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Activated Carbon Adsorbent

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Guilin Zhou – One of the best experts on this subject based on the ideXlab platform.

Guizhi Zhang – One of the best experts on this subject based on the ideXlab platform.

  • Activated Carbon Adsorbents with micro-mesoporous structure derived from waste biomass by stepwise activation for toluene removal from air
    Journal of Environmental Chemical Engineering, 1
    Co-Authors: Guizhi Zhang, Bingman Lei, Shengming Chen, Hongmei Xie, Guilin Zhou
    Abstract:

    Abstract The waste biomass was used as raw materials to prepare Activated Carbon Adsorbents with micro-mesoporous structure. And the prepared Activated Carbon Adsorbents were used to adsorption remove toluene from air, which can achieve the goal of “treat waste with waste”. In this paper, biomass Activated Carbon Adsorbents with micro‒mesoporous structure were prepared by two-stage process of “low temperature Carbonization‒high temperature activation” using waste biomass as raw materials and H3PO4 as activator. The obtained results show that the activation temperature can significantly affect the structural characteristics, graphitization degree and surface chemical properties of the prepared Adsorbents, and the toluene adsorption and regeneration performances of the Adsorbent are significantly affected by its physicochemical properties. High thermal desorption temperature (100 °C) can destroy the strong interaction between the oxygen atoms of the oxygen-containing functional groups on the surface of the Adsorbent and the p-electrons of toluene aromatic ring, thus realizing the desorption of corresponding adsorbed toluene molecules. The low heat treatment temperature of 60 °C can destroy the strong adsorption from narrow micropores for toluene and π‒π conjugation effect between the Adsorbent and toluene molecules, which can realize the corresponding adsorbed toluene molecules to be desorbed. When the activation temperature is 650 °C, the Activated Carbon Adsorbent with surface area of 1006.2 m2/g, micro-mesoporous structure and mesoporous proportion of 65.5% can be prepared. The adsorption capacity of toluene can reach 417.0 mg/g, and the toluene thermal desorption regeneration can be realized at 60 °C. The results indicate that it is a promising Adsorbent material for toluene removal from air

Hosein Shojaee- Farah Abady Leila Nematpour – One of the best experts on this subject based on the ideXlab platform.

  • Removal of styrene by the synthesized ZnO nanoparticles coated on the Activated Carbon Adsorbent in the presence of UV irradiation
    , 2019
    Co-Authors: Mojtaba Nakhaei Pour Hossein Ali Rangkooy, Fereshteh Jahani, Ameneh Golbaghi, Hosein Shojaee- Farah Abady Leila Nematpour
    Abstract:

    Background: Volatile organic compounds are the major environmental pollutants causing adverse effects on the human health and the environment, therefore, tremendous effort has been put toward eliminating these compounds. Methods: In this study, the effect of synthesized nanoparticles on the removal of styrene from gas phase by photocatalytic process under UV irradiation in the cylindrical photoreactor was studied. The Activated Carbonzinc oxide (AC-ZnO) catalysts were prepared at different weight ratios (6%, 12%, and 18%) of ZnO. The prepared catalyst was characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and Brunauer-Emmett-Teller (BET) analyses. The effects of various parameters, such as concentrations of styrene, various weight percentage (wt%) of nanoparticles, and UV irradiation, were investigated. The efficiency of the AC-ZnO catalyst was determined based on its adsorption capacity, breakthrough time, and removal efficiency. Results: It was revealed that the photocatalytic removal efficiency of styrene was high in the presence of both ZnO nanoparticle and AC under UV light. Under optimal conditions, the efficiency of UV/ACZnO 18%, UV/AC-ZnO 12%, and UV/AC-ZnO 6% catalysts was 77%, 86%, and 83%, respectively. By increasing the concentration of input styrene, the photocatalytic removal efficiency was reduced, while the adsorption capacity of styrene increased. Conclusion: According to the results, the AC-ZnO 12% exhibited higher activity compared to other photocatalysts. Also, the amount of stabilized ZnO nanoparticles on the Activated Carbon affects the elimination rate of styrene. Keywords: Photocatalysis, Activated Carbon, Styrene, Zinc oxid

Leila Nematpour – One of the best experts on this subject based on the ideXlab platform.

  • Removal of styrene by the synthesized ZnO nanoparticles coated on the Activated Carbon Adsorbent in the presence of UV irradiation
    Environmental Health Engineering and Management, 2019
    Co-Authors: Mojtaba Nakhaei Pour, Hossein Ali Rangkooy, Fereshteh Jahani, Ameneh Golbaghi, Hosein Shojaee Farah Abady, Leila Nematpour
    Abstract:

    Background: Volatile organic compounds are the major environmental pollutants causing adverse effects on the human health and the environment, therefore, tremendous effort has been put toward eliminating these compounds. Methods: In this study, the effect of synthesized nanoparticles on the removal of styrene from gas phase by photocatalytic process under UV irradiation in the cylindrical photoreactor was studied. The Activated Carbonzinc oxide (AC-ZnO) catalysts were prepared at different weight ratios (6%, 12%, and 18%) of ZnO. The prepared catalyst was characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and Brunauer-Emmett-Teller (BET) analyses. The effects of various parameters, such as concentrations of styrene, various weight percentage (wt%) of nanoparticles, and UV irradiation, were investigated. The efficiency of the AC-ZnO catalyst was determined based on its adsorption capacity, breakthrough time, and removal efficiency. Results: It was revealed that the photocatalytic removal efficiency of styrene was high in the presence of both ZnO nanoparticle and AC under UV light. Under optimal conditions, the efficiency of UV/ACZnO 18%, UV/AC-ZnO 12%, and UV/AC-ZnO 6% catalysts was 77%, 86%, and 83%, respectively. By increasing the concentration of input styrene, the photocatalytic removal efficiency was reduced, while the adsorption capacity of styrene increased. Conclusion: According to the results, the AC-ZnO 12% exhibited higher activity compared to other photocatalysts. Also, the amount of stabilized ZnO nanoparticles on the Activated Carbon affects the elimination rate of styrene.

Robert E. Critoph – One of the best experts on this subject based on the ideXlab platform.