Advanced Oxidation Processes (AOPs) in Landfill Leachate Treatment

2019 ◽  
pp. 355-383
Author(s):  
Mohamad Anuar Kamaruddin
Keyword(s):  
Landfill Leachate ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Sanitary Landfill ◽  
Biological Degradation ◽  
High Concentration ◽  
Leachate Treatment ◽  
Oxidation Processes ◽  
Acceptable Method ◽  
High Concentrations

Sanitary landfilling is the most acceptable method to eliminate solid urban wastes. However, it is known that sanitary landfill generates large amount of heavily polluted leachate. High concentrations of recalcitrant organics make its degradation more complicated and high concentration of organic material can be toxic and reduce bioremediation process. Landfill leachate treatment by advanced oxidation processes (AOPs) have been intensively studied with high successful rate for removing refractory pollutants (biological degradation) from leachate. Fenton reaction which is one basic AOPs is based on the addition of hydrogen peroxide to the leachate in the presence of ferrous salt as a catalyst. Because of that, many improvement and development of new Fenton-based methods have been reported in the literature. This review discussed the application of Fenton and related processes in terms of wide application in landfill leachate treatment. The effects of various operating parameters and their optimum ranges for organics contaminant removed were also discussed.

scholarly journals The removal of organic compounds from landfill leachate using ozone-based advanced oxidation processes

2018 ◽  
Vol 45 ◽  
pp. 00046
Author(s):  
Jacek Leszczyński ◽  
Jolanta Walery Maria
Keyword(s):  
Hydrogen Peroxide ◽  
Organic Compounds ◽  
Removal Efficiency ◽  
Landfill Leachate ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Uv Absorbance ◽  
Leachate Treatment ◽  
Oxidation Processes ◽  
Ozone Dose

In this study, the application of ozonation and ozonation with hydrogen peroxide processes for landfill leachate treatment was investigated. The effluents were characterized by COD 710 mgO2/dm3 and BOD5 72 mg O2/dm3. According to the adopted indicators, the determined BOD/COD ratio of 0.1 in raw leachates indicates a stabilized landfill. Ozone was applied at doses of 0.15 - 0.6 gO3/dm3, and hydrogen peroxide at such doses to keep the weight ratios of H2O2/O3 0.4 - 1.6. The maximum COD and UV absorbance removal was respectively 29% and 51% by applying a high ozone dose of 0.6 gO3/dm3. After oxidation, the ratio of BOD/COD was increased from 0.1 up to 0.3. It has been shown that by using hydrogen peroxide in ozonation, organic compounds expressed as COD can be efficiently removed from the effluents. The best conditions for the H2O2/O3 process were obtained with a H2O2/O3 ratio of 0.8 and ozone dose of 0.6 gO3/dm3. Under these conditions, the removal efficiency of COD was 46%.

scholarly journals Landfill Leachate Treatment Using Coupled, Sequential Coagulation-flocculation and Advanced Oxidation Processes

2017 ◽  
Vol 3 (4) ◽  
pp. 526-537
Author(s):  
José L. Álvarez Cruz ◽  
◽  
Karla E. Campos Díaz ◽  
Erick R. Bandala ◽  
Felipe López Sánchez ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Leachate Treatment ◽  
Oxidation Processes

Advanced Oxidation Processes: Process Mechanisms, Affecting Parameters and Landfill Leachate Treatment

2016 ◽  
Vol 88 (11) ◽  
pp. 2047-2058 ◽  
Author(s):  
Su‐Huan Kow ◽  
Muhammad Ridwan Fahmi ◽  
Che Zulzikrami Azner Abidin ◽  
Ong Soon‐An
Keyword(s):  
Landfill Leachate ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Leachate Treatment ◽  
Oxidation Processes

scholarly journals Removal of Organic Matter from Landfill Leachate by Advanced Oxidation Processes: A Review

2010 ◽  
Vol 2010 ◽  
pp. 1-10 ◽  
Author(s):  
Wei Li ◽  
Qixing Zhou ◽  
Tao Hua
Keyword(s):  
Landfill Leachate ◽  
Advanced Oxidation Processes ◽  
Oxygen Demand ◽  
Advanced Oxidation ◽  
Cost Effective ◽  
Sanitary Landfill ◽  
Treatment Efficiency ◽  
Municipal Solid Wastes ◽  
Mass Transfer Limitation ◽  
Oxidation Processes

In most countries, sanitary landfill is nowadays the most common way to eliminate municipal solid wastes (MSWs). However, sanitary landfill generates large quantity of heavily polluted leachate, which can induce ecological risk and potential hazards towards public health and ecosystems. The application of advanced oxidation processes (AOPs) including ozone-based oxidation, Fenton oxidation, electrochemical oxidation, and other AOPs to treatment of landfill leachate was reviewed. The treatment efficiency in term of chemical oxygen demand (COD) of various AOPs was presented. Advantages and drawbacks of various AOPs were discussed. Among the AOPs reviewed, Fenton process should be the best choice, not only because it can achieve about 49~89% of COD removal with COD ranging from 837 to 8894 mg/L, but also because the process is cost-effective and simple in technological aspect, there is no mass transfer limitation (homogeneous nature) and both iron and hydrogen peroxide are nontoxic.

Sign in / Sign up

Export Citation Format

Share Document