Decolorisation of Textile Dyeing Effluents Using Advanced Oxidation Processes

Yonar, Taner

doi:10.5772/18908

Cited by 21 publications

(17 citation statements)

References 90 publications

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“…Higher production rates of hydroxyl radicals will be obtained by the addition of hydrogen peroxide to the aqueous O 3 solution at high pH conditions. Independence of peroxone process from any light source or UV delivers a certain benefits to this operation [44].…”

Section: Ozonationmentioning

confidence: 99%

“…The reversal mechanism importantly decreases the photocatalytic efficiency of a semiconductor. Main benefit of TiO 2 /UV process is low energy consumption thus sunlight can be utilized as a light source [44].…”

Section: Heterogeneous Photochemical Oxidation Processesmentioning

confidence: 99%

“…Due to the high absorption cross-section of water and quantum yields of water homolysis of 0.45-0.3 at stimulation wavelengths (between 140 and 185 nm) provide productive local concentrations of hydroxyl and hydrogen radicals. VUV photolysis is a new technique for water treatment and suggests the benefit to generate unusually high local concentrations of oxidative reactive intermediates without the addition of supplementary oxidant [44,54].…”

Section: Vacuum Uv (Vuv) Photolysismentioning

confidence: 99%

“…Many variables (temperature, pH, UV intensity, tubidity, lamp spectral characteristics, and pollutant type, etc.) affect the performance of the system [42,44].…”

Section: Ozone/uv (O 3 /Uv) Processmentioning

confidence: 99%

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Treatment of Antibiotics in Wastewater Using Advanced Oxidation Processes (AOPs)

Kurt¹,

Mert²,

Özengi̇n³

et al. 2017

Physico-Chemical Wastewater Treatment and Resource Recovery

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Antibiotics are nonbiodegradable, can survive at aquatic environments for long periods and they have a big potential bio-accumulation in the environment. They are extensively metabolized by humans, animals and plants. After metabolization, antibiotics or their metabolites are excreted into the aquatic environment. Removal of these compounds from the aquatic environment is feasible by different processes. But antibiotics are not treated in conventional wastewater treatment plants efficiently. During the last years studies with advanced oxidation processes (AOPs) for removal of these pharmaceuticals from waters has shown that they can be useful for removing them fully. Advanced oxidation processes (AOPs) can work as alternatives or complementary method in traditional wastewater treatment, and highly reactive free radicals, especially hydroxyl radicals (OH) generated via chemical (O 3 /H 2 O 2 ,O 3 /OH -), photochemical (UV/O 3 ,O 3 /H 2 O 2 ) reactions, serve as the main oxidant. This study presents an overview of the literature on antibiotics and their removal from water by advanced oxidation processes. It includes almost all types of antibiotics which are consumed by human and veterinary processes. It was found that most of the investigated advanced oxidation treatment processes for the oxidation of antibiotics in water are direct and indirect photolysis with the combinations of H 2 O 2 ,TiO 2 , ozone and Fenton's reagent.

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Section: Ozonationmentioning

confidence: 99%

Section: Heterogeneous Photochemical Oxidation Processesmentioning

confidence: 99%

Section: Vacuum Uv (Vuv) Photolysismentioning

confidence: 99%

“…Many variables (temperature, pH, UV intensity, tubidity, lamp spectral characteristics, and pollutant type, etc.) affect the performance of the system [42,44].…”

Section: Ozone/uv (O 3 /Uv) Processmentioning

confidence: 99%

See 2 more Smart Citations

Treatment of Antibiotics in Wastewater Using Advanced Oxidation Processes (AOPs)

Kurt¹,

Mert²,

Özengi̇n³

et al. 2017

Physico-Chemical Wastewater Treatment and Resource Recovery

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“…Research work has been carried out for the treatment of dye from wastewater using different technologies, e.g. chemical coagulation-flocculation (Riera-Torres et al, 2010), oxidation (Yonar, 2011), membrane-based separation processes (Amini et al, 2011), etc. These technologies have efficiency for remediation of dyes but initial and operational costs are very high.…”

Section: Introductionmentioning

confidence: 99%

Development of cobalt-doped alumina hybrids for adsorption of textile effluents

Parveen

Rafique

2017

Adsorption Science & Technology

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The discharge volume and composition of textile effluents gain scientific concern due to hazardous and biotoxic nature of azo dyes. Azo dyes are non-biodegradable due to its complex molecular structure and recalcitrant nature. Serious attempts have been made to synthesize and develop new materials to combat the environmental problems. The present study is designed for removal of azo dyes (Methyl orange, Congo red and Basic fuchsine) from synthetic aqueous solutions and real textile effluents. For this purpose, cobalt-doped alumina hybrids are synthesized and applied as adsorbents in batch experiment. Two different aluminium precursor (aluminium nitrate and spent aluminium foil) and glucose are mixed following sol-gel method to get hybrids. The synthesized hybrids are characterized for surface and bulk properties using Fourier transform infrared, scanning electron microscopy and energy dispersive X-ray techniques. The characterization of materials under Fourier transform infrared revealed that -OH (3487-3504 cm À1 ), C-H (2935-2985 cm À1 ), Al-O-C ($1380 cm À1 ), Al-O ($ 800 cm À1 ), Al-O-Al (659-669 cm À1 ) and Co-O (583-589 cm À1 ) groups participate in the binding of dyes onto the surface of hybrids. Amorphous shaped particles and elemental composition (carbon, aluminium and oxygen) are demonstrated in scanning electron microscopy-energy dispersive X-ray micrograph. Time-dependent batch experiments under identical experimental parameters showed 74% of basic fuchsine, 68% of methyl orange and 85% maximum removal of Congo red onto the surface of cobalt-doped alumina hybrids probably through ion exchange mechanism. The experimental data when treated with adsorption models and isotherms, pseudosecond-order kinetic and Freundlich isotherm are found to be best fitted. The present study accomplishes the successful synthesis of novel and efficient cobalt-doped alumina hybrids provides environmental friendly and economical alternative option to the commercial adsorbents for the treatment of textile effluents.

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