Hexavalent chromium ion removal from wastewater using novel nanocomposite based on the impregnation of zero-valent iron nanoparticles into polyurethane foam

被引：20

作者：

Saad, Eman M. ^{[1
]}

Abd-Elhafiz, Mohammed F. ^{[1
]}

Ahmed, Eman M. ^{[2
]}

Markeb, Ahmad Abo ^{[3
]}

机构：

[1] Suez Univ, Fac Sci, Chem Dept, Suez, Egypt

[2] South Vally Univ, Fac Engn, Chem Dept, Qena, Egypt

[3] Assiut Univ, Fac Sci, Dept, Assiut, Egypt

来源：

SCIENTIFIC REPORTS | 2024年 / 14卷 / 01期

关键词：

Polyurethane foam; Hexavalent chromium removal; Zero-valent iron nanoparticles; Wastewater; Response surface methodology; Modelling; TRIAZOLE DERIVATIVES; AQUEOUS-SOLUTION; CR(VI) REMOVAL; ADSORPTION; DEGRADATION; REDUCTION;

D O I：

10.1038/s41598-024-55803-1

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In this study, we developed a novel nanocomposite, polyurethane foam impregnated with zero-valent iron nanoparticles (PU@nZVI), for the effective removal of chromium(VI) from various water sources. The characterization of nanocomposite (PU@nZVI) was performed by XRD, SEM-EDS, TEM and FT-IR techniques. Using the response surface methodology, we optimized the removal conditions, achieving an optimal pH of 2 and a dose of 0.5 g/L. The PU@nZVI demonstrated an excellent maximum adsorption capacity of 600.0 mg/g for Cr6+. The adsorption kinetics and isotherms were best described by the pseudo-second-order model and the Freundlich isotherm, respectively. Significantly, the nanocomposite removed 99.98% of Cr6+ from tap water, 96.81% from industrial effluent, and 94.57% from treated sewage wastewater. Furthermore, the PU@nZVI maintained its efficiency over five adsorption-desorption cycles, highlighting its reusability. These results suggest that the PU@nZVI nanocomposite is a highly efficient and sustainable option for chromium(VI) removal in water treatment applications.

引用

页数：15

共 53 条

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