Comparison of Photo-Fenton Treatment and Coupled Photo-Fenton and Biological Treatment for Detoxification of Pharmaceutical Industry Contaminants
-
Ana Zapata
Abstract
This paper compares the feasibility of two different treatment approaches, chemical oxidative treatment by the solar photo-Fenton method and a combined approach applying the solar photo-Fenton method as a pre-treatment for aerobic biological wastewater treatment. The targets are two biorecalcitrant substances used as synthesis intermediates in the pharmaceutical industry, 2-(2,4-dichlorophenyl)-2-(1H-imidazol-1-ylmethyl)-1,3-dioxolan-4-ylmethanol (CAS 84682-23-5) (DIDM) and 2-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)- 1,3-dioxolan-4-ylmethanol (CAS 67914-85-6) (DTDM). Solar photo-Fenton treatment was performed in Compound Parabolic Collector pilot-plants, and biological treatment in an immobilized biomass reactor pilot-plant. Analytical determinations included the measurement of dissolved organic carbon, chemical oxygen demand, inorganic compounds (chloride, ammonium, nitrate), formed during degradation, acute toxicity tests applying Vibrio Fischeri luminescence bacteria and the Zahn-Wellens biodegradability test. The synthetic wastewater contained 200 mg/L of each compound, an initial DOC of 200 mg/l and an initial COD of 700 mg/L. The target compounds proved to be susceptible to complete degradation and partial mineralization (95%) by photo-Fenton. Total elimination of both substances occurred after 74 minutes of illumination and required the consumption of 27.5 mM of hydrogen peroxide. Nevertheless, acute toxicity persisted practically to the end of the treatment, and biodegradability could only be slightly enhanced, never rendering the wastewater completely biodegradable at any stage of the chemical oxidative treatment. By Zahn-Wellens test DIDM and DTDM proved to be non-biodegradable and only samples pre-treated by photo-Fenton until achieving a DOC below 98 mg/L showed a significant degree of biodegradability (60% after 11 days of biotreatment). This particular behaviour contrasts with other substances that have been tested before and may be related to the refractory nature of the imidazole and triazole moieties in the molecular structure of DIDM and DTDM.
© 2016 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Glycerol Transformation Through Photocatalysis: A Possible Route to Value Added Chemicals
- Photocatalytic Degradation of Methylene Blue on Fixed Powder Layers: Which Limitations are to be Considered?
- Surface Modification of TiO2 with Ascorbic Acid for Heterogeneous Photocatalysis: Theory and Experiment
- Vacuum-UV- (VUV-) Photochemically Initiated Oxidation of Dimethylamine in the Gas Phase
- Metal-Oxide Photoassisted Degradation of Binary Systems of Cationic / Anionic Surfactants and their Components in Aqueous Dispersions
- Photochromic and Photocatalytic Inorganic-Organic Multilayer Films based on Polyoxometalates and Poly(ethylenimine)
- Biodegradation of Photo-Fenton Pre-Treated Solutions of Sulfamethoxazole by Aerobic Communities. Molecular Biology Techniques Applied to the Determination of Existing Strains
- Oxidation of Pesticides in Water by Fenton and Photo-Fenton Reactions
- Physicochemical Treatment of Three Chemotherapy Drugs: Irinotecan, Tamoxifen, and Cyclophosphamide
- Comparison of Photo-Fenton Treatment and Coupled Photo-Fenton and Biological Treatment for Detoxification of Pharmaceutical Industry Contaminants
- Integration of Environmental and Economic Performance of Processes. Case Study on Advanced Oxidation Processes for Wastewater Treatment
- Remediation of Water Contaminated with Pesticides by Indirect Electrochemical Oxidation Process Electro-Fenton
- Adsorption and Photocatalytic Degradation of Phthalic Acid on TiO2 and ZnO
- Treatment of Phenol, Formaldehyde and their Mixtures by Photocatalytic and Biological Methods
- Photoelectrocatalytic Activity of Electrosynthesised Tungsten Trioxide- Titanium Dioxide Bi-Layer Coatings for the Photooxidation of Organics
- Heterogeneous Photocatalytic Degradation of Acid Dyes in Aqueous TiO2 Suspensions: Kinetics and Toxicity
- Neural Networks and Genetic Algorithms Optimization of the Photocatalytic Degradation of Alcian Blue 8GX
- Super-Hydrophilic and Photocatalytic Properties of Ag-TiO2 Thin Films Prepared by Sol–Gel Technique
- Aerobic Bio-oxidation with Ozonation for Recalcitrant Wastewater Treatment
- Photochemical Reactivity of Iron(III)-Doped Ruthenium(II)-tris- Bipyridine/Titanium Dioxide Zeolite Y Photocatalysts at High Substrate Concentrations
- Effect of Contaminant Hydrophobicity in the Treatment of Contaminated Soils by Catalyzed H2O2 Propagations (Modified Fenton’s Reagent)
- Preparation of Photocatalytic Coatings Adapted to the Elimination of Airborne Pollutants: Influence of the Substrate on the Degradation Efficiency
- Ozonation of Landfill Leachates: Treatment Optimization by Factorial Design
- Ozone Transfer and Decomposition of Isopropyl Alcohol by H2O2/Ozone Process in a Rotating Packed Contactor
- Photocatalytic Destruction of Geosmin Using Novel Pelleted Titanium Dioxide
- Re-Utilization of Exhaustion Baths in Cotton-Dyeing Processes After Solar-Based Photo-Oxidative Treatments
- Advanced Oxidation of a Commercial Naphthalene Sulphonic Acid: Effects on Organic Carbon and Toxicity Removals
- Highly Photoactive Monodidisperse Titania Hollow Nanospheres
- Degradation of Phenylmercury Compounds by Heterogeneous Photocatalysis Over α-Fe2O3
Articles in the same Issue
- Glycerol Transformation Through Photocatalysis: A Possible Route to Value Added Chemicals
- Photocatalytic Degradation of Methylene Blue on Fixed Powder Layers: Which Limitations are to be Considered?
- Surface Modification of TiO2 with Ascorbic Acid for Heterogeneous Photocatalysis: Theory and Experiment
- Vacuum-UV- (VUV-) Photochemically Initiated Oxidation of Dimethylamine in the Gas Phase
- Metal-Oxide Photoassisted Degradation of Binary Systems of Cationic / Anionic Surfactants and their Components in Aqueous Dispersions
- Photochromic and Photocatalytic Inorganic-Organic Multilayer Films based on Polyoxometalates and Poly(ethylenimine)
- Biodegradation of Photo-Fenton Pre-Treated Solutions of Sulfamethoxazole by Aerobic Communities. Molecular Biology Techniques Applied to the Determination of Existing Strains
- Oxidation of Pesticides in Water by Fenton and Photo-Fenton Reactions
- Physicochemical Treatment of Three Chemotherapy Drugs: Irinotecan, Tamoxifen, and Cyclophosphamide
- Comparison of Photo-Fenton Treatment and Coupled Photo-Fenton and Biological Treatment for Detoxification of Pharmaceutical Industry Contaminants
- Integration of Environmental and Economic Performance of Processes. Case Study on Advanced Oxidation Processes for Wastewater Treatment
- Remediation of Water Contaminated with Pesticides by Indirect Electrochemical Oxidation Process Electro-Fenton
- Adsorption and Photocatalytic Degradation of Phthalic Acid on TiO2 and ZnO
- Treatment of Phenol, Formaldehyde and their Mixtures by Photocatalytic and Biological Methods
- Photoelectrocatalytic Activity of Electrosynthesised Tungsten Trioxide- Titanium Dioxide Bi-Layer Coatings for the Photooxidation of Organics
- Heterogeneous Photocatalytic Degradation of Acid Dyes in Aqueous TiO2 Suspensions: Kinetics and Toxicity
- Neural Networks and Genetic Algorithms Optimization of the Photocatalytic Degradation of Alcian Blue 8GX
- Super-Hydrophilic and Photocatalytic Properties of Ag-TiO2 Thin Films Prepared by Sol–Gel Technique
- Aerobic Bio-oxidation with Ozonation for Recalcitrant Wastewater Treatment
- Photochemical Reactivity of Iron(III)-Doped Ruthenium(II)-tris- Bipyridine/Titanium Dioxide Zeolite Y Photocatalysts at High Substrate Concentrations
- Effect of Contaminant Hydrophobicity in the Treatment of Contaminated Soils by Catalyzed H2O2 Propagations (Modified Fenton’s Reagent)
- Preparation of Photocatalytic Coatings Adapted to the Elimination of Airborne Pollutants: Influence of the Substrate on the Degradation Efficiency
- Ozonation of Landfill Leachates: Treatment Optimization by Factorial Design
- Ozone Transfer and Decomposition of Isopropyl Alcohol by H2O2/Ozone Process in a Rotating Packed Contactor
- Photocatalytic Destruction of Geosmin Using Novel Pelleted Titanium Dioxide
- Re-Utilization of Exhaustion Baths in Cotton-Dyeing Processes After Solar-Based Photo-Oxidative Treatments
- Advanced Oxidation of a Commercial Naphthalene Sulphonic Acid: Effects on Organic Carbon and Toxicity Removals
- Highly Photoactive Monodidisperse Titania Hollow Nanospheres
- Degradation of Phenylmercury Compounds by Heterogeneous Photocatalysis Over α-Fe2O3
