The magnetic porous biochar prepared by K2FeO4-promoted oxidative pyrolysis of bagasse for adsorption of antibiotics in the aqueous solution

Zou, Chenglong; Wu, Qingqing; Gao, Zhimin; Xu, Zhiwei; Nie, Fahui

doi:10.1007/s13399-022-03652-1

Cited by 4 publications

(4 citation statements)

References 80 publications

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“…In one study, tetracyclines exhibited high adsorption efficiency onto Fe-modified biochar derived from rice waste, attributed to the synergy of pore filling, electrostatic attraction, π-π interactions, and the complexation reactions of surface functional groups (Zhang et al, 2023). The particular reactions taking place during the adsorption process can differ based on various factors like the properties of the iron-modified biochar, environmental circumstances, and the nature of the pollutants being adsorbed (Zou et al, 2022).…”

Section: Figure 11mentioning

confidence: 99%

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Green technology: synthesis of iron-modified biochar derived from pine cones to remove azithromycin and ciprofloxacin from water

Aziz,

Anbreen,

Iftikhar

et al. 2024

Front. Environ. Sci.

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The rise of antibiotic pollutants in water threatens ecosystems and human health. Iron-modified biochar (BC) exhibits adsorption properties and offers a promising approach for effective environmental remediation. The current study explored the potential of iron-loaded biochar synthesized from pine cones for antibiotic removal from water. In this study, pine cones, a sustainable and renewable source, were used to produce iron-modified biochar and employed to remove azithromycin, ciprofloxacin, and their mixture from aqueous solutions. Biochar was synthesized through pyrolysis and modified by the addition of iron salts. The analysis of iron-modified biochar by Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) suggested a crystalline structure rich in minerals and functional groups (O–H, C=O, and C≡C) and loaded with iron, having plate-like roughness and distorted morphology along with sharp edges and corners. Antibiotic removal was evaluated by changing physical parameters, including biochar dose, pH, and temperature. The maximum removal percentages of azithromycin, ciprofloxacin, and their mixture were obtained as 87.8%, 91.3%, and 84%, respectively, at low pH, a low Fe-modified biochar dose, and higher temperature. Application of kinetic models suggested that the adsorption of antibiotics on iron-modified biochar is more inclined toward pseudo-second-order (R2 > 0.98) kinetics, indicating a chemisorption nature of the adsorption process. The findings highlight the potential of iron-modified biochar for removing antibiotics from aqueous solutions.

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Section: Figure 11mentioning

confidence: 99%

“…The competition for binding sites is lessened at low Fe-modified biochar concentrations due to the increased size of the available sorption surface (Ahmad et al, 2014;L. Liang et al, 2021), allowing a higher proportion of antibiotics to be adsorbed (Zou et al, 2022).…”

mentioning

confidence: 99%

Green technology: synthesis of iron-modified biochar derived from pine cones to remove azithromycin and ciprofloxacin from water

Aziz,

Anbreen,

Iftikhar

et al. 2024

Front. Environ. Sci.

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“…F thermore, the values of ΔG° decreased when the temperature increased from 288 to 318 This confirmed that the temperature was conducive to the spontaneous adsorption of M on the BAC [49]. The value of ΔH° was positive, indicating that the adsorption proc was endothermic and temperature enhanced the adsorption property of the BAC [49]. T adsorption process of MB endothermically improved the disorder of the adsorption s tem.…”

Section: Adsorption Properties Of Optimized Bacmentioning

confidence: 64%

“…The value of ∆G • was negative, indicating that the adsorption of MB on BAC was a spontaneous process [42]. Furthermore, the values of ∆G • decreased when the temperature increased from 288 to 318 K. This confirmed that the temperature was conducive to the spontaneous adsorption of MB on the BAC [49]. The value of ∆H • was positive, indicating that the adsorption process was endothermic and temperature enhanced the adsorption property of the BAC [49].…”

Section: Adsorption Properties Of Optimized Bacmentioning

confidence: 79%

Activated Carbon with Ultrahigh Specific Surface Derived from Bamboo Shoot Shell through K2FeO4 Oxidative Pyrolysis for Adsorption of Methylene Blue

Gao

et al. 2023

Molecules

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To effectively remove methylene blue (MB) from dye wastewater, a novel activated carbon (BAC) was manufactured through co-pyrolysis of bamboo shoot shell and K2FeO4. The activation process was optimized to a temperature of 750 °C and an activation time of 90 min based on its excellent adsorption capacity of 560.94 mg/g with a yield of 10.03%. The physicochemical and adsorption properties of BACs were investigated. The BAC had an ultrahigh specific surface area of 2327.7 cm2/g and abundant active functional groups. The adsorption mechanisms included chemisorption and physisorption. The Freundlich model could be used to describe the isothermal adsorption of MB. The kinetics confirmed that the adsorption of MB belonged to the pseudo-second-order model. Intra-particle diffusion was the main rate-limiting step. The thermodynamic study showed that the adsorption process was endothermic and temperature was beneficial for the improvement of adsorption property. Furthermore, the removal rate of MB was 63.5% after three cycles. The BAC will have great potential for commercial development for purifying dye wastewater.

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Fe3O4-magnetized Rhizopus oryza and Penicillium citrinum biomass for elimination of tetracycline antibiotic

Azamateslamtalab,

Madani,

Ramavandi

et al. 2023

Biomass Conv. Bioref.

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The magnetic porous biochar prepared by K2FeO4-promoted oxidative pyrolysis of bagasse for adsorption of antibiotics in the aqueous solution

Cited by 4 publications

References 80 publications

Green technology: synthesis of iron-modified biochar derived from pine cones to remove azithromycin and ciprofloxacin from water

Green technology: synthesis of iron-modified biochar derived from pine cones to remove azithromycin and ciprofloxacin from water

Activated Carbon with Ultrahigh Specific Surface Derived from Bamboo Shoot Shell through K2FeO4 Oxidative Pyrolysis for Adsorption of Methylene Blue

Fe3O4-magnetized Rhizopus oryza and Penicillium citrinum biomass for elimination of tetracycline antibiotic

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