Revolutionizing dye adsorption: amino functionalized Zeolitic Imidazole Framework-8 for effective methyl blue removal

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

International Journal of Environmental Science and Technology Pub Date : 2025-01-06 DOI:10.1007/s13762-024-06250-y

D. N. Awang Chee, N. A. Kamaludin, M. S. Soffian, F. Z. Abdul Halim, M. A. Mohamed Amin

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Abstract

The discharge of untreated wastewater containing synthetic dyes from the industry significantly pollutes water sources. Metal–Organic Frameworks especially Zeolitic Imidazolate Framework-8 have emerged as promising materials in dye wastewater treatment, offering innovative potential for mitigating this pollution. In this research study, the amino-functionalized Zeolitic Imidazole Framework-8 was synthesized and characterized using Field-Emission Scanning Electron Microscopy, Energy Dispersive X-ray Spectroscopy, Fourier Transform Infrared Spectroscopy, X-ray Diffraction, X-ray Photoelectron Spectroscopy and Brunauer–Emmett–Teller. The suitability of amino-functionalized Zeolitic Imidazole Framework-8 for dye removal was determined via a batch adsorption study, and the effects of several adsorption factors were investigated, including the initial concentration of methyl blue (40–200 ppm) the effect of pH condition (pH 3–11), and reaction time (30–180 min). Several kinetic isotherm models, including Langmuir, Freundlich, Pseudo First Order, and Pseudo Second Order, were applied to ascertain the adsorption mechanism. From the results obtained, the adsorption capacity of amino-functionalized Zeolitic Imidazole Framework-8 recorded is 537.4 mg/g. The adsorption isotherm is well-suited to the Freundlich model (R² = 0.9453) and the kinetic of adsorption is most fitted with Pseudo-second order (R² = 0.9999). Thus, these results suggest that amino-functionalized Zeolitic Imidazole Framework-8 is a highly efficient adsorbent for methyl blue, operating predominantly through multilayer adsorption and chemisorption. For future research, it is recommended to study the selectivity of amino-functionalized Zeolitic Imidazole Framework-8 for various dyes and contaminants, as well as to evaluate its performance in real wastewater samples to assess its practical applicability in complex matrices.

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来源期刊

International Journal of Environmental Science and Technology 环境科学-环境科学

CiteScore

5.60

自引率

6.50%

发文量

806

审稿时长

10.8 months

期刊介绍： International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management. A broad outline of the journal''s scope includes: peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made. The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.