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Preparation of desulfurizing activated carbon from corn stalk and characterization of desulfurizing structure

    Fen Li Affiliation
    ; He Wang Affiliation
    ; Yanping Zhang Affiliation
    ; Qifei Wang Affiliation

Abstract

This study investigated the optimal conditions for preparing desulfurizing stalk carbon, using corn stalk as a raw material and zinc chloride as an activator. The structure of stalk carbon was characterized using thermogravimetry (TG), fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Brunauer – Emmelt – Teller (BET). Results found no significant difference in stalk carbon desulfurization properties when using stalk skin, core, or a skin-core mixture as raw material. The desulfurization performance of stalk carbon prepared using a skin-core mixture, was the most effective when the material : liquid ratio was 1:2; activation temperature was 350 °C; and activation time was 70 min. The corresponding H2S adsorption time was 74 min. The large specific surface area of 562.28 m2/g and abundant pore-volume of 0.3851 ml/g was found in the desulfurization stalk carbon prepared using these conditions. The increase in micropores and the abundant oxygen-containing functional surface groups were conducive to H2S adsorption. The desulfurization products were found to be mainly elemental S and sulfite.

Keyword : corn stalk, activated carbon, deodorization, adsorption, biomass, hydrogen sulfide

How to Cite
Li, F., Wang, H., Zhang, Y., & Wang, Q. (2019). Preparation of desulfurizing activated carbon from corn stalk and characterization of desulfurizing structure. Journal of Environmental Engineering and Landscape Management, 27(1), 33-40. https://doi.org/10.3846/jeelm.2019.8001
Published in Issue
Mar 14, 2019
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This work is licensed under a Creative Commons Attribution 4.0 International License.

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