Waste foundry sand/MgFe-layered double hydroxides composite material for efficient removal of Congo red dye from aqueous solution

被引：168

作者：

Ahmed, Dooraid N. ^{[1
]}

Naji, Laith A. ^{[2
]}

Faisal, Ayad A. H. ^{[2
]}

Al-Ansari, Nadhir ^{[3
]}

Naushad, Mu. ^{[4
]}

机构：

[1] Univ Kirkuk, Dept Math, Coll Educ Pure Sci, Kirkuk, Iraq

[2] Univ Baghdad, Dept Environm Engn, Coll Engn, Baghdad, Iraq

[3] Lulea Univ Technol, Dept Civil Environm & Nat Resources Engn, S-97187 Lulea, Sweden

[4] King Saud Univ, Dept Chem, Coll Sci, Riyadh 11451, Saudi Arabia

来源：

SCIENTIFIC REPORTS | 2020年 / 10卷 / 01期

关键词：

ADSORPTION-KINETICS; METAL-IONS; ENHANCED ADSORPTION; FLUORIDE REMOVAL; HEAVY-METALS; TEXTILE DYES; ISOTHERMS; EQUILIBRIUM; OXIDE; WATER;

D O I：

10.1038/s41598-020-58866-y

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：

We aimed to obtain magnesium/iron (Mg/Fe)-layered double hydroxides (LDHs) nanoparticles-immobilized on waste foundry sand-a byproduct of the metal casting industry. XRD and FT-IR tests were applied to characterize the prepared sorbent. The results revealed that a new peak reflected LDHs nanoparticles. In addition, SEM-EDS mapping confirmed that the coating process was appropriate. Sorption tests for the interaction of this sorbent with an aqueous solution contaminated with Congo red dye revealed the efficacy of this material where the maximum adsorption capacity reached approximately 9127.08mg/g. The pseudo-first-order and pseudo-second-order kinetic models helped to describe the sorption measurements, indicating that the physical and chemical forces governed the removal process.

引用

页数：12

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