DEGRADATION OF 2, 4, 6-TRINITOTOLUENE IN AQUEOUS SOLUTION BY OZONATION AND MULTI-STAGE OZONATION BIOLOGICAL TREATMENT

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EL DIWANI G.; EL RAFIE S.; HAWASH S.

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Journal: INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST) Year:2009 | Volume:6 | Issue:4 (24) Page(s): 619-628

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Title

DEGRADATION OF 2, 4, 6-TRINITOTOLUENE IN AQUEOUS SOLUTION BY OZONATION AND MULTI-STAGE OZONATION BIOLOGICAL TREATMENT

Author(s)

EL DIWANI G. | EL RAFIE S. | HAWASH S. | Issue Writer Certificate

Keywords

CHEMICAL OXIDATION

POLLUTANTS MINERALIZATION

RED WATER

REMOVAL

TOTAL ORGANIC CARBON

Abstract

The objective of this study was to explore the extent of 2,4,6-trinitrotoluene synthetic solution and RED WATER mineralization by comparing conventional direct ozonation and multi-stage ozonation-biological treatment process. The alkaline hydrolysis was used for remediation 2, 4, 6-trinitrotoluene and RED WATER at pH = 10.9. Nevertheless, the hydroxyl radicals would be generated by ozone decomposition with ozone dose of 0.177 g/L. The samples were subjected to chemical oxygen demand and TOTAL ORGANIC CARBON analysis to monitor pollutants REMOVAL. The rate of 2, 4, 6-trinitrotoluene and RED WATER pollutants degradation were quantified using high performance liquid chromatography. 2, 4, 6-trinitrotoluene synthetic solution resulted 55.5 % chemical oxygen demand REMOVAL by 3 h direct ozonation. Following direct ozonation the biological treatment twenty four hours chemical oxygen demand reached 98.9 % and 98.7 % REMOVAL using humic acid and river water 1 % ( v/v) inoculation singly and respectively. Conventional direct ozonation showed non significant change in TOTAL ORGANIC CARBON degradation. While on using multi-stage ozone-biological treatment process where humic acid and/or river water were used as inoculums singly and respectively, TOTAL ORGANIC CARBON fulfilled 73 % and 98.3 % REMOVAL. The process was one hour direct ozonation and followed by three days multistage ozone-biological treatment. In multi-stage ozone-biological treatment process, ozonation was effective to decompose TOTAL ORGANIC CARBON and to produce biodegradable dissolved organic carbon easily removed by ozone oxidation up to 98.3 % in 2,4,6-trinitrotoluene synthetic solution. Pollutants REMOVAL achieved 99 % in authentic RED WATER effluent using river inoculation 1 % (v/v) in 5 days. Nuclear Magnetic Resonance and Fourier Transformation Infra Red methods were performed to confirm types of pollutants content in RED WATER.

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APA: Copy

EL DIWANI, G., EL RAFIE, S., & HAWASH, S.. (2009). DEGRADATION OF 2, 4, 6-TRINITOTOLUENE IN AQUEOUS SOLUTION BY OZONATION AND MULTI-STAGE OZONATION BIOLOGICAL TREATMENT. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), 6(4 (24)), 619-628. SID. https://sid.ir/paper/285192/en

Vancouver: Copy

EL DIWANI G., EL RAFIE S., HAWASH S.. DEGRADATION OF 2, 4, 6-TRINITOTOLUENE IN AQUEOUS SOLUTION BY OZONATION AND MULTI-STAGE OZONATION BIOLOGICAL TREATMENT. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST)[Internet]. 2009;6(4 (24)):619-628. Available from: https://sid.ir/paper/285192/en

IEEE: Copy

G. EL DIWANI, S. EL RAFIE, and S. HAWASH, “DEGRADATION OF 2, 4, 6-TRINITOTOLUENE IN AQUEOUS SOLUTION BY OZONATION AND MULTI-STAGE OZONATION BIOLOGICAL TREATMENT,” INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), vol. 6, no. 4 (24), pp. 619–628, 2009, [Online]. Available: https://sid.ir/paper/285192/en

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