Influence of pre-treatment method and origin on Cr(VI) removal performance by ball-milled natural pyrite

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162958 - 162958

Published: March 1, 2025

Language: Английский

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Ball-Milled Spent Coffee Ground Biochar Effectively Removes Caffeine from Water

Water, Journal Year: 2025, Volume and Issue: 17(6), P. 881 - 881

Published: March 19, 2025

Caffeine in aquatic ecosystems is an emerging contaminant causing significant environmental concern. In this work, spent coffee ground (SCG) was pyrolyzed at 300, 450, and 600 °C to produce pristine SCG biochars (CG), which were then ball-milled (BMCG). A batch experiment with showed that 450 had the highest capacities adsorb caffeine. Subsequently, CG450 (BMCG450) selected for further analysis. The results ball milling dramatically augmented specific surface area oxygen-containing functional groups of biochar. Langmuir maximum caffeine adsorption capacity 82.65 mg/g. Both solution pH ionic strength affected removal by BMCG450. As increased, increased electrostatic repulsion limited onto However, increase ion slightly enhanced because screening effect cations. biochar also high efficiency a completely mixed flow reactor under continuous conditions. Our study indicates can serve as viable sorbent from water.

Language: Английский

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Carbon Capture Efficiency of Mechanically Activated Australian Halloysite-Rich Kaolin with Varying Iron Impurities and Its Potential Reuse for Removing Dyes from Water

Minerals, Journal Year: 2025, Volume and Issue: 15(4), P. 399 - 399

Published: April 10, 2025

Sustainable strategies are required to mitigate elevated atmospheric CO2 levels. Achieving that by adsorption, especially using clay-based adsorbents, drew attention. These even more promising when these adsorbents obtained low-cost modifications. This study evaluates the effect of ball milling on carbon capture performance Australian halloysite nanotube (HNT)-rich kaolin samples: one without iron impurities (Hal) and other with (HalFe). The was mainly nested within illite/mica minerals in HalFe. Samples were ball-milled for 30 60 min, their sorption assessed at various pressures temperatures. Crystallography, electronic microscopy, surface area charge characterization revealed reduced length increased width tubular structure following milling, leading higher specific compromising crystallinity. Hal 14% 20 bar 15 °C after min a ~300% rise near-atmospheric pressures. Conversely, negatively affected HalFe, likely due iron/illite-mica-related damage during milling. infrared, thermographic analyses physisorption as primary mechanism. Since direct disposal CO2-laden materials is against sustainability principles, tested methylene blue removal from aqueous solutions, achieving ~83% ~91% (HalFe) efficiencies. highlights HNTs-rich clays’ valorization potential utilization (CCU).

Language: Английский

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Transition metal phosphide/ molybdenum disulfide heterostructures towards advanced electrochemical energy storage: recent progress and challenges

RSC Advances, Journal Year: 2025, Volume and Issue: 15(17), P. 13397 - 13430

Published: Jan. 1, 2025

Transition metal phosphide @ molybdenum disulfide (TMP@MoS 2 ) heterostructures can solve the major problems in field of renewable energy storage.

Language: Английский

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Eliminating Manifold Pharmaceutical Pollutants with Carbon Nanoparticles Driven via a Short-Duration Ball-Milling Process

Surfaces, Journal Year: 2024, Volume and Issue: 7(3), P. 493 - 507

Published: July 18, 2024

One of the major problems facing humanity in all parts world is water pollution. Since carbon nanoparticles (CPs) are known for their excellent absorbability, this study explored preparing CPs via a facilitated ball-milling protocol. Four CP products were prepared with friction enhancer being variated, typically 0-CPs, 2.5-CPs, 5-CPs, and 10-CPs. The four sorbents characterized using TEM, EDX, XRD, BET, FTIR methods. 10-CPs possessed BET surface area 113, 139, 105, 98.5 m2 g−1, respectively, showed sorption capacity 55.6, 147.0, 65.8, 24.6 mg g−1 when tested chlorohexidine (CH). Therefore, 2.5-CPs selected as best among nanomaterials employed further investigations. CH on followed pseudo-second-order, liquid–film diffusion controlled onto 2.5-CPs. Langmuir isotherm model was followed, Dubinin–Radushkevich energy 3.0 kJ mole−1, indicating physisorption process. thermodynamic outputs suggested that by favorable. Furthermore, sorbent treating samples contaminated 20 L−1 ciprofloxacin, dextromethorphan, guaifenesin, metronidazole, ibuprofen, chlorzoxazone, chlorpheniramine malate paracetamol, hydro-chlorothiazide. an average removal efficiency 94.1% range 92.1% to 98.3% 2.21 standard deviation value.

Language: Английский

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Correlation between ball milling parameters and graphene quality: A recent review

Journal of Industrial and Engineering Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский

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