The Experts below are selected from a list of 8961 Experts worldwide ranked by ideXlab platform
M R Almamun - One of the best experts on this subject based on the ideXlab platform.
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photocatalytic activity improvement and application of uv tio2 photocatalysis in Textile Wastewater treatment a review
Journal of environmental chemical engineering, 2019Co-Authors: M R Almamun, S Kader, M S Islam, M Z H KhanAbstract:Abstract Treatment of Textile Wastewater using titanium dioxide (TiO2) photocatalysis has been started from the last decade and reached attention to the researchers because of its versatile application. The variety of applications of TiO2 as a photocatalyst has been taken place because of low operating temperature, biologically inert nature, low energy consumption, water insolubility, ease availability and photoactivity, less toxicity, high chemical stability, suitable flat band potential, narrow band gap and environmentally benign. The successful and efficient application of photocatalysis depends on quality of photocatalyst, nature of pollutants, and source of light, which should be in close contact with each other. The TiO2 photocatalyst is used for the effluent treatment of Textile Wastewater in the presence of ultraviolet (UV) irradiation. Heterogeneous UV-TiO2 photocatalysis is capable to remove organic pollutants from Textile Wastewater, which has been widely studied and the technology also being commercialized in many developing countries in the world. This review focuses on the mechanism of UV-TiO2 photocatalysis, modification of TiO2 photocatalyst, and application of doping and co-doping in order to improve the photocatalytic activity in Wastewater treatment. In addition, the review conveys comprehensive and fundamental assessments of the photocatalytic activity for the removal of organic dyes and phenolic compounds from Textile Wastewater.
Chih-hsiang Liao - One of the best experts on this subject based on the ideXlab platform.
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decolorization of Textile Wastewater by photo fenton oxidation technology
Chemosphere, 2000Co-Authors: Shyhfang Kang, Chih-hsiang LiaoAbstract:Abstract This paper describes the use of photo-fenton process for color removal from Textile Wastewater stream. The Wastewater sample to be treated was simulated by using colorless polyvinyl alcohol (PVA) and reactive dyestuff of R94H. As a result, the hydroxyl radical (HO ) oxidation can effectively remove color, but the chemical oxygen demand (COD) was removed in a slight degree. The color removal is markedly related with the amount of HO formed. The optimum pH for both the OH formation and color removal occurs at pH 3–5. Up to 96% of color can be removed within 30 min under the studied conditions. Due to the photoreduction of ferric ion into ferrous ion, color resurgence was observed after 30 min. The ferrous dosage and UV power affect the color removal in a positive way, however, the marginal benefit is less significant in the higher range of both. PVA as the major background COD of a Textile Wastewater stream inhibits the color removal insignificantly as its concentration increases.
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UV-Catalyzed Hydrogen Peroxide Treatment of Textile Wastewater
Environmental Engineering Science, 2000Co-Authors: Chih-hsiang Liao, Ying-hsien YangAbstract:ABSTRACT This paper describes the use of an H2O2/UV oxidation process as an innovative technology for the advanced treatment of Textile Wastewater to meet the new discharge standards of 1998 in Tai...
Camila Costa Amorim - One of the best experts on this subject based on the ideXlab platform.
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Application of solar photo-Fenton toward toxicity removal and Textile Wastewater reuse
Environmental Science and Pollution Research, 2017Co-Authors: Maria Clara V. M. Starling, Paulo Henrique Rodrigues Dos Santos, Felipe Antônio Ribeiro Souza, Sílvia Corrêa Oliveira, Mônica Maria D. Leão, Camila Costa AmorimAbstract:Solar photo-Fenton represents an innovative and low-cost option for the treatment of recalcitrant industrial Wastewater, such as the Textile Wastewater. Textile Wastewater usually shows high acute toxic and variability and may be composed of many different chemical compounds. This study aimed at optimizing and validating solar photo-Fenton treatment of Textile Wastewater in a semi-pilot compound parabolic collector (CPC) for toxicity removal and Wastewater reclamation. In addition, treated Wastewater reuse feasibility was investigated through pilot tests. Experimental design performed in this study indicated optimum condition for solar photo-Fenton reaction (20 mg L^−1 of Fe^2+ and 500 mg L^−1 of H_2O_2; pH 2.8), which achieved 96 % removal of dissolved organic carbon (DOC) and 99 % absorbance removal. A toxicity peak was detected during treatment, suggesting that highly toxic transformation products were formed during reaction. Toxic intermediates were properly removed during solar photo-Fenton (SPF) treatment along with the generation of oxalic acid as an ultimate product of degradation and COS increase. Different samples of real Textile Wastewater were treated in order to validate optimized treatment condition with regard to Wastewater variability. Results showed median organic carbon removal near 90 %. Finally, reuse of treated Textile Wastewater in both dyeing and washing stages of production was successful. These results confirm that solar photo-Fenton, as a single treatment, enables Wastewater reclamation in the Textile industry. Graphical abstract Solar photo-Fenton as a revolutionary treatment technology for “closing-the-loop” in the Textile industry
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Application of solar photo-Fenton toward toxicity removal and Textile Wastewater reuse
Environmental Science and Pollution Research, 2016Co-Authors: Maria Clara V. M. Starling, Paulo Henrique Rodrigues Dos Santos, Felipe Ribeiro Souza, Sílvia Maria Alves Corrêa Oliveira, Mônica Maria Diniz Leão, Camila Costa AmorimAbstract:Solar photo-Fenton represents an innovative and low-cost option for the treatment of recalcitrant industrial Wastewater, such as the Textile Wastewater. Textile Wastewater usually shows high acute toxic and variability and may be composed of many different chemical compounds. This study aimed at optimizing and validating solar photo-Fenton treatment of Textile Wastewater in a semi-pilot compound parabolic collector (CPC) for toxicity removal and Wastewater reclamation. In addition, treated Wastewater reuse feasibility was investigated through pilot tests. Experimental design performed in this study indicated optimum condition for solar photo-Fenton reaction (20 mg L−1 of Fe2+ and 500 mg L−1 of H2O2; pH 2.8), which achieved 96 % removal of dissolved organic carbon (DOC) and 99 % absorbance removal. A toxicity peak was detected during treatment, suggesting that highly toxic transformation products were formed during reaction. Toxic intermediates were properly removed during solar photo-Fenton (SPF) treatment along with the generation of oxalic acid as an ultimate product of degradation and COS increase. Different samples of real Textile Wastewater were treated in order to validate optimized treatment condition with regard to Wastewater variability. Results showed median organic carbon removal near 90 %. Finally, reuse of treated Textile Wastewater in both dyeing and washing stages of production was successful. These results confirm that solar photo-Fenton, as a single treatment, enables Wastewater reclamation in the Textile industry.
M Z H Khan - One of the best experts on this subject based on the ideXlab platform.
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photocatalytic activity improvement and application of uv tio2 photocatalysis in Textile Wastewater treatment a review
Journal of environmental chemical engineering, 2019Co-Authors: M R Almamun, S Kader, M S Islam, M Z H KhanAbstract:Abstract Treatment of Textile Wastewater using titanium dioxide (TiO2) photocatalysis has been started from the last decade and reached attention to the researchers because of its versatile application. The variety of applications of TiO2 as a photocatalyst has been taken place because of low operating temperature, biologically inert nature, low energy consumption, water insolubility, ease availability and photoactivity, less toxicity, high chemical stability, suitable flat band potential, narrow band gap and environmentally benign. The successful and efficient application of photocatalysis depends on quality of photocatalyst, nature of pollutants, and source of light, which should be in close contact with each other. The TiO2 photocatalyst is used for the effluent treatment of Textile Wastewater in the presence of ultraviolet (UV) irradiation. Heterogeneous UV-TiO2 photocatalysis is capable to remove organic pollutants from Textile Wastewater, which has been widely studied and the technology also being commercialized in many developing countries in the world. This review focuses on the mechanism of UV-TiO2 photocatalysis, modification of TiO2 photocatalyst, and application of doping and co-doping in order to improve the photocatalytic activity in Wastewater treatment. In addition, the review conveys comprehensive and fundamental assessments of the photocatalytic activity for the removal of organic dyes and phenolic compounds from Textile Wastewater.
Chen Jian - One of the best experts on this subject based on the ideXlab platform.
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evaluation of the efficacy of upflow anaerobic sludge blanket reactor in removal of colour and reduction of cod in real Textile Wastewater
Bioresource Technology, 2008Co-Authors: Wijetunga Somasiri, Wenquan Ruan, Chen JianAbstract:The upflow anaerobic sludge blanket (UASB) reactor was evaluated for its efficacy in decolourization and reduction in chemical oxygen demand (COD) of real Textile Wastewater (RTW) under different operational conditions. The efficiency of UASB reactor in reducing COD was found to be over 90%. Over 92% of colour removal due to biodegradation was achieved. The activities of the anaerobic granules were not affected during the treatment of Textile Wastewater. Cocci-shaped bacteria were the dominant group over Methanothrix like bacteria in Textile Wastewater treatment. Alkalinity, volatile fatty acids (VFA) content and pH in effluents indicated that the anaerobic process was not inhibited by Textile Wastewater. It is concluded that UASB reactor system can effectively be used in the treatment of Textile Wastewater for the removal of colour and in the reduction of COD.