Competitive biosorption of Yellow 2G and Reactive Brilliant Red K-2G onto inactive aerobic granules: simultaneous determination of two dyes by first-order derivative spectrophotometry and isotherm studies.
Competitive biosorption of Yellow 2G and Reactive Brilliant Red K-2G onto inactive aerobic granules: simultaneous determination of two dyes by first-order derivative spectrophotometry and isotherm studies.
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DOI：
10.1016/j.biortech.2010.02.091
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发表时间：
2010-08
影响因子：
11.4
通讯作者：
Jingfeng Gao;Qian Zhang;Kai Su;Jin-hui Wang
中科院分区：
文献类型：
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作者：
Jingfeng Gao;Qian Zhang;Kai Su;Jin-hui Wang
研究了非活性好氧颗粒对染料黄2G和活性艳红K-2G的竞争吸附行为。建立了一阶导数分光光度法同时测定Y2 G和RBR二元体系的方法。Dubinin-Raduskevich（D-R）等温线成功地预测了Y2 G和RBR在单一和二元溶液中的生物吸附。然而，没有一个测试的二元吸附等温线可以真实地代表生物吸附平衡数据。根据D-R等温线计算的Y2 G和RBR在单一溶液中的最大吸附量分别为58.50和66.18mgg−1;在二元溶液中，Y2 G的最大吸附量下降到40.38mgg−1，而RBR的最大吸附量上升到171.21mgg−1，显示出它们之间的协同和拮抗作用。红外光谱结果表明，好氧颗粒污泥吸附Y2 G和RBR的主要官能团为胺、羟基、羧基以及其中的一种。
This study focused on the competitive biosorption of Yellow 2G (Y2G) and Reactive Brilliant Red K-2G (RBR) by inactive aerobic granules in binary solutions. A first-order derivative spectrophotometric method for the simultaneous determination of Y2G and RBR in binary solutions was developed. Dubinin–Raduskevich (D–R) isotherm successfully predicted the biosorption of Y2G and RBR in both single and binary solutions. However, none of the tested binary adsorption isotherms could realistically represent the biosorption equilibrium data. Maximum biosorption capacity calculated from D–R isotherm for Y2G and RBR in single solution was 58.50 and 66.18mgg−1, respectively; in binary solutions, for Y2G it decreased to 40.38mgg−1, but for RBR it increased to 171.21mgg−1, showing their synergism and antagonistic interactions. The FTIR results indicated the main functional groups on aerobic granules for biosorption of Y2G and RBR would be amine, hydroxyl, carboxyl and either.