Removal of tetracycline by aerobic granular sludge from marine aquaculture wastewater: A molecular dynamics investigation

Hu, Peng; Shao, Jingyi; Qian, Guangsheng; Adeleye, Adeyemi S.; Hao, Tianwei

doi:10.1016/j.biortech.2022.127286

Cited by 30 publications

(7 citation statements)

References 48 publications

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“…Total Hole Volume (cm 3 The N 2 adsorption and desorption curve reflects the variation of adsorption amount with relative pressure (P/P 0 ) at a certain temperature. As shown in Figure 2, the N 2 adsorption-desorption of K6-PAC belonged to the type II isotherm, whereas F6-PAC was classified as a type IV isotherm with H3 hysteresis loops, which is associated with the abundance of mesopores inside the material [31].…”

Section: Samplesmentioning

confidence: 99%

“…Tetracyclines (TC) are extensively employed in veterinary, clinical, and pharmaceutical practices due to their exceptional antibacterial properties [1]. However, the release of tetracyclines into the environment, such as surface water, groundwater, and sediments [2], without proper degradation can contribute to the proliferation of tetracycline resistance genes and the emergence of tetracycline-resistant bacteria, leading to severe ecological damage [3]. The aqueous environment serves as a significant habitat for tetracycline, highlighting the importance of efficient wastewater treatment processes for the removal of tetracycline to safeguard the ecosystem [4].…”

Section: Introductionmentioning

confidence: 99%

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Hydrothermal Pretreatment of KOH for the Preparation of PAC and Its Adsorption on TC

Wang

et al. 2023

Materials

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The environment has been heavily contaminated with tetracycline (TC) due to its excessive use; however, activated carbon possessing well-developed pores can effectively adsorb TC. This study synthesized pinecone-derived activated carbon (PAC) with high specific surface area (1744.659 cm2/g, 1688.427 cm2/g) and high adsorption properties (840.62 mg/g, 827.33 mg/g) via hydrothermal pretreatment methods utilizing pinecones as precursors. The results showed that PAC treated with 6% KOH solution had excellent adsorption properties. It is found that the adsorption process accords with the PSO model, and a large amount of C=C in PAC provides the carrier for π-πEDA interaction. The results of characterization and the isothermal model show that TC plays a key role in the adsorption process of PAC. It is concluded that the adsorption process of TC on PAC prepared by hydrothermal pretreatment is mainly pore filling and π-πEDA interaction, which makes it a promising adsorbent for TC adsorption.

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Section: Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrothermal Pretreatment of KOH for the Preparation of PAC and Its Adsorption on TC

Wang

et al. 2023

Materials

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“…1 Therefore, developing effective methods to remove TC from the ecosystem, particularly from water, is necessary. The methods currently used to remove TC from water are adsorption, 2 photocatalytic degradation, 3 biological treatment, 4 and combinations of these methods. 5 The adsorption method is commonly employed for its advantages of low cost, simple adsorption process, and high efficiency, while metal-oxide 5 adsorption of TC has become a topic of focus due to its high adsorption performance, good regeneration performance, and easy separation.…”

Section: Introductionmentioning

confidence: 99%

Preparation of hydrochar by one‐step hydrothermal carbonization with potassium ferrate‐assisted activation for the removal of tetracycline in water

Zhou

Bao

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUND: Woody biomass has a low hydrothermal-carbonization (HTC) degree and the hydrolysis process of some of its components is similar to that of saccharides. To improve the adsorption performance of wood-chips hydrothermal char (hydrochar) for tetracycline in water, molasses and potassium ferrate (K 2 FeO 4 ) were added to its HTC process; K 2 FeO 4 catalyzed the carbonization of raw materials and the surface of wood chips and saccharides in molasses, along with the iron ions mutually polymerized, added more reactive-oxygen functional groups to the hydrochar surface. The effects of K 2 FeO 4 and molasses on the morphology, pore structure, surface oxygen-containing functional groups, and tetracycline-adsorption properties of hydrothermal carbon were investigated. RESULTS:The strong oxidizing properties of K 2 FeO 4 promoted the hydrolysis of raw material. The modified hydrochar formed more oxygen-containing functional groups and produced Fe O bonds with an increased specific surface area. For the adsorption of tetracycline in water, the pseudo-second-order kinetic model and Freundlich isotherm were more consistent with the hydrochar-adsorption process. The adsorption mechanism favored a combination of physical and chemical adsorption, with chemisorption being predominant. The maximum tetracycline-adsorption capacity of HTC-0.15Fe was 119.7 mg g −1 , which is significantly higher than that of unmodified hydrochar HTC-C (56.4 mg g −1 ). Furthermore, molasses addition effectively improved the hydrochar structure, forming carbon-coated iron-core particles on its surface, which increased adsorption performance.CONCLUSION: K 2 FeO 4 -catalyzed hydrochar produced from wood chips and sugarcane molasses is an effective adsorbent for tetracycline removal from water. This work provides innovative insights into the recycling and effective use of wood chips and molasses for environmental remediation and waste treatment.

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“…Tetracycline (TC) is a broad-spectrum antibiotic that is widely used in the treatment of diseases and as a feed additive to promote the growth of animals ( Hu et al, 2022 ). However, relevant studies have shown that 70%–90% of TC was discharged directly or indirectly into the ecosystem in the form of active pharmaceutical ingredients, especially into water, due to its structural stability and resistance to degradation ( Liu et al, 2021 ; He et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Efficient removal of tetracycline from aqueous solution by K2CO3 activated penicillin fermentation residue biochar

et al. 2022

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In this study, biochar was prepared using penicillin fermentation residue (PR) as the raw material by different methods. The adsorption behavior and adsorption mechanism of biochar on tetracycline (TC) in an aqueous environment were investigated. The results showed that K2CO3 as an activator could effectively make porous structures, and that biochar with mesoporous or microporous could be prepared in a controlled manner with two kinds of different activation methods, the dry mixing method and the impregnation method. The dry mixing method could create more mesopores, while the impregnation method could prepare more micropores. Microporous biochar (IKBCH) with a high specific surface area could be prepared by the impregnation method combined with HCl soaking, which has an excellent adsorption effect on tetracycline. When the concentration of tetracycline was 200 mg/L, the removal rate of 99.91% could be achieved with the dosage of microporous biochar at 1 g/L. The adsorption process was in accordance with the Langmuir model and the pseudo-second-order model, respectively. The maximum adsorption capacity of IKBCH was 268.55 mg/g (25°C). The adsorption mechanisms were pore filling, π-π interaction, electrostatic adsorption, and hydrogen bond. Its stable and wide applicability adsorption process does not cause ecological pollution in the aqueous environment, and it is a promising biochar adsorbent.

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Removal of tetracycline by aerobic granular sludge from marine aquaculture wastewater: A molecular dynamics investigation

Cited by 30 publications

References 48 publications

Hydrothermal Pretreatment of KOH for the Preparation of PAC and Its Adsorption on TC

Hydrothermal Pretreatment of KOH for the Preparation of PAC and Its Adsorption on TC

Preparation of hydrochar by one‐step hydrothermal carbonization with potassium ferrate‐assisted activation for the removal of tetracycline in water

Efficient removal of tetracycline from aqueous solution by K2CO3 activated penicillin fermentation residue biochar

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