An insight into the effective advanced oxidation process for treatment of simulated textile dye waste water

Guin, Jhimli Paul; Naik, D.B.; Bhardwaj, Y.K.; Varshney, Lalit

doi:10.1039/c4ra00884g

Cited by 32 publications

(34 citation statements)

References 33 publications

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“…12 However, some of these techniques require a low pollutant concentration for efficient pollutant removal or require the transportation, storage and handling of hazardous reactants. [15][16][17][18][19] The performance of this process is based on the electrochemical in situ generation of H 2 O 2 from the continuous aeration on the cathode (eqn (1)). 14 Electro-Fenton has been reported as the most economic and promising EAOP for the treatment of a wide variety of organic pollutants.…”

Section: Introductionmentioning

confidence: 99%

Effective heterogeneous electro-Fenton process of m-cresol with iron loaded actived carbon

et al. 2015

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The degradation of m-cresol (MC) has been investigated by a heterogeneous electro-Fenton process using iron loaded activated carbon (Fe-AC) as the heterogeneous electro-Fenton catalyst. Experimental results demonstrated that MC was effectively removed through an electro-Fenton process. Calculated TOC removal and overall energy consumption showed that the use of a low iron concentration (28 mg L À1 ) increases the efficiency of the process. The reactions followed a pseudo-first order kinetic equation and kinetic coefficients confirm that the MC reduction, when it is alone, is faster than in the presence of a similar compound, tert-butylhydroquinone (TBHQ) (from 0.0935 to 0.0692 min À1 ); therefore TBHQ exerts an antioxidative protection effect. In all cases, it is concluded that heterogeneous electro-Fenton treatment with Fe-AC follows a two-step process: adsorption and oxidation; allowing removal rates higher than in the literature. In addition, the reusability of this catalyst was demonstrated by operating it in continuous mode. Finally, LC-MS analysis allowed the development of a plausible degradation route.

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Section: Introductionmentioning

confidence: 99%

Effective heterogeneous electro-Fenton process of m-cresol with iron loaded actived carbon

et al. 2015

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“…Not only in Taiwan, the textile industries of elsewhere all faced the higher and higher pressure from stricter governmental regulations and public attentions. Therefore, the development of textile wastewater treatment technologies to especially solve high color problems has drawn much attention from research communities and industries in this decade [3][4][5][6][7][8][9][10].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

“…(2015) [1][2][3][4][5][6][7][8][9][10][11][12][13] www.deswater.com doi: 10.1080/19443994.2015.1061955 discharged to the nearby water bodies from textile industries resulting serious damage of the ecological environment and threat of human health. The high color and organic concentrations in textile effluents are usually difficult to be degraded and decolorized that the serious impact for water environment has drawn the attention of public and government.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Reductive decolorization of acid blue 113 azo dye by nanoscale zero-valent iron and iron-based bimetallic particles

Shu

Chang

Liu

2016

Desalination and Water Treatment

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In this study, effectively reductive decolorization of wastewater with synthesized C.I. Acid Blue 113 (AB113) was obtained by nanoscale particles of zero-valent iron (NZVI), bimetallic iron/nickel (nFe/Ni) and iron/zinc (nFe/Zn) which were prepared in the laboratory with large surface area and reductive potential. The particle size was identified less than 100 nm by field emission scanning electron microscope (FESEM) that nickel was homogeneously distributed with iron element by FESEM mapping for nFe/Ni sample. Moreover, the surface areas of bimetallic nanoparticle samples such as nFe/Ni and nFe/Zn were significantly increased than that of NZVI. The effects of experimental variables such as nanoparticle dosage, initial dye concentration, and metal composition on AB113 decolorizing were investigated. From the results, the synthesized AB113 wastewater of high color and total organic carbon (TOC) was successfully reductive decolorized using three iron-based nanoparticle samples. The optimal conditions were obtained the best color removal efficiencies in 30 min while an initial dye concentration of 100 mg l −1 and nFe/Ni dosage of 0.2 g l −1 . Besides, a modified pseudo-first-order kinetic equation was developed to describe the color removal efficiency affected by both initial dye concentration and nanoparticle dosage. The higher nanoparticle dosage, the higher color and TOC removal efficiencies were obtained within the nanoparticle dosage of 0.2 g l −1 . Furthermore, among three iron-based nanoparticle samples, nFe/Ni preformed the best color and TOC removal as well as durability.

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“…The Asia‐Pacific region is the largest textiles manufacturing market accounting for about 68% market share. Therefore, the high demand in textile market sets goal for designing and preparation of varieties of huge amount of synthetic dyes whichposses a great threat to the environment, because the 5% landfill space is consumed by the textile waste and 20% of the fresh water becomes polluted during the treatment and dying of textiles . The coloured textile waste water, besides the aesthetic problem, inhibits the penetration of sunlight inside water and it disturbs respiration, biological and photosynthesis processes in the aquatic environment.…”

Section: Introductionmentioning

confidence: 99%

“…The conventional physical, chemical and biological treatments of textile wastewater are insufficient to independently remove colours from the effluent; but their combinations sometimes can remove up to 85% of the polluting chemicals from effluent. Thus, the research and development to encounter textile waste water is being followed through two parallel approaches, i. e., (i) complete degradation of the non‐reusable dye molecules present in the effluent by using advanced oxidation processes (AOPs) and (ii) the separation of reusable dye molecule through efficient adsorption followed by desorption . Among several AOPs, ozonation is considered to be one of the promising and practical approaches .…”

Section: Introductionmentioning

confidence: 99%

Complementary Bifunctional Unique Properties of (α,β)‐PbO Nanoparticles for Efficient Catalysis and Adsorption for Water Remediation

et al. 2019

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Lead oxides (PbO) of same chemical composition, but different crystallographic properties have been developed for complementary catalytic ozonation (designated by [PbO]a) and adsorption (designated by [PbO]b) of a model dye, reactive red–120 (RR‐120) with highest possible efficiency beyond the state‐of‐the‐art of individual processes. The highest extent of decolouration (∼99% after 4 min) with kappRR-120 1.77×10−2 s−1 and mineralization (50% after 15 min) of RR‐120 at pH 10.5 was achieved by ozonation using 0.5 g/L catalyst [PbO]a consisting major fraction of α‐PbO phase (α‐PbO: β‐PbO∼4:1) in its crystal structure. Minimum adsorption of RR‐120 (∼7%) on catalyst's surface [PbO]a led to higher accessibility of O3 to free catalyst surface sites and helped to achieve highest efficiency of catalytic ozonation. On the other hand, adsorbent [PbO]b mainly consisting of β‐PbO phase (α‐PbO: β‐PbO∼1:4) with a fractional coexistence of α‐PbO phase showed excellent adsorption of RR‐120 (571 mg/g at 320 K) at pH 7.5, but it showed inferior efficiency in catalytic ozonation. Both the materials were found to be reusable and environmentally acceptable.

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An insight into the effective advanced oxidation process for treatment of simulated textile dye waste water

Abstract: The comparison in the extent of % mineralization of Simulated Textile Dye Waste Water (STDWW) in three Advanced Oxidation Processes.

Cited by 32 publications

References 33 publications

Effective heterogeneous electro-Fenton process of m-cresol with iron loaded actived carbon

Effective heterogeneous electro-Fenton process of m-cresol with iron loaded actived carbon

Reductive decolorization of acid blue 113 azo dye by nanoscale zero-valent iron and iron-based bimetallic particles

Complementary Bifunctional Unique Properties of (α,β)‐PbO Nanoparticles for Efficient Catalysis and Adsorption for Water Remediation

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