Waste Carton-Derived Nanocomposites for Efficient Removal of Hexavalent Chromium

Langmuir : the ACS Journal of Surfaces and Colloids
Jie HanZhengyan Wu

Abstract

A new nanocomposite (SCZ), microspherical carbon (SC) loaded with nanoscale zerovalent iron (ZVI), was fabricated to efficiently remove hexavalent chromium (Cr(VI)) in water. Therein, SC was derived from waste carton through hydrothermal treatment after pretreatment of removing hemicellulose and lignin, and the optimal hydrothermal conditions (200 °C, hydrothermal time of 12 h) for the preparation of SC were obtained. Subsequently, SC could effectively load ZVI nanoparticles which displayed high dispersion on the surface of SC and in the pores among SC particles owing to steric hindrance effect. The obtained SCZ displayed a high removal efficiency of 100% within 5 h on Cr(VI) (20 mg/L), and the resultant SCZ-Cr could be conveniently separated from water because of its magnetism. Importantly, SCZ could be loaded in cardboard, and the obtained system could serve as a stable filter for removal of Cr(VI) in water. This work provides a cheap and effective method for Cr(VI) removal, which also greatly facilitates the recycling of waste carton.

References

Apr 8, 2006·Journal of Hazardous Materials·Nathalie MeunierJean-François Blais
Jul 20, 2011·Chemical Research in Toxicology·Anatoly Zhitkovich
Aug 4, 2011·Environmental Science & Technology·Zhigang KeZengliang Yu
Dec 27, 2016·Bioresource Technology·Soonita Anjeena RawoteeaSunil Kumar
Jul 1, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Dongfang WangZhengyan Wu
Jul 10, 2017·Waste Management·C RodriguezA G Olabi

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Citations

Apr 4, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Yi WeiHuihui Wang
Jun 4, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Emmanuvel ArputharajHans-Uwe Dahms
Nov 9, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Pengfei YangJinlou Gu

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