Effect of Ultraviolet Light on the Efficiency of Nano Photo-Catalyst (UV/ CNTs/TiO2) Composite in Removing MTBE from Contaminated Water

Tawabini, Bassam; Atieh, Muataz Ali; Mohyeddin, M.

doi:10.7763/ijesd.2013.v4.324

Cited by 5 publications

(7 citation statements)

References 9 publications

(9 reference statements)

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“…Similar behaviours were obtained in all experiments realized in this work. These results are similar to that reported by other authors which indicate UV oxidation allows sudden decomposition of toxic substances as nitrosodimetylamine (NDMA), hydrazine, 1,4-dioxane and methylthrethylbutaneethyl (MTBE) [24,25]. (1) Figure 2 shows the behaviour of normalized values of TC, TOC and TN versus time in both wastewaters (M5 and M6).…”

Section: Direct Uv-light Effect In Wastewaterssupporting

confidence: 88%

Treatment of Olive Oil Mill Wastewater by UV-Light and UV/H2O2 System

Hodaifa¹

2018

Int. J. Green Technol.

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Olive oil mills generates large volumes of wastewaters (OMW). The absence of legislation, which manages and obligates the treatment of OMW has led to the creation of large build-evaporation ponds as a solution for this environmental problem. The function of these ponds is the evaporation of wastewater during summer months. However, evaporation isn't enough to eliminate all wastewater in the rafts and this fact allows the generation of a great volume of concentrate wastewater with high organic load (COD = 0.5-38 g O2/L). The environmental impact produced by the accumulation of polluted wastewater demands the design of processes for OMW treatment. In this sense, the influence of ultraviolet light (UV) and the combined system of UV/H2O2, in the degradation of organic matter of OMW, were studied. UV-light application at a short time (<30 min) implies a removal values in COD = 15-22%, total carbon (TC), total organic carbon (TOC) and total nitrogen (TN) in the range 34% to 43%. The turbidity elimination was registered in the range 68% to 70%. In the case of combined UV/H2O2 system the removal percentages were 40-48% for COD, 39.4-51.9% for TC, 33.0-48.0% for TOC, 37.0-53.1% for TN, and 66.8-93.4% for turbidity.

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Section: Direct Uv-light Effect In Wastewaterssupporting

confidence: 88%

Treatment of Olive Oil Mill Wastewater by UV-Light and UV/H2O2 System

Hodaifa¹

2018

Int. J. Green Technol.

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“…The experimental data used in this study were collected from nine (9) different literature sources listed in Table 1 with their details. In the experiments, synthetic MTBE contaminated water was prepared from 97 to 99.9% pure MTBE and, treated with specific doses of anatase TiO 2 in a batch [25,28,30] or slurry photocatalytic reactor system equipped with UV lamps [24,29]. The pH of (9)…”

Section: Sources and Description Of The Datamentioning

confidence: 99%

“…The degradation reaction was allowed to run for a specified time from zero to a maximum of 360 min (see Table 1). Initial and final MTBE concentrations in the solution were analyzed using gas chromatography (GC) equipped with either a flame ionization detector (FID) [28,29,50] or mass spectrometer (MS) [25,27,30]. During the analysis, samples are injected on to the GC via headspace [26,28,30,31], purge and trap [24,25] or solid-phase micro extraction (SPME) technique [27].…”

Section: Sources and Description Of The Datamentioning

confidence: 99%

“…It is important to point out that photocatalytic oxidation has a high reaction rate which is suitable for better treatment of MTBE. Several important studies have been undertaken towards photocatalytic decomposition of MTBE using TiO 2 /UV [24][25][26][27][28][29][30]. It is remarkable to highlight that these referenced studies revealed that a host of reaction conditions (such as catalyst dose, solution pH, initial pollutant concentration, irradiation UV wavelength and treatment time) influence the efficiency of MTBE degradation through the photocatalytic process.…”

Section: Introductionmentioning

confidence: 99%

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Modeling the efficiency of TiO2 photocatalytic degradation of MTBE in contaminated water: a support vector regression approach

2019

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Methyl tert-Butyl Ether (MTBE) is one of the common environmental contaminants that pose severe risks to human health and the environment. Due to the detrimental effects of MTBE, many efforts have been devoted towards decontamination of wastewater containing MTBE. Most of the reports on the treatment of MTBE are experimental based, which requires studying the effect of several factors such as dosage of the photocatalyst, pH of the medium, the initial concentration of contaminant and the contact time on degradation efficiency in MTBE contaminated waters. Although, this approach is highly dependable and often leads to new insights. However, because the degradation efficiency is influenced by multiple factors, performing experiments to investigate the effect of these factors often increases the experimental burden, thus requiring more time and materials consumption to achieve desirable results. Herein, we propose a computational intelligent strategy to mitigate these challenges. In this contribution, the degradation efficiencies of MTBE in the presence of TiO 2 /UV were modeled under various experimental conditions using the support vector regression model. The model was built using experimental data comprising of inputs such as TiO 2 dose, initial MTBE concentration, UV wavelength and contact time. Remarkably, the developed model exhibits significant accuracy as determined from the values of correlation coefficient (98.27%) and root means square error (5.53). In addition, it was determined that the achievable optimum conditions for degradation of 0.5-100 ppm MTBE-contaminated water were 2.4 g/L of TiO 2 dose with UV radiation, a solution pH of 3 and treatment time of 2 h. This study will be useful in the experimental design of treatment for MTBE, consequently reducing the time spent on running experiments and at the same time ensuring efficient use of resources for treatment of MTBE contaminated water.

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“…The MTBE distribution in the aqueous medium has raised concern about the compound's occurrence in drinking water, due to its low taste and odor threshold (20-40 μg/L, according to EPA's drinking water advisory) and the potential impact on human health. Different types of advanced oxidation processes (such as catalytic ozonation, photooxidation (UV/H 2 O 2 ) and (UV/TiO 2 )) are effective for MTBE removal from aqueous phase [5][6][7]. However, byproducts of the oxidation processes may remain in the treated water requiring a further removal step such as adsorption [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and application of nano-perfluorooctyl alumina for adsorption of methyl tertiary-butyl ether (MTBE) from aqueous medium

Dehghani

Ebadi

Shafiei

et al. 2015

Desalination and Water Treatment

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In this work, adsorptions of Methyl tertiary-butyl ether (MTBE) onto two novel adsorbents, i.e. nano-perfluorooctyl alumina was prepared using nano-γ-alumina (nano-PFOAL G ) and nano-boehmite (nano-PFOAL B ) as the supports were investigated. The surface areas of the nano-γ-alumina and nano-boehmite were determined as 265.7 and 319.5 m 2 /g, respectively. The equilibrium adsorption behavior of the nanoadsorbents was studied for adsorption of (MTBE) in a wide range (100-1,750 mg/L) of aqueous phase concentrations. The maximum adsorption capacities were 46.0 and 44.4 mg MTBE/g adsorbent for nano-PFOAL G and nano-PFOAL B , respectively. The Freundlich, Langmuir, and Brunauer-Emmet-Teller (BET) isotherms were used for modeling of MTBE adsorption on nano-PFOAL G and nano-PFOAL B from aqueous medium. The experimental results of MTBE adsorption on the surface of nano-PFOAL adsorbents obeyed a type IV van der Waals adsorption trend, which can be modeled best by the BET isotherm up to pore filling concentration.

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Effect of Ultraviolet Light on the Efficiency of Nano Photo-Catalyst (UV/ CNTs/TiO2) Composite in Removing MTBE from Contaminated Water

Cited by 5 publications

References 9 publications

Treatment of Olive Oil Mill Wastewater by UV-Light and UV/H2O2 System

Treatment of Olive Oil Mill Wastewater by UV-Light and UV/H2O2 System

Modeling the efficiency of TiO2 photocatalytic degradation of MTBE in contaminated water: a support vector regression approach

Synthesis, characterization, and application of nano-perfluorooctyl alumina for adsorption of methyl tertiary-butyl ether (MTBE) from aqueous medium

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