Highly efficient adsorption and recycle of phosphate from wastewater using flower-like layered double oxides and their potential as synergistic flame retardants

Zhang, Xingzhi; Shen, Junyan; Ma, Yanan; Liu, Lin; Meng, Ranju; Yao, Juming

doi:10.1016/j.jcis.2019.11.076

Cited by 50 publications

(6 citation statements)

References 57 publications

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“…This may be due to the collapse of the layered structure of hydrotalcite like adsorbents during the calcination process, with OH -and CO3 2escaping in the form of H2O and CO2, respectively. This is consistent with the literature results [8] and also consistent with the XRD and FTIR results in this paper. Therefore, the calcined MgAl-LDOs have a higher specific surface area compared to MgAl-LDHs, which helps to provide more adsorption active sites and improve adsorption performance.…”

Section: N2 Adsorption-desorptionsupporting

confidence: 94%

Research on the synchronous control performance of COD and heavy metals in accident oil pool of substation by MgAl-LDOs

Hou,

Cui,

et al. 2024

Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023)

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The MgAl-LDOs was synthesized in this work to adsorb the COD and heavy metals in accident oil pool of substation synchronously. The MgAl-LDOs was synthesized by SEM, XRD, FTIR, BET, indicating its abundant surface -OH and rich channel structure, benefiting for its excellent dual-effect adsorption properties for COD and heavy metals removal. By using MgAl-LDOs, the COD removal efficiency of oily wastewater from simulated accident oil pool can achieved to be 81.78%, while the removal efficiency of Fe (10ppm) and Cr(10ppm) can reach more than 98%. Besides, the adsorption capacity of Fe and Cr by MgAl-LDOs can reach 158.49 and 149.94mg/g, respectively, whose adsorption isotherm conforms to the Freundlich model and the adsorption process is multi-molecular layer adsorption. Such a synchronous control method for COD and heavy metals can provide a useful strategy for multiple pollutants control in accident oil pool of substation.

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Section: N2 Adsorption-desorptionsupporting

confidence: 94%

Research on the synchronous control performance of COD and heavy metals in accident oil pool of substation by MgAl-LDOs

Hou,

Cui,

et al. 2024

Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023)

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“…Phosphate is obtained through rock mining, which is a non-renewable source and is depleting. 7 Therefore, in order to tackle the dual issues of phosphate-algal growth and a depleting phosphate supplies, the adsorption and recovery of phosphate from used adsorbents is essential.…”

Section: Introductionmentioning

confidence: 99%

Layered zinc hydroxide as an adsorbent for phosphate removal and recovery from wastewater

et al. 2021

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“…The absorption peak at 1438 cm −1 related to the asymmetric stretching of the CO 3 2− was weakened [33] in L-A E and L-A. The lowfrequency peaks corresponding to the M-O and O-M-O (M = Mg, Al) vibration within 400-800 cm −1 (centered at 603 cm −1 or 660 cm −1 [34]) were observed in the L-A E and L-A samples. It was worth noting that in the L-A E FT-IR spectrum, two new peaks were detected at 1378 and 1553 cm −1 , which could be assigned to the N-H and C-N stretching vibration from the residual egg white protein [35].…”

Section: Basic Characterization Of the Materialsmentioning

confidence: 95%

Egg White-Mediated Fabrication of Mg/Al-LDH-Hard Biochar Composite for Phosphate Adsorption

et al. 2022

Molecules

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Phosphorus is one of the main causes of water eutrophication. Hard biochar is considered a promising phosphate adsorbent, but its application is limited by its textural properties and low adsorption capacity. Here, an adhesion approach in a mixed suspension containing egg white is proposed for preparing the hybrid material of Mg/Al-layered double hydroxide (LDH) and almond shell biochar (ASB), named L-AE or L-A (with or without egg white). Several techniques, including XRD, SEM/EDS, FTIR and N2 adsorption/desorption, were used to characterize the structure and adsorption behavior of the modified adsorbents. The filament-like material contained nitrogen elements at a noticed level, indicating that egg white was the crosslinker that mediated the formation of the L-AE hybrid material. The L-AE had a higher phosphate adsorption rate with a higher equilibrium adsorption capacity than the L-A. The saturation phosphate adsorption capacity of L-AE was nearly three times higher than that of L-A. Furthermore, the number of surface groups and the density of the positively charged surface sites follow the ASB < L-A < L-AE order, which is consistent with their phosphate adsorption performance. The study may offer an efficient approach to improving hard biochar’s adsorption performance in wastewater treatment.

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Highly efficient adsorption and recycle of phosphate from wastewater using flower-like layered double oxides and their potential as synergistic flame retardants

Cited by 50 publications

References 57 publications

Research on the synchronous control performance of COD and heavy metals in accident oil pool of substation by MgAl-LDOs

Research on the synchronous control performance of COD and heavy metals in accident oil pool of substation by MgAl-LDOs

Layered zinc hydroxide as an adsorbent for phosphate removal and recovery from wastewater

Egg White-Mediated Fabrication of Mg/Al-LDH-Hard Biochar Composite for Phosphate Adsorption

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