We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Optimization of Naphthol Green B adsorption and degradation by nZVI/CS/APT using Plackett-Burman designs and response surface methodology.
- Authors
Yajuan Zhang; Hui Xu; Lei Tian; Minzhang Chen; Xu Dong Jiang; Guojun Gou; Yong Chen
- Abstract
In this study, a novel nanoscale zero-valent iron/chitosan/attapulgite (nZVI/CS/APT) composite was successfully prepared and was employed to remove Naphthol Green B (NGB) from water. Compared to the individual components, the removal performance of the nZVI/CS/APT composite was observed to be dramatically improved. Further, the surface morphology of the composite was characterized, and the possible degradation mechanism was proposed. The results indicated that nanoscale zero-valent iron (nZVI) demonstrated high dispersity and reaction activity after supported by CS/APT. NGB was observed to be degraded into hypotoxic or non-toxic small molecules by nZVI/CS/APT. Further, the critical variables affecting the NGB removal efficiency were screened by the Plackett-Burman design. The interactive effects of the different factors and perfect removal conditions were further elucidated using the response surface methodology. The values of mFe/mCS-APT, adsorbent dosage, and pH were determined to be the main influencing factors. The average removal efficiency of NGB was determined to be 97.34% (three replicated experiments), which was almost similar to 98.89% predicted by the model. These results demonstrated the reliability of the statistical optimization designs for predicting the efficient removal of NGB.
- Subjects
RESPONSE surfaces (Statistics); NAPHTHOL; STATISTICAL reliability; SMALL molecules; EXPERIMENTAL design
- Publication
Desalination & Water Treatment, 2021, Vol 223, p434
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2021.27158