Efficient decolorization of azo dye wastewater with polyaniline/graphene modified anode in microbial electrochemical systems

Li, Ruixiang; Tian, Li; Wan, Yuxuan; Zhang, Xiaolin; Liu, Xueyi; Li, Runtong; Pu, Hangming; Gao, Tong; Wang, Xin; Zhou, Qixing

doi:10.1016/j.jhazmat.2021.126740

Cited by 57 publications

(12 citation statements)

References 76 publications

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“…Azo dyes are synthetic dyes that generally contain one or more azo bonds (-N = N-) in their chemical structures [ 20 ]. Azo dyes are frequently used in printing and dyeing, textile, paper making, pharmaceutical and other industries.…”

Section: Introductionmentioning

confidence: 99%

Ginger (Zingiber officinale) extract mediated green synthesis of silver nanoparticles and evaluation of their antioxidant activity and potential catalytic reduction activities with Direct Blue 15 or Direct Orange 26

Gao

Kong

et al. 2022

PLoS ONE

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The green synthesis of silver nanoparticles (AgNPs) using a water extract of Ginger (Zingiber officinale) root by microwave irradiation and its antibacterial activities have been reported. However, AgNPs prepared from different parts of ginger root water or ethanol extract by ultrasound synthesis and their antioxidant activity and whether the biogenic could be used to catalyze the reduction of hazardous dye are unknown. This study concentrated on the facile green synthesis of AgNPs prepared from different parts (unpeeled ginger, peeled ginger, and ginger peel) of ginger root water or ethanol extract by the ultrasound-assisted method. We studied their antioxidant activity and catalytic degradation of hazardous dye Direct Orange 26 (DO26) and Direct Blue 15 (DB15). The surface plasmon resonance (SPR) peak of AgNPs was at 428–443 nm. The biogenic AgNPs were approximately 2 nm in size with a regular spherical shape identified from TEM analysis. The ethanol extracts of dried unpeeled ginger and peeled ginger, fresh peeled ginger and ginger peel. The Z. officinale AgNPs synthesized by dried unpeeled ginger ethanol extract showed the best antioxidant activity. Their scavenging activities were significantly better than BHT (p <0.05). The different parts of ginger extracts showed no catalytic degradation activities of DB15 and DO26. Still, the synthesized Z. officinale AgNPs exhibited good catalytic degradation activities, while their ability to catalytic degradation to DB15 was better than DO26. In the additive ratio of 3 mL DB15, 0.1 mL NaBH4 and 0.1 mL AgNPs, the degradation rates of DB15 (or DO26) at 15 min, 30 min and 60 min were only 1.8% (0.9%), 2.8% (1.4%) and 3.5% (1.6%) in the absence of AgNPs. When adding Z. officinale AgNPs prepared from dried ginger peel ethanol extract or fresh ginger peel water extract, the degradation rates of DB15 sharply increased to 97% and 93% after 30 min, respectively. In conclusion, ginger extract has good antioxidant properties. Z. officinale AgNPs biosynthesis from ginger extract exhibit excellent catalytic degradation activities, especially for the ginger peel extract. They have application value in the treatment of textile effluents and provide a new idea and method for the comprehensive development and utilization of ginger resources.

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Section: Introductionmentioning

confidence: 99%

Ginger (Zingiber officinale) extract mediated green synthesis of silver nanoparticles and evaluation of their antioxidant activity and potential catalytic reduction activities with Direct Blue 15 or Direct Orange 26

Gao

Kong

et al. 2022

PLoS ONE

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“…187 For example, Fang et al 188 reported that expression of genes in G. sulfurreducens was down regulated to produce more electronrelaying proteins to keep intracellular metabolism in tune with physiological needs when the bacteria were interfaced with a coated electrode compared with G. sulf urreducens cultured in medium containing fumarate. Li et al 189 also found that a polyaniline/graphene-modified electrode facilitated the upregulation of some metabolites that helped to maintain the normal activities of microorganisms, induced changes in the metabolic pathways, and promoted the electron transfer process to remove the pollutant. Furthermore, electrode-fixed inhibitors avoided runoff of chemical agents in continuous-flow MECs, which promoted the development of practical application.…”

Section: Discussionmentioning

confidence: 99%

Suppressing Methane Production to Boost High-Purity Hydrogen Production in Microbial Electrolysis Cells

Tang

et al. 2022

Environ. Sci. Technol.

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Hydrogen gas (H2) is an attractive fuel carrier due to its high specific enthalpy; moreover, it is a clean source of energy because in the combustion reaction with oxygen (O2) it produces water as the only byproduct. The microbial electrolysis cell (MEC) is a promising technology for producing H2 from simple or complex organics present in wastewater and solid wastes. Methanogens and non-archaeal methane (CH4)-producing microorganisms (NAMPMs) often grow in the MECs and lead to rapid conversion of produced H2 to CH4. Moreover, non-archaeal methane production (NAMP) catalyzed by nitrogenase of photosynthetic bacteria was always overlooked. Thus, suppression of CH4 production is required to enhance H2 yield and production rate. This review comprehensively addresses the principles and current state-of-the-art technologies for suppressing methanogenesis and NAMP in MECs. Noteworthy, specific strategies aimed at the inhibition of methanogenic enzymes and nitrogenase could be a more direct approach than physical and chemical strategies for repressing the growth of methanogenic archaea. In-depth studies on the multiomics of CH4 metabolism can possibly provide insights into sustainable and efficient approaches for suppressing metabolic pathways of methanogenesis and NAMP. The main objective of this review is to highlight key concepts, directions, and challenges related to boosting H2 generation by suppressing CH4 production in MECs. Finally, perspectives are briefly outlined to guide and advance the future direction of MECs for production of high-purity H2 based on genetic and metabolic engineering and on the interspecific interactions.

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“…A separate class of adsorbents is represented by the polyaniline-coated carbonaceous materials, e.g., activated carbon [ 7 , 64 ]; activated carbonized peanut shells [ 65 ]; activated carbons based on prickly pear seeds [ 66 ]; carbonized tea waste [ 67 ]; graphene [ 47 , 68 ]; multiwall carbon nanotubes [ 8 ] or reduced graphene oxide [ 30 , 69 , 70 ]. Only exceptionally, polyaniline was decorated in a reverse manner by an inorganic component, such as copper(II) oxide [ 71 ].…”

Section: Polyaniline Adsorbentsmentioning

confidence: 99%

Recent Advances in the Removal of Organic Dyes from Aqueous Media with Conducting Polymers, Polyaniline and Polypyrrole, and Their Composites

Stejskal

2022

Polymers

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Water pollution by organic dyes, and its remediation, is an important environmental issue associated with ever-increasing scientific interest. Conducting polymers have recently come to the forefront as advanced agents for removing dye. The present review reports on the progress represented by the literature published in 2020–2022 on the application of conducting polymers and their composites in the removal of dyes from aqueous media. Two composites, incorporating the most important polymers, polyaniline, and polypyrrole, have been used as efficient dye adsorbents or photocatalysts of dye decomposition. The recent application trends are outlined, and future uses also exploiting the electrical and electrochemical properties of conducting polymers are offered.

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Efficient decolorization of azo dye wastewater with polyaniline/graphene modified anode in microbial electrochemical systems

Cited by 57 publications

References 76 publications

Ginger (Zingiber officinale) extract mediated green synthesis of silver nanoparticles and evaluation of their antioxidant activity and potential catalytic reduction activities with Direct Blue 15 or Direct Orange 26

Ginger (Zingiber officinale) extract mediated green synthesis of silver nanoparticles and evaluation of their antioxidant activity and potential catalytic reduction activities with Direct Blue 15 or Direct Orange 26

Suppressing Methane Production to Boost High-Purity Hydrogen Production in Microbial Electrolysis Cells

Recent Advances in the Removal of Organic Dyes from Aqueous Media with Conducting Polymers, Polyaniline and Polypyrrole, and Their Composites

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