Porous activated carbons derived from bamboo pulp black liquor for effective adsorption removal of tetracycline hydrochloride and malachite green from water

Yang, Mengyuan; Cui, Ce; Liu, Li; Dai, Lanling; Bai, Wenhao; Zhai, Jianyu; Jiang, Shan; Wang, Weijie; Ren, Erhui; Cheng, Cheng; Guo, Ronghui

doi:10.2166/wst.2022.205

Cited by 10 publications

(3 citation statements)

References 49 publications

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“…Moreover, the hydrophobicity of both MG and MAC might encourage their hydrophobic interactions in aqueous media. Lastly, the porous structure of MAC might allow MG molecules to diffuse into the pores and be trapped inside, leading to an additional adsorption mechanism known as pore filling [90]. As a summary, the plausible mechanism of MG adsorption on MAC might include electrostatic interactions, π-π stackings, hydrogen bonding, hydrophobic interactions, and pore-filling effects.…”

Section: Adsorption Isotherms Of Mg Onto Mac and Adsorption Mechanismmentioning

confidence: 99%

One-pot fabrication of zero-valent iron-embedded activated carbon from rosemary distillation residues for malachite green removal

Nguyen,

Tran,

Nguyen

et al. 2023

Mater. Res. Express

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The current research proposes an innovative strategy for the facile preparation of magnetic activated carbon (MAC) from rosemary distillation residues (RDR). As a magnetic precursor, FeCl3 was impregnated into RDR before KOH was added as an activating agent. One-pot pyrolysis was then conducted to produce zero-valent iron nanoparticles (14.4 wt%) embedded in the activated carbon matrix. Moreover, KOH activation yielded MAC with a large total pore volume of 0.27 cm3/g, a high specific surface area of 458 m2/g, and hierarchical porosity. With a large porous system and different polar functional groups, MAC was subsequently investigated for malachite green (MG) removal in aqueous media. At pH 6.0, MAC eliminated 93.2% MG (50 mg/L) within 120 min. The adsorption process was consistent with the pseudo-second-order kinetic model and the Langmuir isotherm, with a maximum adsorption capacity of 82.6 mg/g. Additionally, MAC demonstrated effective reusability after five consecutive cycles, when MG removal slightly decreased from 96.4±0.6 to 91.8±2.3%. Notably, MAC with a strong saturation magnetization of 18.4 emu/g could be conveniently recovered from treated media through magnetic fields. Overall, rosemary distillation residue-derived magnetic activated carbon can be a potential adsorbent for malachite green remediation thanks to its cost-effectiveness, eco-friendliness, and magnetic separability.

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Section: Adsorption Isotherms Of Mg Onto Mac and Adsorption Mechanismmentioning

confidence: 99%

One-pot fabrication of zero-valent iron-embedded activated carbon from rosemary distillation residues for malachite green removal

Nguyen,

Tran,

Nguyen

et al. 2023

Mater. Res. Express

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“…PC was prepared according to the previous study [25]. 20 g BPBL and 3 g KOH were dissolved in 10 mL of deionized water.…”

Section: Preparation Of Pcmentioning

confidence: 99%

In situ growth of ZIF-67 onto bamboo pulp black liquor porous carbons as an efficient adsorbent for malachite green removal

Yang

Cui

Dai

et al. 2022

Preprint

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Porous carbon is one of the most commonly used adsorbent and catalyst carrier material, but porous carbon alone has relatively poor adsorption and degradation effect on dyes. In this work, porous carbon (PC) was prepared from black liquor of bamboo pulp and trace amount of zeolitic imidazolate framework-67 (ZIF-67) was loaded onto PC and subsequently calcined under nitrogen atmosphere. Co and N elements are dispersed on the surface of the obtained material (ZIF-67/PC@C). Besides, ZIF-67/PC@C also exhibits weak magnetic property. The ZIF-67/PC@C was further used as adsorbent for malachite green (MG) and as catalyst to activate peroxymonosulfate (PMS) for MG degradation. It is found that ZIF-67/PC@C exhibits good adsorption performances for MG with a maximum adsorption capacity of 1808 mg/g, which is much higher than that of PC (1277 mg/g). In addition, ZIF-67/PC@C shows high activity for effective activation of PMS to produce hydroxyl radical（·OH) sulfate radicals (SO4-·）and singlet oxygen (1O2) for oxidative degradation of MG.

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“…Tetracycline hydrochloride (TC) is a major broad-spectrum antibiotic, cannot be removed through spontaneous degradation because of its high structural stability, and its existence can bring potential risks to plants and human health [5]. Many methods have been used to remove TC from water, including photocatalysis [6], adsorption [7], biodegradation [8], and efficient activation of peroxydisulfate (PS) [9]. In comparison, photocatalytic technology is one of the practical techniques for the degradation of contaminants in water, due to the advantage of its high-efficiency and no secondary pollution [10].…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Synthesis of MoS2/BiVO4 Heterojunction for Photocatalytic Degradation of Tetracycline Hydrochloride

et al. 2023

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Compared with traditional hydrothermal synthesis, microwave-assisted synthesis has the advantages of being faster and more energy efficient. In this work, the MoS2/BiVO4 heterojunction photocatalyst was synthesized by the microwave-assisted hydrothermal method within 30 min. The morphology, structure and chemical composition were characterized by X-ray diffraction (XRD), Raman, X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and high-resolution transmission electron microscopy (HRTEM). The results of characterizations demonstrated that the synthesized MoS2/BiVO4 heterojunction was a spherical structure with dimensions in the nanorange. In addition, the photocatalytic activity of the samples was investigated by degrading tetracycline hydrochloride (TC) under visible light irradiation. Results indicated that the MoS2/BiVO4 heterojunction significantly improved the photocatalytic performance compared with BiVO4 and MoS2, in which the degradation rate of TC (5 mg L−1) by compound where the mass ratio of MoS2/BiVO4 was 5 wt% (MB5) was 93.7% in 90 min, which was 2.36 times of BiVO4. The active species capture experiments indicated that •OH, •O2− and h+ active species play a major role in the degradation of TC. The degradation mechanism and pathway of the photocatalysts were proposed through the analysis of the band structure and element valence state. Therefore, microwave technology provided a quick and efficient way to prepare MoS2/BiVO4 heterojunction photocatalytic efficiently.

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Porous activated carbons derived from bamboo pulp black liquor for effective adsorption removal of tetracycline hydrochloride and malachite green from water

Cited by 10 publications

References 49 publications

One-pot fabrication of zero-valent iron-embedded activated carbon from rosemary distillation residues for malachite green removal

One-pot fabrication of zero-valent iron-embedded activated carbon from rosemary distillation residues for malachite green removal

In situ growth of ZIF-67 onto bamboo pulp black liquor porous carbons as an efficient adsorbent for malachite green removal

Microwave-Assisted Synthesis of MoS2/BiVO4 Heterojunction for Photocatalytic Degradation of Tetracycline Hydrochloride

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