Rapid decolorization and mineralization of simulated textile wastewater in a heterogeneous Fenton like system with/without external energy

Zhou, Tao; Lü, Xiaohua; Wang, Jia; Wong, Fook-Sin; Li, Yaozhong

doi:10.1016/j.jhazmat.2008.09.100

Cited by 81 publications

(31 citation statements)

References 25 publications

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“…US was used also with a simulated solar radiation in photo-Fenton process instead of UV radiation mineralizing a recalcitrant model pharmaceutical ibuprofen effectively (Méndez-Arriaga et al 2009). A novel Fenton-like system where Fe 0 was used with air bubbling showed that US as an external energy improves the treatment efficiency remarkably when treating simulated textile wastewater (Zhou et al 2009). However, with UV radiation as an external energy, the treatment efficiency was similar to the experiment with only Fe 0 and air bubbling.…”

Section: Methods Enhancements and Integrationsmentioning

confidence: 99%

Recent developments in photochemical and chemical AOPs in water treatment: a mini-review

Vilhunen

Sillanpää

2010

Rev Environ Sci Biotechnol

126

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Photochemical and chemical oxidation methods, belonging to a wide group of advanced oxidation processes (AOPs), are extensively studied but still under constant development. The aim of this study was to review the recent developments mainly in UV/H 2 O 2 process and Fenton's reactions. Ultraviolet (UV) radiation is an essential factor in photochemical oxidation. In the development of UV radiation sources the energy efficiency and the use of toxicant free materials have become major objectives. Also the emitted wavelength plays a significant role. Besides, there are alternatives for UV radiation sources, such as radio frequency (RF) plasmas, which can operate in water without additional chemicals. A remarkable development in the field of chemical oxidation has been novel catalyst materials for Fenton's reaction enabling the efficient reaction in neutral or almost neutral conditions, instead of pH below 3. In addition, varieties of method integrations, e.g., combinations of AOPs or AOPs integrated to biological processes, and other enhancements such as combining ultrasound (US) with AOP have led to improved water treatment efficiencies.

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Section: Methods Enhancements and Integrationsmentioning

confidence: 99%

Recent developments in photochemical and chemical AOPs in water treatment: a mini-review

Vilhunen

Sillanpää

2010

Rev Environ Sci Biotechnol

126

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“…A final wastewater with a COD below 250 mg O 2 L −1 was achieved using the combination of a solar-photo-Fenton reaction with a biological process, which required a photo-treatment of 0. In an experiment [66],where the effect of ultrasound(US) and UV energies introduced into the Fenton like system were compared, 3 h after reaction, the removal rates of RB5, EDTA for, Total Organic Carbon(TOC), and Chemical Oxygen Demand (COD) were 100%, 96.5%, 68.6% and 92.2%, respectively. US showed a significant synergistic effect on the degradation and mineralization of both RB5 and EDTA, while UV did not achieve any improvement.…”

Section: Hydrogen Peroxide (H 2 O 2 )mentioning

confidence: 99%

Textile Waste Water and the advanced Oxidative Treatment Process, an Overview

Kehinde¹,

Aziz²

2014

IJIRSET

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Sustainability of the environment has become a focus; hence the need for improvement and monitoring of textile waste water discharges, for which major concern is color. Color in textile dyeing and finishing effluents is as a result of large amounts of dye stuffs left during the dyeing stages and inefficient dyeing processes often resulting in unfixed forms. Waste water from Textile and dyeing industries contain many pollutants, making it high in organic and inorganic chemical content, total organic carbon (TOC), chemical oxygen demand (COD), and especially, strong color. It is thus difficult to be degraded by the conventional methods; hence the use of the advanced oxidation processes (AOPs). The advanced oxidative process is certainly not a very new treatment method as it has been studied and used extensively; however, hope remains for possible improvement, hence this review. AOPs are being researched more with a view to improve on the treatability of effluents and the hope to use the method for the complete mineralization of dyes. Although they are very effective in complete mineralization of pollutants, AOPs may be very expensive when used solely.

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“…The conventional physicochemical processes for removing pollutants in dyeing wastewater contain adsorption, flocculation, membrane separation and the advanced oxidation processes (AOPs) which includes catalytic ozonation, Fenton oxidation, photocatalysis, etc [6]. Among these methods, the AOPs is mainly used for oxidizing and decomposing refractory organic pollutants by generating oxidative free radicals (hydroxyl radicals) in the reaction process [7].…”

Section: Introductionmentioning

confidence: 99%

Adsorption and catalytic ozonation of organic pollutants from bio-treated dyeing wastewater

Zhang¹,

Li²,

Liu³

et al. 2017

Proceedings of the 2017 6th International Conference on Energy and Environmental Protection (ICEEP 2017)

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Abstract. Adsorption performance of catalysts and catalytic ozonation of organic pollutants from bio-treated dyeing wastewater were investigated. Among various catalysts, the granular activated carbon (GAC) showed the better adsorption performance for removal of COD from dyeing wastewater, and the adsorption capacity was 2.1 mgCOD/gGAC. In addition, Mn@GAC composite catalyst was prepared by an impregnation method and used for catalytic ozonation.The XPS results showed that Mn was located onto GAC surface in the form of MnO 2 .The catalytic ozonation for COD removal efficiency was 41.7% with Mn@GAC. Therefore, the Mn@GAC catalytic ozonation is feasible for removal of the refractory organic pollutants from the dyeing wastewater.

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Rapid decolorization and mineralization of simulated textile wastewater in a heterogeneous Fenton like system with/without external energy

Cited by 81 publications

References 25 publications

Recent developments in photochemical and chemical AOPs in water treatment: a mini-review

Recent developments in photochemical and chemical AOPs in water treatment: a mini-review

Textile Waste Water and the advanced Oxidative Treatment Process, an Overview

Adsorption and catalytic ozonation of organic pollutants from bio-treated dyeing wastewater

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