Abstract
Water treatment sludge (WTS), hydrothermally synthesized powder (HSP) using the WTS, and CuO added HSP (CuHSP) after heat treatment at 500℃ were prepared and its hydrogen sulfide (H<sub>2</sub>S) removal properties were investigated. The physicochemical properties of adsorbents were studied by N<sub>2</sub> adsorption-desorption, scanning electron microscope, x-ray diffraction, and thermogravimetric-differential thermal analysis. The specific surface area for the WTS was 42.7㎡/g and was increased by 78.1㎡/g after the hydrothermal reaction and was maximized by 168.7㎡/g after the heat treatment at 500℃ for 1 h. The breakthrough time of the WTS, HSP, and CuHSP for H<sub>2</sub>S removal at 25℃ was measured for 10 min, 20 min, and 170 min, respectively, thus demonstrating an effective application of WTS as the catalytic carrier for low temperature H<sub>2</sub>S removal.
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