نتایج جستجو برای: reactive blue
تعداد نتایج: 226117 فیلتر نتایج به سال:
جذب سطحی با کربن فعال یک روش موثر برای حذف آلاینده های آلی و معدنی از جریانهای آبی و گازی می باشد. استفاده از روش ستونی نیز روشی صنعتی و عملی در جهت حذف آلاینده های آلی از پسابهای صنعتی می باشد. در کار تحقیقاتی حاضر فرآیند ستونی برای حذف و رنگ زدایی پساب سنتزی نساجی و رنگرزی مورد مطالعه قرار گرفته است. برای مطالعه قدرت و توانایی روش ستونی در حذف رنگهای آلی با کربن فعال گرانوله، ماده رنگزایreact...
در این تحقیق نانوفوتوکاتالیست zno اصلاح شده با استفاده از فلزات ag و al با درصد های مولی مختلف به روش احتراقی و با استفاده از ماکرویو سنتز شد. ساختار و مورفولوژی نانوپودرها با استفاده از پراش اشعه ایکس ، طیف مادون قرمز ( فوریه) و میکروسکوپ الکترونی روبشی بررسی گردید . پراش اشعه ایکس ساختار وورتزیتی شبکه کریستالی هگزاگونال از zno را نشان داد و اندازه کریستالی در نمونه اکسید روی در حدود 7/45 نانو...
Photodynamic therapy (PDT) is a comparatively novel therapeutic method involving a safe light source and a light-sensitive substance, termed as photosensitizers (PSs), such as methylene blue (MB), toluidine blue (TBO), sulfonated aluminum phthalocyanine, chlorine derivatives, nontoxic indocyanine green (ICG), and curcumin (CUR). (1) The combination of a nontoxic PS with low-intensity visible li...
background: the aim of this study was to quantify the number of mast cells in focal reactive hyperplastic lesions of the oral cavity and to compare these two number of mast cells in normal gingival tissues and to correlate their presence with the state of connective tissue changes in reactive lesions and probably suggest a role for mast cells in these lesions. materials and methods: patient rec...
The open reading frame alr1585 of Anabaena sp. strain PCC 7120 encodes a heme-dependent peroxidase (Anabaena peroxidase [AnaPX]) belonging to the novel DyP-type peroxidase family (EC 1.11.1.X). We cloned and heterologously expressed the active form of the enzyme in Escherichia coli. The purified enzyme was a 53-kDa tetrameric protein with a pI of 3.68, a low pH optima (pH 4.0), and an optimum r...
Background and Objective: Colors are complex structural materials, which enter into the environment due to finishing processes of textiles such as dyeing and printing. Reactive Blue 19 dye is used widely in the textile industry within the country. Therefore, we investigated the efficiency of the Russian knapweed flower powder as natural adsorbent in the removal of Reactive Blue 19 dye from sy...
In this work La0.7Sr0.3MnO3 , one group of nanosized perovskite-type oxides were prepared by sol-gel method. The perovskite structure has been characterized by X-ray diffraction (XRD) , scanning electron microscopy (SEM) , energy dispersive X-ray spectrometer (EDX) and Fourier transform infrared (FTIR) . The nanoparticles showed the excellent adsorption properties towards reactive blue 4 (RB4) ...
Decolorization of aqueous solutions containing ionic dyes (Reactive Blue 19 and Acid Black 172) by a TFC commercial polyamide nanofilter (NF) in a spiral wound configuration was studied. The effect of operating parameters including feed concentration (60-180 mg/l), pressure (0.5-1.1 MPa) and pH (6-10) on dye removal efficiency was evaluated. The response surface method (RSM) was utilized for th...
Background and Objective: Dyes have complicated structures, usually toxic and resistant to biological treatment which entered to environment by industrial waste streams. The aim of this study was the survey of isotherm and kinetic adsorption studies of Reactive Blue 19 (RB19) dye onto Barberry stems powder from textile industrial wastewater. Materials and Methods: This study was done i...
Background and purpose: Colors are toxic organic materials with complex structures used in textile production stages such as dyeing, finishing and printing that cause environmental problems. One of the most widely used colorant in textile is reactive blue 19 dye. This study aimed to examine the feasibility of TiO2 as catalysts and sonochemistry process for discoloration of reactive blue 19 from...
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