Adsorptive removal of malachite green dye from aqueous solution using Rumex abyssinicus derived activated carbon

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Sept. 7, 2023

Abstract The potential for malachite green dye saturated effluent to severely affect the environment and human health has prompted search effective treatment technologies. Thus, this study was conducted with goal of developing activated carbon from Rumex abyssinicus adsorptive removal an aqueous solution. Unit operations such as drying, size reduction, impregnation H 3 PO 4 , thermal activation were used during preparation carbon. An experiment designed considering four main variables at their respective three levels: initial concentration (50, 100, 150 mg/L), pH (3, 6, 9), contact period (20, 40, 60 min), adsorbent dosage (0.05, 0.01, 0.15 g/100 mL). Optimization batch adsorption process carried out using Response Surface methodology's Box Behnken approach. characterization described by SEM surface morphology cracks highly porous morphology, FTIR multi-functional groups O–H 3506.74 cm −1 3290.70 carbonyl group stretching aldehyde ketone (1900–1700 ), motion aromatic ring C=C (1543.12 –C–H (1500–1200 vibrational –OH (1250.79 C–O–C (1049.32 pHpzc 5.1, BET specific area 962.3 m 2 /g, XRD presence amorphous structure. maximum minimum efficiencies 99.9% 62.4% observed experimental conditions (100 mg/L, 0.10 mg/100 mL, 40 min) 3, 20 respectively. Langmuir, Freundlich, Toth, Koble-Corrigan models evaluate data, in which model found be best fit highest value R 0.998. In addition this, kinetic studies undertaken pseudo-first-order, pseudo-second-order, intraparticle diffusion, Boyd models, a result, pseudo-second-order proved have better among models. kinetics isotherm analysis revealed that nature homogenous monolayer surfaces driven chemosorption. Furthermore, thermodynamics feasible, spontaneous, endothermic. On other hand, reusability depicted fact can utilized five cycles negligible drop 99.9 95.2%. Finally, low-cost, environmentally benign, high capacity material derived stem could treat industrial effluents.

Language: Английский

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Design and optimization of Ag decorated MgO nanosphere catalyst for efficient removal of textile industry pollutants and their biological applications

Journal of the Indian Chemical Society, Journal Year: 2025, Volume and Issue: 102(2), P. 101573 - 101573

Published: Jan. 10, 2025

Language: Английский

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Recent approach in the application of nanoadsorbents for malachite green (MG) dye uptake from contaminated water: A critical review

Environmental Nanotechnology Monitoring & Management, Journal Year: 2023, Volume and Issue: 20, P. 100891 - 100891

Published: Oct. 26, 2023

Language: Английский

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Decoding dye degradation: Microbial remediation of textile industry effluents

Biotechnology Notes, Journal Year: 2023, Volume and Issue: 4, P. 64 - 76

Published: Jan. 1, 2023

The extensive use of chemical dyes, primarily Azo and anthraquinone in textiles has resulted their alarming release into the environment by textile industries. introduction heavy metals these dyes leads to an increase Biochemical Oxygen Demand (BOD), Chemical (COD), water toxicity. Conventional physicochemical methods for treating effluents are costly energy-intensive. Here new strategies is eminent, microbial bioremediation biodegradation detoxification hazardous possesses as innovative solution existing problem, discussed specific groups bacteria, fungi, algae which could be one potential decolorizing agents that replace majority other expensive processes wastewater treatment using enzymes like peroxidase, laccase, azoreductase. These catalyzes reactions break down dye molecules less harmful substances. Additionally, novel advancements enhance effectiveness microbes products comprehensively discussed.

Language: Английский

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Efficient malachite green biodegradation by Pseudomonas plecoglossicide MG2: process optimization, application in bioreactors, and degradation pathway

Microbial Cell Factories, Journal Year: 2023, Volume and Issue: 22(1)

Published: Sept. 21, 2023

Abstract Microbial degradation of synthetic dyes is considered a promising green dye detoxification, cost-effective and eco-friendly approach. A detailed study on the decolorization malachite (MG) using newly isolated Pseudomonas plecoglossicide MG2 was carried out. Optimization MG biodegradation by tested organism investigated UV–Vis spectrophotometer resultant degraded products were analyzed liquid chromatography–mass spectrometry FTIR. Also, cytotoxicity studied human normal retina cell line. The optimum conditions for significant maximum (90–93%) pH 6–7, inoculum size 4–6%, incubation temperature 30–35 °C, under static aerobic conditions. performance grown culture in bioreactors simulated wastewater assessed. (99% at 100 150 mg MG/l an optimal pH) COD removal (95.95%) best bioreactor comparison with that activated sludge or culture-activated bioreactors.The FTIR spectrum biodegraded displayed spectral changes, especially fingerprint region 1500–500 as well disappearance some peaks appearance new peaks. Twelve intermediates identified LC–MS. They desmalachite green, didesmalachite tetradesmalachite 4-(diphenylmethyl)aniline, carbinol, bis[4-(dimethylamino)phenyl]methanone, [4-(dimethylamino)phenyl][4-(methyl-amino)phenyl]methanone, bis[4-(methylamino)phenyl]methanone, (4-amino- phenyl)[4-(methylamino)phenyl]methanone, bis(4-amino phenyl)methanone, (4-amino 4-(dimathylamino)benzaldehyde. According to LC–MS data, two pathways proposed. showed line LC 50 28.9 µg/ml 90 79.7 µg/ml. On other hand, bio-degraded no toxicity Finally, this proved could be used efficient, renewable, eco-friendly, sustainable biotechnology tool treatment effluent.

Language: Английский

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Ozonation, electrochemical, and biological methods for the remediation of malachite green dye wastewaters: A mini review

Sustainable Chemistry for the Environment, Journal Year: 2023, Volume and Issue: 3, P. 100033 - 100033

Published: Aug. 12, 2023

The extensive usage of malachite green (MG) dyes in the fish and dye industries cause serious water pollution, leading to catastrophic effects on living organisms environment. In addressing challenges health risks related use MG, different removal strategies have been studied developed. This review presents recent advances mechanistic pathways involved ozonation, electrochemical advanced oxidation (electrooxidation), biological techniques for MG. successful applications these decontaminating from MG are discussed. Furthermore, combined enhancing reduction operation costs presented as it was shown some cases be more effective than individual remediation methods.

Language: Английский

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Calcined biomass-bentonite composites as eco-friendly adsorbents for the treatment of toxic anionic and cationic dye wastewater

Results in Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 16, P. 100279 - 100279

Published: Aug. 1, 2024

Adsorption is a suitable technique for decontamination of organic dye wastewaters. Herein, we comparatively investigated the adsorption performance bentonite (BEN) and its modification with groundnut shell (BGS) palm kernel (BPS) methylene blue (MB) congo red (CR) dyes removal from aqueous solution. BGS BPS were prepared by calcination at 300 °C 6 h characterized using BET, SEM, EDS FTIR to determine their textural properties, morphologies, elemental compositions, functional groups. The BET surface examination revealed that area BEN was enhanced 78 m2/g 195 141 after (BPS), respectively. process in batch system subjected comprehensive experimentation investigate effect adsorbent dosage, contact time, temperature, initial concentration, pH. fitted isotherm kinetic models results BEN, BGS, towards MB CR can be best described Temkin, Freundlich pseudo-second order models. capacities (qmax) uptake are 10.61, 10.85 10.93 mg, while exhibited 8.83, 6.87 5.86 mg/g, thermodynamics study spontaneous, feasible, endothermic nature. governed electrostatic attraction involvement physical chemical adsorption. This suggests biomass-modified sustainable, cost-effective, non-toxic, greener approach eliminating Furthermore, method does not only achieve substantial dyes, but also offers considerable energy savings operational cost reductions real-time based on water quality data. present novel, sustainable improve natural treatment efficiency compliance.

Language: Английский

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Synthesis of ZIF-8 composite (g-C3N4@ZIF-8/Ag3PO4) as a catalyst for the malachite green and tetracycline degradation

Inorganic Chemistry Communications, Journal Year: 2025, Volume and Issue: unknown, P. 114345 - 114345

Published: March 1, 2025

Language: Английский

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Sweety, salty, sour, and romantic biochar-supported ZnO: highly active composite catalysts for environmental remediation

Emergent Materials, Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 13, 2023

Abstract The present work focuses on valorizing the various biochar supports of nano-catalysts and investigates effect type initial biomass deposition salient physico-chemical features zinc oxide (ZnO) nanoparticles. In this regard, we have used four different biomasses, namely, sugarcane bagasse ( Saccharum officinarum ), algae Phaeophyta mandarin orange peels Citrus reticulata China rose petals Rosa chinensis ) as sources biochar. Their wet impregnation with acetate was followed by pyrolysis at 500 °C. It led to (nicknamed “sweety,” “salty,” “sour,” “romantic” biochar, respectively) loaded very well dispersed, 20–360 nm-sized (mostly) ZnO Interestingly, depending used, size, shape (quartz-like, semi-spherical, spherical, semi-cauliflower, needle or rod-like), degree crystallinity nanoparticles (hexagonal crystal system) vary, in spite all other synthesis parameters being similar. Nanoparticle-induced graphitization crystallization been also observed Raman spectroscopy. malachite green dye mineralization efficiency presence H 2 O biochar-supported nanocatalysts 15.1%, 46.3%, 99.9%, 67.9%, 66.4% for , china petals, algae, peels, bagasse-supported catalyst respectively. Malachite removal fits a pseudo-first-order kinetic model R = 0.9701 (at biochar-ZnO). 6.6 times enhancement is compared just . recyclability test impregnated after 5 cycles indicates levels up 81.4%. Beyond these scientific results, based principle waste valorization sustainable development circular economy, one hand, addresses UN Sustainable Development Goals 6, 13, 14, hand. clear that new romance field materials science future. Graphical

Language: Английский

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Synthesis of Flower-Like CuBi2O4 Microspheres and Its Photocatalytic Activity

Trends in Sciences, Journal Year: 2024, Volume and Issue: 21(2), P. 7200 - 7200

Published: Jan. 1, 2024

In this study, visible-light copper bismuth oxide (CuBi2O4) photocatalyst were synthesized via co-precipitation (CuBi2O4-C) and microwave-assisted methods (CuBi2O4-M). The X-ray powder diffraction (XRD) analysis reveals the presence of pure tetragonal, along with band gaps 2.9 eV in both samples. method produced flower-like CuBi2O4 microspheres, which had a larger BET surface area demonstrated highest photocatalytic performance, approximately 83.4 % decolorization malachite green (MG) dye under visible light. Therefore, research suggested facile strategy for fast synthesis microspheres mild reaction conditions. use microwave heat treatment is faster more efficient way to materials, while also being cost-effective energy-saving. HIGHLIGHTS offer promising approach photocatalysis, particularly degradation This study highlights potential enhancing performance materials GRAPHICAL ABSTRACT

Language: Английский

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