Kinetic, Isotherm, and Thermodynamic Studies of Methylene Blue Adsorption over Metal-doped Zeolite Nano-adsorbent

IF 1.4 Q3 CHEMISTRY, MULTIDISCIPLINARY

Physical Chemistry Research Pub Date : 2021-03-01 DOI:10.22036/PCR.2020.233844.1781

Hadi Niaei, Mohammad Rostamizadeh, Farid Maasumi, Jaber Darabi

引用次数: 4

Abstract

In this work, the adsorption of cationic dye by the modified high silica zeolite nano-adsorbent was investigated. The support was prepared hydrothermally and doped by the iron. The morphology, structure, and textural properties of the nano-adsorbents were characterized using XRD, FT-IR, N2 adsorption-desorption, and FE-SEM. The results showed that the nano-adsorbent had a high specific surface area, crystallinity, and pore volume. The maximum adsorption (6.09 mg g-1) was at the pH level of 9.0, 10 mg L-1 of dye concentration, T=25 °C, and 1.0 gL-1 of nano-adsorbent dosage. The kinetic of Methylene blue (MB) adsorption was pseudo-second-order with the high correlation factor (R2=0.99). The MB adsorption was in line with the Langmuir model, as an exothermic and spontaneous process. The results confirmed that the metal-doped high silica ZSM-5 zeolite was an efficient nano-adsorbent for the cationic dye adsorption through wastewater treatment.

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金属掺杂沸石纳米吸附剂吸附亚甲基蓝的动力学、等温线和热力学研究

本文研究了改性高硅沸石纳米吸附剂对阳离子染料的吸附性能。该载体采用水热法制备，并掺杂铁。采用XRD、FT-IR、N2吸附-脱附、FE-SEM等表征了纳米吸附剂的形貌、结构和结构性能。结果表明，该纳米吸附剂具有较高的比表面积、结晶度和孔隙体积。在pH为9.0、染料浓度为10 mg L-1、温度为25℃、纳米吸附剂用量为1.0 gL-1的条件下，吸附量最大(6.09 mg g-1)。亚甲基蓝吸附动力学为准二级动力学，相关系数高(R2=0.99)。吸附过程符合Langmuir模型，为放热自发过程。通过废水处理，证实了金属掺杂高硅分子筛ZSM-5是一种高效的吸附阳离子染料的纳米吸附剂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physical Chemistry Research CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

2.70

自引率

8.30%

发文量

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