Combustion performance of pulverized coal and corresponding kinetics study after adding the additives of Fe2O3 and CaO

Gao, Qiuzhi; Zhang, Guopeng; Zheng, Haiyan; Jiang, Xin; Shen, Fengman

doi:10.1007/s12613-022-2432-5

Cited by 5 publications

(1 citation statement)

References 44 publications

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“…This probably happens due to the catalytic activity of the ZnO on the degradation process. Similar behavior was reported in papers for coal combustion pro-cesses with Fe 2 O 3 , CeO 2 , and CaO [38][39][40] and for enhanced photodegradation processes using ZnO nanoparticles [41][42][43].…”

Section: Thermogravimetric Tg% Analysis Of Pure Ac and Zno@ac Compositessupporting

confidence: 86%

Hydrogen Sulfide Removal via Sorption Process on Activated Carbon–Metal Oxide Composites Derived from Different Biomass Sources

Baikousi,

Gantzoudi,

Gioti

et al. 2023

Molecules

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Biomass exploitation is a global trend due to the circular economy and the environmentally friendly spirit. Numerous applications are now based on the use of biomass-derived products. Hydrogen sulfide (H2S) is a highly toxic and environmentally hazardous gas which is emitted from various processes. Thus, the efficient removal of this toxic hazardous gas following cost-effective processes is an essential requirement. In this study, we present the synthesis and characterization of biomass-derived activated carbon/zinc oxide (ZnO@AC) composites from different biomass sources as potential candidates for H2S sorption. The synthesis involved a facile method for activated carbon production via pyrolysis and chemical activation of biomass precursors (spent coffee, Aloe-Vera waste leaves, and corncob). Activated carbon production was followed by the incorporation of zinc oxide nanoparticles into the porous carbon matrix using a simple melt impregnation method. The synthesized ZnO@AC composites were characterized using X-ray diffraction (XRD), infrared spectroscopy (IR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and nitrogen porosimetry. The H2S removal performance of the ZnO@AC composites was evaluated through sorption experiments using a handmade apparatus. Our findings demonstrate that the Aloe-Vera-, spent coffee-, and corncob-derived composites exhibit superior H2S sorption capacity up to 106 mgH2S/gads., 66 mgH2S/gads., and 47 mgH2S/gads., respectively.

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