Steam-treated CeO2-ZrO2/activated carbon fibers for the efficient removal of Pb(II) from aqueous solutions

Yu, Gang; Han, Kuo; Wang, Jing; Cheng, Xiaoqing; Ma, Hongmei; Wu, Huayong; Yang, Zhigang; Zhang, Guanglei

doi:10.1016/j.colsurfa.2019.01.013

Cited by 17 publications

(2 citation statements)

References 34 publications

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“…However, although pristine ACFs have an excellent performance for removing residual chlorine and COD from drinking water, their adsorption to trace heavy metals cannot meet NSF/ANSI 53–2020 and world health organization (WHO) standards. Various reagents such as phosphoric acid, ammonia, nitric acid, potassium hydroxide, and ammonium persulfate have been used to modify ACFs. ,, Meanwhile, ACFs have also been used as a substrate to prepare composite materials such as ACNFs/MnO 2 and CeO 2 –ZrO 2 /ACF in recent years, , but all of them are used to adsorb heavy metals with high initial concentrations and usually have long adsorption time and complex preparation process. Few studies on removing low-concentration heavy metals from drinking water by using modified ACFs have been reported.…”

Section: Introductionmentioning

confidence: 99%

Functionalized Activated Carbon Fibers by Hydrogen Peroxide and Polydopamine for Efficient Trace Lead Removal from Drinking Water

et al. 2021

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To achieve efficient and selective trace heavy metals removal from drinking water, a low-cost purification material polydopamine/activated carbon fibers (PDA/H-ACF) was successfully prepared by polymerizing dopamine on the surface of activated carbon fibers pretreated with hydrogen peroxide. The morphology, phase, surface functional groups, specific surface, and pore size distribution of the as-prepared sample were analyzed using FESEM, XPS, BET and pore size distribution test (PST), and FTIR, and orthogonal experiments were used to investigate the influences of concentration of H 2 O 2 , pretreatment time, and reflux temperature on trace lead removal. The results showed that the sample pretreated under optimized conditions could produce different pore structures, and the content of functional group −COOH obviously increased. After further modification by polydopamine, the contents of −NH−, −NH 2 , and −OH functional groups on the surface obviously enhanced, which were beneficial to increase adsorption site and promote trace lead removal. The effluent lead concentration decreased from initial 150 to 3.18 ppb within 5 min, meeting the requirement of NSF International Standard/American National Standard for Drinking Water Treatment Units (NSF/ANSI 53−2020) (5 ppb). The isothermal adsorption process and adsorption kinetics could be well-fitted by the Langmuir isotherm and pseudo-second-order kinetics model, indicating that the adsorption process of trace lead by PDA/H-ACF belonged to monolayer and chemical adsorption. Moreover, the as-prepared PDA/H-ACF also showed superior trace lead adsorption performance in the presence of high concentration competitive metal ions, in a wide pH range and in tap water, and therefore had good application prospect in the field of drinking water purification.

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Section: Introductionmentioning

confidence: 99%

Functionalized Activated Carbon Fibers by Hydrogen Peroxide and Polydopamine for Efficient Trace Lead Removal from Drinking Water

et al. 2021

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“…The strongest peak at 284.6 eV belongs to carbon fiber and the weak peaks 286.1 eV, 291.1 eV are assigned to PVDF [36][37][38]. The O 1s high-resolution spectrum (Fig.4c) shows two major peaks at 529.6 eV and 532.5 eV, corresponding to CeO2 and O atoms in carbon fiber [39,40].…”

Section: Morphology and Surface Compositionmentioning

confidence: 99%

Compression molding processed superhydrophobic CB/CeO2/PVDF/CF nanocomposites with highly robustness, reusability and multifunction

Lyu

Peng

et al. 2020

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Bioinspired superhydrophobic treatment imparts unique features to surfaces such as self-cleaning, water-proofing, anti-icing, anti-fouling, etc. Here we introduce a simple approach to manufacture carbon fiber based superhydrophobic nanocomposite materials. The developed materials had high mechanochemical durability and electrical conductivity which should find promising applications in many engineering fields. The nanocomposites were manufactured via molding process and comprised of carbon fiber (CF), poly(vinylidene fluoride) (PVDF), carbon black (CB) and cerium dioxide (CeO2) nanoparticles, which is typically applied to fabricate carbon fiber reinforced plastics (CFRP) for structural use. The CFRP nanocomposites show a

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Preparation of cast chitosan/polyether sulfone/Fe3O4 modified with mercapto and amine groups as a novel nanohybrid adsorbent for heavy metal removal from single and binary aqueous systems

et al. 2021

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Steam-treated CeO2-ZrO2/activated carbon fibers for the efficient removal of Pb(II) from aqueous solutions

Cited by 17 publications

References 34 publications

Functionalized Activated Carbon Fibers by Hydrogen Peroxide and Polydopamine for Efficient Trace Lead Removal from Drinking Water

Functionalized Activated Carbon Fibers by Hydrogen Peroxide and Polydopamine for Efficient Trace Lead Removal from Drinking Water

Compression molding processed superhydrophobic CB/CeO2/PVDF/CF nanocomposites with highly robustness, reusability and multifunction

Preparation of cast chitosan/polyether sulfone/Fe3O4 modified with mercapto and amine groups as a novel nanohybrid adsorbent for heavy metal removal from single and binary aqueous systems

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