Effective removal of humic acid by mesoporous Zr-MOF adjusted through SDBS

Zhu, Zengwei; Jiang, Yuankang; Wang, Zhenggang; He, Mingpeng; Zhou, Pan

doi:10.1007/s11356-022-20985-6

Cited by 8 publications

(5 citation statements)

References 41 publications

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“…1 MOF materials are composed of metal ion clusters and organic ligands to generate abundant diversities for various applications. Due to their porous structure, large surface area, abundant active sites, receptivity to functional modifications, and good stability, MOF materials have been applied in gas adsorption and separation, 2 gas sensing, 3 catalysis, 4 contamination remediation, 5,6 thermoelectric materials, 7 energy, 8 water treatment, 9 bioimaging, 10 drug delivery, 11 pigment extraction 12,13 and so on. In particular, MOF materials could be used for the delivery of pesticides and fertilizers in plant growth.…”

Section: Introductionmentioning

confidence: 99%

Phytotoxicity of metal–organic framework MOF-74(Co) nanoparticles to pea seedlings

Hu,

Huang,

Chen

et al. 2024

Environ. Sci.: Processes Impacts

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Section: Introductionmentioning

confidence: 99%

Phytotoxicity of metal–organic framework MOF-74(Co) nanoparticles to pea seedlings

Hu,

Huang,

Chen

et al. 2024

Environ. Sci.: Processes Impacts

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“…Jiang et al found it has a very high maximum adsorption capacity for HA, following the Langmuir model [12]. Lin and Chang's research showed that surfactants could enhance NH2-UiO-66, a variant of UiO-66(Zr), resulting in a maximum adsorption capacity of 108.93 mg/g and 95.0% removal effectiveness [13]. HA adsorption on UiO-66(Zr) involves hydrogen bonding, π-π interactions, and electrostatic interactions, contributing to its high affinity for HA.…”

Section: Introductionmentioning

confidence: 99%

“…UiO-66(Zr) improves coagulation processes. Jiang et al reported that Zr-MOFs with surface modifications enhance interactions with HA, aiding flocculation and coagulation [12,13]. Lin and Chang suggested NH2-UiO-66's mesoporous structure offers more nucleation sites for floc formation [12].…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of Humic Acid from Water Using Metal-Organic Frameworks (MOFs): An Effective Removal Strategy

Mala

2024

J. Eng. Res. Rep.

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The escalating presence of humic acid (HA) in aquatic systems poses significant ecological and potable water treatment challenges, altering the color, taste, and odor of water and fueling algal blooms that deplete oxygen levels to the detriment of aquatic life. Traditional techniques like coagulation-flocculation, membrane filtration, oxidation fall short in efficiency due to its small fraction of HA, Humic acids (HAs) can interact with various organic and inorganic substances, affecting their characteristics and behavior in water. These interactions can influence the efficiency of water treatment processes like adsorption and coagulation. Specifically, HAs may compete with other contaminants for treatment sites or alter the chemical conditions of the treatment processes, impacting their effectiveness. This thesis confronts the pervasive issue of HA contamination by leveraging the advanced properties of metal-organic frameworks (MOFs). In this work, four representative MOFs are synthesized and well characterized. Then, their capability to enhance coagulation processes in water for HA and HA-kaolin treatment are detailed evaluated. The findings from this research extend beyond academic curiosity, offering actionable insights for water treatment facilities and environmental management agencies. The synthesis of MOFs which are UiO-66(Zr), MIL-100(Fe), ZIF-8, and Al-fum. Each MOFs have been applied to remove HA by adsorption under different condition, effect of contact time, effect of initial pH, effect of adsorbent dosage. After adsorption experiment, MOF samples prepared to dry and went through characterization. Removal of HA by MOF adsorption showed UiO-66(Zr) and MIL-100(Fe) examined shortest reaching equilibrium state with 10-15 min, however, ZIF-8 and Al-fum gradually reached equilibrium state after 60 min. Among various pH conditions, UiO-66(Zr) and MIL-100(Fe) showed the highest adsorption capacity under acidic conditions, while ZIF-8 excelled at neutral pH, and Al-fum exhibited the highest adsorption capacity under both acidic and basic conditions. ZIF-8 has the highest adsorption capacity among the MOFs with capacity of 754 mg/g. MOF after adsorption samples went through characterizations and their remained characteristics indicating the adsorption not affected the structure of the MOFs.

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“…In this study, an industrial EOL poly(vinylidene fluoride) (PVDF) MF membrane from a full-scale membrane bioreactor (MBR) was selected for studying the feasibility of the SRIPbased upcycling strategy, by using sodium dodecylbenzene sulfonate (SDBS), a low-priced surfactant, 37 as the aqueous additive. Surface morphologies, elemental compositions, zeta potentials, and separation performance of the upcycled thinfilm composite (TFC) NF membranes were systematically investigated.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Wettability Regulation Enables One-Step Upcycling of the End-of-Life Polymeric Microfiltration Membrane

et al. 2022

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Polymeric membranes, which are typically synthesized from fossil-based polymers, will reach their end of life (EOL) and then be replaced, due to the inevitable accumulation of membrane fouling even though the periodic cleaning is applied. The conventional disposal methods of the EOL membranes are landfilling and incineration, which will lead to additional carbon emission and fossil resource depletion. Herein, we proposed a surfactant-regulated interfacial polymerization strategy, by adding sodium dodecylbenzene sulfonate (SDBS) in the piperazine (PIP) aqueous solution, for the one-step upcycling of the EOL polymeric microfiltration membrane to obtain a thin-film composite polyamide (PA) nanofiltration (NF) membrane. Revealed by the quartz crystal microbalance with dissipation analysis and molecular dynamics simulation, the presence of SDBS reduced interfacial tension (IFT) and regulated interfacial wettability, thereby facilitating adequate and uniform uptake of PIP monomers. The resulting upcycled NF membrane with 4 critical micelle concentration (CMC) of SDBS addition exhibited a favorable pure water permeance (20.1 ± 0.6 L m–2 h–1 bar–1) and a satisfactory Na2SO4 rejection of 98.6 ± 0.4% owing to the formation of a continuous PA layer with high cross-linking degree (89.3 ± 0.5%). The Na2SO4 permeability of the 4 CMC upcycled NF membrane was more than 1 magnitude lower than that of the upcycled NF membrane without SDBS addition. This study provides a facile, rapid, and cost-effective method for the one-step upcycling of EOL polymeric membranes, which thus improves the sustainability of membrane technology.

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Effective removal of humic acid by mesoporous Zr-MOF adjusted through SDBS

Cited by 8 publications

References 41 publications

Phytotoxicity of metal–organic framework MOF-74(Co) nanoparticles to pea seedlings

Phytotoxicity of metal–organic framework MOF-74(Co) nanoparticles to pea seedlings

Adsorption of Humic Acid from Water Using Metal-Organic Frameworks (MOFs): An Effective Removal Strategy

Interfacial Wettability Regulation Enables One-Step Upcycling of the End-of-Life Polymeric Microfiltration Membrane

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