Removal of γ-HCH, 1,4-Dichlorobenzene and trichloromethane from air via the adsorption of snow

Wang, Nan; Liu, Hanfei; Kang, Chao; Wang, Yuhan; Xiao, Kunkun; Tong, Tian

doi:10.1016/j.atmosenv.2019.06.012

Cited by 1 publication

(3 citation statements)

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“…Different characteristics of the ZnO/GO nanocomposite were compared with reported adsorbents used for the removal of chloroform, and the results are summarized in Table 4 (23,(50)(51)(52). As seen, the proposed ZnO/GO had a greater maximum adsorption capacity and surface characteristics compared to the other adsorbents.…”

Section: Comparing Zno/go Nanocomposites With Other Adsorbentsmentioning

confidence: 97%

“…Moreover, this method has the drawback of producing toxic byproducts such as phosgene and furan (17,18). Adsorption of pollutants is a favorable technique to remove hydrocarbons due to its simplicity, non-destructiveness, and being cost-effective (12,16,(19)(20)(21)(22)(23). By using electromagnetic induction, the Fenton like process was applied for the removal of chloroform.…”

Section: Introductionmentioning

confidence: 99%

“…This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited. mud, were also applied for the remediation of chloroform from water resources (12,16,(23)(24)(25).…”

Section: Introductionmentioning

confidence: 99%

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Cheap Nano-Adsorbents Based on Zno/Mineral Nanocomposites for Removal of Chloroform from Water Solution

Salehi-Babarsad

Derikvand

Razaz

et al. 2020

Jundishapur J Health Sci

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Background: Chloroform, as a hazardous chemical, can contaminate water resources via the reaction of chlorine as an antiseptic chemical with humic acids resulted from agricultural activities. In humans, chloroform may cause dizziness, heart disorders, and disorders of the nervous system. Hence, its removal is of crucial importance. Objectives: The current study aimed to propose cheap and efficient adsorbents to remove chloroform from water. Methods: Four different nanomaterials (ZnO, ZnO/graphene oxide (ZnO/GO), ZnO/GO/Zeolite, and GO/Zeolite nanocomposites) were prepared and characterized with X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) images. Textural properties of the nano- adsorbents were evaluated using Brunauer Emmet Teller (BET) and Barrett-Joyner-Halenda (BJH) techniques. Different isotherms and kinetic models were studied. The effect of pH on the removal efficiency of the nano-adsorbents was tested. Regenerability of the nano-adsorbents towards the removal of the chloroform was also evaluated. Results: XRD patterns and FESEM images of the nanocomposites confirmed lattice structures and nanoscale particle size of the prepared nanocomposites. According to the BET and BJH models, all samples had mesoporous structures. The BJH cumulative surface area of pores of ZnO, ZnO/GO, ZnO/GO/Zeolite, and GO/Zeolite nanocomposites were 8.5, 26.4, 17.2, and 20.8 m2/g, respectively. The best removal speed and efficiency were obtained according to the different isotherm and kinetic models for the removal of chloroform ZnO/GO nanocomposites. All adsorbents revealed characteristic adsorption in the pH range of 7 to 8. Conclusion: The ZnO/GO, a cheap and efficient nanocomposite, showed the best performance to remove chloroform from water samples due to its superior textural property. Hence, it can be used to remove chloroform from water for up to 5 cycles.

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Section: Comparing Zno/go Nanocomposites With Other Adsorbentsmentioning

confidence: 97%