Dictyota bartayresiana a sustainable biosorbent for the decolorization of reactive blue 19 – optimization, equilibrium, desorption and toxicological studies

Bioremediation Journal, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 29

Published: Jan. 23, 2025

The present study aims to investigate the dye decolorization efficiency of brown seaweed Dictyota bartayresiana against reactive blue 19 (RB19) dye. process variables namely and biosorbent concentration, pH incubation time were optimized through BBD based RSM for achieving enhanced decolorization. experimental data well fitted into Freundlich isotherm proving heterogenous adsorption RB19. Temkin Dubinin – Radushkevich models showcased endothermic chemisorption mediated RB19 onto D. bartayresiana. pseudo second order kinetic model exhibited assisted Weber Morris proved that intra particle diffusion was not rate limiting step in Thermodynamic studies revealed spontaneous, feasible biosorption. Interaction between assessed UV-Vis, FT-IR SEM which confirmed Desorption regeneration 73% desorbed first cycle using 0.1 M NaOH as eluent with 68% reduced subsequent cycles highlighting reusability biosorbent. Toxicity assessments untreated treated solution examined on microflora, brine shrimp fenugreek results nontoxic nature solution. Thus, this provides valuable insights utilization an eco-friendly affirms its safe use various biological applications.

Language: Английский

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Synergistic Effect of TiO₂ Nanorods Incorporated with Graphene Oxide for Photocatalytic Degradation of Multiple Dyes

International Journal of Environmental Research, Journal Year: 2024, Volume and Issue: 19(1)

Published: Nov. 22, 2024

Abstract The treatment of dye-contaminated wastewater is essential for mitigating environmental and health risks. In this study, we developed a novel nanocomposite, TiO₂-incorporated graphene oxide (TiO₂@GOn), aimed at enhancing the photocatalytic degradation neutral red dye, which served as target analyte. photocatalysis technique was employed, leveraging excitation TiO₂ under UV light to generate reactive oxygen species efficient dye degradation. nanorods were combined with form TiO₂@GOn designed improve charge separation enhance catalytic activity. Nanocomposite characterization carried out using X-ray diffraction (XRD) determine crystallographic structure, scanning electron microscopy (SEM) visualize surface morphology, UV–Vis spectroscopy evaluate optical properties behavior. nanocomposite demonstrated synergistic effect, outperforming pristine individually in This study introduces highly nanomaterial applications, offering sustainable approach pollutants wastewater.

Language: Английский

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Synthesis of Zinc-based Bimetallic Nanoparticles for the Degradation of Industrial Dyes

Asian Journal of Chemistry, Journal Year: 2024, Volume and Issue: 36(8), P. 1921 - 1926

Published: July 25, 2024

Textile dyes are a prominent source of coloured organic substances that present an increasingly concerning risk to biodiversity. This problem could be remediated by incorporating nanoparticles as photocatalysts in photodegradation activities. The photocatalytic degradation brilliant blue and Amaranth has been investigated using ZnO-Fe2O3 bimetallic (Zn-Fe BN) aqueous media under sun rays. Zn-Fe BN was synthesized chemical synthesis technique utilizing FeCl3 ZnSO4·7H2O starting materials further characterized XRD, FTIR, SEM, EDAX DLS techniques. rate examined recording the absorbance value via UV-Vis spectrophotometer. experimental results demonstrated effective catalyst removing from water. decomposition with variations reaction parameters. As concentration NaOH solution increased, increment observed simultaneously, well for different amounts catalyst. Hence, removal textile made easier adopting methodology.

Language: Английский

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An efficient electrochemical sensor based on CuO/ZnO hybrid catalyst fabricated electrode for the sensitive detection of dichlone in environmental samples

Microchemical Journal, Journal Year: 2024, Volume and Issue: unknown, P. 112628 - 112628

Published: Dec. 1, 2024

Language: Английский

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