"Theory of Pore Conflation" and "Shubhjyot's equation" in the treatment of Brilliant green dye-contaminated water using Jamun leaves biochar

Biochar, Год журнала: 2025, Номер 7(1)

Опубликована: Янв. 13, 2025

Язык: Английский

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Machine learning-driven prediction of biochar adsorption capacity for effective removal of Congo red dye

Carbon Research, Год журнала: 2025, Номер 4(1)

Опубликована: Янв. 22, 2025

Abstract Congo red, a widely utilized dye in the textile industry, presents significant threat to living organisms due its carcinogenic properties and non-biodegradable nature. This study proposes data-driven machine-learning approach optimize biochar characteristics environmental conditions maximize adsorption capacity of for removal red dye. Therefore, six machine learning models were trained tested on dataset containing eleven input parameters (related conditions) capacity. The evaluated using performance metrics such as R-squared ( R 2 ), Mean Squared Error (MSE), Root (RMSE). With highest (0.9785) lowest RMSE (0.1357), Random Forest Regression (RF) outperformed other models. DT XGB also performed well, achieving slightly lower values 0.9741 0.9577, respectively. LR model worst, with (0.4575) (0.6821). Moreover, reliability these was validated 10-fold cross-validation method. RF once again best an value 0.9762. Feature analysis revealed that initial concentration relative dosage C 0 specific surface area BET pore volume PV ) are most factors affecting biochar, while carbon content oxygen nitrogen molar ratio [ (O + N)/C ], diameter D had minimal impact. research demonstrates can accurately predict biochar’s contaminant capacity, enhancing wastewater treatment promoting efficient, cost-effective management. Graphical

Язык: Английский

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Preparation and Adsorption Properties of Corn Straw Amphoteric Adsorbent for Cationic and Anionic Dyes

ChemistrySelect, Год журнала: 2025, Номер 10(4)

Опубликована: Янв. 1, 2025

Abstract A highly efficient and environmentally friendly corn straw amphoteric adsorbent (CSAA) was produced using pretreatment, etherification, graft copolymerization of (CS) for the purpose removing methylene blue (MB) acid red 1 (AR1). The CSAA subjected to characterize utilizing SEM, FTIR, XRD, Zeta surface potential, TG. impacts pH value, dosage, dye concentration, salt concentration on adsorption MB AR1 by were examined. concurrent removal cationic anionic dyes under different levels has been successfully shown, exhibiting potential utility in wastewater. pseudo‐second‐order kinetic equation indicated a superior match with empirical data, suggesting that principal mechanism may be attributable ionic attraction. equilibrium isotherm study demonstrated stronger conformance Langmuir model maximum capacity reached 356.2 408.2 mg·g −1 AR1, respectively. Furthermore, thermodynamic parameters revealed reaction spontaneous exothermic.

Язык: Английский

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Cleaner and circular bioeconomy approaches for the application of biocomposites in simultaneous dye adsorption and resource recovery

Elsevier eBooks, Год журнала: 2025, Номер unknown, С. 381 - 395

Опубликована: Янв. 1, 2025

Язык: Английский

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Areca Catechu Biochar and Nano-Biochar as Adsorbents for Congo Red: Synthesis, Characterization, and Performance Evaluation

BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS, Год журнала: 2025, Номер 20(1), С. 112 - 128

Опубликована: Фев. 10, 2025

The presence of hazardous synthetic dyes such as Congo Red in industrial wastewater poses a significant environmental threat. This study explores the potential biochar (BC) and nano-biochar (nano-BC), derived from Areca catechu husk sustainable adsorbents for dye removal. Nano-BC was synthesised via hydrothermal carbonisation mechanical ball milling, leading to enhanced structural surface properties. X-ray Diffraction (XRD) revealed that Pinang is predominantly amorphous, while BC exhibits increased crystallinity with sharp peaks, nano-BC demonstrates highest nanostructural refinement. Fourier Transform Infra (FTIR) confirmed transformation aliphatic-rich raw biomass into aromatic-dominant structures nano-BC, showing more pronounced graphite-like features. Scanning Electron Microscope (SEM) illustrated morphological evolution, exhibiting refined, uniformly porous structures. BET analysis has significantly higher area 41.38 m²/g smaller pore size 8.4928 nm compared 22.38 15.39 nm, enhancing adsorption capacity. Furthermore, kinetics followed pseudo-second-order model, isothermal monolayer maximum capacity (Qmax = 154.526 mg/g). These findings highlight superior performance emphasising its environmentally friendly water treatment applications. Copyright © 2025 by Authors, Published BCREC Publishing Group. an open access article under CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Язык: Английский

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A study of alginate-coconut frond biochar composite beads for methylene blue removal

AIP conference proceedings, Год журнала: 2025, Номер 3271, С. 050003 - 050003

Опубликована: Янв. 1, 2025

Язык: Английский

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Degradation of Acid Orange II by FeOCl/Biochar-Catalyzed Heterogeneous Fenton Oxidation

Separations, Год журнала: 2025, Номер 12(4), С. 101 - 101

Опубликована: Апрель 21, 2025

In recent years, the rapid development of industry has led to discharge large quantities pollutants, including harmful dyes, into water sources, thereby posing potential threats human health and environment. FeOCl biochar have their own shortcomings as a mediator in heterogeneous Fenton process. To make both materials useful, supported on bamboo (FeOCl/BC) was prepared by calcination using FeCl3·6H2O powder raw materials, composite’s catalytic activities were explored with acid orange II (AO-II) target pollutant. The degradation efficiency FeOCl/BC composites AO-II determined testing mass ratio BC, initial pH, temperature, H2O2 concentration, catalyst addition, addition coexisting inorganic anions, natural organic matter. increased activation generate •OH for removal accelerated cycle Fe3+/Fe2+. rate Fe1C0.2 composite 97.1% when BC 1:0.2 (Fe1C0.2), which higher than that pure components (FeOCl or BC) at pH = 6.1. Moreover, after five reuses, still showed high activity AO-II, 83.3% low loss. capture experiments active material mainly dominated •OH; however, •O2− h+ played minor roles. synthesized could be applied contaminants such efficiency.

Язык: Английский

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Adsorptive removal of crystal violet from aqueous solution by bioadsorbent

Biomass Conversion and Biorefinery, Год журнала: 2023, Номер unknown

Опубликована: Ноя. 18, 2023

Язык: Английский

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Adsorption of congo red from aqueous solution using rice husk, calcined kaolin clay, and microwaved rice husk clay hybrid

Discover Chemistry., Год журнала: 2024, Номер 1(1)

Опубликована: Авг. 9, 2024

Abstract The present study focused on the comparative efficiency of rice husk (RH), calcined kaolin clay (CKC), and microwave hybrid (MRHCH) in adsorption congo red (CR) from aqueous solution. was locally sourced pulverized, at 650 °C for two hours, while generated by microwave-impregnating an equal mixture RH CKC 15 min a medium temperature. resulting adsorbents were characterized using scanning electron microscope (SEM) Fourier transform infrared (FTIR) spectroscopy to evaluate their surface morphology functional groups before after adsorption. effect process variables comprising initial dye concentration, contact time, pH, adsorbent dosage investigated obtained equilibrium data modelled Langmuir, Temkin, Freundlich isotherms. kinetics computed Pseudo first order second-order reaction kinetics. results indicated that all three increased with increasing time. On other hand, MRHCH high concentration exhibited low concentration. Isotherm studies Temkin isotherm best fits kinetic showed pseudo-second-order model described CR adsorption, indicating chemisorption as mechanism demonstrated its exceptional capacity maximum Langmuir 4.008 mg/g. found be spontaneous, endothermic, more random solid-solution interface thermodynamic investigations. concludes has great promise wastewater treatment applications very efficient removal.

Язык: Английский

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Okara biochar immobilized calcium-alginate beads as eosin yellow dye adsorbent

Results in Chemistry, Год журнала: 2023, Номер 7, С. 101268 - 101268

Опубликована: Дек. 16, 2023

Okara biochar was obtained through the pyrolysis process and continued by encapsulation into beads form to ensure does not leach environment. The utilization of okara (OBB) as an adsorbent eosin yellow (EY) dye developed due its porosity high surface area properties. adsorption kinetics EY OBB follows pseudo second order (PSO) model while isotherms follow Freundlich isotherm with reaction rate constants 19.71 g mg-1 minutes-1 KF = 12.12 L mol-1. results show that is easily separated from water has percentage up 80%.

Язык: Английский

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