Functionalized graphene-trimethoxyphenyl silane for toluene removal from workplace air by sorbent gas extraction method

Hosseinabadi, Majid Bagheri; Timoori, shahnaz; Zarandi, Ali Faghihi

doi:10.24200/amecj.v2.i2.63

Cited by 15 publications

(6 citation statements)

References 39 publications

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“…The different features for VOCs' removal such as recovery (%), absorption capacity (AC), and aromatic compounds are compared together. Based on the results, the ST/HS-SPE procedure was comparable to other sorbent which was reported in different works (Bagheri Hosseinabadi et al 2019;Osanloo and Qurban-Dadras 2014;Faghihi Zarandi et al 2018;Jahangiri et al 2011;Hansmeier, 2010;Bina et al 2012;Shariq Vohra 2015;Qi et al 2018;Gholami et al 2014;Liu et al 2016;Rostami and Jonidi Jafari 2014;Vahdat Parast et al 2014;Britt et al Table 1 Validation…”

Section: Discussion and Comparing To Other Methodssupporting

confidence: 74%

“…Also, the leukemia can be seen in human exposure to benzene (Smaelnejad et al 2015). Due to benzene toxicity in human health, some of variable methods including adsorption (Smaelnejad et al 2015;Lashaki et al 2016;Gomez et al 2016;Gou and Bahrami Yarahmadi 2019;Ncube et al 2017;Jamshidzadeh and Shirkhanloo 2019;Bagheri Hosseinabadi et al 2019), photo-catalytic oxidation (Palau et al 2012;Weon and Choi 2016;Boulamanti and Philippopoulos 2008;Shang et al 2002), thermal oxidation and bio filtration (Wong et al 2015;Mohamed et al 2016) were used for removal of VOC's or BTEX from air. Among them, the adsorption process based on carbon sorbents (CNTs, NG, NGO) was used to remove VOCs from air.…”

Section: Introductionmentioning

confidence: 99%

“…2008). The environment friendly sorbent (TSIL-MWCNTs) with lower mass sorbent (10 mg), simple and low cost procedure at flow rate of 300 ml min −1 competitive to the Ter-phApm@MWCNTs sorbent with high cost/time and long procedure in flow rate 200 mL min −1 for 20 mg of sorbents(Bagheri Hosseinabadi et al 2019). The removal efficiency and the absorption capacity of[TPhPP][SUTO]-MWCNTs for benzene were obtained to be 98.8% and 169.6 mg g −1 for the static procedure and 94.6% and 142.2 mg g −1 for the dynamic method by flow rate of 300 ml min −1 , respectively.…”

mentioning

confidence: 99%

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Dynamic and static removal of benzene from air based on task-specific ionic liquid coated on MWCNTs by sorbent tube-headspace solid-phase extraction procedure

Ashouri

Shirkhanloo

Rashidi³

et al. 2020

Int. J. Environ. Sci. Technol.

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Human exposure to high levels of benzene in the air leads to toxic effects in human body and so, it is necessary to determine by high sensitivity and precision methodology. A simple and efficient method based on the triphenyl(3-sulfopropyl) phosphonium p-toluenesulfonate as TSIL was coated on multi-walled carbon nanotubes ([TPhPP][SUTO]-MWCNTs) and used for benzene vapor removal from air. By procedure, the tube and headspace sorbent based on solid-phase extraction coupled to gas chromatography-flame ionization detector (ST/HS-SPE-GC-FID) was used in dynamic and static systems, respectively. All effected factors including the flow rate, the mass sorbent, benzene concentration, the contact time and the temperature were optimized in dynamic and static systems. Chamber was designed for benzene generation in pure air, and then, mixture of gas moved to passive thermal desorption tubes (ST) or head space (HS) in the glass chromatography vials as dynamic and static methods, respectively. The benzene was eliminated from air with 10 mg of ([TPhPP][SUTO]-MWCNTs); C 28 H 29 O 6 PS 2 -MWCNTs, 1:1] at 25 °C, desorbed from the sorbent at 95 °C and measured by GC-FID. The removal efficiency and the absorption capacity of [TPhPP][SUTO]-MWCNTs for benzene were obtained to be 98.8% and 169.6 mg g −1 at flow rate of 300 ml min −1 . The chemical adsorption of benzene from air was related to π-π, electrostatic, hydrophobic interactions between aromatic chains of TSILs with the benzene molecules, and it caused the increase the removal efficiently of benzene vapor from air more than 95%. The results were validated by GC-MS and spiking of real samples which was determined by GC-FID.

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Section: Discussion and Comparing To Other Methodssupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Dynamic and static removal of benzene from air based on task-specific ionic liquid coated on MWCNTs by sorbent tube-headspace solid-phase extraction procedure

Ashouri

Shirkhanloo

Rashidi³

et al. 2020

Int. J. Environ. Sci. Technol.

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“…Also, Shahi Ahangar showed that the photocatalytic removal efficiency in the concentrations of 50, 100, and 300 ppm was equal to 87.8%, 98.9%, and 90.8%, respectively [10]. Many researchers used different pilot and nanoadsorbents (Ni-MWCNTs, GQDs, NGO, NG, MSN, ILs, Silica) to remove hazardous pollutants such as toluene, ethyl benzene, mercury, benzene, dust, and hydrogen sulfide from the air [4,[11][12][13][14][15][16][17][18][19][20]. Finally, according to those mentioned above and the high efficiency of nanoadsorbents compared to other adsorbents in the removal of different materials in the previous studies, a comparison study for adsorption of xylene from the air between commercial activated carbon absorbent and Nano carbon adsorbent was obtained to survey the effect of nanoadsorbent in the removal of xylene from the air.…”

Section: Introductionmentioning

confidence: 99%

A rapid removal of xylene from air based on nano-activated carbon in the dynamic and static systems and compared to commercial activated carbon before determination by gas chromatography

Jafarizaveh

Tabrizi

Golbabaei³

2022

Anal. Method Environ. Chem. J.

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As main air pollutants, volatile organic compounds (VOCs) must be paid special attention. In this study, the removal efficiency of xylene from the air was investigated by nano-activated carbons (NACs) as an efficient adsorbent and compared to commercial activated carbons (ACs). In the chamber, the xylene vapor in pure air was generated, stored in the airbag (5 Li), and moved to adsorbents. Then, the xylene vapor was absorbed on the NAC/AC adsorbents and desorbed from it by a heat accessory. The efficiency of xylene removal with NACs and ACs was investigated in the dynamic and static systems based on 100-700 mg L-1 of xylene, flow rates of 100 ml min-1, and 100 mg of adsorbent at a humidity of 32% (25°C). Xylene concentrations were determined by gas chromatography equipped with a flame ionization detector (GC-FID). In the batch system, the maximum absorption capacity for NACs and ACs was obtained at 205.2 mg g-1 and 116.8 mg g-1, respectively. The mean adsorption efficiency for NACs and ACs adsorbents was obtained at 98.5% and 76.55%, respectively. The RSD% for NACs ranged between 1.1-2.5% in optimized conditions. The characterizations of the NACs adsorbent showed that the particle-size range was between 35-100 nm.

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“…In other hands, the lead absorb by gastrointestinal of children up to 50% [3]. The aerosols, metals and VOCs were studied in several fields, including epidemiology, respiratory medicine, air purification technology, and air pollution removal by different techniques and pilots [11][12][13][14]. Aerosols are further categorized on the basis of the variation in the particle size.…”

Section: Introductionmentioning

confidence: 99%

A novel method based on functionalized bimodal mesoporous silica nanoparticles for efficient removal of lead aerosols pollution from air by solid-liquid gas-phase extraction

Zarandi

Shirkhanloo²,

Paydar

2020

J Environ Health Sci Engineer

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In this study, the enrichment and novel sorbent based on functionalized bimodal mesoporous silica nanoparticles (HS-UVM 7 and NH 2 -UVM 7 ) was used for removal of lead aerosols pollution from air by solid liquid gas phase extraction method (SLGPE). In bench scale set up, the lead aerosols [(Pb (NO 3 ) 2 , PbO] was generated by dispersive aerosols generator system (DAGS) and removed from air by reaction loop (RL) / impinger trap (IT) in a liquid phase which was mixed with nano adsorbent in optimized pH. The effect of parameters such as, flow rate, volume of liquid phase, time stirring, temperature, concentration, pH and amount of sorbent (mg) were studied and evaluated by flame atomic absorption spectrometry (FAAS). In optimized conditions, the adsorption capacity of HS-UVM 7 and NH 2 -UVM 7 for Pb(NO 3 ) 2 aerosols was obtained 255.6 mg g −1 and 177.6 mg g −1 , respectively which was more than UVM 7 . The lead oxides aerosols (PbO) were extracted only by HS-UVM 7 at acidic pH with the adsorption capacity of 271.2 mg g −1 . The characterization of SEM, XRD, TEM, and FTIR showed that the HS-UVM 7 has beneficial surfaces for removal of (Pb (NO 3 ) 2 and PbO aerosols from the air by SLGPE method at pH = 5. The method validation was confirmed by standard addition and NIOSH method.

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Functionalized graphene-trimethoxyphenyl silane for toluene removal from workplace air by sorbent gas extraction method

Cited by 15 publications

References 39 publications

Dynamic and static removal of benzene from air based on task-specific ionic liquid coated on MWCNTs by sorbent tube-headspace solid-phase extraction procedure

Dynamic and static removal of benzene from air based on task-specific ionic liquid coated on MWCNTs by sorbent tube-headspace solid-phase extraction procedure

A rapid removal of xylene from air based on nano-activated carbon in the dynamic and static systems and compared to commercial activated carbon before determination by gas chromatography

A novel method based on functionalized bimodal mesoporous silica nanoparticles for efficient removal of lead aerosols pollution from air by solid-liquid gas-phase extraction

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