Single-Walled Carbon Nanotubes (SWCNTs), as a Novel Sorbent for Determination of Mercury in Air

Farideh Golbabaei, Ali Ebrahimi, Hamid Shirkhanloo, Alireza Koohpaei and Ali Faghihi-Zarandi

Global Journal of Health Science, 2016, vol. 8, issue 7, 273

Abstract: BACKGROUND- Based on the noticeable toxicity and numerous application of mercury in industries, removal of mercury vapor through sorbent is an important environmental challenge.PURPOSE OF THe STUDY- Due to their highly porous and hollow structure, large specific surface area, light mass density and strong interaction, Single-Walled Carbon Nanotubes (SWCNTs) sorbent were selected for this investigation.METHODS- In this study, instrumental conditions, method procedure and different effective parameters such as adsorption efficiency, desorption capacity, time, temperature and repeatability as well as retention time of adsorbed mercury were studied and optimized. Also, mercury vapor was determined by cold vapor atomic absorption spectrometry (CV-AAS).Obtained data were analyzed by Independent T- test, Multivariate linear regression and one way–ANOVA finally.RESULTS- For 80 mg nanotubes, working range of SWCNT were achieved 0.02-0.7 mg with linear range (R2=0.994).Our data revealed that maximum absorption capacity was 0.5 mg g-1 as well as limit of detection (LOD) for studied sorbent was 0.006 mg. Also, optimum time and temperature were reported, 10 min and 250 °C respectively. Retention time of mercury on CNTs for three weeks was over 90%. Results of repeated trials indicated that the CNTs had long life, so that after 30 cycles of experiments, efficiency was determined without performance loss.CONCLUSION- Results showed that carbon nanotubes have high potential for efficient extraction of mercury from air and can be used for occupational and environmental purposes. The study of adsorption properties of CNTs is recommended.

Date: 2016
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.ccsenet.org/journal/index.php/gjhs/article/download/55786/29868 (application/pdf)
http://www.ccsenet.org/journal/index.php/gjhs/article/view/55786 (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:ibn:gjhsjl:v:8:y:2016:i:7:p:273

Access Statistics for this article

More articles in Global Journal of Health Science from Canadian Center of Science and Education Contact information at EDIRC.
Bibliographic data for series maintained by Canadian Center of Science and Education ().