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Efficient Adsorptive Performance of Graphene Oxide by Nano Clay

Authors :
Wenjie Yu
Biao Qian
Beifeng Lv
Haibo Kang
Ping Jiang
Wei Wang
Na Li
Source :
Nature Environment and Pollution Technology. 21:1125-1135
Publication Year :
2022
Publisher :
Technoscience Publications, 2022.

Abstract

Research regarding the use of Nano clay to remove toxic GO (Graphene oxide) from wastewater was limited. Through a variety of characterization techniques and methods, the adsorption performance and mechanism of Nano clay for GO were systematically studied. The related effects of solution pH, temperature, adsorbent dose, and GO concentration were studied in detail. The results show that the aggregation and deposition of GO on Nano clay depends on the pH value of the solution and the type and concentration of the electrolyte, and the isotherm data fits well with the Langmuir equation. Under the best conditions (pH=3.0), the maximum removal rate is 97.8% (C0=60 mg·L-1), and the adsorption capacity is 245.8 mg.g-1 (C0=80 mg.L-1, T=303K, equilibrium time=24 h, m=10 mg). Specifically, the dissolution of Nano clay at a relatively low pH or a high pH value helps the aggregation of GO. The results of this study provide key information for predicting the fate of GO in the land-water transition zone where Nano clay exists.

Details

ISSN :
23953454
Volume :
21
Database :
OpenAIRE
Journal :
Nature Environment and Pollution Technology
Accession number :
edsair.doi...........d90080ae086315605505f5c113f42976