The Using of Nanoparticles of Microalgae in Remediation of Toxic Dye from Industrial Wastewater: Kinetic and Isotherm Studies

Abdallah Tageldein Mansour; Ahmed E Alprol; Khamael M Abualnaja; Hossam S El-Beltagi; Khaled M A Ramadan; Mohamed Ashour

doi:10.3390/ma15113922

The Using of Nanoparticles of Microalgae in Remediation of Toxic Dye from Industrial Wastewater: Kinetic and Isotherm Studies

Materials (Basel). 2022 May 31;15(11):3922. doi: 10.3390/ma15113922.

Authors

Abdallah Tageldein Mansour^{1

2}, Ahmed E Alprol³, Khamael M Abualnaja⁴, Hossam S El-Beltagi^{5

6}, Khaled M A Ramadan^{7

8}, Mohamed Ashour³

Affiliations

¹ Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia.
² Fish and Animal Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21531, Egypt.
³ National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt.
⁴ Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia.
⁵ Agricultural Biotechnology Department, College of Agriculture and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia.
⁶ Biochemistry Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt.
⁷ Central Laboratories, Department of Chemistry, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia.
⁸ Department of Biochemistry, Faculty of Agriculture, Ain Shams University, Cairo 11566, Egypt.

Abstract

Batch adsorption experiments were carried out to study the removal of the toxic Methylene Blue Dye (MBD) from synthetic aqueous solutions using the nanoparticles form of Arthrospira platensis NIOF17/003. The adsorption capacity of the adsorbent for MBD was investigated using different amounts of A. platensis nanoparticles at different contact times, temperatures, pH, and MBD initial concentrations in the synthetic aqueous solution. In addition, A. platensis nanoparticles were characterized using Electron Microscopy (SEM), Brunauer-Emmett-Teller (BET), Fourier Transform Infrared (FTIR), and Ultraviolet spectra (UV) techniques. The optimum removal of MBD was found at a concentration of 0.4 g A. platensis nanoparticles. A. platensis nanoparticles remove 93% of MBD in 5 min (under agitation conditions at 150 rpm). The highest adsorption capacity was found by the Langmuir model to be 58.8 mg g^-1. It is an endothermic process with spontaneity increasing with temperature. The probable mechanism for the adsorption is chemisorption via surface-active charges in the initial phase, which is followed by physical sorption by occupying pores of A. platensis. MBD adsorption by A. platensis follows pseudo-second-order kinetics. The Freundlich and Langmuir models fit well with the experimental data. The adsorption experiments suggested that the regeneration of the adsorbents was possible for repeated use, especially regarding MBD up to 65.8% after three cycles, which proves it can be easily recycled. In conclusion, the nanoparticles of A. platensis have a significant adsorption potential in the removal of MBD from effluent wastewater.

Keywords: Arthrospira platensis NIOF17/003; FTIR; SEM; adsorption; bioremediation; equilibrium isotherm; green nanoparticles; methylene blue.

Abstract

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