Influence of fulvic acid on Pb(II) removal from water using a post-synthetically modified MIL-100(Fe)

Zhang, Haibo; Wen, Jia; Fang, Ying; Zhang, Siyu; Zeng, Guangming

doi:10.1016/j.jcis.2019.05.016

Cited by 49 publications

(16 citation statements)

References 50 publications

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“…The XRD patterns (Figure 1) of all samples demonstrated that the diffraction peaks were well matched with the results reported previously, expressed that MIL-100(Fe) and MIL-XNa were successfully synthesized [18]. With the adding of Na2CO3 as mineralizing agent, no impurity peaks appeared in the crystal system.…”

Section: Physiochemical Studies Of Adsorbentssupporting

confidence: 85%

“…The peaks observed at 1111 and 943 cm -1 were indication of C-H in-plane bending vibration of benzene. The peaks observed at 762 and 710 cm -1 were expressions of C-H out-of-plane bending vibration of benzene [18]. The C-O stretching band at 1043 cm -1 in MIL-100(Fe) indicated that monodentate coordination happened between Fe 3+ and O atom of the carboxylates [19].…”

Section: Physiochemical Studies Of Adsorbentsmentioning

confidence: 99%

“…MIL-100(Fe) synthesized via hydrothermal route minimizes the utilization of organic solvent efficiently. Zhang et al [18] synthesized MIL-100(Fe) with ethane-diamine to remove Pb(II) ions from water at 60 mg L -1 . Wang et al [19] prepared Al@Fe-MOF to improve the adsorption performance (75 mg g -1 ) for selenite.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, according to the in vivo toxicity assays, MIL-100(Fe) belongs to non-toxic materials [8]. Due to its sufficient porosity, good adsorption capacity and non-toxicity [18,19], MIL-100(Fe) could be a promising green candidate for acetone removal. Nevertheless, the highly corrosive hydrofluoric acid (HF) was used frequently as mineralizing agent to promote the crystal growth of MIL-100(Fe) in the synthetic process [20].…”

Section: Introductionmentioning

confidence: 99%

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Influence of alkalinization over MIL-100(Fe) for enhanced VOCs adsorbents

Xie¹,

Thomas²,

Chang³

et al. 2021

Preprint

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Substantial attempts have been undertaken for the improvement of the air quality over decades; and Volatile Organic Compounds (VOCs) from the chemical and textile industries are truly listed as severe issue to be controlled. To come up with modus operandi for this issue, a novel composite of metal organic frameworks (MOFs) MIL-100(Fe) with salient tuned features of natrite was designed by a green and facile method. Mineralized composite MIL-100(Fe) exhibited enhanced crystallinity than pure MIL-100(Fe) as well showcased a higher surface area of 1300 m2g− 1. Through dynamic acetone pressure swing adsorption setup, MIL-0.05Na revealed an enhanced acetone adsorption of 210 mg g− 1 at room temperature. Gas phase adsorption isotherms confirmed the mono layer adsorption behavior. The kinetics models evaluated that the external mass transfer was the rate limiting step for surface adsorption. The thermodynamic study manifested that the adsorption reaction was spontaneous and exothermic. The proposed mechanism of adsorption was the act of physisorption which enriched the adsorbents reusability. This research work provides a futuristic vista to design mineralized Fe-MOFs composites for an energy saving adsorbents for VOCs removal.

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Section: Physiochemical Studies Of Adsorbentssupporting

confidence: 85%

Section: Physiochemical Studies Of Adsorbentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of alkalinization over MIL-100(Fe) for enhanced VOCs adsorbents

Xie¹,

Thomas²,

Chang³

et al. 2021

Preprint

View full text Add to dashboard Cite

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“…

\frac{C_{e}}{Q_{e}} = \frac{C_{e}}{Q_{m}} + \frac{1}{Q_{normalm} K}

\log Q_{normale} = \log k_{f} + \frac{1}{n} \log C_{normale}

Here, C e (mg L −1 ) is the concentration of Cd(II) at adsorption equilibrium; Q e and Q m (mg·g −1 ) are the adsorption capacity of Cd(II) at adsorption equilibrium and the maximum adsorption capacity, respectively; K (L·mg −1 ) is the equilibrium constant related to the adsorption energy; and k f and n are constants. The results showed that the Langmuir isotherm correlation of Cd adsorption onto RM/PAA was better than that of the Freundlich isotherm, and the correlation was better than that of the unmodified RM, indicating that adsorption was dominated by homogeneous monolayer adsorption . The experimental results showed that the adsorption of cadmium onto RM was only in accordance with the Freundlich isotherm at low concentrations.…”

Section: Resultsmentioning

confidence: 87%

Novel red mud/polyacrylic composites synthesized from red mud and its performance on cadmium removal from aqueous solution

Liu

Xie

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: Red mud (RM) is a solid waste generated by the aluminum industry and has demonstrated promising physical adsorption properties for cadmium (Cd) due to its relatively large surface area. To improve the chemisorption performance of RM for Cd(II) ions, a new method utilizing in situ graft polymerization in a reversed-phase suspension system is proposed, and red mud/polyacrylic acid (RM/PAA) composites were synthesized for the first time. RESULTS:The RM/PAA composites were used to adsorb Cd(II) ions from aqueous solutions. Batch equilibrium measurements of RM/PAA were carried out to optimize the parameters. The characteristics were analyzed by scanning electron microscopy, the Brunauer-Emmett-Teller method, X-ray diffraction, Fourier transform infrared and X-ray photon spectroscopy. The maximum adsorption capacity of RM/PAA reached 96.15 mg g −1 , which was much higher than that of the RM (21.70). The Cd(II) adsorption rate increased with increasing solution temperature and followed pseudo-second-order kinetics. The experimental data fitted well with the Langmuir isotherm model, indicating that the adsorption followed the monolayer adsorption model. The thermodynamic parameter values suggested that endothermic and spontaneous adsorption occurred. The surface of RM/PAA possesses abundant oxygen-containing functional groups, and because the specific surface area of the RM/PAA decreased and the amount of adsorption increased compared with those of RM, the surface groups contribute more to Cd(II) retention. Physical adsorption, ion exchange and chelation were possibly the predominant adsorption mechanisms. CONCLUSION: Thus, the RM/PAA composites produced from RM are considered effective and low-cost adsorbents for Cd(II) removal from aqueous solutions. This study is of great significance for waste utilization and environmental protection.

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CO₂ capture performance of a CaO sorbent modified with fulvic acid for the calcium looping cycle

Jiang

Wang

et al. 2023

Greenhouse Gases

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Capturing CO2 from fossil fuel combustion is of importance for mitigation of climate warming. Among the CO2 capture technologies, the calcium‐based sorbent method is promising. However, the most prominent problem of this method at present is that the activity of the sorbent decreases as the number of cycle reactions increases. It seriously affects the industrial application of the calcium‐based sorbent method in carbon capture technology. Fulvic acid (FA) is a biologically active and soluble component of humic acid. Compared with other humic acids, it contains more oxygen and heterocyclic rings. Also, the rings are connected by bridge bonds. Therefore, the ability of FA to chelate cations and its adsorption capacity is stronger than the other humic acids. Therefore, in this work, we first proposed using FA to modify CaO to improve CO2 capture from flue gas. The effects of calcination temperature, carbonation temperature, reaction time and the amount of doped FA on the carbonation conversion rate (CCR) of CaO modified with FA (FA/CaO) were studied in the calcining/carbonizing room at atmospheric pressure. The experiment showed that the first CCR (X1) of FA/CaO reached 0.872 under the optimal conditions, which was 31% higher than X1 of original CaO. The 20th CCR (X20) was still as high as 0.47, which was three times than X20 of original CaO. In addition, the sorbent was analyzed and characterized by XRD, SEM, BET and LPSA. Due to the doped FA, the microstructure of CaO became fluffy and open, which improved the specific surface area and pore size of CaO. It indicated that the addition of FA was beneficial to the diffusion and absorption of CO2 and delayed the appearance of sintering, which significantly enhanced the CO2 capture performance of CaO. Using FA to modify CaO to capture CO2 provides an idea for efficient carbon capture, and has practical application potential. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Influence of fulvic acid on Pb(II) removal from water using a post-synthetically modified MIL-100(Fe)

Cited by 49 publications

References 50 publications

Influence of alkalinization over MIL-100(Fe) for enhanced VOCs adsorbents

Influence of alkalinization over MIL-100(Fe) for enhanced VOCs adsorbents

Novel red mud/polyacrylic composites synthesized from red mud and its performance on cadmium removal from aqueous solution

CO₂ capture performance of a CaO sorbent modified with fulvic acid for the calcium looping cycle

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Influence of fulvic acid on Pb(II) removal from water using a post-synthetically modified MIL-100(Fe)

Cited by 49 publications

References 50 publications

Influence of alkalinization over MIL-100(Fe) for enhanced VOCs adsorbents

Influence of alkalinization over MIL-100(Fe) for enhanced VOCs adsorbents

Novel red mud/polyacrylic composites synthesized from red mud and its performance on cadmium removal from aqueous solution

CO2 capture performance of a CaO sorbent modified with fulvic acid for the calcium looping cycle

Contact Info

Product

Resources

About

CO₂ capture performance of a CaO sorbent modified with fulvic acid for the calcium looping cycle