Layered Double Hydroxide/Chitosan Composite (Mg-Al/CT) as a Selective Adsorbent in Congo Red Adsorption from Aqueous Solution

Q4 Environmental Science Ecological Engineering Environmental Technology Pub Date : 2022-03-01 DOI:10.12912/27197050/145753
R. Mohadi, P. M. S. B. Siregar, N. Palapa, T. Taher, A. Lesbani
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Abstract

Layered double hydroxide (LDH) can be used as an adsorbent to remove pollutants from aqueous solutions, but it drawbacks where the structure is easily damaged so that it cannot be reused in the adsorption process and has a low adsorption capacity. This can be overcome through the development of layered double hydroxide material composited with chitosan support material. In addition to untilizing waste, chitosan is selected as supporting material in the layered double hydroxide modification process, because it is cheap, has high selectivity, and is biodegradable. In this study, the adsorbent was applied in the process of removing Congo Red (CR). The LDH modification process using chitosan was successfully carried out, as seen from XRD analysis which resembled the base material (Mg-Al) and support (CT), the BET analysis which showed an increase in surface area, as well as from the large adsorption capacity value and the regeneration process which tends to be stable after compositing is done.
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层状双氢氧化物/壳聚糖复合材料(Mg-Al/CT)对刚果红的选择性吸附
层状双氢氧化物(LDH)可以作为一种吸附剂用于去除水溶液中的污染物,但其缺点是结构容易损坏,不能在吸附过程中重复使用,吸附能力低。这可以通过壳聚糖支撑材料复合的层状双氢氧化物材料来克服。在分层双氢氧化物改性过程中,除了废渣的资源化利用外,还选择壳聚糖作为支撑材料,因为它价格便宜,选择性高,可生物降解。本研究将该吸附剂应用于刚果红(CR)的去除过程中。利用壳聚糖对LDH进行了成功的改性处理,从XRD分析结果可以看出,改性后的LDH与基体(Mg-Al)和载体(CT)相似,BET分析结果表明,改性后的LDH比表面积增大,吸附容量值较大,复合后的再生过程趋于稳定。
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来源期刊
Ecological Engineering  Environmental Technology
Ecological Engineering Environmental Technology Environmental Science-Environmental Science (miscellaneous)
CiteScore
1.30
自引率
0.00%
发文量
159
审稿时长
8 weeks
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