Synthesis of Iron Oxide/Activated Hydrochar Composite from Residual Brewery Biomass for Remediation of Water Contaminated with Chlorophenol DOI Creative Commons
Matías Kopp,

Pedro Anabalón,

Sebastián Rocha

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 14, 2024

Abstract The study aimed to develop an iron oxide/activated hydrochar composite (FeOHC) remove 2-chlorophenol from water through adsorption or oxidation processes. Two preparation methods were used: (1) incipient wetness impregnation of biomass via hydrothermal carbonization, and (2) coprecipitation oxide on the surface (FeOHC-C). Both materials activated at 400°C under nitrogen. Characterization revealed mesoporous structures with areas 44–66 m² g⁻¹ magnetite presence. Adsorption experiments showed a capacity 7.71 5.14 mg within 24 hours, Elovich model best describing kinetics. Equilibrium ranged 24.63 18.70 g⁻¹, FeOHC showing highest capacity, fitting Sips isotherm model. Thermodynamic analysis suggested physical process. Fenton reactions demonstrated faster removal pH 3.0, while reusability tests confirmed could act as both adsorbents self-regenerative catalysts for remediation.

Language: Английский

Removal of tetracycline from aqueous solution by magnetic biochar modified with different iron valence and K2C2O4: a comparative study and mechanism DOI

Guodong Hong,

Zhen‐Qiang Yu,

Dexin Kong

et al.

Journal of Analytical and Applied Pyrolysis, Journal Year: 2025, Volume and Issue: 187, P. 107005 - 107005

Published: Feb. 5, 2025

Language: Английский

Citations

1
Green Production of 5-Hydroxymethylfurfural (Hmf) in Biphasic Continuous Microreactor Using Terpenoid-Based Solvents DOI
Matías Kopp,

Pedro Anabalón,

Marcos Larriba

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0
Novel millimeter-sized honeycomb-like Fe/Fe3C@HBC from waste cotton textiles towards rapid degradation of ofloxacin via activation of H2O2 DOI

Yongjia Lei,

Wenjie Li,

Kaixuan Chen

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 378, P. 124778 - 124778

Published: March 3, 2025

Language: Английский

Citations

0
Biochar-derived photocatalysts for pharmaceutical waste removal, a sustainable approach to water purification DOI Creative Commons
Misha Zahid, Zia Ul Haq Khan, Jingyu Sun

et al.

Applied Surface Science Advances, Journal Year: 2025, Volume and Issue: 26, P. 100721 - 100721

Published: March 1, 2025

Language: Английский

Citations

0
Synthesis of iron oxide/activated hydrochar composite from residual brewery biomass for remediation of water contaminated with chlorophenol DOI Creative Commons
Matías Kopp,

Pedro Anabalón,

Sebastián Rocha

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 28, 2025

This study presents the development of iron oxide/activated hydrochar composites from brewer's spent grain (BSG) to remove 2-chlorophenol (2-CP) water via adsorption and Fenton oxidation. Two synthesis methods were employed: (1) incipient wetness impregnation hydrothermal carbonization (FeOHC) (2) chemical coprecipitation oxide onto surface (FeOHC-C). Characterization revealed mesoporous structures with areas ranging 44 66 m² g⁻¹ magnetite (Fe₃O₄) as predominant phase. Adsorption studies demonstrated equilibrium capacities 24.63 mg for FeOHC 18.70 FeOHC-C, kinetics best described by Elovich model behavior fitting Sips isotherm, suggesting a heterogeneous monolayer process. Thermodynamic analysis confirmed that was spontaneous exothermic, primarily driven physical interactions, including hydrogen bonding, π-π electrostatic attraction. oxidation experiments 2-CP degradation most efficient under acidic neutral conditions (pH 3.0-6.0), diminishing drastically at alkaline conditions. The fact good results obtained pH demonstrates its practical applicability. Reusability tests long-term stability materials, FeOHC-C maintaining sustained catalytic performance over multiple cycles. These findings highlight dual functionality adsorbents self-regenerating catalysts, offering promising scalable solution remediation chlorinated organic pollutants in water.

Language: Английский

Citations

0
Valorization of Residual Brewery Biomass for the Production of Counter Electrodes for Dye-Sensitized Solar Cells DOI Open Access
Camila Silva, A.M.R. Ramírez, Boris Pavez

et al.

Catalysts, Journal Year: 2025, Volume and Issue: 15(5), P. 433 - 433

Published: April 29, 2025

In this work, a biochar catalyst was developed from residual brewery spent grain (BSG) biomass and iron oxide to be applied in the counter electrode (CE) dye-sensitized solar cells (DSSCs). The composite obtained using two-stage methodology based on microwave-assisted hydrothermal carbonization pyrolysis, evaluating influence of pyrolysis temperature (700, 800 900 °C) properties performance material. As result, composites with high carbon content were magnetite state attached surface. Furthermore, physicochemical characteristics showed similarities those reduced graphene (rGO), which attributed incorporation temperature. Electrochemical analysis that pyrolyzed at °C presented better catalytic activity lower charge transfer resistance. Its application CE DSSC current density 10.44 mA/cm2 an efficiency 3.05%, values close conventional Pt DSSCs (Pt = 4.43%). This study validates use CE, making it alternative contributes recovery residues generation sustainable technologies.

Language: Английский

Citations

0
Insights into the relationship between Nitrilotri(methylphosphonic acid) (NTMP) adsorption and physicochemical properties of iron oxides DOI
Jun Wan, Rui Gao,

Xiaonan Feng

et al.

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Language: Английский

Citations

1
Magnetic Composite Carbon from Microcrystalline Cellulose to Tackle Paracetamol Contamination: Kinetics, Mass Transfer, Equilibrium, and Thermodynamic Studies DOI Open Access
Pascal S. Thue,

Alfred G. N. Wamba,

Beatris L. Mello

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(24), P. 3538 - 3538

Published: Dec. 19, 2024

This study reported a one-spot preparation of magnetic composite carbon (MCC@Fe) from microcrystalline cellulose (MC). The pure was impregnated in iron (III) chloride solution and carbonized at 650 °C. MCC@Fe adsorbent underwent various characterization techniques. XRD identified nanostructured Fe3O4 particles with an average crystallite size 34.3 nm embedded the core subunits material. FESEM images indicated rough irregular surface, some cavities along its incorporating nanoparticles, while EDS analysis confirmed presence elements like Fe, C, O. Notably, combining thermal chemical treatments produces more pores high specific surface area (500.0 m2 g−1) compared to MC (1.5 m2/g). VSM properties (0.76 emu/g), Hydrophobic Index (HI) showed that hydrophobic (HI 1.395). adsorption studies consisted kinetic, mass transfer, equilibrium, thermodynamics studies. Kinetic paracetamol on proved be rapid, time necessary for covering 95% (t0.95) lower than 27 min following fractal-like pseudo-first-order model (FPFO). Liu’s isotherm most appropriate understanding equilibrium. Remarkably, maximum sorption capacity (Qmax) 34.78 mg g−1 45 ΔH° value (+27.00 kJ/mol) negative ΔG° values were consistent physisorption mechanism favorable process. Furthermore, transfer is governed by intraparticle diffusion model, being rate-limiting step when considering Biot number greater 100. research displayed single-route production inexpensive nano adsorbents capable efficiently eliminating aqueous environments.

Language: Английский

Citations

1
Synthesis of Iron Oxide/Activated Hydrochar Composite from Residual Brewery Biomass for Remediation of Water Contaminated with Chlorophenol DOI Creative Commons
Matías Kopp,

Pedro Anabalón,

Sebastián Rocha

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 14, 2024

Abstract The study aimed to develop an iron oxide/activated hydrochar composite (FeOHC) remove 2-chlorophenol from water through adsorption or oxidation processes. Two preparation methods were used: (1) incipient wetness impregnation of biomass via hydrothermal carbonization, and (2) coprecipitation oxide on the surface (FeOHC-C). Both materials activated at 400°C under nitrogen. Characterization revealed mesoporous structures with areas 44–66 m² g⁻¹ magnetite presence. Adsorption experiments showed a capacity 7.71 5.14 mg within 24 hours, Elovich model best describing kinetics. Equilibrium ranged 24.63 18.70 g⁻¹, FeOHC showing highest capacity, fitting Sips isotherm model. Thermodynamic analysis suggested physical process. Fenton reactions demonstrated faster removal pH 3.0, while reusability tests confirmed could act as both adsorbents self-regenerative catalysts for remediation.

Language: Английский

Citations

0