Adsorption-enhanced catalytic oxidation for long-lasting dynamic degradation of organic dyes by porous manganese-based biopolymeric catalyst

International Journal of Biological Macromolecules, Journal Year: 2023, Volume and Issue: 237, P. 124152 - 124152

Published: March 24, 2023

Language: Английский

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Utilizing cheap sawdust by-products of the timber industry waste to assess adsorption kinetics for improved cationic dye pollutant removal

Chemical Papers, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 18, 2025

Language: Английский

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Adsorption of Acid Yellow 36 and direct blue 86 dyes to Delonix regia biochar-sulphur

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 27, 2025

Abstract This study aims to investigate a new approach removing hazardous dyes like Direct Blue 86 (DB86) and Acid Yellow 36 (AY36) from aqueous environments. Delonix regia biochar-sulphur (DRB-S), made seed pods (DPSPs), is an inexpensive environmentally friendly adsorbent. Different characterization investigations using BJH, BET, FTIR, SEM, DSC, TGA, EDX were utilized in the descriptions of DRB-S biosorbent. The optimal pH for AY36 dye DB86 adsorption adsorvbent was at 1.5. For DRB-S, equilibrium attained 30 90 min reaction time interaction. Langmuir model (LGM) pseudo-second-order-model (PSOM) best describe biosorption both molecules biosorbent owing equal homogeneous spread over porous surface chemisorption process which involved valency force through exchange electrons between prepared determined capacities (AY36 DB86) found be 270.27 mg/g 36.23 mg/g, respectively. In conclusion, this recently synthesised adsorbent exhibited impressive sorption capacity successfully removed dyes. suggests that has potential applications wastewater treatment can recycled without affecting its effectiveness.

Language: Английский

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Modelling of a new form of nitrogen doped activated carbon for adsorption of various dyes and hexavalent chromium ions

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 31, 2025

This study reports a new form of nitrogen-doped activated carbon (AC5-600) produced from blend sawdust (SD) and fish waste (FW) treated with urea ZnCl2 for the adsorption toxic metals dyes. The adsorbent was also explored in treatment acid brown 14 (AB14) orange 7 (AO7) dye molecules hexavalent chromium (Cr6+) ions. pH controls sorption individual contaminants, an observed superlative % contaminants removed at 1.5. Removal credited to electrostatic interaction (EI) between anion dyes Cr6+ species this protonated sites accessible on AC5-600 surface. Based error values obtained non-linear modelling (NLM) kinetic isotherm models, Elovich (ELM-AB14 Cr6+), pseudo-first- (PFOM-AB14) second-order models (PSOM-AB14, AO7 Cr6+) Freundlich (FRHM) model were found ideally define various contaminants. determined maximum capacity (Qm) based NLM 1114, 1929 318 mg.g-1 AB14 dye, ions, respectively. computational calculations, energies -4.492 -8.090 eV 2.563, 1.789, 1.226 1.928 Cr2, CrO3, CrO4, CrO4H species. ions synthesised predicted employing response surface methodology (RSM) artificial neural network (ANN) models. ANN more effective predicting than RSM, it highly applicable process.

Language: Английский

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Statistical physics quantification of steric, energetic and thermodynamic adsorption attributes of methylene blue onto sodium styreneSulfonate-co-dimethylacrylamide super-adsorbent hydrogel for water detoxification

Adsorption, Journal Year: 2025, Volume and Issue: 31(2)

Published: Feb. 1, 2025

Language: Английский

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