Removal of tetracycline from aqueous solution by MCM-41-zeolite A loaded nano zero valent iron: Synthesis, characteristic, adsorption performance and mechanism

Guo, Yun; Huang, Wenli; Chen, Bin; Zhao, Ying; Liu, Dongfang; Sun, Yu; Gong, Bin

doi:10.1016/j.jhazmat.2017.06.006

Cited by 181 publications

(47 citation statements)

References 49 publications

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“…In addition, TC removal rates for repeated three times were 61.7%, 58.4% and 53.2% respectively. The decrease (2.3-5.2% in every cycle) of removal rate might have been owing to the loss of irreversible occupation of partial-adsorption sites 54 . Nevertheless, the adsorption amount of ceramsites still remained at a high value (2.13 mg/g, C 0 = 80 mg/L) after three consecutive cycles, suggesting the high reusability capability and stability of Ben/Rm/Ps-op for TC removal.…”

Section: − = −mentioning

confidence: 99%

Adsorptive removal of tetracycline by sustainable ceramsite substrate from bentonite/red mud/pine sawdust

Wang

Gong

et al. 2020

Sci Rep

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In this study, a novel, sustainable and efficient ceramsite substrate of constructed wetlands (CWs) were prepared for tetracycline (TC) removal by employing bentonite (Ben) and red mud (Rm) as the main materials and pine sawdust (Ps) as the additive. The optimal parameters for Ben/Rm/ ps ceramsite preparation were obtained via orthogonal and one-factor experimental designs, and the optimal parameters were presented as follows: mass ratio of Ben: Rm: Ps = 4:1:0.9, preheating temperature = 240 °C, preheating time = 20 min, calcining temperature = 1150 °C, and calcining time = 14 min. The properties of Ben/Rm/Ps-op ceramsite (obtained at the optimal condition) were first analyzed, including XRD and SEM, and demonstrated a microporous structure with some crystal strength components. Neutral condition and higher temperature were indicated conducive to improve the TC removal efficiency, while coexisting ions (Na + or ca 2+ ) showed adverse effect for TC adsorption by Ben/Rm/Ps-op. In addition, adsorption kinetics and isotherm could be well described by the secondorder kinetics and linear isothermal model, respectively, which suggested chemisorption and multilayer adsorption thickness increased infinitely. The theoretical maximum TC adsorption capacity of Ben/Rm/ Ps-op at 20 °C reached up to 2.5602 mg/g. In addition, Ben/Rm/Ps-op could effectively remove TC as the CWs substrate under a dynamic flow condition. Further, Ben/Rm/Ps-op exhibited high reusability capability and stability for TC removal, and the adsorption amount still remained for 2.13 mg/g (C 0 = 80 mg/L) after three consecutive cycles.As the most widely used spectrum antibiotics, tetracycline (TC) can effectively inhibit the activities of chlamydia, mycoplasma, protozoan parasites, rickettsiae, gram-negative bacteria and gram-positive bacteria 1 . Therefore, it is widely and frequently applied in medical and health, poultry breeding and other industries for disease treatment 2 . Nevertheless, animals usually fail to fully metabolize TC, and most of ingested TC are discharged into the environment, which would pose potent pollution danger to environment consequently 3-6 . Long-term exposure to TC in the environment has caused serious concern about toxicity and bacterial resistance, which leads to ecological damage and threatens human health through bioaccumulation in the food chain 7 . It has been proved that TC can interact with phospholipids and be adsorbed by biological cell membranes, which can also lead to complications of human allergic reactions. Despite of short half-life of TC, the current sewage treatment system can not completely remove TC 4 , which has caused reports of TC residues in surface water, groundwater and soil around the world, and even in many foods 7 . Therefore, it is of great significance to develop effective methods to remove TC in water environment.To date, there are a lot of techniques such as filtration, ion exchange, adsorption, electrochemical treatment, membrane separation, catalytic degradation, etc. that have been developed ...

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Section: − = −mentioning

confidence: 99%

Adsorptive removal of tetracycline by sustainable ceramsite substrate from bentonite/red mud/pine sawdust

Wang

Gong

et al. 2020

Sci Rep

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“…Among these methods, the removal of tetracycline with adsorbents has always been the most common method, due to its low operation cost, simple and practical operation, environmental friendliness, lack of secondary pollution and relatively high removal efficiency [20,21]. Recently, it was reported that many porous adsorbents have been successfully used to remove antibiotics from water and milk, including activated carbons [22], graphene oxide [23], nano-scaled zero valent iron [24] and multiwall carbon nanotubes [25]. However, many of these adsorbents generally show removal inefficiency and instability for antibiotic adsorption which limits their practical application [26].…”

Section: Introductionmentioning

confidence: 99%

Removal of Tetracycline in Sewage and Dairy Products with High-Stable MOF

Zhao

et al. 2020

Molecules

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Serious environmental and human health problems caused by the abuse of antibiotics have attracted worldwide concern. Recently, metal–organic frameworks (MOFs) with high porosity have drawn wide attention for their effects in the adsorption and removal of pollutants from complex matrices. Herein, a high-stable metal organic framework (MOF), i.e., ((ZnCl2)3(L)2·DMF)n, where L=1,3,5-tris((pyridin-4-ylthio)methyl)benzene), MOF 1, was applied to adsorb and remove tetracycline from sewage and dairy products. The results showed that MOF 1 exhibited a strong performance in the adsorption of tetracycline. The effects of initial pH values, adsorbent dose, contact time and ionic strength of the adsorption performance of MOF 1 were investigated. The adsorption kinetics best fit the pseudo-second order model, and the adsorption isotherms matched the Langmuir adsorption model well. It was indicated that both chemical adsorption and physical adsorption play an important role in the adsorption process, and the adsorption of tetracycline was homogeneous and occurred on a monolayer on the surface of MOF 1. Additionally, the stability of MOF 1 and the details of the adsorption mechanism were also investigated. Thus, this study provides a new candidate for the application of MOFs-based adsorbents in the removal of antibiotics from sewage and dairy products.

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“…However, the lower utilization rate causes that more than 70% of tetracycline would be excreted in urine and feces of humans and animals and released into the environment [15]. As far as we know, various adsorption materials have been developed to remove TC from aqueous solution, such as clay minerals [19][20][21], zeolites composites [22,23], graphene oxide (GO) [24], multi-walled carbon nanotubes (MWC-NTs) [25], biochar [26][27][28][29][30], covalent-organic frameworks (COFs) [31], metal-organic frameworks (MOFs) [32][33][34][35][36] and their composites [37][38][39][40][41]. Among these adsorbent materials, MOFs, composed of organic linkers and metallic clusters, are a new class of porous materials.…”

Section: Introductionmentioning

confidence: 99%

Efficient removal of tetracycline hydrochloride from aqueous solution by mesoporous cage MOF-818

Zhang

Ding

et al. 2020

SN Appl. Sci.

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MOF-818, a mesoporous cage metal-organic framework, was investigated for the removal of tetracycline hydrochloride (TC) from aqueous environment. The product was characterized by XRD, BET, FESEM, FT-IR, XPS and TGA. The influence of different parameters such as solution pH, contact time, temperature, adsorption dosage, initial TC concentration on the adsorption capacity was investigated. The as-prepared MOF-818 showed rapid removal of TC and with maximum saturated adsorption capacity calculated to be 442.5 mg g −1 at pH 3.32, 323 K. The adsorption isotherms were fitted by Langmuir, and Freundlich models. The kinetic data was analyzed by pseudo-first-order, pseudo-second-order, and intraparticle diffusion models. The TC adsorption process followed pseudo-second-order kinetics and best fitted the Langmuir adsorption model. The thermodynamic data showed that the adsorption was a spontaneous and endothermic reaction. A mechanism for TC adsorption was proposed and the chemisorption and π-π interaction was believed to direct the interaction between MOF-818 and TC molecules.

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Removal of tetracycline from aqueous solution by MCM-41-zeolite A loaded nano zero valent iron: Synthesis, characteristic, adsorption performance and mechanism

Cited by 181 publications

References 49 publications

Adsorptive removal of tetracycline by sustainable ceramsite substrate from bentonite/red mud/pine sawdust

Adsorptive removal of tetracycline by sustainable ceramsite substrate from bentonite/red mud/pine sawdust

Removal of Tetracycline in Sewage and Dairy Products with High-Stable MOF

Efficient removal of tetracycline hydrochloride from aqueous solution by mesoporous cage MOF-818

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