Adsorption of low-concentration VOCs on various adsorbents: Correlating partition coefficient with surface energy of adsorbent

Liu, Huijuan; Xu, Bowen; Wei, Keyan; Yu, Ying; Long, Chao

doi:10.1016/j.scitotenv.2020.139376

Cited by 32 publications

(7 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The C 1s spectra of these HCPs could be deconvoluted into four subpeaks appearing at BEs of 284.6, 285.4, 286.6, and 287.5 eV assigned to sp 2 C, sp 3 C (from the benzene ring and the alkyl chain), C−O, and C� O (belonged to the oxygen-containing groups in the polymeric skeleton) respectively. 48 Notably, the mixing of sp 2 C and sp 3 C indicated the amorphous nature and low graphitization of these samples. 24 Compared with Ben-SHCP (4.8%), the C−O content of BA−DHCP (6.1%) and BDM-DHCP (7.2%) increased successively due to the addition of hydroxyl groups in corresponding monomers.…”

Section: Textural Characterizationmentioning

confidence: 98%

“…Volatile organic compounds (VOCs) are air pollutants that originate from industrial emissions, having strong irritating odor and toxicity that can endanger the natural environment and human health even at low concentrations of <200 ppm. − Therefore, the harmless treatment of VOCs has attracted extensive attention of the scientific community. Among many approaches reported, the adsorption technique has shown great application potential in low-concentration VOC removal due to its simplicity, high efficiency, cost-effectiveness, and no generation of harmful byproducts .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Swellable Array Strategy Based on Designed Flexible Double Hypercross-linked Polymers for Synergistic Adsorption of Toluene and Formaldehyde

Wang

Luan

Muhammad

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

High-capacity adsorption and removal of complex volatile organic compounds (VOCs) from real-world environments is a tough challenge for researchers. Herein, a swellable array adsorption strategy was proposed to realize the synergistic adsorption of toluene and formaldehyde on the flexible double hypercross-linked polymers (FD-HCPs). FD-HCPs exhibited multiple adsorption sites awarded by a hydrophobic benzene ring/pyrrole ring and a hydrophilic hydroxyl structural unit. The array benzene ring, hydroxyl, and pyrrole N sites in FD-HCPs effectively captured toluene and formaldehyde molecules through π–π conjugation and electrostatic interaction and weakened their mutual competitive adsorption. Interestingly, the strong binding force of toluene molecules to the skeleton deformed the pore structure of FD-HCPs and generated new adsorption microenvironments for the other adsorbate. This behavior significantly improved the adsorption capacity of FD-HCPs for toluene and formaldehyde by 20% under multiple VOCs. Moreover, the pyrrole group in FD-HCPs greatly hindered H2O molecule diffusion in the pore, thus efficiently weakening the competitive adsorption of H2O toward VOCs. These fascinating properties enabled FD-HCPs to achieve synergistic adsorption for multicomponent VOC vapor under a highly humid environment and overcame single-species VOC adsorption properties on state-of-the-art porous adsorbents. This work provides the practical feasibility of synergistic adsorption to remove complex VOCs in real-world environments.

show abstract

Section: Textural Characterizationmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Swellable Array Strategy Based on Designed Flexible Double Hypercross-linked Polymers for Synergistic Adsorption of Toluene and Formaldehyde

Wang

Luan

Muhammad

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Among these methods, adsorption is considered to be a mature and effective one for VOC removal. The commonly used adsorbents are activated carbon, adsorption resin, modified starch adsorbents, modified cellulose adsorbents, and so on. − Unfortunately, they are too costly. Meanwhile, the rubber particles derived from waste tires have the advantages of low costs and stable physicochemical properties for adsorption …”

Section: Introductionmentioning

confidence: 99%

Using Waste Tire-Derived Particles to Remove Benzene and n-Hexane by Dynamic and Static Adsorption

et al. 2023

View full text Add to dashboard Cite

Scrap tire rubber particles were used and evaluated to adsorb some gaseous volatile organic compounds (VOCs), such as benzene and n-hexane. The results present that the adsorption capacities were 0.18 and 0.072 mg/g for n-hexane and benzene, respectively, in the static adsorption mode; the effective adsorption may be attributed to the carbon black of the tire. The adsorption process is in accordance with the Freundlich isothermal model and Lagergren pseudo-first-order kinetic equation. Correspondingly, the adsorption process is multilayer adsorption analyzed by the intramolecular diffusion model. In the dynamic adsorption mode, the maximum adsorption efficiencies of nhexane and benzene were 80.7 and 81%, respectively, at flow velocities of 0.1 L/min n-hexane and 0.2 L/min benzene.

show abstract

“…In terms of adsorption, adsorbent with the high capacity is regarded as a key factor in the efficient removal of dyes, while for the detection of trace dye molecules in complex samples, adsorbent with the high selectivity of separation and enrichment can effective inhibit interference from other molecules. As a result, to solve the problem of dye contamination, the fabrication of new adsorbent with the superior adsorption capacity and selectivity to dyestuff identification is a matter of great practical importance 11–14 . On the other hand, in the adsorption or monitoring of dyes in industrial wastewater or food samples, the traditional adsorbent often encounters a mass of interfering substances such as protein, esters, nucleic acids, humus, and other macromolecules.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, to solve the problem of dye contamination, the fabrication of new adsorbent with the superior adsorption capacity and selectivity to dyestuff identification is a matter of great practical importance. [11][12][13][14] On the other hand, in the adsorption or monitoring of dyes in industrial wastewater or food samples, the traditional adsorbent often encounters a mass of interfering substances such as protein, esters, nucleic acids, humus, and other macromolecules. Always, those substances will deposit on the adsorbent surface and undergo irreversible adsorption, blocking the recognition sites of the used adsorbents, thereby worsening the adsorption performance.…”

Section: Introductionmentioning

confidence: 99%

Preparation of copolymer brush‐type restricted access microspheres with adjustable adsorption selectivity to variety of dyes

Bo,

Tang,

Jia

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

Restricted access materials (RAMs) with adjustable selectivity was developed for the removal and detection of residual dyes for the solve problems of dye contamination. In this work, using homemade poly(4‐vinylbenzyl chloride‐co‐divinylbenzene) (PVBC/DVB) microspheres as substrate and successive two‐step surface‐initiated atom transfer radical polymerization (SI‐ATRP) as synthesis method, the two types of monomers, sodium 4‐vinylbenzene sulfonate (Nass) and styrene (St) were first grafted for constructing mixed interactions of adsorption sites, and then the hydrophilic glycidyl methacrylate (GMA) was polymerized, following by hydrolysis to construct diol groups on the external PVBC/DVB as the restricted access sites. The developed PVBC/DVB@poly(St‐co‐Nass)@poly(GMA) of adsorption properties was investigated by six dyes including methylene blue (MB), basic fuchsin (BF), acid fuchsin (AF), neutral red (NR), methyl orange (MO), and Congo red (CR), the adsorption capacities of those dyes and the removal rate for the binary mixed dye solution both rely on the ratio of St/Nass, confirming the adjustable adsorption selectivity. When PVBC/DVB@poly(St‐co‐Nass)@poly(GMA) was packed as solid phase extraction adsorbent in couple with UV–vis spectrum, it was applied to the determination of MB and BF in the water, fish and shrimp, good linearity with satisfactory recoveries for MB and BF are obtained to show the favorable practicability.

show abstract

Adsorption of low-concentration VOCs on various adsorbents: Correlating partition coefficient with surface energy of adsorbent

Cited by 32 publications

References 44 publications

Swellable Array Strategy Based on Designed Flexible Double Hypercross-linked Polymers for Synergistic Adsorption of Toluene and Formaldehyde

Swellable Array Strategy Based on Designed Flexible Double Hypercross-linked Polymers for Synergistic Adsorption of Toluene and Formaldehyde

Using Waste Tire-Derived Particles to Remove Benzene and n-Hexane by Dynamic and Static Adsorption

Preparation of copolymer brush‐type restricted access microspheres with adjustable adsorption selectivity to variety of dyes

Contact Info

Product

Resources

About