Adsorption of Methylene Blue Dye onto Various Marine Sediments and Seagrass Biomass of Posidonia oceanica Species: Kinetics and Equilibrium Studies
Year: 2025
Type: article
Abstract: The present study concerns the investigation of the sorption and desorption phenomena of the organic compound methylene blue which is used as a synthetic dye in several industries. The batch equilibrium technique was applied using three marine sediments collected from the North Aegean Sea (Greece). Simultaneously, a different target of the current survey was to examine whether non-living biomass of the seagrass species Posidonia oceanica can be used as efficient biosorbents for the removal of MB dye from wastewater through phycoremediation. The influence of several factors on biosorption was studied, such as organic dye loading, biomass loading, contact time, solution pH, and speed of agitation. The obtained experimental results showed that both Freundlich and Langmuir isotherm models could describe the kinetics of the occurred process. Acquired results indicated a positive correlation between the sorption of the target chemical and the adsorbents' organic matter content and textural analysis of fine fraction (<63μm). Desorption studies revealed that the studied dye in most cases the dye was very strongly adsorbed on studied matrices with lower quantities of seawater extractable amounts. Finally, according to the experimental findings, bioadsorption on P. oceanica can be characterized as an efficient method for the bioremediation of dye-polluted wastewater.
Source: Organics
DOI: 10.3390/org6020021
Institution: University of the Aegean
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,207
OpenAlex ID: W4410127301