木质纤维素材料作为染料吸附剂:亚甲基蓝和刚果红对啤酒废粮的吸附

IF 0.7 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Croatica Chemica Acta Pub Date : 2018-01-02 DOI:10.5562/CCA3289

Antonija Kezerle, Natalija Velić, D. Hasenay, D. Kovačević

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引用次数: 31

摘要

啤酒糟（BSG）是一种木质纤维素废料，被评估为一种低成本的吸附剂，可在间歇过程中从水溶液中去除合成染料亚甲基蓝（MB）和刚果红（CR）。通过化学分析、FTIR和SEM对BSG进行了表征。研究了接触时间、染料初始浓度、吸附剂粒度、吸附剂浓度和pH对吸附过程的影响。两种染料的去除率都达到了70%到90%以上。结果表明，在两种情况下（MB和CR吸附），该过程都可以用Langmuir和Freundlich吸附等温线来解释。用拟二阶模型很好地描述了吸附过程的动力学过程。结果表明，BSG作为一种低成本的吸附剂，有可能从水溶液中去除MB和CR染料。

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Lignocellulosic Materials as Dye Adsorbents: Adsorption of Methylene Blue and Congo Red on Brewers’ Spent Grain

Brewers’ spent grain (BSG), a lignocellulosic waste material, was evaluated as a low-cost adsorbent for the removal of synthetic dyes methylene blue (MB) and Congo red (CR) from aqueous solutions in a batch process. Characterisation of the BSG was performed by chemical analysis, FTIR and SEM. The effects of contact time, initial dye concentration, adsorbent particle size, adsorbent concentration and pH on the adsorption process were investigated. High removal of both dyes ranging from 70 to over 90 % was achieved. It was shown that in both cases (MB and CR adsorption) the process could be interpreted in terms of Langmuir and Freundlich adsorption isotherms. The kinetics of the adsorption process was well described by the pseudo- second-order model. The results indicated the potential use of BSG as a low-cost adsorbent for MB and CR dye removal from aqueous solutions.

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来源期刊

Croatica Chemica Acta 化学-化学综合

CiteScore

0.60

自引率

0.00%

发文量

审稿时长

18 months

期刊介绍： Croatica Chemica Acta (Croat. Chem. Acta, CCA), is an international journal of the Croatian Chemical Society publishing scientific articles of general interest to chemistry.