Influence of mineral water constituents, organic matter and water matrices on the performance of the H2O2/IO4−-advanced oxidation process

2019 ◽  
Vol 5 (11) ◽  
pp. 1985-1992 ◽  
Author(s):  
Nor Elhouda Chadi ◽  
Slimane Merouani ◽  
Oualid Hamdaoui ◽  
Mohammed Bouhelassa ◽  
Muthupandian Ashokkumar
Keyword(s):  
Organic Matter ◽  
Water Treatment ◽  
Mineral Water ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Advanced Oxidation ◽  
Water Constituents

We have recently reported that the reaction of H2O2/IO4− could be a new advanced oxidation process for water treatment [N. E. Chadi, S. Merouani, O. Hamdaoui, M. Bouhelassa and M. Ashokkumar, Environ. Sci.: Water Res. Technol., 2019, 5, 1113–1123].

Recent trend in visible-light photoelectrocatalytic systems for degradation of organic contaminants in water/wastewater

2018 ◽  
Vol 4 (10) ◽  
pp. 1389-1411 ◽  
Author(s):  
Moses G. Peleyeju ◽  
Omotayo A. Arotiba
Keyword(s):  
Water Treatment ◽  
Visible Light ◽  
Organic Contaminants ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Recent Trend ◽  
Advanced Oxidation ◽  
Heterogeneous Photocatalysis ◽  
Treatment Technologies

Electrochemical advanced oxidation process and heterogeneous photocatalysis have received great attention in the last few years as alternative/complementary water treatment technologies.

Ballast Waters Treatment Using UV/(H2O2+O3) Advanced Oxidation Process with Heterosigma akashiwo, Pyramimimonas sp., and Escherichia coli as Indicator Microorganism

2013 ◽  
Vol 663 ◽  
pp. 946-952
Author(s):  
Hong Huang ◽  
Hua Feng Yu ◽  
Guang Ming Liu
Keyword(s):  
Escherichia Coli ◽  
Water Treatment ◽  
Residence Time ◽  
Ballast Water ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Advanced Oxidation ◽  
Hydraulic Residence Time ◽  
Ballast Water Treatment ◽  
Inactivation Efficiency

Introducing invasive species through ballast water is a specific pollution problem and has recently identified as one of the main concerns of Maritime Organizations. UV/(H2O2/O3) advanced oxidation process is a technological alternative to prevent this maritime pollution. In this present study, inactivation efficiency of the UV/(H2O2/O3) processes for ballast water treatment using Heterosigma akashiwo, Pyramimimonas sp. and Escherichia coli as indicator microorganisms was investigated. Compared with individual or combined two units processes using UV, H2O2 and O3, the UV/(H2O2+O3) process yield the highest levels of inactivation due to synergistic effects. In order to study the dynamic inactivation efficiency of equipment for stimulated ballast water treatment, the effects tests of the hydraulic residence time were conducted. The results indicated that the shorter hydraulic residence time had better inactivation efficiency. These findings have implications for the ballast water treatment.

Biofilm control in water by advanced oxidation process (AOP) pre-treatment: effect of natural organic matter (NOM)

2011 ◽  
Vol 64 (9) ◽  
pp. 1876-1884 ◽  
Author(s):  
Anat Lakretz ◽  
Eliora Z. Ron ◽  
Tali Harif ◽  
Hadas Mamane
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Biofilm Formation ◽  
Natural Waters ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Advanced Oxidation ◽  
Post Treatment ◽  
Control Effect ◽  
Biofilm Control

The main goal of this study was to examine the influence of natural organic matter (NOM) on the efficiency of H2O2/UV advanced oxidation process (AOP) as a preventive treatment for biofilm control. Pseudomonas aeruginosa PAO1 biofilm-forming bacteria were suspended in water and exposed to various AOP conditions with different NOM concentrations, and compared to natural waters. H2O2/UV prevented biofilm formation: (a) up to 24 h post treatment – when residual H2O2 was neutralized; (b) completely (days) – when residual H2O2 was maintained. At high NOM concentrations (i.e. 25 mg/L NOM or 12.5 mg/L DOC) an additive biofilm control effect was observed for the combined H2O2/UV system compared to UV irradiation alone, after short biofilm incubation times (<24 h). This effect was H2O2 concentration dependent and can be explained by the high organic content of these water samples, whereby an increase in NOM could enhance •OH production and promote the formation of additional reactive oxygen species. In addition, maintaining an appropriate ratio of bacterial surviving conc.: residual H2O2conc. post-treatment could prevent bacterial regrowth and biofilm formation.

Review on carbonaceous materials as persulfate activators: Structure performance relationship, mechanism and future perspectives in water treatment

2021 ◽  
Author(s):  
DANIEL TEMITAYO OYEKUNLE ◽  
xinquan zhou ◽  
Ajmal Shahzad ◽  
Zhuqi Chen
Keyword(s):  
Water Treatment ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Advanced Oxidation ◽  
Carbonaceous Materials ◽  
Future Perspectives ◽  
Organic Wastewater Contaminants ◽  
Organic Wastewater

Recently carbonaceous materials have attracted increasing attentions in advanced oxidation process (AOPs) due to their capability, adaptability and efficiency in the degradation of organic wastewater contaminants with little or no...

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