Removal of phenol from water using ozone

Turhan, Kadir; Uzman, Süheyla

doi:10.1016/j.desal.2007.09.012

Cited by 82 publications

(53 citation statements)

References 15 publications

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“…Conventional treatment methods for phenolcontaining wastewater are generally microbial degradation [2], adsorption on activated carbon [3], and chemical oxidation such as ozonation [4] and Fenton reaction [5]. Although these methods are able to show high phenol removal efficiencies, some common drawbacks have been encountered.…”

Section: Introductionmentioning

confidence: 99%

Comparison of two Agricultural Wastes for Phenol Removal Via Peroxidase-Catalyzed Enzymatic Approach

et al. 2016

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Abstract. Agricultural wastes of jicama and luffa skin peels were used as the source for peroxidase extraction. The extracted crude enzymes showed similar activities, 1.34U/mL and 1.22U/mL for jicama and luffa peroxidase respectively. These peroxidases were used to treat phenol under varying operating conditions of buffer pH, hydrogen peroxide concentration, enzyme volume and temperature. Jicama peroxidase demonstrated a phenol removal efficiency of approximately 90% at buffer pH 7, 1mM hydrogen peroxide using 1.5mL enzyme at 25 o C. Luffa peroxidase required a higher dosage of hydrogen peroxide, and exhibited a removal efficiency of 84% at 8mM with other operating conditions same as jicama peroxidase. Jicama peroxidase is sensitive to pH change and more susceptible to thermal denaturation. Luffa peroxidase showed a better stability in terms of temperature.

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Section: Introductionmentioning

confidence: 99%

Comparison of two Agricultural Wastes for Phenol Removal Via Peroxidase-Catalyzed Enzymatic Approach

et al. 2016

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“…Wastewater with high concentration of phenol is usually treated by an extraction process to reuse phenol. [2,3] In addition, some advanced technologies had been adopted to deal with wastewater with a low concentration of phenol, such as chemical processes, [4,5] ozonation, [5][6][7][8] ultrasonic processes, [9,10] fenton reaction, [11] compound oxidation process. [12,13] It is effective for ozone to sterilize, decrease chromaticity and smell, increase the biodegradability of refractory organics and improve the flocculent effect with its strong oxidation characteristics which is due to the high oxidation potential (2.08 V).…”

Section: Introductionmentioning

confidence: 99%

Degradation of Phenol in Wastewater with Ozone Produced by Self-design Ozone Generator

Wang

Zhong

et al. 2016

MATEC Web Conf.

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Abstract. The optimized tube's structure of the self-design ozone generator was made with the double dielectric inner electrode and small metal cones were embedded in the outside electrode. This ozone generator was used for the degradation of phenol in wastewater. The research was studied from ozone gas flow rate, reaction time, the initial pH and concentration of the phenol in wastewater. In addition, the article also discusses the reaction mechanism of ozone degraded the phenol in wastewater. The results illustrate that the ozone concentration of self-design ozone generator under the pure oxygen flux (1.0 L/min) were 7.06 mg/L, compared with the unoptimized ozone, the optimized ozone generator's efficiency was improved 56.89%; the phenol removal rate was increased as the initial pH increased in wastewater, when pH was 12, the phenol removal rate was 80.17%; GC-MS analysis was adopted to analyze and determine the phenol intermediates. The results illustrate that the major oxidation degradation products of phenol may be p-benzoquinone benzenequinone, 4-cyclopentene-1, 3-dione and diacetone alcohol.

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“…Phenol is lethal to fish at low concentrations (5-25 mg/L) and gives objectionable tastes to drinking water at far lower concentrations [6]. Even a concentration of 1 µg/L can render water unfit for use [3]. The 80/778/EC directive regulates the maximum concentration of phenol in drinking water is 0.5 µg/L [7].…”

mentioning

confidence: 99%

“…Therefore, it is usually taken as a model compound for wastewater treatment [9]. Current methods for removing phenolics from wastewaters include biological degradation, solvent extraction, adsorption and chemical oxidation [3,[10][11][12]. Biological treatment is often the most economical alternative method compared with other processing schemes and it is considered to be environmentally friendly.…”

mentioning

confidence: 99%

“…They are discharged into the aquatic environment by industries such as petroleum refineries, petrochemical industries, polymer industries, fiberglass plants, smelting and metallurgical operations, pharmaceutical, paint and dye industries [2][3][4]. Phenolic compounds are well known for high salinity, acidity, chemical oxygen demand (COD) and low biodegradability [3]. In addition, they have low volatilities and easily form azeotropes and eutectics [5].…”

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confidence: 99%

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Catalytic oxidation of phenol in wastewater — A new application of the amorphous Fe78Si9B13 alloy

Wang

Bian

2012

Chin. Sci. Bull.

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The amorphous Fe 78 Si 9 B 13 alloy was used as a heterogeneous Fenton catalyst in the process of phenol degradation. The influences of main operating parameters such as reaction temperature, catalyst amount, hydrogen peroxide dosage and initial pH of solution on phenol degradation rate were investigated. The maximum mineralization of phenol was achieved at 60°C, 6 g/L Fe 78 Si 9 B 13 , 0.31 mol/L hydrogen peroxide, with an initial pH of 2.5. More than 99% of phenol was completely removed under the optimum conditions within 10 min for a solution containing 1000 mg/L of phenol. Batch experiments for solutions containing phenol concentrations ranging from 50 to 2000 mg/L were investigated under the above conditions and the same excellent degradation rate was obtained. The Fe 78 Si 9 B 13 showed better catalytic activity than iron powder and Fe 2+. Addition of n-butannol (hydroxyl radical scavenger) decreased the degradation rate of phenol, which demonstrates that hydroxyl radicals were mainly responsible for the removal of phenol. We demonstrated that phenol may be degraded by hydroxyl radicals decomposed by hydrogen peroxide on the surface of Fe 78 Si 9 B 13 and illustrated the reaction mechanism for this process. This amorphous alloy exhibited high stability in recycling experiments and showed excellent reuse performance even after continuous operations of 8 cycles.phenol degradation, iron-based amorphous alloy, heterogeneous catalyst, Fenton reaction Citation:Wang P, Bian X F, Li Y X. Catalytic oxidation of phenol in wastewater-A new application of the amorphous Fe 78 Si 9 B 13 alloy.

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Removal of phenol from water using ozone

Cited by 82 publications

References 15 publications

Comparison of two Agricultural Wastes for Phenol Removal Via Peroxidase-Catalyzed Enzymatic Approach

Comparison of two Agricultural Wastes for Phenol Removal Via Peroxidase-Catalyzed Enzymatic Approach

Degradation of Phenol in Wastewater with Ozone Produced by Self-design Ozone Generator

Catalytic oxidation of phenol in wastewater — A new application of the amorphous Fe78Si9B13 alloy

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