Research Article

Cationic and Anionic Dye Removal of Modified Ulva lactuca L. and Antioxidant Activity

Volume: 35 Number: 2 June 30, 2025
EN

Cationic and Anionic Dye Removal of Modified Ulva lactuca L. and Antioxidant Activity

Abstract

This study aimed to investigate the removal of fuchsin and nigrosin synthetic dyes using modified Ulva lactuca L. The study used the adsorption process under laboratory conditions to determine the removal effect of initial dye concentration (25, 50, 100 mg L-1) at different exposure times (60, 90, 120 min), constant temperature (26±1 ºC), biomass dosage (1 g dw) and pH (7–8) values on the dried biosorbent chemically treated with magnesium chloride (MgCI2) and potassium hydroxide (KOH). The research also provides information on changes in some biochemical properties of the biosorbent by exposure to MgCI2 and KOH. The adsorption of the dyes on U. lactuca was modeled with the Langmuir and Freundlich isotherms. The study results determined maximum dye removal for fuchsin (70.81%) and nigrosin (61.29%) dyes at 120 min exposure time and 50 mg L-1 dye concentration onto non-modified U. lactuca biomass. The mean dye removal for fuchsin (60.08%, 99.12%) and nigrosin (56.23%, 54.27%) was obtained on U. lactuca biomass treated with MgCI2 and KOH, respectively. The sample prepared at 60 min contact time and 50 mg L-1 dye concentration had the highest adsorption efficiency for fuchsin on U. lactuca biomass treated with KOH (99.40%). These results demonstrated that the KOH exposure onto Ulva is an efficient, non-polluting, and economical process for eliminating fuchsin from aqueous solutions.

Keywords

Supporting Institution

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Ethical Statement

There are no ethical issues related to the research. The author also confirmed that the study did not involve any endangered or protected species, any human subjects or animal handling procedures.

Thanks

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Details

Primary Language

English

Subjects

Hydrobiology

Journal Section

Research Article

Early Pub Date

June 20, 2025

Publication Date

June 30, 2025

Submission Date

October 9, 2024

Acceptance Date

March 22, 2025

Published in Issue

Year 2025 Volume: 35 Number: 2

APA
Şentürk, T., & Oskay, M. (2025). Cationic and Anionic Dye Removal of Modified Ulva lactuca L. and Antioxidant Activity. Yuzuncu Yıl University Journal of Agricultural Sciences, 35(2), 319-333. https://doi.org/10.29133/yyutbd.1563599
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Yuzuncu Yil University Journal of Agricultural Sciences by Van Yuzuncu Yil University Faculty of Agriculture is licensed under a Creative Commons Attribution 4.0 International License.