Feasibility of industrial-scale treatment of dye wastewater via bio-adsorption technology

Li, Wei; Mu, Bingnan; Yang, Yiqi

doi:10.1016/j.biortech.2019.01.002

Cited by 463 publications

(128 citation statements)

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“…Dying industries and textile companies are responsible for water contamination . Photocatalytic degradation of azo dyes employing metal nanoparticles provides a new approach for the treatment of wastewater containing dye effluents.…”

Section: Introductionmentioning

confidence: 99%

Eco‐Friendly Approach to Synthesize Selenium Nanoparticles: Photocatalytic Degradation of Sunset Yellow Azo Dye and Anticancer Activity

2019

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This report has two principal goals. First, to synthesis Se nanoparticles (Se-NPLs) via a green approach. Secondly, to explore the photocatalytic activity of Se-NPLs towards the decolorization of sunset yellow (SSY) azo-dye and to test its activity against some types of human cancers. Green synthesis of Se-NPLs from the leaf extracts of Drumstick was developed. Bio-synthesized Se-NPLs were characterized using FTIR, UV-vis, photoluminescence (PL), X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy dispersive analysis Xray (EDAX) and transmission electron microscopy (TEM) analyses. The UV-vis absorption maximum between 200 and 400 nm was due to the formation of SPR of Se-NPLs. FTIR revealed the Se-NPLs were synthesized, capped and stabilized with biomolecules present in the plant extracts. Se-NPLs exhibited an excitation peak at 399 nm and produced an emission peak at 599 nm. EDAX profile provided a signal of atomic Se (1.45 Kev).XRD confirmed the crystalline nature of Se-NPLs. SEM and TEM observations show that spherical Se particles appeared with diameters ranging from 23 to 35 nm. A possible mechanism of the reduction of (SeO 3 2 À ) to (Se 0 ) was discussed. The electrical conductivity was measured with temperature and the activation energy was calculated. The photocatalytic study conducted that Se-NPLs have the efficiency to degrade sunset yellow dye and the mechanism of degradation has been proposed. Se-NPLs have been shown to be effective against three types of human cancers (Caco-2 cells, HepG2 cells, and Mcf-7 cells). Se-NPLs are potent anticancer and inhibit the growth of the three cancer cells as indicated by the IC 50 values. To conclude, the green-synthesized Se-NPLs may be a candidate for further evaluation as a chemotherapeutic agent for some human cancer treatment.

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Section: Introductionmentioning

confidence: 99%

Eco‐Friendly Approach to Synthesize Selenium Nanoparticles: Photocatalytic Degradation of Sunset Yellow Azo Dye and Anticancer Activity

2019

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“…Nowadays, the wastewater generated in the dyeing industry contains considerable amounts of organic pollutants and causes severe environmental and health problems [1]. It is estimated that over 7 × 10 5 tons of dyes are produced annually [2]. Dye molecules have complex and stable structures due to the existence of auxochromes (water soluble bonding compound) and chromophores (color giving compound) [3], which are toxic, recalcitrant, and difficult to be degraded by traditional physical, chemical, and biological treatment [4].…”

Section: Introductionmentioning

confidence: 99%

Degradation of Methylene Blue via Dielectric Barrier Discharge Plasma Treatment

Xie

et al. 2019

Water

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The degradation of methylene blue (MB) using an upgraded dielectric barrier discharge (DBD) plasma reactor was investigated in this paper. Air plasma was generated in the glass bead packed bed in the reactor, which was propagated into MB solution through a microporous diffuser plate. Microdischarge phenomenon can be observed on the interface of MB solution and the diffuser plate, where plasma active species were generated. The effects of air flow rate, initial solution concentration, initial solution pH, and initial solution conductivity on MB degradation were examined. Experimental results indicated that the proposed plasma reactor was effective for MB degradation. No obvious change in MB degradation efficiency was obtained for solution with various initial pH and conductivities, which suggested the potential of the reactor in actual wastewater treatment. The possible mechanism of the generation of plasma active species for MB degradation was proposed. In addition, the total organic carbon removal and chemical oxidation demand removal after 30 min treatment were 38.5% and 48.3%, which was higher than that obtained by ozone. The energy yield for MB degradation reached up to 9.3 g/kWh. Finally, a possible degradation pathway of MB solution was proposed.agents. As a promising plasma discharge mode, non-thermal plasma (NTP) technique can be utilized to degrade pollutants in wastewater at atmospheric pressure and room temperature with lower input energy than thermal plasma [8]. The typical NTP discharge in, and in contact with, liquids can be divided into three parts, namely, direct discharge in liquids, discharge in gas phase over a liquid, and discharge in multiphase environment such as bubbles or foams inside liquids [7].For discharge in gas phase over a liquid, the gas breakdown occurs in the gap between liquid and high voltage plate. Thus, plasma active species and high energy electrons are generated and then transferred into liquids to react with organic compound [9,10]. The efficiency of NTP reactors is mainly relevant to the efficiency of mass transfer between gas and liquid phases. A packed water jet bed plasma reactor was put forward by Foster et al. [11] to maximize the plasma contact area with the water. The parallel operation of multiple plasma jets or packed bed arrays of water streams are potential solutions to the scale-up problem. Tichonovas et al. [4] and Li et al. [12] proposed a dielectric barrier discharge (DBD) reactor and a gas-liquid plasma reactor, respectively. In their reactors, the gas was sent into the discharge zone, with plasma generated and dispersed into liquid phase by porous ceramic diffusers. This process can increase the efficiency of mass transfer of active species into liquid, resulting in enhanced degradation efficiency. However, the active species diffused into liquid are mostly ozone since the other active radicals dissipate during diffusion process due to their short lifetime [13]. Thus, the mineralization of contaminants in wastewater is difficult to achieve. Therefore, it ...

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“…Recently, the considerable amount of organic dye effluents from textile industries directly discarded to the aqueous environment without treatment has drawn the attention of researchers. Such discharges of dye‐containing wastewater could exert severe environmental contamination, which adversely affects aquatic life and public health . Early reports demonstrated that methylene blue (MB), a cationic dye, may induce some detrimental effects on the central nervous system along with neurotoxic symptoms, for example, headache, shiver, vertigo, and mental confusion .…”

Section: Introductionmentioning

confidence: 99%

Enhanced selective adsorption of cation organic dyes on polyvinyl alcohol/agar/maltodextrin water‐resistance biomembrane

Hoang

Nguyen

Bui

et al. 2019

J of Applied Polymer Sci

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In this study, we designed a novel hydrogel composite membrane based on the combination of polyvinyl alcohol (PVA), agar, and maltodextrin through a facile solution‐casting router. From Fourier‐transform infrared spectroscopy, contact angle, scanning electron microscopy, and swelling analyses, the formation of hydrogen bonds between surface functional groups of PVA, agar, and maltodextrin was confirmed. As a result, the PVA/agar/maltodextrin membranes exhibited a more hydrophobic nature compared with pure PVA. The thermal stability and integrity of such obtained composite membranes were also elucidated by the evaluation of thermogravimetric analysis and mechanical behavior. Besides, the composite membrane exhibited high selective adsorption for cationic dyes, namely 20.2 mg g−1 for methylene blue and 19.17 mg g−1 for crystal violet at initial dye concentration of 100 mg/L, an adsorbent dosage of 0.1 g, contact time of 180 min, and solution pH 7, while anionic dyes such as congo red and methyl orange are approximately zero. The adsorption kinetics and isotherm of the as‐prepared composite membranes were well fitted to the pseudo‐second‐order and Temkin model. The effect of factors, including contact time, solution pH, PVA content, and initial dye concentration on the adsorption capacity of the as‐prepared composite membrane was also investigated in detail. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48904.

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Feasibility of industrial-scale treatment of dye wastewater via bio-adsorption technology

Cited by 463 publications

References 100 publications

Eco‐Friendly Approach to Synthesize Selenium Nanoparticles: Photocatalytic Degradation of Sunset Yellow Azo Dye and Anticancer Activity

Eco‐Friendly Approach to Synthesize Selenium Nanoparticles: Photocatalytic Degradation of Sunset Yellow Azo Dye and Anticancer Activity

Degradation of Methylene Blue via Dielectric Barrier Discharge Plasma Treatment

Enhanced selective adsorption of cation organic dyes on polyvinyl alcohol/agar/maltodextrin water‐resistance biomembrane

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