Selective removal of organic phosphonates via coupling hyper-cross-linked resin with nanoconfined hydrated oxides

Yan, Xiaobing; Qian, Jieshu; Wang, Shu; Zhang, Xiaolin; Zhang, Yanyang; Pan, Bingcai

doi:10.1016/j.cej.2021.132620

Cited by 17 publications

(2 citation statements)

References 37 publications

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“…In addition, St-DVB-HCPs have exhibited more advantages, such as excellent stability, flexible function, and a simple synthetic process. Most of the St-DVB-HCPs have been widely applied in the field of water purification and ion collection, while only a few resins modified by amines have been used for CO 2 capture. , Although different kinds of amines can increase the CO 2 adsorption capacity and improve the selectivity, the value of adsorption enthalpy is also increased, leading to an energy-intensive regeneration process. Therefore, it is time to replace the CO 2 adsorption method relying on an acid–alkaline effect.…”

Section: Introductionmentioning

confidence: 99%

Hyper-Crosslinked Resins Modified by Ferrocene for CO₂/CO and CO₂/CH₄ Separation

Wang,

Chen,

Yao

et al. 2023

Energy Fuels

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The morphology and regeneration ability of adsorbents are important for gas pressure swing adsorption and separation. Herein, HCP-1 (a hyper-crosslinked polymer) and HCP@MAO(Fe) (a hyper-crosslinked polymer modified by ferrocene) with a spherical morphology are synthesized by a post-crosslinking reaction of chloromethylated styrene-divinylbenzene (Cl-St-DVB) beads for the separation of CO2/CO and CO2/CH4. Both static adsorption and dynamic separation tests verified that HCP@MAO(Fe) has the best gas adsorption and separation performance. The highest adsorption capacity of CO2 reached 1.24 mmol/g. The IAST selectivity of CO2/CO is up to 20.6. Moreover, HCP@MAO(Fe) can be regenerated by simple vacuum operation, contributing to the low value of adsorption enthalpy (24.5 KJ/mol). The adsorption mechanism between CO2 and the resin framework was also studied by experiments and electrostatic potential map analysis. A stronger interaction can be found between CO2 and HCP@MAO(Fe) as a result of the higher Mulliken charge of the cyclopentadiene structure.

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Section: Introductionmentioning

confidence: 99%

Hyper-Crosslinked Resins Modified by Ferrocene for CO₂/CO and CO₂/CH₄ Separation

Wang,

Chen,

Yao

et al. 2023

Energy Fuels

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“…They also discovered that the adsorption efficiency and stability of phosphate by lanthanum hydroxide (La(OH) 3 ) nanoparticles were significantly improved in the nanoconfinement system . Moreover, the loading of metal nanomaterials on ion exchange resins effectively improves the selectivity of phosphorus adsorption and reduces the influence of coexisting competitive ions and organic matter on phosphorus adsorption process. , …”

Section: Introductionmentioning

confidence: 99%

Nanoscale Zero-Valent Iron Confined in Anion Exchange Resins to Enhance Selective Adsorption of Phosphate from Wastewater

et al. 2022

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The removal and recovery of phosphorus from wastewater are crucial for reducing eutrophication and alleviating phosphate rock depletion. In this study, nanoscale zero-valent iron (nZVI) confined in Alfa Aesar Amberlite IRA-402 (Cl) anion exchange resin composite adsorbents was developed by in situ reduction and deposition (denoted as nZVI-402-Cl) to remove phosphate from simulated and real wastewater. Surface and structure characterizations revealed that nZVI particles with a partially oxidized surface were loaded on the surface and inside the anion exchange resin. The phosphate adsorption capacity of nZVI-402-Cl was found to be high over a wide pH range (3.0–11.0), with a maximum adsorption capacity of 56.27 mg P/g at pH 7.2. Despite the presence of interfering sulfate and nitrate anions, nZVI-402-Cl maintained its high phosphate adsorption capacity owing to its excellent selectivity. The confinement of nZVI in anion exchange resins, in particular, could reduce the negative effects of humic acid on phosphate removal. After five regeneration/use cycles, the phosphate removal of nZVI-402-Cl was maintained close to 95%. In column mode tests, the nZVI-402-Cl column process generates ∼1850 bed volume (BV) clean water ([phosphorus] < 0.1 mg/L) from the wastewater treatment plant effluents. In contrast, the value of the IRA-402 column is only ∼900 BV. nZVI-402-Cl has proven to be an efficient and selective adsorbent for practical phosphate removal and recovery in different water environments.

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Biochar reduces colloidal phosphorus in leachate by regulating phoD- and phoC-harboring microbial communities during drying/rewetting cycles

Wang,

Ge,

Fang

et al. 2023

Biochar

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Drying and rewetting (DRW) events cause the release of colloidal phosphorus (Pcoll, 1–1000 nm) in leachate, and biochar is considered an effective inhibitor; however, the microbial mechanism remains elusive. In this study, three successive DRW cycles were performed on the soil columns to assess the effect of biochar addition on Pcoll content and its possible associates, including phosphatase-producing microbial populations (phoD- and phoC-harboring microbial communities) and alkaline/acid phosphatase (ALP/ACP) activities. Results showed that the biochar addition significantly decreased the Pcoll by 15.5–32.1% during three DRW cycles. The structural equation model (SEM) confirmed that biochar addition increased phoD- and phoC-harboring microbial communities and ALP/ACP activities, which reduces the release of Pcoll into leachate. In addition, the manure biochar was more effective than the straw biochar in promoting competition and cooperation in the co-occurrence network (2–5% nodes increased on average), and the key taxa Proteobacteria and Cyanobacteria were identified as the dominant species of potential ALP/ACP activities and Pcoll content. Our findings provide a novel understanding of biochar reducing Pcoll loss from the phosphatase perspective by regulating the phoD- and phoC-harboring communities during DRW events. Graphical abstract

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Selective removal of organic phosphonates via coupling hyper-cross-linked resin with nanoconfined hydrated oxides

Cited by 17 publications

References 37 publications

Hyper-Crosslinked Resins Modified by Ferrocene for CO₂/CO and CO₂/CH₄ Separation

Hyper-Crosslinked Resins Modified by Ferrocene for CO₂/CO and CO₂/CH₄ Separation

Nanoscale Zero-Valent Iron Confined in Anion Exchange Resins to Enhance Selective Adsorption of Phosphate from Wastewater

Biochar reduces colloidal phosphorus in leachate by regulating phoD- and phoC-harboring microbial communities during drying/rewetting cycles

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Selective removal of organic phosphonates via coupling hyper-cross-linked resin with nanoconfined hydrated oxides

Cited by 17 publications

References 37 publications

Hyper-Crosslinked Resins Modified by Ferrocene for CO2/CO and CO2/CH4 Separation

Hyper-Crosslinked Resins Modified by Ferrocene for CO2/CO and CO2/CH4 Separation

Nanoscale Zero-Valent Iron Confined in Anion Exchange Resins to Enhance Selective Adsorption of Phosphate from Wastewater

Biochar reduces colloidal phosphorus in leachate by regulating phoD- and phoC-harboring microbial communities during drying/rewetting cycles

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Product

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Hyper-Crosslinked Resins Modified by Ferrocene for CO₂/CO and CO₂/CH₄ Separation

Hyper-Crosslinked Resins Modified by Ferrocene for CO₂/CO and CO₂/CH₄ Separation