نتایج جستجو برای: Acid Orange 7
تعداد نتایج: 1345313 فیلتر نتایج به سال:
the photocatalytic degradation of two anionic azo dyes acid red88 (ar 88) and acid orange 7 (ao7) was investigated in aqueous solution using a tio2-containing hydrogel and uv light. the ph-sensitive hydrogel poly (styrene-alt-maleic anhydride) (psma), was synthesized and crosslinked in the presence of melamine and tio2 nanoparticles which results in entrapment of tio 2 into the melamine-grafted...
Background and Objectives: The dyestuff manufacturing and textile industries consume a high volume of water and produce a great amount of wastewater containing various toxic substances. Different methods are used to remove dye compounds from wastewaters. Removal of dyes from water by adsorption processes received considerable attention and a number of studies focused on the adsorption of some d...
in this study, a simple, rapid and selective method was developed for the determination of dexamethasone. the proposed method is based on inhibitory effect of dexamethasone on the oxidation of orange-g by bromate in sulfuric acid media. the reaction was followed spectrophotometrically at 478.5 nm (?max). under optimum experimental conditions, (72.6 ?mol l-1 of orange-g, 0.76 mol l-1 of h2so4, 0...
فاضلاب های صنایع نساجی و رنگرزی به دلیل دارا بودن انواع آلاینده های آلی و غیر آلی، یکی از عمده ترین منابع آلاینده محیط زیست به شمار می روند. تا کنون روش های مختلفی از قبیل انعقاد و لخته سازی، ازن زنی، فرآیند فنتون و سایر روش ها برای تصفیه این نوع از فاضلاب ها مورد استفاده قرار گرفته است. در این پژوهش از پودر آهن به عنوان یک ماده ارزان قیمت و موثر که به آسانی در دسترس بوده و مورد استفاده قرار می...
فاضلاب های صنایع نساجی و رنگرزی به دلیل دارا بودن انواع آلاینده های آلی و غیر آلی، یکی از عمده ترین منابع آلاینده محیط زیست به شمار می روند. تا کنون روش های مختلفی از قبیل انعقاد و لخته سازی، ازن زنی، فرآیند فنتون و سایر روش ها برای تصفیه این نوع از فاضلاب ها مورد استفاده قرار گرفته است. در این پژوهش از پودر آهن به عنوان یک ماده ارزان قیمت و موثر که به آسانی در دسترس بوده و مورد استفاده قرار می...
BACKGROUND AND AIM Water resources pollution control is one of the main challenges of our time for researchers. Colored wastewater discharges caused by textile industry activities has added to the concern. In this study, removal of Acid Orange 7 dye (AO7) using Kenya Tea residue absorbent (granular) has been studied. METHODS This cross-sectional study was conducted in 2016. In this work, init...
Four selected azo dyes (acid orange 6, acid orange 7, methyl orange and methyl red) were completely decolourised in the presence of anaerobic granular sludge, while only methyl red was degraded in aerobic conditions using a conventional activated sludge. Additional experiments with culture broth devoid of cells showed that anaerobic decolourisation of azo dyes was performed by extracellular red...
BACKGROUND Decolorization of hazardous synthetic dyes using laccases in both free and immobilized form has gained attention during the last decades. The present study was designed to prepare immobilized laccase (purified from Paraconiothyrium variabile) on porous silica beads followed by evaluation of both free and immobilized laccases for decolorization of two synthetic dyes of Acid Blue 25 an...
Background and Objectives: The dyestuff manufacturing and textile industries consume a high volume of water and produce a great amount of wastewater containing various toxic substances. Removal of dyes from water by absorption processes has received considerable attention. In the present study, removal of Acid orange7 from aqueous solution using the mesoporous (Mobil Composition of Matter No-41...
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