Novel bio-electro-Fenton technology for azo dye wastewater treatment using microbial reverse-electrodialysis electrolysis cell

Li, Xiaohu; Jin, Xiangdan; Zhao, Nannan; Angelidaki, Irini; Zhang, Yifeng

doi:10.1016/j.biortech.2016.12.114

Cited by 159 publications

(77 citation statements)

References 42 publications

(38 reference statements)

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“…The domestic wastewater was collected from primary clarifier (Lyngby Wastewater Treatment Plant, Copenhagen, Denmark) which was amended by 1 g/L acetate prior to use. The characteristics of the wastewater were described previously [10]. After enrichment for around one month, mature anodic biofilm was formed when stable maximum voltage (~650 mV) was observed in several successive batches.…”

Section: Reactor Setup and Operationmentioning

confidence: 99%

“…Latterly, it was found that the treatment capacity can be boosted by supplying small amounts of electricity (0.2-1.0 V) to the system, due to the improved H 2 O 2 production [19]. In lights of the advantages in H 2 O 2 production and utilization, the bio-electro-Fenton systems have been applied to treat a broad spectrum of recalcitrant organic pollutants, including azo days, aniline, pharmaceuticals, p-nitrophenol and so on [10,11].…”

Section: Introductionmentioning

confidence: 99%

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Microbial electrolytic disinfection process for highly efficient Escherichia coli inactivation

Zhou

Huang

et al. 2018

Chemical Engineering Journal

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Water quality deterioration caused by a wide variety of recalcitrant organics and pathogenic microorganisms has become a serious concern worldwide. Bio-electro-Fenton systems have been considered as cost-effective and highly efficient water treatment platform technology. While it has been extensively studied for recalcitrant organics removal, its application potential towards water disinfection (e.g., inactivation of pathogens) is still unknown. This study investigated the inactivation of Escherichia coli in a microbial electrolysis cell based bio-electro-Fenton system (renamed as microbial electrolytic-Fenton cell) with the aim to broad the application of microbial electrochemistry. Results showed that a 4-log reduction of Escherichia coli (10 7 to hundreds CFU/mL) was achieved with an external applied voltage of 0.2 V, 0.3 mM Fe 2+ and cathodic pH of 3.0. However, non-notable inactivation was observed in the control experiments without external voltage or Fe 2+ dose. The disinfection effect was enhanced when cathode air flow rate increased from 7 to 41 mL/min and was also in proportion to the increase of Fe 2+ concentration from 0.15 to 0.45 mmol/mL. Fatal cell membrane destruction by •OH was identified as one potential mechanism for disinfection. This study successfully demonstrated the feasibility of bio-electro-Fenton process for pathogens inactivation, which offers insight for the future development of sustainable, efficient, and cost-effective biological water treatment technology.

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Section: Reactor Setup and Operationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microbial electrolytic disinfection process for highly efficient Escherichia coli inactivation

Zhou

Huang

et al. 2018

Chemical Engineering Journal

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“…Fenton's reagent is a precursor of hydroxyl free radicals; these madly reactive hydroxyl free radicals attack dye substrate molecules at the sites of multiple bonds and carry out either excessive hydroxylation of dye contaminants or causes dehydrogenation of dye molecules, hence producing stable inorganic materials directly or indirectly converting the dye pollutant into biodegradable and safe materials. Fenton's processes offer a remarkable efficiency and can be extended to much broader spectrum of dyes due to its fabulous non-selectivity [22]. Recently photo-Fenton's process, i.e.…”

Section: Advanced Oxidation Processes (Aops)mentioning

confidence: 99%

“…That is why environmental chemists were chewing their nails to explore more advanced, effective and non-selective techniques to achieve dye abatement goals. Thanks to electrochemical techniques which have taken the bull of organic pollutants by horns and have controlled the aquatic pollution to a great extent [22].…”

Section: Microbiological and Enzymatic Degradation Techniquesmentioning

confidence: 99%

Contamination of Water Resources by Food Dyes and Its Removal Technologies

Hussain¹,

Khan²,

Gul³

et al. 2020

Water Chemistry

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Food dyes comprise different groups which impart color to a wide range of food products. Food products are mainly purchased and consumed by people because they are nutritive and flavorsome and have an attractive color. Food color stimulates appetite and enhances its esthetic appeal of food on table for customer. With sky rocketing industrialization and modernization, the worldwide production of dyes in 2010 was forecasted to be 2.1 metric tons. It has been estimated that 15% of total dyes produced worldwide are discharged to water bodies which adversely affect aquatic ecosystem. Dyes in water reduces its transparency, thereby declining light penetration in the water, hence influencing photosynthesis which consequently reduces dissolved oxygen which is an alarming situation for both aquatic flora and fauna. Dyes wastewater discharged from huge number of industries like textile, leathers, paint, food, pharmaceutical etc. and deteriorating the aquatic environment and pose threat to living organism. The presence of dye molecules in water channels is an emerging alarm to an environmental scientist. An environmental friendly and self-sustainable treatment method should be explored to address this problem. Therefore, this work elaborates the various methods used for removal and degradation of dyes in water, although some processes have a common shortcoming like production of secondary pollution to the environment. This chapter have tried to highlight the important application of food dyes, their contamination and their toxic effect. Herein we also focus on remediation techniques like separation (adsorption, filtration, etc.) and degradation (chemical, biological and electrochemical oxidation) of dyes in aqueous solution. The mechanism and pros and cons of different methods are explored and discussed briefly.

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“…MPD and its derivatives in wastewater are very numerous and miscellaneous, exerting a negative effect on wastewater treatment. When investigating such wastewater, the methods used by various researchers can be summed up as physical separation methods, chemical oxidation methods, and biological treatment . Compared to high‐cost chemical oxidation and time‐consuming biological treatment, physical separation stands out in the treatment of dye wastewater.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of adsorption for m‐phenylenediamine in aqueous solution onto chemically modified resins

Wang

Liu

et al. 2018

J of Applied Polymer Sci

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Four kinds of hypercrosslinked resins (acidic resins labeled SAMR and TAMR and heterocyclic resins IDLMR and PRLMR) were synthesized as adsorbents to remove m-phenylenediamine (MPD) from aqueous solution comparably. The Brunauer-Emmett-Teller specific surface area and pore size distribution of the two types of resins have been compared, and the infrared spectra of the resins confirm the presence of the modified groups. The adsorption isotherms illustrate that the Freundlich equation fits more appropriately than the Langmuir equation or the Temkin equation. In addition, the kinetic curves indicate that the pseudo-second-order model is a better fit than the pseudo-first-order model. The thermodynamic studies show that the isosteric adsorption enthalpy changes (ΔH) and the Gibbs free energy change (ΔG) are both negative, revealing that all of the adsorption processes are spontaneous and exothermic. All of the modified resins exhibit the best adsorption capacity at pH = 6.24. The results show that the acidic resins have better adsorption of MPD.

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Novel bio-electro-Fenton technology for azo dye wastewater treatment using microbial reverse-electrodialysis electrolysis cell

Cited by 159 publications

References 42 publications

Microbial electrolytic disinfection process for highly efficient Escherichia coli inactivation

Microbial electrolytic disinfection process for highly efficient Escherichia coli inactivation

Contamination of Water Resources by Food Dyes and Its Removal Technologies

Comparative study of adsorption for m‐phenylenediamine in aqueous solution onto chemically modified resins

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