Post-treatment of refinery wastewater effluent using a combination of AOPs (H2O2 photolysis and catalytic wet peroxide oxidation) for possible water reuse. Comparison of low and medium pressure lamp performance

Rueda-Márquez, Juan José; Levchuk, Irina; Salcedo, I.; Acevedo-Merino, Asunción; Manzano, Manuel A.

doi:10.1016/j.watres.2015.12.051

Cited by 35 publications

(14 citation statements)

References 27 publications

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“…The initial concentration of H 2 O 2 used for CWPO applied as post-treatment step for industrial and urban wastewater effluents (in reviewed papers) varied between 79.3 mg/L and 3.4 g/L. It should be mentioned that the high efficiency of H 2 O 2 consumption is one of the main advantages of CWPO [49], so, after the post-treatment of industrial wastewater effluents by CWPO using GAC, full consumption of H 2 O 2 was reported [42,43,66,67]. Interestingly, very short contact time (between 2.3 and 6 min) was sufficient for the significant elimination of organic pollutants and complete decomposition of H 2 O 2 [42,43,66,67].…”

Section: H 2 O 2 Concentration and Toxicitymentioning

confidence: 99%

“…It should be mentioned that the high efficiency of H 2 O 2 consumption is one of the main advantages of CWPO [49], so, after the post-treatment of industrial wastewater effluents by CWPO using GAC, full consumption of H 2 O 2 was reported [42,43,66,67]. Interestingly, very short contact time (between 2.3 and 6 min) was sufficient for the significant elimination of organic pollutants and complete decomposition of H 2 O 2 [42,43,66,67]. Complete consumption of hydrogen peroxide during CWPO is extremely beneficial from a practical point of view due to the absence of residual hydrogen peroxide in wastewater effluent, so the possible toxicity of the final effluent (when CWPO is applied as post-treatment step) might be avoided.…”

Section: H 2 O 2 Concentration and Toxicitymentioning

confidence: 99%

“…Assessment of the toxicity of industrial wastewater effluents after CWPO was performed using acute toxicity bioassays with Vibrio fischeri [67], Sparus aurata [43], and Paracentrotus lividus (fertilisation and embryo-larval development) [42]. It is worth noting that H 2 O 2 was not removed from the wastewater prior to toxicity assessment in any of the reviewed studies that were devoted to CWPO post-treatment of wastewater, so the synergetic effect of pollutants and H 2 O 2 in wastewaters was estimated.…”

Section: H 2 O 2 Concentration and Toxicitymentioning

confidence: 99%

“…For instance, Rueda-Márquez et al [67] reported that the toxicity of refinery wastewater effluent after CWPO decreased enormously according to the most sensitive tested species (EC 50 , P. lividus embryo-larval development). Based on a toxicity assessment of industrial wastewater effluents that were treated with CWPO, the effluents were recommended for safe discharge [42,43,67]. As far as authors are aware, there were no reports of toxicity assessments during the CWPO of real wastewater effluent when applied as a post-treatment step.…”

Section: H 2 O 2 Concentration and Toxicitymentioning

confidence: 99%

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Application of Catalytic Wet Peroxide Oxidation for Industrial and Urban Wastewater Treatment: A Review

2018

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Catalytic wet peroxide oxidation (CWPO) is emerging as an advanced oxidation process (AOP) of significant promise, which is mainly due to its efficiency for the decomposition of recalcitrant organic compounds in industrial and urban wastewaters and relatively low operating costs. In current study, we have systemised and critically discussed the feasibility of CWPO for industrial and urban wastewater treatment. More specifically, types of catalysts the effect of pH, temperature, and hydrogen peroxide concentrations on the efficiency of CWPO were taken into consideration. The operating and maintenance costs of CWPO applied to wastewater treatment and toxicity assessment were also discussed. Knowledge gaps were identified and summarised. The main conclusions of this work are: (i) catalyst leaching and deactivation is one of the main problematic issues; (ii) majority of studies were performed in semi-batch and batch reactors, while continuous fixed bed reactors were not extensively studied for treatment of real wastewaters; (iii) toxicity of wastewaters treated by CWPO is of key importance for possible application, however it was not studied thoroughly; and, (iv) CWPO can be regarded as economically viable for wastewater treatment, especially when conducted at ambient temperature and natural pH of wastewater.

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Section: H 2 O 2 Concentration and Toxicitymentioning

confidence: 99%

Section: H 2 O 2 Concentration and Toxicitymentioning

confidence: 99%

Section: H 2 O 2 Concentration and Toxicitymentioning

confidence: 99%

Section: H 2 O 2 Concentration and Toxicitymentioning

confidence: 99%

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Application of Catalytic Wet Peroxide Oxidation for Industrial and Urban Wastewater Treatment: A Review

2018

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“…Hydroxyl radical (•OH) is produced to provide a high oxidation potential, which destroys organic molecules in wastewater [61]. To initialize this reaction, ultrasound, ozonation, photocatalysis and peroxide oxidation are used [62][63][64][65]. One of the most popular AOP methods is Fenton's reaction, based on using Fe 2+ in an acidic aqueous environment to produce hydroxyl radical [66][67][68].…”

Section: Post-treatmentmentioning

confidence: 99%

Pitfalls of Wastewater Treatment in Oil Refinery Enterprises in Kazakhstan—A System Approach

et al. 2019

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The present article is an assessment of wastewater treatment processes in the oil refinery sector in Kazakhstan by comparing relevant experience of developed and developing countries. The legislation in this sphere, the treatment methods, the discharge process and the effect on the environment were evaluated following international and national regulations. In our study, the wastewater systems in three factories in Kazakhstan were assessed. Results show that, even though the environmental regulation in Kazakhstan promotes the polluter pays principle and follows the World Health Organization (WHO) recommendations, the oil refinery plants in Kazakhstan still contain exceeding concentrations of pollutants in their effluents. One issue is that the local legislation allows disposal of wastewater to natural or artificial ponds as long as the concentrations of pollutants in effluents are less than the already existing concentrations in the pond. Consequently, the factories can use ponds with an initially high concentration of contaminants. The high initial concentration of pollutants in the pond water is due to wastewater discharged before the implementation of current environmental regulations. This issue in the current legislation leads to the situation where there is no incentive for efficient wastewater treatment. The national law also lacks regulations regarding which methodology should be used to assess the pollutants in the wastewater. Thus, the control by national environmental office for each enterprise is negotiated separately between the factory and the governmental body. This gives the factory a strong position to define the parameters assessing the effluents. This has led to none of the factories measuring, e.g., heavy metals in discharged wastewater. Total petroleum hydrocarbons (TPH) concentration in wastewater is often exceeded at each factory and there is no analysis done for different hydrocarbon fraction. To overcome the issues described in the present study, we strongly recommended a unified and transparent methodology for the country’s oil refinery industry to assess important pollutants in discharged wastewater.

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UV Induced Mutagenicity in Water: Causes, Detection, Identification and Prevention

Hofman‐Caris

2017

Advances in Experimental Medicine and Biology

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At first it seemed that UV processes for disinfection and advanced oxidation were "harmless", as they didn't involve the addition of "dangerous" chemicals nor seemed to result in the formation of toxic byproducts. However, recently it has become clear that also during UV processes mutagentic/genotoxic byproducts may be formed. It was found that these are nitrogen containing aromatic compounds, which are formed by the reaction of photolysis products of nitrate with (photolysis products of) natural organic matter. Now more has become clear on the formation process of these compounds, it is possible to limit or even prevent their formation during e.g. UV/HO processes. Besides, it appears to be possible to remove such byproducts by means of filtration processes. Thus, UV based processes can safely be applied in water treatment.

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Post-treatment of refinery wastewater effluent using a combination of AOPs (H2O2 photolysis and catalytic wet peroxide oxidation) for possible water reuse. Comparison of low and medium pressure lamp performance

Cited by 35 publications

References 27 publications

Application of Catalytic Wet Peroxide Oxidation for Industrial and Urban Wastewater Treatment: A Review

Application of Catalytic Wet Peroxide Oxidation for Industrial and Urban Wastewater Treatment: A Review

Pitfalls of Wastewater Treatment in Oil Refinery Enterprises in Kazakhstan—A System Approach

UV Induced Mutagenicity in Water: Causes, Detection, Identification and Prevention

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