Enhancing fluoride ion removal from aqueous solutions and glass manufacturing wastewater using modified orange peel biochar magnetic composite with MIL-53

Environmental Research, Год журнала: 2024, Номер 262, С. 119825 - 119825

Опубликована: Авг. 23, 2024

Язык: Английский

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Activated Carbon Prepared from Waste Coffee Grounds: Characterization and Adsorption Properties of Dyes

Materials, Год журнала: 2024, Номер 17(13), С. 3078 - 3078

Опубликована: Июнь 22, 2024

Spent coffee grounds (SCGs) have great potential as a useful, value-added biological material. In this context, activated carbon (AC) was prepared from SCGs by an activation process using H3PO4 at 600 °C in the air and used adsorbent for azo dye AO7, model molecule colorants found textile industry effluents. X-ray diffraction, SEM BET revealed that AC predominantly amorphous, consisting of powder 20–100 µm particles with mesopores averaging 5.5 nm pore size. Adsorption kinetics followed pseudo-second-order law, while Langmuir best fitted experimental isotherm data (maximum capacity 119.5 mg AO7 per g). The thermodynamic parameters adsorption endothermic spontaneous. All characterizations indicated occurred physisorption via mainly π–π interactions. removal efficiency optimized means Box–Behnken design response surface methodology 98% initial concentration 20 mg·L−1 pH 7.5 dose 0.285 g·L−1 contact time 40 min. These results clearly show can be useful material efficiently removing organic matter aqueous solutions.

Язык: Английский

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Adsorption of Direct Red 81 onto Activated Carbon Prepared from Olive Stones: Equilibrium and Kinetic Studies

Advances in Science, Technology & Innovation/Advances in science, technology & innovation, Год журнала: 2025, Номер unknown, С. 325 - 330

Опубликована: Янв. 1, 2025

Язык: Английский

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Waste coffee biochar and bi-oil composite modified rejuvenated asphalt: Preparation, characterization, and performance evaluation

Construction and Building Materials, Год журнала: 2024, Номер 450, С. 138588 - 138588

Опубликована: Окт. 7, 2024

Язык: Английский

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Activated Carbon Prepared from Waste Coffee Grounds: Characterization and Adsorption Properties of Dyes

Опубликована: Май 14, 2024

Spent coffee grounds (SCG) have great potential as a useful, value-added biological material. In this context, activated carbon (AC) was prepared from SCG by an activation process using H3PO4 at 600°C in air and used adsorbent for the azo dye AO7, model molecule colorants found textile industry effluents. X-ray diffraction, SEM BET revealed that AC predominantly amorphous, consisting of powder 20-100 µm particles with mesopores averaging 5.5 nm pore size. Adsorption kinetics followed pseudo-second-order law, while Langmuir best fitted experimental isotherm data (maximum capacity 119.5 mg AO7 per g). Thermodynamic parameters adsorption endothermic spontaneous. All characterizations indicated occurred physisorption via mainly - interactions. The removal efficiency optimized means Box-Behnken design response surface methodology 98% initial concentration 20 mg.L-1 pH 7.5 dose 0.285 g.L-1 contact time 40 min. These results clearly show can be useful material efficiently removing organic matter aqueous solutions.

Язык: Английский

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Modified Sugarcane leaf biochar for remediation of polycyclic aromatic hydrocarbons (PAHs) from wastewater: Activation, optimization, mechanism

Bioresource Technology Reports, Год журнала: 2025, Номер unknown, С. 102113 - 102113

Опубликована: Апрель 1, 2025

Язык: Английский

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Biosorption of Copper (II) Ions Using Coffee Grounds—A Case Study

Sustainability, Год журнала: 2024, Номер 16(17), С. 7693 - 7693

Опубликована: Сен. 4, 2024

Industrial and domestic human activities have a significant impact on the environment, contributing, among other things, to increased pollution of natural waters. The spread heavy metals is particularly dangerous health life living organisms due high accumulation potential of, others, Cr (VI), Zn (II), Cu Cd Fe Ni (II). In order remove, concentrate, and/or recover ions these metals, various physical chemical methods are commonly used. this study, spent coffee grounds (SCGs) efficiently removed copper from simulated aqueous solutions, especially at low metal ion concentrations. Without additional modification, performed comparably traditional adsorbents like activated carbon or exchangers. It was found that used ground effectively (II) wide range concentrations, with highest efficiency (over 85%) obtained for dilute solutions. On hand, regeneration tests using 10% hydrochloric acid solution successfully restored residue adsorbent, achieving desorption about 35%. This method concentrated facilitated efficient recovery by minimizing usage. sorbent an innovative, cheap, easy-to-use material sorption capabilities.

Язык: Английский

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Strategies toward Green Deal Implementation in the context of SCG reuse and recovery in the Circular Economy Model

Desalination and Water Treatment, Год журнала: 2024, Номер unknown, С. 100953 - 100953

Опубликована: Дек. 1, 2024

Язык: Английский

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