Improved Adsorption Capacity of Nannochloropsis sp. through Modification with Cetyltrimethylammonium Bromide on the Removal of Methyl Orange in Solution

IF 2.8 4区 工程技术 Q2 CHEMISTRY, APPLIED
Buhani, Suharso, Nurul Miftahza, D. Permatasari, Sumadi
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引用次数: 7

Abstract

In this research, biomass modification of Nannochloropsis sp. with surfactant cetyltrimethylammonium bromide (CTAB) through a cation exchange reaction to produce adsorbent Nannochloropsis sp.-cetyltrimethylammonium bromide (AlgN-CTAB) has been carried out. Biomass modification of Nannochloropsis sp. by CTAB has been successfully carried out through confirmation from the analysis data produced by Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM-EDX). AlgN-CTAB adsorbent has been tested for its adsorption ability against anionic dye of methyl orange (MO) in solution by way of a sequence of experiments by the batch method. The optimum conditions for MO removal from the solution occurred at an adsorbent quantity of 0.1 g, pH of 5, and an interaction time of 60 min. MO adsorption kinetic data by AlgN and AlgN-CTAB tended to take the kinetic model of pseudo-second-order (PSO) with PSO rate constant ( k 2 ) values of 0.56 and 2.17 g mg-1 min-1, serially. The MO adsorption isotherm pattern by AlgN tends to take the Freundlich adsorption isotherm, whereas in AlgN-CTAB it follows the Langmuir and Dubinin-Radushkevich adsorption isotherms. The results of the adsorption-desorption of MO by AlgN-CTAB with 4 repetition cycles resulted in % removal of MO > 80 % . The AlgN-CTAB adsorbent can be used repeatedly and is very effective in absorbing MO in water.
十六烷基三甲基溴化铵改性提高Nannochloropsis sp.对溶液中甲基橙的吸附性能
本研究以表面活性剂十六烷基三甲基溴化铵(CTAB)为原料,通过阳离子交换反应对Nannochloropsis sp.进行了生物量改性,制备了吸附剂Nannochlopsis sp.-十六烷基三三甲铵(AlgN-CTAB)。通过傅立叶变换红外光谱(FTIR)、扫描电子显微镜和能量色散X射线光谱(SEM-EDX)的分析数据证实,CTAB成功地对Nannochloropsis sp.进行了生物量改性。采用分批法对AlgN-CTAB吸附剂对溶液中甲基橙(MO)阴离子染料的吸附性能进行了测试。从溶液中去除MO的最佳条件是吸附剂量为0.1 g、 pH为5,相互作用时间为60 AlgN和AlgN-CTAB的最小MO吸附动力学数据倾向于采用伪二阶(PSO)动力学模型,PSO速率常数(k2)分别为0.56和2.17 g mg-1 min-1,连续。AlgN对MO的吸附等温线倾向于Freundlich吸附等温线,而在AlgN-CTAB中则遵循Langmuir和Dubinin-Radushkevich吸附等温线。AlgN-CTAB对MO的吸附-解吸4个重复循环的结果表明,MO的去除率>80%。AlgN-CTAB吸附剂可以重复使用,对水中MO的吸收非常有效。
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来源期刊
Adsorption Science & Technology
Adsorption Science & Technology 工程技术-工程:化工
CiteScore
5.00
自引率
10.30%
发文量
181
审稿时长
4.5 months
期刊介绍: Adsorption Science & Technology is a peer-reviewed, open access journal devoted to studies of adsorption and desorption phenomena, which publishes original research papers and critical review articles, with occasional special issues relating to particular topics and symposia.
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