General Information
    • ISSN: 2010-0221
    • Frequency: Bimonthly
    • DOI: 10.18178/IJCEA
    • Editor-in-Chief: Dr. Eldin W. C. Lim
    • Executive Editor: Mr. Ron C. Wu
    • Abstracting/ Indexing: Chemical Abstracts Services (CAS), Ulrich's Periodicals Directory, CABI, DOAJ, Electronic Journals Library, Google Scholar, Engineering & Technology Digital Library, ProQuest, and Crossref
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Dr. Eldin W. C. Lim
Dept. of Chemical and Biomolecular Engineering,
National University of Singapore, Singapore
IJCEA 2015 Vol.6(2): 125-129 ISSN: 2010-0221
DOI: 10.7763/IJCEA.2015.V6.465

The Efficiency of nZnO for Remediation of Trinitrotoluene Contaminated Water

W. Kosanlavit, W. Saikeaw, and R. Kosanlavit
Abstract—This study was aimed to determine the optimal dosages of nZnO, removal efficiency, degradation rate, kinetic removal rates and photocatalytic effects on remediation of TNT-contaminated water by nZnO. The varying concentrations of nZnO were used at 1,000, 2,000 and 3,000 ppm for remediation. The results were found that the removal efficiency were similar at 2,000 and 3,000 ppm of nZnO concentrations ( 29.20 % and 29.43 %, respectively). The times were varied at 10, 20 and 30 minutes. The nZnO with the concentration of 2,000 ppm was added to TNT-contaminated water and the mixture was left for required periods of time. It showed that the removal efficiency was increased with times. However, the highest efficiency was found only 34.35 % with the time point of 30 minutes. The photocatalytic effect on remediation of nZnO for TNT-contaminated water was carried out by exposing the mixture to the sunlight at one of three different times for 30 minutes. The results demonstrated that the highest removal efficiency was found at 71.93 % in the afternoon. This study concluded that the remediation of TNT-contaminated water by nZnO can be enhanced by exposure to the sunlight as a photocatalyst.

Index Terms—Nanoscale Zinc oxide, trinitrotoluene, contaminated water, remediation, photocatalyst.

W. Kosanlavit is with Nakhon Ratchasima Rajabhat University, Nakhon Ratchasima, 30000 Thailand.
W. Saikeaw is with Ubon Ratchathani Rajabhat University, Ubon Ratchathani Rajabhat University, 34000 Thailand. R. Kosanlavit is with Institute of Science, Suranaree University of Technology. Nakhon Ratchasima, 30000 Thailand (e-mail:


Cite: W. Kosanlavit, W. Saikeaw, and R. Kosanlavit, "The Efficiency of nZnO for Remediation of Trinitrotoluene Contaminated Water," International Journal of Chemical Engineering and Applications vol. 6, no. 2, pp. 125-129, 2015.

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