Fabrication of free-standing bio-template mesoporous hybrid film for high and selective phosphate removal

Zheng, Xudong; Pan, Jianming; Zhang, Fusheng; Liu, Enli; Shi, Weidong

doi:10.1016/j.cej.2015.09.033

Cited by 48 publications

(16 citation statements)

References 35 publications

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“…The temperature has also shown some impacts on the phosphate adsorption . As shown in Figure a, the uptake capacity phosphate increases from 60.24 to 66.23 and 71.94 mg g –1 when the temperature increases from 25 to 35 and 45 °C, indicating an endothermic process .…”

Section: Resultsmentioning

confidence: 93%

Lignin-Derived Porous Carbon Loaded with La(OH)₃ Nanorods for Highly Efficient Removal of Phosphate

Liu

Zong

et al. 2018

ACS Sustainable Chem. Eng.

118

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Removing phosphate ions from eutrophic waters is of paramount importance; however, the design of low-cost, high-performance adsorbents for phosphorus removal has remained a huge challenge. Herein, we have demonstrated the fabrication of a low-cost, eco-friendly absorbent, LPC@La(OH)3, by loading lanthanum hydroxide nanorods within lignin-derived porous carbon for superfast and highly efficient phosphorus removal. As-prepared LPC@La(OH)3 exhibits a high adsorption capacity of 60.24 mg P L–1 and a high lanthanum usage efficiency. Our results show an ultrafast removal of up to 99.5% phosphate in 10 min when the initial concentration is 2 mg P L–1. Moreover, LPC@La(OH)3 can efficiently reduce the phosphate concentration to meet the below U.S. Environmental Protection Agency limits (50 μg P L–1) for eutrophication prevention. More importantly, it shows a high phosphate absorption ability over the wide range of pH 3–7, in addition to a high adsorption selectivity toward phosphate and high stability during adsorption process. Both the chemical precipitation and the ligand exchange are mainly responsible for the phosphate removal by LPC@La(OH)3. As-designed lignin-derived, ecofriendly, high-performance LPC@La(OH)3 shows enormous potential for the phosphate removal from both municipal wastewater and industrial effluents.

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Section: Resultsmentioning

confidence: 93%

Lignin-Derived Porous Carbon Loaded with La(OH)₃ Nanorods for Highly Efficient Removal of Phosphate

Liu

Zong

et al. 2018

ACS Sustainable Chem. Eng.

118

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“…The equations of PFOKM and PSOKM are given as follows:

Q_{t} = Q_{e} - Q_{e} e^{- k_{1} t}

Q_{t} = \frac{k_{2} Q_{e}^{2} t}{1 + k_{2} Q_{e} t}

where Q e (mg·g −1 ) and Q t (mg·g −1 ) are the adsorption capacities at time t and at adsorption equilibrium, respectively; k 1 (L·min −1 ) and k 2 (g·mg −1 min −1 ) are the rate constants of PFOKM and PSOKM, respectively. According to the Equations and , the initial adsorption rate h (mg g −1 min −1 ) and half equilibrium time t 1/2 (min) of PSOKM were also calculated

normalh = k_{2} Q_{e}^{2}

t_{1 / 2} = \frac{1}{k_{2} Q_{e}}

…”

Section: Resultsmentioning

confidence: 99%

Calix[4]arenes functionalized dual‐imprinted mesoporous film for the simultaneous selective recovery of lithium and rubidium

Wang

Yang

et al. 2018

Applied Organom Chemis

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Calixarenes have been drawing tremendous interest due to their special structure, superior properties and numerous applications. In this work, a novel adsorbent material, calix[4]arenes functionalized dual‐imprinted mesoporous film (DIMFs) for the simultaneous selective recovery of Li(I) and Rb(I), was prepared via surface ionic imprinting. Compared with ordinary adsorbent materials, the synthesis process of the films used a cheap bio‐template and did not require extra steps but significantly enhances adsorption properties. The morphology and structure of prepared DIMFs were characterized by scanning electron microscopy, transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT‐IR) and nitrogen adsorption–desorption measurements. Adsorption parameters (pH and temperature), adsorption kinetics and adsorption isotherms of the DIMFs were investigated by adsorption experiments. This novel adsorbent has inorganic–organic hybrid frameworks, high specific surface area and uniform pore size. The Langmuir and Freundlich isotherms, pseudo‐first‐order and pseudo‐second‐order kinetics of DIMFs were investigated; suggesting that the adsorption data well fits the Langmuir isotherm model, and the adsorption kinetics can be described by the pseudo‐second‐order kinetic model. In addition, dual‐imprinted mesoporous film exhibited superior selectivity for Li(I) and Rb(I). Cycle test demonstrated an outstanding of reusability, which appreciating their potential for industrial application.

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“…This means that only a portion of the phosphate is synthesized and accumulated in the microbial biomass in the sludge and the phosphate removal is achieved by the disposal of excess sludge containing rich phosphate (de-Bashan and Bashan, 2004;Yang et al, 2010). Therefore, to obtain a greater phosphate removal efficiency, this system should be combined with other methods such as precipitation (de-Bashan and Bashan, 2004), adsorption (Zheng et al, 2016), electrocoagulation (Nguyen et al, 2016), or chemical processes (Ye et al, 2016).…”

Section: Ss and Cod Removal Efficiency And Membrane Performance Under Different Modesmentioning

confidence: 99%

A new hybrid sewage treatment system combining a rolled pipe system and membrane bioreactor to improve the biological nitrogen removal efficiency: A pilot study

Bach

Yoon

et al. 2018

Journal of Cleaner Production

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A new hybrid pilot plant configuration based on a modularized rolled pipe system (RPS) combined with a submerged flat sheet membrane bioreactor (MBR) was investigated to enhance the sewage treatment and membrane performance. The system was operated under actual conditions for more than four months, that is, at a constant flow rate of 30 m³/d and with two internal recycling ratios. The results indicate that the hybrid system produces an excellent effluent quality and considerably mitigated membrane fouling. The average concentrations of SS, COD, TN, NH4 + -N, NO3 − -N, and PO4 3--P remained below 2.81, 8.29, 8.77, 0.15, 8.17, and 1.49 mg/L, respectively. It was estimated that the periodic chemical cleaning of the membrane could be extended to approximately six months. The MBR and RPS can virtually complete nitrification and denitrification, respectively. The highest average denitrification rate of the RPS is 116.95 mg NO3-N/(g MLVSS d), with a hydraulic retention time of 1.05 h. Therefore, the RPS-MBR hybrid system has potential to improve the sewage treatability. The emerging RPS technique can obtain high rates of denitrification coupled with a compact design, ease of installation, and small footprint.

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Fabrication of free-standing bio-template mesoporous hybrid film for high and selective phosphate removal

Cited by 48 publications

References 35 publications

Lignin-Derived Porous Carbon Loaded with La(OH)₃ Nanorods for Highly Efficient Removal of Phosphate

Lignin-Derived Porous Carbon Loaded with La(OH)₃ Nanorods for Highly Efficient Removal of Phosphate

Calix[4]arenes functionalized dual‐imprinted mesoporous film for the simultaneous selective recovery of lithium and rubidium

A new hybrid sewage treatment system combining a rolled pipe system and membrane bioreactor to improve the biological nitrogen removal efficiency: A pilot study

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Fabrication of free-standing bio-template mesoporous hybrid film for high and selective phosphate removal

Cited by 48 publications

References 35 publications

Lignin-Derived Porous Carbon Loaded with La(OH)3 Nanorods for Highly Efficient Removal of Phosphate

Lignin-Derived Porous Carbon Loaded with La(OH)3 Nanorods for Highly Efficient Removal of Phosphate

Calix[4]arenes functionalized dual‐imprinted mesoporous film for the simultaneous selective recovery of lithium and rubidium

A new hybrid sewage treatment system combining a rolled pipe system and membrane bioreactor to improve the biological nitrogen removal efficiency: A pilot study

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Lignin-Derived Porous Carbon Loaded with La(OH)₃ Nanorods for Highly Efficient Removal of Phosphate

Lignin-Derived Porous Carbon Loaded with La(OH)₃ Nanorods for Highly Efficient Removal of Phosphate