High capacity adsorption of oxytetracycline by lignin-based carbon with mesoporous structure: Adsorption behavior and mechanism

Zhou, Hanjun; Jiao, Guangjia; Li, Xianzhen; Gao, Chunli; Zhang, Yiru; Hashan, Dana; Liu, Jing; She, Diao

doi:10.1016/j.ijbiomac.2023.123689

Cited by 26 publications

(6 citation statements)

References 48 publications

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“…As can be seen in Figure d, under the condition of constant temperature, the adsorption capacity of PVB to SDS increased rapidly by increasing the initial concentration of SDS, which was attributed to the large concentration gradient between SDS and PVB surface in the solution at the initial stage, so the mass transfer impetus at this time was also large. The subsequent slow increase of adsorption capacity was due to the large increase of adsorbate SDS occupying the limited adsorption site of adsorbent PVB . Finally, the adsorption reached equilibrium, which indicated that the adsorbent had reached its saturation point.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

“…Moreover, the positive value of Δ S 0 indicated that the disorder of SDS molecules at the solid–liquid interface increased during the adsorption. This was because SDS molecules were free to move after adsorption …”

Section: Conclusion and Discussionmentioning

confidence: 99%

“…The subsequent slow increase of adsorption capacity was due to the large increase of adsorbate SDS occupying the limited adsorption site of adsorbent PVB. 26 Finally, the adsorption reached equilibrium, which indicated that the adsorbent had reached its saturation point.…”

Section: Effect Of Particle Sizementioning

confidence: 99%

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Adsorption of Sodium Dodecyl Sulfonate from Aqueous Solution by Polyvinyl Butyral: Kinetics and Thermodynamics

Sun

Zeng

2023

Ind. Eng. Chem. Res.

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During the synthesis of polyvinyl butyral (PVB), sodium dodecyl sulfonate (SDS) is generally added in appropriate amounts, which prevents PVB from agglomeration but also causes PVB to turn yellow. The removal of SDS and its final residue in PVB are closely related to the adsorption performance of SDS on PVB. In this study, PVB with a high acetal degree (81.96 mol %) was synthesized by polyvinyl alcohol and butyraldehyde and was characterized by 1H NMR, Fourier transform infrared spectroscopy, scanning electron microscopyenergy-dispersive X-ray spectroscopy, and other methods. The adsorption properties of SDS on PVB were investigated under different initial pHs, PVB doses, PVB particle sizes, contact times, initial SDS concentrations, and temperatures. The adsorption kinetic data were analyzed using pseudo-first-order, pseudo-second-order, Elovich, and intraparticle diffusion models. The results showed that the pseudo-second-order model fitted the adsorption data well, and the intraparticle diffusion was not the only control mechanism for PVB adsorption. The equilibrium data were analyzed with Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich models. The results showed that the adsorption data conformed to the Langmuir model, and the maximum adsorption capacity of PVB for SDS was 40.5168 mg/g at 290.15 K. Moreover, the Dubinin–Radushkevich model illustrated that the adsorption process was chemisorption at low SDS concentrations and physical adsorption otherwise. The thermodynamic parameters showed that the adsorption of SDS on PVB was spontaneous and exothermic. In conclusion, the research results provide some basis for the PVB purification plant equipment.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Section: Conclusion and Discussionmentioning

confidence: 99%

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Adsorption of Sodium Dodecyl Sulfonate from Aqueous Solution by Polyvinyl Butyral: Kinetics and Thermodynamics

Sun

Zeng

2023

Ind. Eng. Chem. Res.

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“…The adsorption kinetics of antibiotics (TC, LEV, MTL) were investigated at different time intervals using the pseudo‐first‐order, pseudo‐second‐order, and Elovich models. [ 42 ] The general adsorption capacities of biochars are presented in Figure S2 and the kinetic parameters are listed in Table 3. Figure S2 shows the adsorption kinetics of TBI K for TC and LEV at different time points.…”

Section: Adsorption Performancementioning

confidence: 99%

Functionalized typha biochar for antibiotic removal via low‐carbon integrated method: Performance and mechanism analyses

Liu,

Wen,

et al. 2024

CLEAN Soil Air Water

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Antibiotic residues in water represent an urgent environmental challenge. To efficiently remove these residues, a low‐carbon integrated biochar synthesis method was proposed, and an optimized typha biochar (TBIK) was prepared. Compared with the biochar prepared by a conventional two‐step carbonization and activation method (TBTK), the TBIK preparation process reduced energy consumption by 43849.58 J and cut carbon dioxide emissions by 32.80%. TBIK exhibited a large surface area of 1252.40 m2/g and rapidly achieved an equilibrium removal efficiency of 99.95% within 20 min for simulated antibiotics wastewater. Furthermore, TBIK possessed more number of functional groups than TBTK, especially O‐H and C‐S groups. The adsorption stability and tolerance of TBIK in solutions with different ionic strengths and coexisting anions were examined. Characterization techniques such as scanning electron microscopy (SEM), Fourier transform infrared (FT‐IR), and X‐ray photoelectron spectroscopy (XPS) as well as Brunauer, Emmett and Teller (BET) analyses were employed to elucidate the morphology and adsorption mechanism of the adsorbent. The microporous structure and abundance of functional groups are key to the excellent adsorption capabilities of TBIK. Thus, this integrated method for biochar production, optimized for treating antibiotic wastewater, holds significant potential for future applications.

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“…The vast majority of biochar preparations are presently made through chemical activation, and carbon materials have increased active sites and pore structure abundance after chemical activation, which improves adsorption performance. Potassium hydroxide (KOH), sodium hydroxide (NaOH), phosphoric acid (H 3 PO 4 ), zinc chloride (ZnCl 2 ), and potassium carbonate (K 2 CO 3 ) are common activators. KOH in industrial activators is restricted since it is extremely corrosive to machinery and releases dangerous levels of decomposition gas.…”

Section: Introductionmentioning

confidence: 99%

Bi-Activation Engineering of Lignin-Derived Porous Carbon Adsorbent for Highly Efficient Water Purification

Bai,

Wei,

Qiu

et al. 2023

Ind. Eng. Chem. Res.

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Organic contaminants have become a major concern in current environmental policies. Biochar is often used to absorb pollutants due to its large surface area, wide availability, and cost-effectiveness. Lignin, a byproduct of the pulp and paper industry, is an ideal precursor for biochar due to its abundance, sustainability, and high carbon content. Bi-activation engineering of alkali lignin during the carbonized process by combining potassium carbonate and melamine to produce porous carbon with more micro–mesoporous structure was proposed. Melamine reacts with the carbon matrix during the activation process, creating new alkaline compounds and releasing more gas, resulting in the formation of more micropores and mesopores. Adjusting the ratio of potassium carbonate to melamine can optimize the micro–mesoporous structure of porous carbon materials. In this regard, a nitrogen-doped three-dimensional porous carbon (ALNC-2-1) with a specific surface area of up to 3522 m2 g–1 was synthesized for the adsorption of methylene blue and tetracycline hydrochloride in wastewater; the largest adsorption capacities were 1364 and 1682 mg g–1, respectively. The adsorption process was found to follow the pseudo-second-order kinetic model and was attributed to electrostatic interaction, pore filling, hydrogen bonding, and π–π interaction. Moreover, ALNC demonstrated high removal rates for organic pollutants and excellent regeneration performance, thus making it a promising material for practical wastewater treatment.

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High capacity adsorption of oxytetracycline by lignin-based carbon with mesoporous structure: Adsorption behavior and mechanism

Cited by 26 publications

References 48 publications

Adsorption of Sodium Dodecyl Sulfonate from Aqueous Solution by Polyvinyl Butyral: Kinetics and Thermodynamics

Adsorption of Sodium Dodecyl Sulfonate from Aqueous Solution by Polyvinyl Butyral: Kinetics and Thermodynamics

Functionalized typha biochar for antibiotic removal via low‐carbon integrated method: Performance and mechanism analyses

Bi-Activation Engineering of Lignin-Derived Porous Carbon Adsorbent for Highly Efficient Water Purification

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