Evaluation of biodegradability and oxidation degree of hospital wastewater using photo-Fenton process as the pretreatment method

Kajitvichyanukul, Puangrat; Suntronvipart, Nattapol

doi:10.1016/j.jhazmat.2006.05.064

Cited by 111 publications

(50 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…(2), of the photo-treated water and the COD/DOC ratio were determined in photo-treated wastewater. Both are considered indirect measure- ments of probable biodegradability [10,11].…”

Section: Photo-fenton Stagementioning

confidence: 99%

“…Although few studies combine AOPs with biological methods to treat wastewater [10,11], these methods to treat real wastewater polluted with pesticides have not been reported yet, even though some authors have reported studies carried out in water spiked with pesticides [12][13][14]. In this work, we implemented a hybrid-photocatalytic-biological system that combines the solar photo-Fenton process with a fixed biomass system for the treatment of wastewater coming from sugarcane cultivations with high-pesticide content.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Decontamination of industrial wastewater from sugarcane crops by combining solar photo-Fenton and biological treatments

Mendoza-Marín

Osorio

Benítez

2010

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…(2), of the photo-treated water and the COD/DOC ratio were determined in photo-treated wastewater. Both are considered indirect measure- ments of probable biodegradability [10,11].…”

Section: Photo-fenton Stagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Decontamination of industrial wastewater from sugarcane crops by combining solar photo-Fenton and biological treatments

Mendoza-Marín

Osorio

Benítez

2010

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…Wastewaters are accepted as the main source of these pollutants which affect environment adversely. They may contain heavy metals, radioactive and toxic substances and pharmaceuticals at high level (Gupta et al, 2009;Kajitvichyanukul and Suntronvipart, 2006). However, analysis and treatment technologies of wastewaters are inadequate.…”

Section: Introductionmentioning

confidence: 99%

“…They contain pharmaceuticals, heavy metals, radioactive and toxic substances etc. highly (Gupta et al, 2009;Kajitvichyanukul and Suntronvipart, 2006). They are generally treated with centralized domestic wastewater treatment systems without pretreatment processes (Santos et al, 2013;Verlicchi et al, 2010;Thomas et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Treatability Studies of Hospital Wastewaters with AOPs by Taguchi’s Experimental Design

2017

Global NEST Journal

View full text Add to dashboard Cite

In this study, it was studied various advanced oxidation treatment processes; Fenton, UV/H2O2, UV/O3/H2O2 for treatability of hospital wastewaters containing antibiotics (cephalosporines). Taguchi's L25 orthogonal array design was applied to design of advanced oxidation processes, for simplification of the analysis and calculations. 95,7%, 90,65%, 91,8% COD and 55,86%, 60,83%, 70,8% TOC removal efficiencies were obtained under the best operation conditions for UV/H2O2, UV/O3/H2O2 and Fenton processes, respectively. According to the ANOVA results, pH was of great importance in COD removal for Fenton. For the UV/H2O2 processes, H2O2 has significance in COD and TOC removals. As for the O3/UV/H2O2 processes, O3/UV reaction time was found as an important parameter effecting the removal rates. Also, cephalosporine antibiotic active compounds (cefradine and cefaclor) were degraded completely within minutes for all of the processes. Taguchi's Method was found useful for the environmental applications and simplifications of advanced oxidation processes for treatment of hospital wastewaters and calculations.

show abstract

“…These processes have been proposed as a potential alternative approach for the treatment of bio-recalcitrant organic pollutants [15] due to their ability to convert contaminants into less harmful chemicals. Consequently, to increase the treatment efficiency, they are usually combined with biological processes [16,17].…”

Section: Introductionmentioning

confidence: 99%

Toxic effect of H₂O₂in H₂O₂/UV, photo-Fenton and heterogeneous photocatalysis (TiO₂/H₂O₂/UV) systems to treat textile wastewater

López-López

Purswani

Martín-Pascual

et al. 2014

Desalination and Water Treatment

View full text Add to dashboard Cite

UV) processes for the treatment of a highly polluted coloured wastewater was analysed. The experiments were carried out with different H 2 O 2 concentrations (0.25, 0.5, 1, 2 and 5 g/L). The toxic properties of different H 2 O 2 concentrations in textile wastewater were tested by the use of a Microtox bioassay with Vibrio fischeri. The efficiency of the process was checked by assessing the physicochemical parameters, total organic carbon (TOC) and colour. The use of TiO 2 as a catalyst with UV photolysis was the most effective method to remove toxins, organic material and colour using the five concentrations of H 2 O 2 tested. By using 5 g/L of H 2 O 2 , 94% TOC removal was achieved. In relation to colour removal, this was greater than 99% with 5 g/L of H 2 O 2 in all three processes. The use of a catalyst allowed us to reduce the hydraulic retention time of the process to 30 min with Fe 2+ and 45 min with TiO 2. Controlling the amount of H 2 O 2 used as the oxidant in an advanced oxidation process (AOP) is important since it was found to increase the toxicity of the influent with the addition of H 2 O 2 by 4.99 ± 1.48%, 27.4 ± 3.24%, 39.16 ± 5.64%, 53.40 ± 4.15% and 59.39 ± 4.67% with 0.25, 0.5, 1, 2 and 5 g/L H 2 O 2 , respectively. Therefore, under the studied conditions, an H 2 O 2 concentration greater than 1 g/L is not recommended for an AOP in order to avoid an excess of H 2 O 2 in the effluent.

show abstract

Evaluation of biodegradability and oxidation degree of hospital wastewater using photo-Fenton process as the pretreatment method

Cited by 111 publications

References 38 publications

Decontamination of industrial wastewater from sugarcane crops by combining solar photo-Fenton and biological treatments

Decontamination of industrial wastewater from sugarcane crops by combining solar photo-Fenton and biological treatments

Treatability Studies of Hospital Wastewaters with AOPs by Taguchi’s Experimental Design

Toxic effect of H₂O₂in H₂O₂/UV, photo-Fenton and heterogeneous photocatalysis (TiO₂/H₂O₂/UV) systems to treat textile wastewater

Contact Info

Product

Resources

About

Evaluation of biodegradability and oxidation degree of hospital wastewater using photo-Fenton process as the pretreatment method

Cited by 111 publications

References 38 publications

Decontamination of industrial wastewater from sugarcane crops by combining solar photo-Fenton and biological treatments

Decontamination of industrial wastewater from sugarcane crops by combining solar photo-Fenton and biological treatments

Treatability Studies of Hospital Wastewaters with AOPs by Taguchi’s Experimental Design

Toxic effect of H2O2in H2O2/UV, photo-Fenton and heterogeneous photocatalysis (TiO2/H2O2/UV) systems to treat textile wastewater

Contact Info

Product

Resources

About

Toxic effect of H₂O₂in H₂O₂/UV, photo-Fenton and heterogeneous photocatalysis (TiO₂/H₂O₂/UV) systems to treat textile wastewater