scholarly journals Treatment of Textile/Dye Wastewater by Adsorption Using Metal Oxide Nano Particles

2021 ◽  
Vol 9 (10) ◽  
pp. 934-937
Author(s):  
Sanket Borad
Keyword(s):  
Waste Water ◽  
Literature Review ◽  
Metal Oxide ◽  
Azo Dyes ◽  
Batch Reactor ◽  
Metal Oxide Nanoparticles ◽  
Nano Particles ◽  
Textile Dye ◽  
Anthraquinone Dyes ◽  
Industry Effluent

Abstract: Textile industries produce large amounts of waste water. Presence of various dyes like reactive dyes, azo dyes, anthraquinone dyes, etc.is noted in textile industry effluent. In this work we intend to target azo dyes and anthraquinone dyes which has various colouring and toxic effects. Literature review shows that there are various sustainable wastewater treatments namely adsorption, electro-coagulation, ultrasonic treatment, etc. The present investigation intends to discuss the adsorption method for the treatment of industrial wastewater using metal oxide nanoparticles. Literature review supports the use of synthesized porous MgO powder at Nanoscale for the removal of dyes from aqueous solution. Results indicate that the MgO powder can remove more than 98% of both dyes under optimum operational conditions. At various MgO dosages, dye concentrations, solution pH and contact time in a batch reactor are studied. The analysis is followed by FTIR & XRD. Keyword: Waste-water, MgO, Nano particle, Adsorption, Congo red

scholarly journals Isolation and Screening of Water Microbes for Decolourisation of Textile Dye Waste

2016 ◽  
Vol 11 (1) ◽  
pp. 296-300
Author(s):  
J. K Singh ◽  
R Ranjan ◽  
Pranay Pankaj
Keyword(s):  
Waste Water ◽  
Pseudomonas Aeruginosa ◽  
Bacillus Subtilis ◽  
Azo Dyes ◽  
Bacterial Species ◽  
Textile Dye ◽  
Human Beings ◽  
Degrading Bacteria ◽  
Vis Spectroscopy ◽  
Pre Treatment

Azo dyes are widely used in textile industry. Unused dyes, consisting mainly non biodegradable released along with waste water streams without any proper pre-treatment which cause nuisance for environment and accumulate in flora as well as fauna. These also exhibit allergic, carcinogenic and mutagenic properties for human beings. Isolation and screening of azo dye degrading bacteria are economic in biodegradation and detoxification. In the present study, 200 waste water samples were collected from dye-contaminated sites of textile industries and bacterial species such as Bacillus subtilis, Pseudomonas aeruginosa and Psuedomonas putida were isolated and identified. Evaluation of decolorizing properties of these bacteriae were done by UV-Vis spectroscopy (Amax 596 nm) in different concentrations using different carbon sources such as Hans’s medium and GYP medium. Maximum decolourisation of 0.1% azo dyes were recorded to be 89.0%, 91% and 86% in Hans medium containing charcoal source by Bacillus subtilis, Pseudomonas aeruginosa and Psuedomonas putida respectively at 24 hrs. These bacterial isolates may be utilized in large scale for pre-treatment for ecological balance by avoiding water pollution.

Photocatalytic Mineralization of Azo Dyes Using Nanostructure ZnO Thin Film Coated on Glass Bead

2009 ◽  
Vol 12 (2) ◽  
Author(s):  
Mohammad Hossein Habibi ◽  
Mohammad Khaledi Sardashti
Keyword(s):  
Thin Films ◽  
Methyl Orange ◽  
Azo Dyes ◽  
Glass Bead ◽  
Batch Reactor ◽  
Textile Dyes ◽  
Zno Thin Films ◽  
Textile Dye ◽  
Structure Surface ◽  
Zno Powder

AbstractNanostructure ZnO thin films ZnO have been coated on glass bead by our novel centrifuge coating technique. The structure, surface and optical properties of the particles and thin films were characterized by XRD, SEM, AFM and UV/Vis techniques. The photoassisted degradation of four different azo textile dyes (C.I. Reactive Yellow 84 (HR), C.I. Reactive Red 195 (3BF), Erichrome blue black B (EBB) and Methyl orange (MO)) was examined in a batch reactor using nanostructure ZnO thin films on glass beads. The ZnO thin films loading of the glass bead was 0.23% (w/w). The amount of ZnO on the film was about the same the ZnO powder added in suspension to discolor the same solution of the same azo dyes used as a probe. Mineralization (TOC) of the azo textile dyes was attained within ca. 2 h of UV irradiation of the ZnO thin films glass bead/azo textile dye system. Mineralization kinetics was, in general, appreciably influenced by the pH and tends to be somewhat slower in alkaline or acidic media. Methyl orange was photomineralized more slowly than the others. Final products were, in all cases, CO

scholarly journals Identification and Evaluation of Azo Dye Decolorizing Fungal Species from Industry Effluent for the Development of Consortia Bio Inoculants

2021 ◽  
Vol 4 (1) ◽  
Keyword(s):  
Waste Water ◽  
Filamentous Fungi ◽  
Azo Dyes ◽  
Animal Health ◽  
Agar Plate ◽  
Fungal Species ◽  
Aspergillus Ochraceus ◽  
Zone Formation ◽  
Solid Agar ◽  
Industry Effluent

Azo dyes are the largest class dye used in textile and other industries. Beside of its large benefits it is also toxic, carcinogenic, mutagenic and teratogenic, that constitutes a significant burden to the environment, human as well as animal health. Physicochemical treatment was employed to degrade and detoxify these azo dyes. However this method has limitation in releasing toxic degradant and not economical. It is timely important to search alternative biological ecofriendly treatment methods. The aim of this study was to screen, identify and evaluate potential fungal species having the ability to decolorize and degrade the Azo dyes for the development of consortia bio inoculants.150 industry effluent waste water was collected and fungal species were isolated & identified using Biolog Microstaton identification technology. The fungal azodye decolorization activities were qualitatively evaluated on Remazol yellow, Navey blue, Procion red MX-5B dyes using solid agar plate and broth assay. The result revealed that the percentage of frequency of fungi in waste water was 63.88 % were filamentous fungi and 38.22% non-filamentous fungi. Aspergillus species were dominant (32%). Thirteen fungal species was identified using Biolog MicroStaion reading machine. These are Trichosporon begilli, Rodotrula auranticaA, Candida palmioleophila, Cryptococus terrus, Yarrowia lipolytica, Cryptococus albidus, Aspergillus ochraceus, Aspergillus restrictus, Aspergillus carneus, Penicillium brevicompactum, Penicillium roqueforti, Penicillium digitatum, Fusarium javanicum. Among the fungal isolates tested, only 6 fungi species showed 72-92% decolorization potential measured by Biolog turbidimeter, these are T. begilli, R. aurantica A, P. roqueforti, P. digitatum, A. ochraceus F. javanicum four species, C. palmioleophila, C. terrus, Y. lipolytica, C. albidus, 34-71% decolorizing ability of Navy blue. 3 species, P. brevicompactum, A. carneus, A. restrictus showed 16-29% decolorizing ability. Trichosporon begilli was superior in clear zone formation on solid agar plate test (5.4mm). Through supporting this preliminary study by HPLC, &spectrophotometer analysis for enzymes and secondary metabolite study, it is possible to formulate and develop fungal bioinnoculant consortia for mycoremediation service.

scholarly journals POTENSI KAPANG PELAPUK PUTIH Phanerochaete chrysosporium DALAM PENGOLAHAN LIMBAH INDUSTRI TEKSTIL

2004 ◽  
Vol 9 (2) ◽  
pp. 125-129
Author(s):  
Yulinah Trihadiningrum
Keyword(s):  
Waste Water ◽  
Phanerochaete Chrysosporium ◽  
Removal Efficiency ◽  
High Efficiency ◽  
Batch Reactor ◽  
Optimum Concentration ◽  
White Rot ◽  
Textile Dye ◽  
Color Intensity ◽  
Percent Concentration

Phanerochaete chrysosporium was known as white rot mold which could biodegrade persistent organic pollutants. In this research the ability of the mold in biodegrading textile dye direct orange S and rhemazol yellow, which contained naphtol functional group, was studied. This research included characterization of the waste water and determination of optimum concentration of the waste water for biodegradation. The optimum concentration for biodegradation was determined by measuring the radial growth of the mold in agar medium containing various concentrations of textile dye. The final stage was the application of the mold for biodegrading the textile dye in aerobic batch reactor using the selected concentration. This research showed that P. chrysosporium could grow satisfactorily in minimum medium containing synthetic textile wastewater in various concentrations. The highest colour removal efficiency of 93 percent was achieved in 3 days in the waste water with highest color intensity (absorbance value l520 = 4.00), and 48 percent in the waste water with absorbance value l520 = 1.22. COD removal efficiency of 87 percent was achieved within 12 days in the wastewater of 30 percent concentration, and 83 percent in the waste water of 100 percent concentration. The pH values decreased to 3.23 in the waste water with lower dye concentration and to 3.42 in the higher color intensity, from the initial values of 5.0-6.0. This research concluded that P. chrysosporium was capable to biodegrade naphtol textile dye with reasonably high efficiency.

scholarly journals Waste Water Remediation Using Nanotechnology-A Review

2021 ◽  
Vol 12 (4) ◽  
pp. 4476-4495
Keyword(s):  
Waste Water ◽  
Azo Dyes ◽  
Aquatic Ecosystem ◽  
Low Cost ◽  
Industrial Effluents ◽  
Water Remediation ◽  
Textile Dye ◽  
Conventional Methods ◽  
Low Efficiency ◽  
Dye Remediation

Textile azo dyes are used for coloring fabrics that are potentially carcinogenic and mutagenic chemicals. It is disposed of as industrial effluents into the environment, causing major hazardous impacts on the aquatic ecosystem, and also gets deposited onto the soil for a prolonged period. Several conventional methods previously applied for eliminating these dyes are limited for their low efficiency and high cost. To overcome those issues, various novel semiconductor photocatalysts, nano adsorbents, nanocomposites, and other nanostructures were employed for achieving maximum efficacy at a low cost. In this review, we shall discuss the different nanostructures and nanocomposites used for textile dye remediation.

scholarly journals Nano ZnO and its Perspective in Anti-Cancer Activities

2017 ◽  
Vol 16 (2) ◽  
pp. 41-52
Author(s):  
N Shobhaa ◽  
N Nandab ◽  
B M Nagabhushana
Keyword(s):  
Zinc Oxide ◽  
Metal Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Metal Oxide Nanoparticles ◽  
Nano Particles ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Large Bandwidth ◽  
Anti Cancer ◽  
Potential Applications

Several methods are used to counter the deadly disease cancer. Zinc oxide nanoparticles (ZnO NPs) is one of the metal oxide nanoparticles which had been used in anti-cancer activities due to its large bandwidth and high exciting binding energy and it has potential applications like antibacterial, antifungal, anti-diabetic, anti-inflammatory, wound healing, antioxidant, optic properties and also which holds promise to treat cancer effectively. Studies have shown that Zinc metal oxide nano particles induce cytotoxicity in cancer cells. The mechanism for antitumor could work through apoptosis or the generation of reactive oxygen species or and necrosis, among other possibilities. This review is on some of the most significant antitumor results obtained with zinc oxide nanoparticles depending on their size, surface morphology, methods of preparation and also cytotoxicity result.

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