Bifunctional TiO2 – cellulose based nanocomposites for synergistic adsorptive-photocatalytic removal of methyl orange: Response modelling and optimization

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 141753 - 141753

Опубликована: Март 1, 2025

Removal of azo dyes from aquatic environments represents a global challenge. Herein, by utilizing the waste mandarin peels as cellulose source (MP500), bifunctional adsorbent-photocatalyst, TiO2@MP500, has been prepared via one-pot hydrothermal synthesis. Taking advantage this dual role, remediation methyl orange (MO) successfully addressed. Characterization tools corroborated anchoring TiO2 and successful synthesis TiO2@MP500. SEM/EDX/TEM analyses confirmed formation nanoparticles on carbonaceous surface. A substantial increase in BET surface area following impregnation was perceived (184.61 m2/g case 3 %TiO2@MP500). Similarly, thermal stability developed composite notably improved reflected thermogravimetric analysis. XRD analysis existence layer with anatase phase TiO2. Optimization adsorbent-photocatalyst performance approached using Box-Behnken design. Five factors were premeditated, pH MO solution, adsorbent dose, reaction time, concentration TiO2, [MO]. maximum sorption capacity 104.2 mg/g reckoned, pseudo-second-order isotherm. Furthermore, %TiO2@MP500 achieved decolorization efficiency 98.87 % ~30 min. The nanocomposite effectively revived could be exploited for 6 cycles, bolstering 90.91 %.

Язык: Английский

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Boron adsorption from aqueous solutions through column study: desorption mechanisms, regeneration techniques, and kinetic insights

Desalination and Water Treatment, Год журнала: 2024, Номер 320, С. 100586 - 100586

Опубликована: Июль 9, 2024

Recovering boron from aqueous solutions presents a significant opportunity for enhancing sustainable resource management and reducing costs within the oil gas industry. This research focuses on evaluating newly synthesized adsorbents. Specifically, it investigates adsorption desorption in fixed bed columns of 25 cm length 2.5 diameter, utilizing depths at 2.5, 5, 7.5 10 cm. Four different flow rates (2, 4, 6, 8 mL/min) were used, all maintaining constant concentrations 85 mg/L, which determined as optimal through prior batch studies. In breakthrough, maximum minimum points ranged (60,12) minutes to (280,100) minutes, respectively, across experimental conditions. The uptake (qe) reaches 22.86 mg/g, was 5.85 mg/g with heights cm, respectively. kinetic analysis revealed that Thomas model provided strong fit extraction, having R2 ratings between 0.9 0.95. efficiency reached 75 %. Notably, extraction using Derived Boron Adsorbent)DBA( 160 mg under conditions depth, 48 cm3 pore volume, rate 6 mL/min. conclusions show how well DBA works adsorb insights into process. Therefore, selected preferred method because its exceptional ability absorb efficiently high sorption capacity.

Язык: Английский

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A review on the application of biochar as an innovative and sustainable biocarrier material in moving bed biofilm reactors for dye removal from environmental matrices

Environmental Geochemistry and Health, Год журнала: 2024, Номер 46(9)

Опубликована: Июль 19, 2024

Язык: Английский

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Removal of anionic dye from textile effluent using zirconium phosphate loaded polyaniline-graphene oxide composite: Lab to pilot scale evaluation

Journal of Environmental Management, Год журнала: 2024, Номер 368, С. 122068 - 122068

Опубликована: Авг. 7, 2024

Язык: Английский

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Determination of heavy metals contamination, risk prediction and antioxidant properties of anti-malarial herbal mixture sold in Kano state, Nigeria

Case Studies in Chemical and Environmental Engineering, Год журнала: 2023, Номер 9, С. 100576 - 100576

Опубликована: Дек. 4, 2023

Herbal remedies are alternative option for the treatment, management, and prevention of different disease conditions such as malaria in most African communities due to their easy access economic advantages. Heavy metals contaminations from plant ingredients, processing or anthropogenic activities may render herbal harmful human consumption. Therefore, risk assessment contaminating antioxidant were determined Agbo, a popular anti-malarial herbs mixture sold Kano. The samples collected locations across Kano State labelled A, B, C. concentrations some cancer-causing (Cadmium Cd; Lead Pb Chromium Cr) non-cancer-causing Copper Cu; Nickel, Ni sample evaluated. properties also evaluated using various assays, which include 2,2-diphenyl-2-picrylhydrazyl (DPPH), hydrogen peroxide (H2O2) scavenging actions, Metal Chelating, phosphomolybdate test Reducing power Agbo. Some phytochemicals (Phenolic acids, flavonoids, tannins, saponins alkaloids) found be present. values predicting probability developing cancer ailment after ceaseless consumption mixtures was higher than standard threshold limit (>10−4) established by USEPA. While non-cancer predicted index projected Cr, Cd (from B) leading metal pollutants posing more one (>1), while A C) showed relative safe quotient. IC50 value reducing exhibiting almost same with C having highest (IC50 6.32 μg/mL), followed B 6.36 μg/mL) 6.39 μg/mL). This suggests that excess this generally beneficial health-wise but unsafe heavy could expose consumers probable risks other biological process distraction.

Язык: Английский

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Enhanced Adsorption of Methyl Orange from Aqueous Phase Using Chitosan–Palmer Amaranth Biochar Composite Microspheres

Molecules, Год журнала: 2024, Номер 29(8), С. 1836 - 1836

Опубликована: Апрель 18, 2024

To develop valuable applications for the invasive weed Palmer amaranth, we utilized it as a novel biochar source and explored its potential methyl orange adsorption through synthesis of chitosan-encapsulated amaranth composite microspheres. Firstly, prepared microspheres were characterized by scanning electron microscopy Fourier transform infrared spectroscopy demonstrated to have surface area 19.6 m

Язык: Английский

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Bacillus sp. KS38 strain for sustainable caffeine degradation: Isolation, identification and optimization using response surface methodology

Desalination and Water Treatment, Год журнала: 2024, Номер 320, С. 100628 - 100628

Опубликована: Июль 23, 2024

Caffeine, a significant naturally occurring alkaloid in beverages like tea and coffee, can be degraded by bacteria. Prolonged caffeine consumption stimulate adrenal glands, cause irregular muscle activity, cardiac arrhythmias, withdrawal symptoms such as headaches fatigue. Beyond its health-related concerns, the environmental impact of degradation is noteworthy. Effluents from coffee industries contain high concentrations, discharge effluents into lakes poses risk to portability drinking water. This study isolated novel bacterium agricultural soil, identified Bacillus sp. KS38 through 16 S rRNA gene sequencing, which metabolize sole carbon nitrogen source. The exhibited Gram-positive characteristics. Response surface methodology (RSM) optimized bacterial growth conditions. relevant parameter for was obtained first screening parameters using Plackett-Burman design. Using central composite design (CCD) RSM, important were determined achieve ideal conditions: 0.66 g/L caffeine, 0.85 glucose, pH 6.83, 20.5 °C. RSM predicted 0.591, confirmed experimentally. has potential applications wastewater treatment bioremediation.

Язык: Английский

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Statistical analysis and optimization of mercury removal from aqueous solution onto green synthesized magnetite nanoparticle using central composite design

Biomass Conversion and Biorefinery, Год журнала: 2024, Номер unknown

Опубликована: Апрель 27, 2024

Язык: Английский

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Kinetics of Lead Sorption from Aqueous Solutions on Nanostructured Cryogel Modified with Organic Polymers

Colloid Journal, Год журнала: 2024, Номер 86(3), С. 408 - 417

Опубликована: Май 30, 2024

Язык: Английский

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Кинетика сорбции свинца из водных растворов на наноструктурированном криогеле, модифицированном органическими полимерами

Коллоидный журнал, Год журнала: 2024, Номер 86(3)

Опубликована: Июнь 15, 2024

Язык: Русский

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