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Role of reactive ox...
Role of reactive oxygen species and effect of solution matrix in trichloroethylene degradation from aqueous solution by zeolite-supported nano iron as percarbonate activator
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- Danish, Muhammad (author)
- East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China.,East China University of Science and Technology, Shanghai, China
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- Gu, Xiaogang (author)
- East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China.,East China University of Science and Technology, Shanghai, China
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- Lu, Shuguang (author)
- East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China.,East China University of Science and Technology, Shanghai, China
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- Xu, Minhui (author)
- East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China.,East China University of Science and Technology, Shanghai, China
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- Zhang, Xiang (author)
- East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China.,East China University of Science and Technology, Shanghai, China
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- Fu, Xiaori (author)
- East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China.,East China University of Science and Technology, Shanghai, China
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- Xue, Yunfei (author)
- East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China.,East China University of Science and Technology, Shanghai, China
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- Miao, Zhouwei (author)
- East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China.,East China University of Science and Technology, Shanghai, China
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- Naqvi, Muhammad (author)
- Mälardalens högskola,Framtidens energi
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- Nasir, Muhammad (author)
- COMSATS Inst Informat Technol, IRCBM, Lahore, Pakistan.,IRCBM, COMSATS Institute of Information Technology, Lahore, Pakistan
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East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China East China University of Science and Technology, Shanghai, China (creator_code:org_t)
- 2016-03-23
- 2016
- English.
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In: Research on chemical intermediates (Print). - : Springer. - 0922-6168 .- 1568-5675. ; 42:9, s. 6959-6973
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The role of reactive oxygen species (ROSs) and effect of solution matrix have been investigated for the degradation of trichloroethylene (TCE). Zeolite-supported nano iron (Z-nZVI) was synthesized as an activator to catalyze sodium percarbonate (SPC) with or without hydroxylamine, i.e. as reducing agent (RA). The probe tests confirmed the generation of OH center dot and O-2(-center dot) in the Z-nZVI activated SPC system in absence of the RA, while the presence of RA significantly increased the generation of OH center dot and O-2(-center dot) radicals. Scavenger tests demonstrated that OH center dot was the main ROS responsible for TCE degradation, whereas O-2(-center dot) also participated in TCE degradation. From the solution matrix perspective, the experimental results confirmed significant scavenging effects of Cl- (1.0, 10.0, and 100 mmol L-1) and HCO3- (1.0 and 10.0 mmol L-1), whereas the scavenging effects were fairly impeded at 100 mmol L-1 concentration of HCO3-. On the other hand, a considerable decline in scavenging effect was observed in the presence of RA in tested Cl and HCO3- concentration ranges. In addition, negligible scavenging effects of NO3- and SO42- anions were found in all tested concentrations. The effect of initial solution pH on catalytic activity indicated a significant increase in the TCE degradation in the presence of RA even at higher pH value of 9. The results indicated that the Z-nZVI activated SPC system in presence of RA can effectively degrade chlorinated organic solvents, but it is important to consider the intensive existence of anions in groundwater.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Keyword
- Trichloroethylene (TCE)
- Solution matrix
- Reactive oxygen species (ROSs)
- Zeolite supported nano iron particles (Z-nZVI)
- Groundwater remediation
- Chemical Engineering
- Kemiteknik
- Energy- and Environmental Engineering
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Danish, Muhammad
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Gu, Xiaogang
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Lu, Shuguang
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Xu, Minhui
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Zhang, Xiang
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Fu, Xiaori
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show more...
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Xue, Yunfei
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Miao, Zhouwei
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Naqvi, Muhammad
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Nasir, Muhammad
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show less...
- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Chemical Enginee ...
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Research on chem ...
- By the university
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Karlstad University
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Mälardalen University