Drastic enhancement on Fenton oxidation of organic contaminants by accelerating Fe(iii)/Fe(ii) cycle with l-cysteine

RSC Advances ◽  
2016 ◽  
Vol 6 (53) ◽  
pp. 47661-47668 ◽  
Author(s):  
Lianshun Luo ◽  
Yuyuan Yao ◽  
Fei Gong ◽  
Zhenfu Huang ◽  
Wangyang Lu ◽  
...  
Keyword(s):  
Organic Contaminants ◽  
Fenton Oxidation ◽  
Oxidation Efficiency ◽  
Fenton System

The introduction of l-cysteine to the Fenton system improved the oxidation efficiency dramatically by accelerating the transformation from Fe(iii) to Fe(ii) and significantly promoted the generation of ˙OH.

On the Limitation of Fenton Oxidation Operational Parameters: A Review

2012 ◽  
Vol 10 (1) ◽  
Author(s):  
Basheer Hasan Diya'uddeen ◽  
Abdul Aziz A.R. ◽  
W.M.A.W. Daud
Keyword(s):  
Wastewater Treatment ◽  
Organic Contaminants ◽  
Advanced Oxidation Process ◽  
Catalytic Decomposition ◽  
Economic Benefits ◽  
Fenton Oxidation ◽  
Treated Wastewater ◽  
Operational Parameters ◽  
Fenton Reagents ◽  
The Many

Abstract The literature on the use of Fenton oxidation in wastewater treatment has established the method as one of the most effective and suitable methods for recalcitrant wastewater treatment. It is an advanced oxidation process (AOP) that utilises the highly reactive hydroxyl radical (•OH) to aggressively and non-selectively destroy organic contaminants. The Fenton oxidation possesses environmental and economic benefits coupled with effective mineralisation of most wastewater organics. Broadly, the Fenton oxidation encompasses three types of oxidation routes for the production of •OH: (i) through the use of Fenton reagents alone, termed classical Fenton oxidation (CFO), (ii) assisted by means of UV (photo-Fenton), or (iii) electron beams (electro-Fenton). However, this review is limited to CFO, which involves the catalytic decomposition of hydrogen peroxide (H2O2) by suitable transition metals to generate •OH. Despite the many advantages of the CFO process, there are issues related to operational parameters and the final treated wastewater, the most notable being pH modulation, the presence of the catalyst and the cost of the oxidant (H2O2). Furthermore, sludge generation constitutes an apparent drawback to the utilisation of this technology. This paper attempts to review the highlighted limitations and presents researches and advances reported in the literature addressing these issues.

scholarly journals The mechanism and oxidation efficiency of bio-electro-Fenton system with Fe@Fe2O3/ACF composite cathode

2020 ◽  
Vol 234 ◽  
pp. 116103 ◽  
Author(s):  
Peng Xu ◽  
Dayang Zheng ◽  
Zhiyi Xie ◽  
Jingwei Ma ◽  
Jian Yu ◽  
...  
Keyword(s):  
Composite Cathode ◽  
Oxidation Efficiency ◽  
Fenton System

Glucose-induced fabrication of Bi/α-FeC2O4·2H2O heterojunctions: a bifunctional catalyst with enhanced photocatalytic and Fenton oxidation efficiency

2019 ◽  
Vol 9 (10) ◽  
pp. 2543-2552 ◽  
Author(s):  
Kai Li ◽  
Yujun Liang ◽  
Jian Yang ◽  
Gui Yang ◽  
Hang Zhang ◽  
...  
Keyword(s):  
Carbon Source ◽  
Solvothermal Method ◽  
Bifunctional Catalyst ◽  
Fenton Oxidation ◽  
One Pot ◽  
Oxidation Efficiency

A series of novel bifunctional heterojunctions with outstanding photocatalytic and Fenton oxidation activities were synthesized via a one-pot solvothermal method in which glucose served as a reductant and carbon source.

Behavior of Oxidizing Substances on NO Gas Oxidation in Fenton System

2014 ◽  
Vol 1073-1076 ◽  
pp. 764-769
Author(s):  
Hai Qian Zhao ◽  
Ji Hui Gao ◽  
Zhong Hua Wang ◽  
Shao Hua Wu
Keyword(s):  
Experimental Methods ◽  
No Oxidation ◽  
Generation Rate ◽  
Direct Oxidation ◽  
Rapid Decomposition ◽  
Oxidation Efficiency ◽  
Fenton System ◽  
Active Substances

There are variety of active substances in Fenton system, such as H2O2, HO2-, O2-·, ·OH and HO2·. In this paper, the oxidation of H2O2, HO2-, O2-·, ·OH and HO2· on NO gas was determined respectively with experimental methods. The results showed that direct oxidation of gaseous NO by H2O2, HO2- and O2-·was weak. ·OH and HO2· had strong oxidizing capacity on gaseous NO, especially ·OH. With the acceleration of ·OH and HO2· generation rate, the oxidizability of Fenton system on NO gas was stronger, but O2 generation rate also accelerated. Rapid decomposition of H2O2 is the premise to realize high NO oxidation efficiency using H2O2, but how to avoid the invalid decomposition of H2O2 is the key to increase use ratio of H2O2.

scholarly journals Degradation of Toxic Organic Contaminants by Graphene Cathode in an Electro‐Fenton System

10.5772/67492 ◽  
2017 ◽  
Author(s):  
Liu Shuan ◽  
Zhao Xia ◽  
Jiang Xin ◽  
Zhao Xiaorong ◽  
Pu Jibin ◽  
...  
Keyword(s):  
Organic Contaminants ◽  
Fenton System
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