Rapid and efficient adsorption of tetracycline from aqueous solution in a wide pH range by using iron and aminoacetic acid sequentially modified hierarchical porous biochar

Li, Xiumin; Xu, Jinlan; Shi, Jingxin; Luo, Xianxin

doi:10.1016/j.biortech.2022.126672

Cited by 38 publications

(10 citation statements)

References 43 publications

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“…Physical adsorption was dominated by pore filling effect and electrostatic interaction, based on the appropriate pore size distribution and surface charge of photocatalysts, which contributed to the adsorption (Dai et al 2020;Jang et al 2018). The hydrogen bonding force and surface complexation were deemed to be the critical mechanisms for TC adsorption due to the presence of oxygen-containing functional groups and metal oxides, which were discovered to enhance TC adsorption in this study (Dai et al 2020;Li et al 2022b). The surface complexation interaction between metal chromium ions and oxygen-containing functional groups of catalysts was also considered as the main force for Cr(VI) adsorption (Liu et al 2022;Xiao et al 2019;Zhu et al 2021).…”

Section: Removal Mechanism Of Photocatalyst For Tc and Cr(vi)mentioning

confidence: 75%

Synergy effect between tetracycline and Cr(VI) on combined pollution systems driving biochar-templated Fe3O4@SiO2/TiO2/g-C3N4 composites for enhanced removal of pollutants

Yang

Dai

Zhao

et al. 2023

Biochar

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Biochar-coupled Fe3O4@SiO2/TiO2/g-C3N4 composites were successfully constructed through simple sol–gel and calcination methods. The composites efficiently removed high-concentration toxic tetracycline (TC) by means of ·OH and ·$${\rm O}_2^{-}$$ O 2 - , whose removal rate exhibited 91.88% during 3 h, and the degradation rate constant reached up to 0.0068 min−1. The excellent performance can be attributed to the high specific surface area, enhanced visible light response, the introduction of magnetic nanoparticles and biochars expediting charge transfer, Z-scheme heterojunction enhancing the spatial separation of photo-generate carriers and, importantly extraordinary adsorption capacity of 147.96 mg g−1. Moreover, the composites showed the most excellent efficiency under the calcination temperature of 450 ℃, and exhibited good stability with tolerance to a wide range of pH and anions. Interestingly, a synergistic photocatalytic effect was discovered in the TC/Cr(VI) combined pollution systems, resulting in significantly improved removal of Cr(VI). Besides, the photocatalytic mechanism and degradation path of tetracycline were also elucidated. All these findings suggested the as-synthesized catalyst was an excellent photocatalyst for removal of TC/Cr(VI)-contaminated water. Graphical Abstract

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Section: Removal Mechanism Of Photocatalyst For Tc and Cr(vi)mentioning

confidence: 75%

Synergy effect between tetracycline and Cr(VI) on combined pollution systems driving biochar-templated Fe3O4@SiO2/TiO2/g-C3N4 composites for enhanced removal of pollutants

Yang

Dai

Zhao

et al. 2023

Biochar

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“…With the increase of temperature, the value of Δ G θ decreases, indicating that the increase of temperature is beneficial to the adsorption process. In addition, the Δ G θ values of BC300 and BMC700 are less than −20 kJ·mol –1 , indicating that there is chemical adsorption in the adsorption process, while the Δ H θ values of the remaining BC(BMC) are greater than 20 kJ·mol –1 , indicating that the adsorption process becomes physical and chemical adsorption . The values of Δ S θ are all positive, indicating that the QR molecules are adsorbed from the disordered state to the BC(MBC) surface to form a regular state during the adsorption of QR by BC(BMC), resulting in a decrease in the degree of freedom, while the analysis process of water on the BC(MBC) surface is from ordered to disordered.…”

Section: Resultsmentioning

confidence: 99%

“…The pH of the solution mainly affects the charge state of the biochar surface by changing the ionization degree of the adsorbate, so that the electrostatic interaction between the biochar and the solute changes, and the adsorption effect also changes. , It can be seen from Figure a that the overall adsorption effect increases with the increase in pH value. Especially when the pH value is less than 7, the adsorption effect increases rapidly.…”

Section: Resultsmentioning

confidence: 99%

Adsorption Characteristics of Ball Milling-Modified Chinese Medicine Residue Biochar Toward Quercetin

Li,

Xie,

Chen

et al. 2024

ACS Omega

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Using traditional Chinese medicine residues as raw materials, different biochars (BC) were prepared through oxygen-limited pyrolysis at 300 °C, 500 °C, and 700 °C, and BC was ball-milled to produce ball-milled biochar (BMC). Using these adsorbents to adsorb the allelopathic autotoxic substance quercetin. The physical and chemical properties of various biochars derived from traditional Chinese medicine residues were characterized using the Brunauer−Emmett−Teller-N2 surface areas (BET), scanning electron microscopy (SEM), Fourier transform IR spectroscopy (FTIR), X-ray diffraction (XRD), and Raman spectroscopy (Raman). The study investigated the effects of the initial pH value, different humic acid concentrations, and multiple adsorption− desorption experiments on the removal of quercetin from the solution. The article discusses the adsorption mechanism of quercetin in solution by biochar from a traditional Chinese medicine residue, based on the results of adsorption kinetics and adsorption isotherm fitting. The findings indicate that increasing the pyrolysis temperature reduces the oxygen-containing functional groups of BC, enhances the aromaticity, and stabilizes the carbon structure. The pore structure of BMC becomes more complex after ball milling, which increases the number of oxygen-containing functional groups on the surface. Among the samples tested, BMC700 exhibits the best adsorption performance, with an adsorption capacity of 293.3 mg•g −1 at 318 K. The adsorption process of quercetin by BMC700 follows the pseudo-second-order kinetic model and the Freundlich adsorption isotherm model. The process is primarily a form of multimolecular layer adsorption. Its mechanism involves the pore-filling effect, hydrogen-bonding interaction, electrostatic interaction, and π−π coexistence, as well as the yoke effect. Additionally, they are highly recyclable and show promise in addressing continuous cropping issues.

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“…Furthermore, research demonstrated that the interaction between π–π electron donor and acceptor was crucial for the adsorption of aromatic pollutants by carbon materials. The graphite structure on carbon materials can form an interaction with an aromatic ring on adsorbent molecules, which acts as an electron acceptor. , …”

Section: Resultsmentioning

confidence: 99%

“…The on carbon materials can form an interaction with an aromatic ring on adsorbent molecules, which acts as an electron acceptor. 41,42 As shown in Figure 4c, the FTIR spectra of carbon materials contained noticeable peaks at 3436 and 1615 cm −1 , which were related to the stretching vibration of −OH and aromatic C−H, respectively, similar to the features of biochar. 43 The abundance of oxygen-containing functional groups in the produced carbon material was greatly reduced after calcination at 800 °C compared to AL; the addition of K 2 CO 3 may also eliminate oxygen-containing organics such as C�O, −OH, and aliphatic structures.…”

mentioning

confidence: 91%

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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Rapid and efficient adsorption of tetracycline from aqueous solution in a wide pH range by using iron and aminoacetic acid sequentially modified hierarchical porous biochar

Cited by 38 publications

References 43 publications

Synergy effect between tetracycline and Cr(VI) on combined pollution systems driving biochar-templated Fe3O4@SiO2/TiO2/g-C3N4 composites for enhanced removal of pollutants

Synergy effect between tetracycline and Cr(VI) on combined pollution systems driving biochar-templated Fe3O4@SiO2/TiO2/g-C3N4 composites for enhanced removal of pollutants

Adsorption Characteristics of Ball Milling-Modified Chinese Medicine Residue Biochar Toward Quercetin

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

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