Thermally Activated Persulfate Oxidation of Trichloroethylene (TCE) and 1,1,1-Trichloroethane (TCA) in Aqueous Systems and Soil Slurries

2003 ◽  
Vol 12 (2) ◽  
pp. 207-228 ◽  
Author(s):  
Chen Ju Liang ◽  
Clifford J. Bruell ◽  
Michael C. Marley ◽  
Kenneth L. Sperry
Keyword(s):  
Aqueous Systems ◽  
Persulfate Oxidation ◽  
Thermally Activated ◽  
Activated Persulfate

Persulfate oxidation for the aniline degradation in aqueous systems

2011 ◽  
Vol 63 (7) ◽  
pp. 1434-1440 ◽  
Author(s):  
Jin Anotai ◽  
Nalinrut Masomboon ◽  
Chung-Lin Chuang ◽  
Ming-Chun Lu
Keyword(s):  
Ferrous Ion ◽  
Molar Ratio ◽  
Aqueous Systems ◽  
Optimum Ratio ◽  
Ferrous Ions ◽  
Persulfate Oxidation ◽  
Molar Ratios ◽  
Thermally Activated ◽  
Oxidation Experiment ◽  
Activated Persulfate

Ferrous catalyzed persulfate oxidation of dissolved aniline was investigated in aqueous systems under a variety of ferrous ion concentrations and temperature. Result showed that the addition of ferrous ions accelerated the degradation of aniline by persulfate. For the thermally activated persulfate oxidation experiment, the optimum persulfate/aniline concentration ratio at 30˚C was at 5.4 mM or 20/1. This ratio gave the highest aniline removal of 45%. For the ferrous ion catalyzed persulfate oxidation experiment, there was marginal difference in the result for the various ferrous ion/oxidant molar ratios. Thus, another series of experiment was conducted to determine the optimum ratio and a ferrous ion/persulfate molar ratio of 1.25/1 showed the highest removal efficiency.

Thermally activated persulfate oxidation of NAPL chlorinated organic compounds: effect of soil composition on oxidant demand in different soil-persulfate systems

2017 ◽  
Vol 75 (8) ◽  
pp. 1794-1803 ◽  
Author(s):  
Jialu Liu ◽  
Zhehua Liu ◽  
Fengjun Zhang ◽  
Xiaosi Su ◽  
Cong Lyu
Keyword(s):  
Organic Compounds ◽  
Mineral Content ◽  
Removal Rate ◽  
Soil Types ◽  
Soil Composition ◽  
Persulfate Oxidation ◽  
Chlorinated Volatile Organic Compounds ◽  
Thermally Activated ◽  
Soil Components ◽  
Activated Persulfate

This study investigates the interaction of persulfate with soil components and chlorinated volatile organic compounds (CVOCs), using thermally activated persulfate oxidation in three soil types: high sand content; high clay content; and paddy field soil. The effect of soil composition on the available oxidant demand and CVOC removal rate was evaluated. Results suggest that the treatment efficiency of CVOCs in soil can be ranked as follows: cis-1,2-dichloroethene > trichloroethylene > 1,2-dichloroethane > 1,1,1-trichloroethane. The reactions of soil components with persulfate, shown by the reduction in soil phase natural organics and mineral content, occurred in parallel with persulfate oxidation of CVOCs. Natural oxidant demand from the reaction of soil components with persulfate exerted a large relative contribution to the total oxidant demand. The main influencing factor in oxidant demand in paddy-soil-persulfate systems was natural organics, rather than mineral content as seen with sand and clay soil types exposed to the persulfate system. The competition between CVOCs and soil components for oxidation by persulfate indicates that soil composition exhibits a considerable influence on the available oxidant demand and CVOC removal efficiency. Therefore, soil composition of natural organics and mineral content is a critical factor in estimating the oxidation efficiency of in-situ remediation systems.

Naproxen abatement by thermally activated persulfate in aqueous systems

2015 ◽  
Vol 279 ◽  
pp. 861-873 ◽  
Author(s):  
Antoine Ghauch ◽  
Al Muthanna Tuqan ◽  
Nadine Kibbi
Keyword(s):  
Aqueous Systems ◽  
Thermally Activated ◽  
Activated Persulfate

Ultrasound assisted, thermally activated persulfate oxidation of coal tar DNAPLs

2016 ◽  
Vol 318 ◽  
pp. 497-506 ◽  
Author(s):  
Libin Peng ◽  
Li Wang ◽  
Xingting Hu ◽  
Peihui Wu ◽  
Xueqing Wang ◽  
...  
Keyword(s):  
Coal Tar ◽  
Persulfate Oxidation ◽  
Thermally Activated ◽  
Ultrasound Assisted ◽  
Activated Persulfate

Degradation of volatile organic compounds with thermally activated persulfate oxidation

Chemosphere ◽  
2005 ◽  
Vol 61 (4) ◽  
pp. 551-560 ◽  
Author(s):  
Kun-Chang Huang ◽  
Zhiqiang Zhao ◽  
George E. Hoag ◽  
Amine Dahmani ◽  
Philip A. Block
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Persulfate Oxidation ◽  
Thermally Activated ◽  
Volatile Organic ◽  
Activated Persulfate

scholarly journals Response surface methodological approach for optimizing removal of ciprofloxacin from aqueous solution using thermally activated persulfate/aeration systems

2017 ◽  
Vol 19 (3) ◽  
pp. 389-395 ◽  
Keyword(s):  
Aqueous Solution ◽  
Removal Efficiency ◽  
Methodological Approach ◽  
Persulfate Oxidation ◽  
Thermally Activated ◽  
Initial Ph ◽  
Ph Range ◽  
Optimized Conditions ◽  
Mn3o4 Nanoparticles ◽  
Activated Persulfate

Being used in large quantities for some decades, antibiotics have been of little notice since their existence in the environment. Present study aims at investigating the optimization of Ciprofloxacin removal (CIP) in Thermally Activated Persulfate (TAP)/Aeration systems by Central Composite Design (CCD). The effect of operating parameters including initial pH, CIP concentration, Persulfate concentration and temperature on the removal process was investigated in order to find out the optimum conditions. Typically, high temperature, high Persulfate dose, and low initial CIP concentration increased the removal efficiency of CIP. At the tested pH range of 3–11, the highest removal occurred at pH 3.93. Finally, the effects of Mn3O4 Nanoparticles, N2 gas, and COD reduction in optimal condition were studied. Mn3O4 Nanoparticles and N2 gas in optimized conditions increased the removal efficiency from 93.41 to 90.1, respectively. The results showed that Thermally Activated Persulfate oxidation was the efficient process for the treatment of aqueous solution containing Ciprofloxacin due to the production of Sulfate radicals.

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