제지 슬러지 유래 영가철-탄소 복합체를 이용한 수중 6가 크롬 환원 연구 = Thermochemical Conversion of Paper Mill Sludge into Fe0-carbon Composite, and Its Application into Chromate Reduction

다국어 초록 (Multilingual Abstract)

Cr(VI), a highly toxic and carcinogenic compound commonly found in industrial waste, poses severe environmental andhealth hazards. Conventional methods for reducing Cr(VI) often require costly noble metal catalysts, making themimpractical for large-scale use. This study explored the thermochemical conversion of paper mill sludge into a zero-valentiron (ZVI)-carbon composite (biochar), an affordable and efficient catalyst for Cr(VI) reduction in water. During pyrolysis,amorphous iron compounds were converted into ZVI by the reductive gases (H2 and CO) released from organic materials.
The resulting ZVI-carbon composite was highly efficient in Cr(VI) reduction in presence of formic acid, offering asustainable and economically viable alternative to traditional methods. This approach not only addresses the environmentalchallenge of Cr(VI) contamination but also contributes to waste valorization, transforming waste into valuable industrialresources and promoting a circular economy.

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