Methylene blue adsorption from aqueous solution using activated carbon of spathodea campanulata

Results in Engineering, Год журнала: 2024, Номер 21, С. 101910 - 101910

Опубликована: Фев. 10, 2024

This study aimed to determine the effectiveness of Spathodea Campanulata derived activated carbon in removing methylene blue (MB) from wastewater. The was prepared through chemical impregnation with H3PO4 and thermal activation at 500 °C for 2 h. adsorption experiments were optimized using 24 full factorial designs, considering pH, contact time, initial MB concentration, adsorbent dosage as parameters. characterization revealed favorable properties, including multiple surface functional groups, a maximum specific area 1054 m2/g, highly porous morphology. conditions achieved removal efficiency 99.95%, pH 9, time 120 min, dye concentration 90 mg/L, an 0.2 g/100 mL being most effective Freundlich isotherm model provided best fit experimental data, indicating heterogeneous multilayer surface. kinetics indicated that chemisorption primary mechanism. In conclusion, based could serve cost-effective aqueous solutions

Язык: Английский

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Synthesis of a chitosan@hydroxyapatite composite hybrid using a new approach for high-performance removal of crystal violet dye in aqueous solution, equilibrium isotherms and process optimization

Journal of the Taiwan Institute of Chemical Engineers, Год журнала: 2023, Номер 149, С. 105006 - 105006

Опубликована: Июнь 30, 2023

Язык: Английский

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Application of Walnut Shell Biowaste as an Inexpensive Adsorbent for Methylene Blue Dye: Isotherms, Kinetics, Thermodynamics, and Modeling

Separations, Год журнала: 2023, Номер 10(1), С. 60 - 60

Опубликована: Янв. 16, 2023

This research aimed to assess the adsorption properties of raw walnut shell powder (WNSp) for elimination methylene blue (MB) from an aqueous medium. The initial MB concentration (2–50 mg/L), mass biomaterial (0.1–1 g/L), contact time (10–120 min), medium’s pH (2–12), and temperature (25–55 °C) were optimized as experimental conditions. A maximum capacity 19.99 mg/g was obtained at 50 mg/L, a medium 6.93 25 °C, using 0.2 g/L WNSp. These conditions showed that dye process occurred spontaneously. Different analytical approaches used characterize WNSp biomaterial, including functional groups involved in adsorption, surface characteristics morphological features before after uptake, identification based on their diffraction pattern. isotherm data analyzed by Langmuir Freundlich models dye. corresponding values parameter RL between 0.51 0.172, which confirmed WNSp’s favorable adsorption. kinetic examined, pseudo-second-order model shown be more suitable describing process, with excellent determination coefficient (R2 = 0.999). exchanged standard enthalpy (H° −22.456 KJ.mol−1) calculated van ‘t Hoff equation, it proven exothermic. spontaneous nature feasibility validated negative (G°) ranging −2.580 −0.469 different temperatures. It established may employed novel, effective, low-cost adsorbent solutions.

Язык: Английский

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Aleppo pine seeds (Pinus halepensis Mill.) as a promising novel green coagulant for the removal of Congo red dye: Optimization via machine learning algorithm

Journal of Environmental Management, Год журнала: 2023, Номер 331, С. 117286 - 117286

Опубликована: Янв. 12, 2023

Язык: Английский

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Enhanced Adsorption Capacity of Methylene Blue Dye onto Kaolin through Acid Treatment: Batch Adsorption and Machine Learning Studies

Water, Год журнала: 2024, Номер 16(2), С. 243 - 243

Опубликована: Янв. 10, 2024

Algerian kaolinite, sourced from Djebel Debbagh nuance 3 (DD3), was used as a low-cost adsorbent to remove methylene blue (MB) dye water. Its adsorption capacity enhanced through sulfuric acid treatment (treated-DD3). In response the urgent demand for clean water, various technologies have been developed address removal wastewater. This study, specifically delving into of textile wastewater, examined efficacy treated-DD3 processes. The increased surface area and pore volume DD3. X-ray diffraction showed crystalline phases in both, with having higher crystallinity. Fourier-transform infrared spectroscopy found no significant differences post-acid treatment. Scanning electron microscopy revealed DD3 had large, stacked particles low area, while porosity smoother surface. Various parameters affecting MB were studied. Langmuir Freundlich models isotherm parameters. Treated-DD3 exhibited (64.58 mg/g according model) than (44.48 mg/g). Thermodynamic analysis indicated spontaneous endothermic onto both DD3-BM treated-DD3-BM systems under different pH conditions. effectively reduced chemical oxygen (from 304.056 mg/L 34.44 mg/L) biological 80 20 real rapid decolorization, surpassing 93% within first 7 min experiment. Gaussian process regression particle swarm optimization (GPR–PSO) predicted (R = 0.9989, R2 0.9978, adj-R2 RMSE 1.1390, MAE 0.3926).

Язык: Английский

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Evaluating the Effectiveness of Coagulation–Flocculation Treatment Using Aluminum Sulfate on a Polluted Surface Water Source: A Year-Long Study

Water, Год журнала: 2024, Номер 16(3), С. 400 - 400

Опубликована: Янв. 25, 2024

Safeguarding drinking water is a major public health and environmental concern because it essential to human life but may contain pollutants that can cause illness or harm the environment. Therefore, continuous research necessary improve treatment methods guarantee its quality. As part of this study, effectiveness coagulation–flocculation using aluminum sulfate (Al2(SO4)3) was evaluated on very polluted site. Samplings were taken almost every day for month from site, samples characterized by several physicochemical properties, such as hydrogen potential (pH), electrical conductivity, turbidity, organic matter, ammonium (NH+4), phosphate (PO43−), nitrate (NO3−), nitrite (NO2−), calcium (Ca2+), magnesium (Mg2+), total hardness (TH), chloride (Cl−), bicarbonate (HCO3−), (SO42−), iron (Fe3+), manganese (Mn2+), (Al3+), potassium (K+), sodium (Na+), complete alkalimetric titration (TAC), dry residue (DR). Then, these treated with Al2(SO4)3 jar test method, which common method determine optimal amount coagulant add based characteristics. A mathematical model had been previously created support vector machine predict dose according parameters temperature, pH, TAC, turbidity. This step repeated at end each year, second characterization carried out in order compare them those raw water. The results showed effective elimination various pollutions, high rate, thus demonstrating Al2(SO4)3. measured after significant reduction majority parameters. These demonstrated eliminating pollutions present They also stress importance continued field quality protect

Язык: Английский

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Efficiency of Hydrogen Peroxide and Fenton Reagent for Polycyclic Aromatic Hydrocarbon Degradation in Contaminated Soil: Insights from Experimental and Predictive Modeling

Processes, Год журнала: 2024, Номер 12(3), С. 621 - 621

Опубликована: Март 21, 2024

This study investigates the degradation kinetics of polycyclic aromatic hydrocarbons (PAHs) in contaminated soil using hydrogen peroxide (H2O2) and Fenton process (H2O2/Fe2+). The effect oxidant concentration molar ratio on PAH decomposition efficiency is examined. Results reveal that increasing H2O2 above 25 mmol/samples leads to a slight increase rate constants for both first- second-order reactions. demonstrates higher compared alone, achieving yields ranging from 84.7% 99.9%. pH evolution during oxidation influences degradation, with alkaline conditions favoring lower elimination rates. Fourier-transform infrared (FTIR) spectroscopy analysis indicates significant PAHs after treatment, oxidants showing comparable efficacy complete hydrocarbon degradation. mechanisms by involve hydroxyl radical formation, latter exhibiting greater due Fe2+ catalysis. Gaussian regression (GPR) modeling accurately predicts reduced concentration, optimized ARD-Exponential kernel function demonstrating superior performance. Improved Grey Wolf Optimizer algorithm facilitates optimization reaction conditions, yielding high degree agreement between experimental predicted values. A MATLAB 2022b interface developed efficient prediction C/C0, critical parameter studies. integrated approach offers insights into optimizing oxidant-based remediation techniques, potential applications remediation.

Язык: Английский

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Adsorptive removal of cationic dye from aqueous solutions using activated carbon prepared from Crataegus monogyna/sodium alginate/polyaniline composite beads: Experimental study and molecular dynamic simulation

Journal of Molecular Liquids, Год журнала: 2024, Номер 408, С. 125372 - 125372

Опубликована: Июнь 27, 2024

Язык: Английский

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Fundamental properties and sustainable applications of the natural zeolite clinoptilolite

Environmental Science and Pollution Research, Год журнала: 2024, Номер unknown

Опубликована: Май 23, 2024

This review explores a set of sustainable applications clinoptilolite, natural zeolite abundant around the world in different localities. Thanks to its physico-chemical properties this material is extremely versatile for several applications, ranging from environmental catalysis and CO

Язык: Английский

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Machine Learning in Computational Design and Optimization of Disordered Nanoporous Materials

Materials, Год журнала: 2025, Номер 18(3), С. 534 - 534

Опубликована: Янв. 24, 2025

This review analyzes the current practices in data-driven characterization, design and optimization of disordered nanoporous materials with pore sizes ranging from angstroms (active carbon polymer membranes for gas separation) to tens nm (aerogels). While machine learning (ML)-based prediction screening crystalline, ordered porous are conducted frequently, porosity receive much less attention, although ML is expected excel field, which rich ill-posed problems, non-linear correlations a large volume experimental results. For micro- mesoporous solids carbons, silica, aerogels, etc.), obstacles mostly related navigation available data transferrable easily interpreted features. The majority published efforts based on obtained same work, datasets often very small. Even limited data, helps discover non-evident serves material production optimization. development comprehensive databases low-level structural sorption characteristics, as well automated synthesis/characterization protocols, seen direction immediate future. paper written language readable by chemist unfamiliar science specifics.

Язык: Английский

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