scholarly journals Hybrid zero valent iron (ZVI)/H2O2 oxidation process for landfill leachate treatment with novel nanosize metallic calcium/iron composite

2017 ◽  
Vol 67 (4) ◽  
pp. 475-487 ◽  
Author(s):  
Son Dong Lee ◽  
Srinivasa Reddy Mallampati ◽  
Byoung Ho Lee
Keyword(s):  
Landfill Leachate ◽  
Oxidation Process ◽  
Zero Valent Iron ◽  
Leachate Treatment ◽  
H2o2 Oxidation ◽  
Calcium Iron ◽  
Metallic Calcium

Stabilized landfill leachate treatment by coagulation-flocculation coupled with UV-based sulfate radical oxidation process

2018 ◽  
Vol 76 ◽  
pp. 575-581 ◽  
Author(s):  
Ahmad Razali Ishak ◽  
Fauziah Shahul Hamid ◽  
Sharifah Mohamad ◽  
Kheng Soo Tay
Keyword(s):  
Landfill Leachate ◽  
Oxidation Process ◽  
Sulfate Radical ◽  
Leachate Treatment ◽  
Radical Oxidation

Selective removal of nitroaromatic compounds from wastewater in an integrated zero valent iron (ZVI) reduction and ZVI/H2O2 oxidation process

RSC Advances ◽  
2015 ◽  
Vol 5 (71) ◽  
pp. 57444-57452 ◽  
Author(s):  
Jianguo Liu ◽  
Changjin Ou ◽  
Weiqing Han ◽  
Faheem Faheem ◽  
Jinyou Shen ◽  
...  
Keyword(s):  
Oxidation Process ◽  
Nitroaromatic Compounds ◽  
Integrated System ◽  
Selective Removal ◽  
Fenton Oxidation ◽  
Zero Valent Iron ◽  
H2o2 Oxidation

In this study, an integrated system comprised of zero-valent iron (ZVI) reduction and ZVI-based Fenton oxidation was applied for the selective removal of nitroaromatic compounds from 2,4-dinitroanisole producing wastewater.

scholarly journals Field-scale performance of microelectrolysis-Fenton oxidation process combined with biological degradation and coagulative precipitation for landfill leachate treatment

2019 ◽  
Vol 118 ◽  
pp. 04017
Author(s):  
Yuan-Yuan Zhao ◽  
You-Ze Xu ◽  
Shuang Zhou ◽  
Jiao-Mei Liu ◽  
Yingxiang Cheng ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
Industrial Application ◽  
Oxidation Process ◽  
Dominant Role ◽  
Full Scale ◽  
Fenton Oxidation ◽  
Biological Degradation ◽  
Leachate Treatment ◽  
Fenton Oxidation Process ◽  
Mature Landfill Leachate

In order to verify the feasibility of Fe/C microelectrolysis-Fenton oxidation for mature landfill leachate treatment in industrial application, this study conducted the treatment processes at full-scale by physicochemical and spectral characterization. The full-scale studies showed that 48.17% of the dissolved organic carbon (DOC) and 42.27% of the dissolved organic nitrogen (DON) were removed by the microelectrolysis-Fenton oxidation process, respectively. Spectra analysis further suggested that the mature leachate was mainly composed of tryptophan-like and fulvic-like compounds. The combination of microelectrolysis and Fenton oxidation efficiently decomposed the aromatic C=C into carboxyl-C and decreased the molecular size of DOC, resulting in a dramatic reduce (97.1%-98.3%) of the fluorescence intensity. The DON removal by microelectrolysis-Fenton oxidation likely associated with the NH2-decomposition of tryptophan-like and aromatic compounds into NO3-N. The tryptophan-like compounds may play a dominant role in Ba binding, while Pb and Cd were likely bound to both the tryptophan-like and fulvic-like compounds. Above 60% of the heavy metals were removed in the microelectrolysis-Fenton oxidation section. Results above confirmed the effectiveness of Fe/C microelectrolysis-Fenton oxidation for mature landfill leachate treatment in industrial application.

scholarly journals Simultaneous removal of COD and color from municipal landfill leachate using Ozone/Zinc Sulphate oxidation process

2017 ◽  
Vol 19 (3) ◽  
pp. 498-504 ◽  
Keyword(s):  
Landfill Leachate ◽  
Zinc Sulfate ◽  
Oxidation Process ◽  
Organic Substances ◽  
Leachate Treatment ◽  
Efficient Treatment ◽  
Municipal Landfill ◽  
Ozonation Time ◽  
High Level ◽  
Catalytic Ozone

Municipal landfill leachate generated from aged sites requires an efficient treatment to minimize the high level of refractory organic matters prior to final discharge. In the current study, the performance of combined ozonation and Zinc sulfate (ZnSO4) for anaerobic stabilized leachate treatment was investigated. The efficiency of Zn dosage [COD0/Zn ratio (g/g)], pH, and ozonation time was evaluated. The optimal removal efficiencies for COD and color were 90% and 99%, respectively at 1 g/6 g ZnSO4 dosage (COD0/Zn), pH 4, and 180 min reaction time. However, the performance of O3/Zn oxidation process in removing ammoniacal nitrogen from leachate was not efficient as less than 5% removal for ammonia was obtained. The results revealed that the performance of the new catalytic ozone method (i.e., O3/Zn) in removing removal organic substances from leachate was higher than another related oxidation process such as O3/Fenton and O3/persulfate.

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