Induction of anoxic microenvironment in multi-phase metabolic shift strategy during periodic discontinuous batch mode operation enhances treatment of azo dye wastewater

2014 ◽  
Vol 165 ◽  
pp. 241-249 ◽  
Author(s):  
C. Nagendranatha Reddy ◽  
A. Naresh Kumar ◽  
J. Annie Modestra ◽  
S. Venkata Mohan
Keyword(s):  
Azo Dye ◽  
Metabolic Shift ◽  
Dye Wastewater ◽  
Batch Mode ◽  
Mode Operation ◽  
Shift Strategy ◽  
Multi Phase

Metabolic phasing of anoxic-PDBR for high rate treatment of azo dye wastewater

2018 ◽  
Vol 343 ◽  
pp. 49-58 ◽  
Author(s):  
C. Nagendranatha Reddy ◽  
A. Naresh Kumar ◽  
S. Venkata Mohan
Keyword(s):  
Azo Dye ◽  
High Rate ◽  
Dye Wastewater

scholarly journals Feasibility study of simultaneous azo dye decolorization and bioelectricity generation by microbial fuel cell-coupled constructed wetland: substrate effects

RSC Advances ◽  
2017 ◽  
Vol 7 (27) ◽  
pp. 16542-16552 ◽  
Author(s):  
Zhou Fang ◽  
Sichao Cheng ◽  
Hui Wang ◽  
Xian Cao ◽  
Xianning Li
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Constructed Wetlands ◽  
Microbial Fuel Cells ◽  
Azo Dye ◽  
Dye Decolorization ◽  
Dye Wastewater ◽  
Substrate Effects ◽  
Bioelectricity Generation ◽  
Azo Dye Decolorization

Microbial fuel cells (MFCs) were embedded into constructed wetlands to form microbial fuel cell coupled constructed wetlands (CW-MFCs) and were used for simultaneous azo dye wastewater treatment and bioelectricity generation.

Experimental Research on Degradation of Azo Dye Wasterwater by Photocatalysis of Nano-TiO2 Doped with Ce / Fe

2013 ◽  
Vol 295-298 ◽  
pp. 331-334 ◽  
Author(s):  
Hong Jiao Song ◽  
Lei Zhu ◽  
Xun Wang
Keyword(s):  
Photocatalytic Activity ◽  
Experimental Research ◽  
Azo Dye ◽  
Sol Gel ◽  
Dye Wastewater ◽  
Photogenerated Electrons ◽  
Sol Gel Process ◽  
Degradation Of Azo Dye

The sol-gel process is applied to respectively prepare nano-TiO2films with Ce (cerium) or nano-TiO2films with Fe (ferium), which are used to degradate azo dye wastewater and present their characterization by XRD and HRTEM methods. The results show that proper amount of Ce or Fe doped into the nano-TiO2films can effectively accelerate the separation of photogenerated electrons-holes and easily form lattices, and consequently promotes nano-TiO2films' photocatalytic activity by nearly 20%.

A built-in zero valent iron anaerobic reactor to enhance treatment of azo dye wastewater

2011 ◽  
Vol 63 (4) ◽  
pp. 741-746 ◽  
Author(s):  
Yaobin Zhang ◽  
Yanwen Jing ◽  
Xie Quan ◽  
Yiwen Liu ◽  
Pascal Onu
Keyword(s):  
Azo Dye ◽  
Visible Spectrum ◽  
Zero Valent Iron ◽  
Upflow Anaerobic Sludge Blanket ◽  
Uasb Reactor ◽  
Anaerobic Sludge ◽  
Dye Wastewater ◽  
Absorption Bands ◽  
Anaerobic Reactor ◽  
Anaerobic Sludge Blanket

Waste scrap iron was packed into an upflow anaerobic sludge blanket (UASB) reactor to form a zero valent iron (ZVI) - UASB reactor system for treatment of azo dye wastewater. The ZVI acted as a reductant to decrease ORP in the reactor by more than 40 mv and functioned as an acid buffer to increase the pH in the reactor from 5.44 to 6.29, both of which improved the performance of the anaerobic reactor. As a result, the removal of color and COD in this reactor was 91.7% and 53%, respectively, which was significantly higher than that of a reference UASB reactor without ZVI. The UV-visible spectrum demonstrated that absorption bands of the azo dye from the ZVI-UASB reactor were substantially reduced. The ZVI promoted methanogenesis, which was confirmed by an increase in CH4 content in the biogas from 47.9% to 64.8%. The ZVI bed was protected well from rusting, which allowed it to function stably. The effluent could be further purified only by pH adjustment because the Fe2+ released from ZVI served as a flocculent.

scholarly journals Ecofriendly biodegradation of Reactive Black 5 by newly isolated Sterigmatomyces halophilus SSA1575, valued for textile azo dye wastewater processing and detoxification

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Rania Al-Tohamy ◽  
Jianzhong Sun ◽  
Mervat F. Fareed ◽  
El-Refaie Kenawy ◽  
Sameh S. Ali
Keyword(s):  
Azo Dye ◽  
Reactive Black 5 ◽  
Dye Wastewater
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