Araştırma Makalesi

Methylene blue dye removal utilizing biomass of the macroalgae (Padina sp.): Adsorption, kinetic studies and mechanism

Cilt: 42 Sayı: 2 15 Haziran 2025
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Methylene blue dye removal utilizing biomass of the macroalgae (Padina sp.): Adsorption, kinetic studies and mechanism

Abstract

Macroalgae, which are abundant in marine ecosystems, are promising natural adsorbents for water purification because of their high surface area, rich functional groups, and natural adsorption capabilities. In this study, the adsorption capacity of Padina sp., a brown macroalgae in dried powdered form, was evaluated for the removal of toxic methylene blue (MB) dye from water. A series of batch adsorption tests were conducted to investigate the effects of several operational parameters, as initial MB concentrations (2, 5, 10, 20, and 50 mg L-1), pH levels (2, 4, 7, and 11), and contact time (0, 0.08, 0.5, 1, 2, 4, 6, and 24 h) on MB removal. Furthermore, powdered Padina sp. was analyzed before and after MB adsorption using Scanning Electron Microscopy and Fourier Transform Infrared Spectroscopy. The results showed optimal removal efficiency under neutral and alkaline conditions, as opposed to acidic environments. The Freundlich model accurately represents experimental adsorption data (R2= 0.9902). Kinetic analysis revealed that MB adsorption onto Padina sp. primarily followed a pseudo-second order mechanism (R2= 0.9982). The characterization and experimental findings suggest that the proposed mechanisms for MB adsorption by Padina sp. involve electrostatic interactions, pore filling, and hydrogen bonding. The experimental results suggest that powdered Padina sp. is a promising adsorbent for removing MB from water.

Keywords

Etik Beyan

For this investigation, no ethical approval was needed.

Kaynakça

  1. Abdel-Raouf, N., Al-Enazi, N.M., Ibraheem, I.B.M., Alharbi, R.M., & Alkhulaifi, M.M. (2019). Biosynthesis of silver nanoparticles by using of the marine brown alga Padina pavonia and their characterization. Saudi Journal of Biological Sciences, 26(6), 1207-1215. https://doi.org/10.1016/j.sjbs.2018.01.007
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  3. Alobaidi, D. S., & Alwared, A. I. (2023). Role of immobilised Chlorophyta algae in form of calcium alginate beads for the removal of phenol: isotherm, kinetic and thermodynamic study. Heliyon, 9(4). https://doi.org/10.1016/j.heliyon.2023.e14851
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Ayrıntılar

Birincil Dil

İngilizce

Konular

Atık Yönetimi, Azaltma, Yeniden Kullanım ve Geri Dönüşüm , Sucul Kültür ve Balıkçılık (Diğer)

Bölüm

Araştırma Makalesi

Erken Görünüm Tarihi

14 Haziran 2025

Yayımlanma Tarihi

15 Haziran 2025

Gönderilme Tarihi

20 Ocak 2025

Kabul Tarihi

24 Mart 2025

Yayımlandığı Sayı

Yıl 2025 Cilt: 42 Sayı: 2

Kaynak Göster

APA
Türe, H., & Akdoğan Şirin, P. (2025). Methylene blue dye removal utilizing biomass of the macroalgae (Padina sp.): Adsorption, kinetic studies and mechanism. Ege Journal of Fisheries and Aquatic Sciences, 42(2), 122-130. https://doi.org/10.12714/egejfas.42.2.04