附生珊瑚活性炭吸附孔雀石绿的研究。

IF 5.8 3区 环境科学与生态学 0 ENVIRONMENTAL SCIENCES
Ramachandran Jothimani, Mariappan Santhi
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引用次数: 0

摘要

研究了用硫酸活化法制备附生珊瑚活性炭(AC)去除孔雀石绿(MG)染料。x射线衍射(XRD)分析证实了AC的无定形性质,有助于其增强吸附性能。brunauer - emmet - teller (BET)分析表明,该材料具有比表面积为22.976 m2/g的介孔结构,具有脱除染料的潜力。吸附实验在不同条件下进行,包括初始pH、吸附剂用量、染料浓度和共离子存在。100 MG AC的MG去除率最高。Langmuir, Freundlich, Tempkin, D-R, Liu, Redlich-Peterson等温线模型很好地描述了吸附数据,表明单层吸附和非均相表面相互作用的结合。最佳的染料去除发生在酸性条件下,可能是由于AC表面和MG分子之间的静电相互作用。拟二阶方程最适合化学吸附数据。温度研究表明,随着温度的升高,吸附效率提高,在90-160分钟内达到平衡。这些发现表明,从附生珊瑚中提取的活性炭是一种有前途的、经济有效的吸附废水中合成染料的吸附剂,具有工业应用的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study on the adsorption of malachite green from aqueous solutions using activated carbon prepared from Corallocarpus epigaeus.

This study explores the preparation and characterization of activated carbon (AC) derived from Corallocarpus epigaeus through sulfuric acid activation for the removal of malachite green (MG) dye from aqueous solutions. X-ray diffraction (XRD) analysis confirmed the amorphous nature of AC, contributing to its enhanced adsorption properties. Brunauer-Emmett-Teller (BET) analysis revealed a mesoporous structure with a specific surface area of 22.976 m2/g, indicating its potential for dye removal. Adsorption experiments were conducted under varying conditions, including initial pH, adsorbent dosage, dye concentration, and co-ion presence. The highest MG removal efficiency was achieved with 100 mg of AC. Adsorption data were well described by Langmuir, Freundlich, Tempkin, D-R, Liu, Redlich-Peterson isotherm models, suggesting a combination of monolayer adsorption and heterogeneous surface interactions. Optimal dye removal occurred under acidic conditions, likely due to electrostatic interactions between the AC surface and MG molecules. The pseudo-second-order equation was best suited for the adsorption data indicating chemisorption. Temperature studies demonstrated increased adsorption efficiency with rising temperature, with equilibrium achieved within 90-160 min. These findings highlight Corallocarpus epigaeus-derived AC as a promising, cost-effective adsorbent for synthetic dye removal from wastewater, with potential scalability for industrial applications.

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来源期刊
CiteScore
8.70
自引率
17.20%
发文量
6549
审稿时长
3.8 months
期刊介绍: Environmental Science and Pollution Research (ESPR) serves the international community in all areas of Environmental Science and related subjects with emphasis on chemical compounds. This includes: - Terrestrial Biology and Ecology - Aquatic Biology and Ecology - Atmospheric Chemistry - Environmental Microbiology/Biobased Energy Sources - Phytoremediation and Ecosystem Restoration - Environmental Analyses and Monitoring - Assessment of Risks and Interactions of Pollutants in the Environment - Conservation Biology and Sustainable Agriculture - Impact of Chemicals/Pollutants on Human and Animal Health It reports from a broad interdisciplinary outlook.
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