Enhanced Adsorption of Methyl Orange by Vermiculite Modified by Cetyltrimethylammonium Bromide (CTMAB)
Enhanced Adsorption of Methyl Orange by Vermiculite Modified by Cetyltrimethylammonium Bromide (CTMAB)
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DOI：
10.1016/j.proenv.2012.01.207
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
J. Tang;Z. F. Yang;Y. Yi
中科院分区：
文献类型：
--
作者：
J. Tang;Z. F. Yang;Y. Yi
以十六烷基三甲基溴化铵为改性剂，制备了CTMAB-蛭石复合材料，该复合材料能改善蛭石层间距，提高蛭石对有机物的吸附能力。采用分光光度法研究了投料量、振荡时间、橙子溶液浓度、pH值等因素对橙子溶液吸附性能的影响。通过扫描电镜研究了蛭石和CTMAB-蛭石的结构特征。结果表明，CTMAB-蛭石发生了显著的变化，其层间距变大。CTMAB-蛭石对橙子的去除效果优于蛭石。大约30分钟后。CTMAB-蛭石可以达到吸收平衡。低pH条件有利于CTMAB-蛭石对橙子的吸附。活化温度应控制在CTMAB的起始分解温度以下，以提高再生蛭石的可再利用性。
CTMAB-vermiculite, which can improve the vermiculite interlayer space and adsorption capacity of organic matter, has been obtained by using cetyltrimethylammonium bromide. The effects of the dosage of material, shaking time, the concentration of methyl orange, and the pH on the absorbent characteristics of methyl orange are studied by spectrophotoscopy. The structural characteristics of vermiculite and CTMAB-vermiculite have been studied through SEM. The results show that CTMAB-vermiculite changes dramatically -- its interlayer space becomes larger. The methyl orange removal rate of CTMAB-vermiculite is better than that of vermiculite. In about 30 minutes. CTMAB-vermiculite can reach absorption equilibrium. Low pH conditions are conducive to CTMAB-vermiculite adsorption of methyl orange. The activated temperature should be controlled under the initial decomposition temperature of CTMAB, which can improve the reusability of recycled vermiculite.