Oxidative Pretreatment of Fresh and Mature Landfill Leachate
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A. Žgajnar Gotvajn
,
J. Zagorc-Končan
Abstract
The aim of our research was to evaluate treatment efficiency of Fenton’s process and ozonation for the treatment of two landfill leachates (fresh and mature), both resulting from municipal waste disposal. Both samples had high organic load (COD of the fresh and mature landfill leachate were 2700 and 490 mg·L-1, respectively), high toxicity and low biodegradability (BOD5/COD bellow 0.5). These were the reasons why oxidative treatment has been proposed. The first choice was Fenton´s treatment, due to its fast reaction rate. It was optimised in 250 mL reactor using different Fe2+ (0.3/1.5 M) and H2O2 (1.0/3.0 M) concentrations and ratios to achieve the best performance. Maximal organics removal reached more than 50% according to COD removal. Efficiency of treatment was confirmed by biodegradability and toxicity testing. The second set of oxidation experiments employed ozonation. The efficiency of initial organics removal with ozone was about 70% for mature leachate, while in the case of fresh leachate only 41% of COD was removed. No significant improvement of the biodegradability of the landfill leachates was achieved using this treatment procedure.
© 2016 by Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- Synthesis of TiO2/Au Nanocomposites via Sol-Gel Process for Photooxidation of Methanol
- Design of CeyCoxTi (1-x) O3+δ Perovskite for Photocatalysis: A Statistical Study
- Electro-Fenton Treatment of TNT in Aqueous Media in Presence of Cyclodextrin. Application to Ex-situ Treatment of Contaminated Soil
- A Quantum Mechanical Approach to TiO2 Photocatalysis
- Removal of Color Compounds from Recycled Water Using Combined Activated Carbon Adsorption and AOP Decomposition
- Preparation of Co-doped TiO2 for Photocatalytic Degradation of NOx in Air under Visible Light
- Depletion of Several Antibiotics Used in Industrial Process Using Immobilized TiO2
- Oxidative Pretreatment of Fresh and Mature Landfill Leachate
- Titanium Dioxide onto Polyethylene for Water Decontamination
- Application of Photocatalysis for the Removal of Natural Organic Matter in Simulated Surface and Ground Waters
- Photocatalytic Treatment of A Dye Polluted Industrial Effluent With A Solar Pilot-Scale CPC Reactor
- Evaluation of the Algaecide Activity of Titanium Dioxide on Autoclaved Aerated Concrete
- Degradation of 4-n-nonylphenol in Water by 20 kHz Ultrasound
- Integration of Photocatalysis with Ultrafiltration or Membrane Distillation for Removal of Azo Dye Direct Green 99 from Water
- Binder Effect on Photocatalytic Performance of TiO2 Solution Coating Layers
- Rhodamine B Discolouration on TiO2 in the Cement Environment: A Look at Fundamental Aspects of the Self-cleaning Effect in Concretes
- Effects of Inorganic Anions and Humic Acid on the Photocatalytic and Ozone Oxidation of Oxytetracycline in Aqueous Solution
