorbent and exhibit low desorption.
用表面活性剂十六烷基氯化吡啶对大麦秸秆进行改性，并将其用作吸附剂，用于吸附水溶液中的酸性染料（酸性蓝40）和活性染料（活性黑5）。采用N₂吸附、滴定和傅里叶变换红外光谱（FT-IR）分析对改性大麦秸秆进行表征。结果发现，表面活性剂改性的大麦秸秆对酸性蓝40的吸附能力高于活性黑5，且染料的吸附受染料初始浓度、吸附剂用量、溶液pH值和吸附温度等多个参数的影响。吸附等温线表明，酸性蓝40和活性黑5的最大吸附量分别为1.02×10⁻⁴和2.54×10⁻⁵ mol/g。解吸研究表明，两种染料都与吸附剂紧密结合，解吸率较低。
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