نتایج جستجو برای: rb5
تعداد نتایج: 121 فیلتر نتایج به سال:
در میان آلاینده های آلی، ترکیب های رنگی مشکلات زیست محیطی جدی ایجاد می نمایند. در این مطالعه تجزیه و حذف رنگ rb5 توسط دو روش مورد بررسی قرار گرفت. الف) تجزیه رنگ rb5 توسط امواج فراصوت به تنهایی: در این روش از امواج فراصوت با فرکانس بالا (900khz) استفاده شد. متغیر های مورد بررسی شامل زمان تماس، دما و غلظت آلاینده رنگی بودند. بر اساس نتایج بدست آمده، سینتیک تجزیه رنگ با مدل شبه مرتبه دوم تطابق ...
industrial wastewater included the dyes one of the important sources of environmental pollution that founded in loom wastewater which are harmful for human health and environment. therefore, the purpose of this research was investigated removal of rb5 dye from aqueous solution by using of adsorption onto activated red mud as an cheap adsorbent. this research was experimental- laboratorial study...
Decolorization of Reactive Black 5 (RB5) was investigated by heterogeneous photocatalysis using N-doped TiO2. TiO2 photocatalysts were synthesized means a sol-gel process. X-ray diffraction performed the characterization samples, scanning electron microscopy and photoelectron spectroscopy measurements. Photocatalytic activity samples assessed following decolorization degradation efficiency RB5....
in this study, decolorization of the diazo dye, reactive black 5 (rb5) in a coprinus cinereus peroxidase-catalyzed reaction has been investigated. a bisubstate kinetic model for the reaction rate based on the ping-pong mechanism was assumed for the enzymatic decolorization. experimentswere conducted at different rb5 and hydrogen peroxideconcentrations in a batch mannerto estimate the intrinsic ...
In this work, the degradation performance of Fe2+/PAA/H2O2 on three typical pollutants (reactive black 5, ANL, and PVA) in textile wastewater was investigated comparison with Fe2+/H2O2. Therein, had a high removal RB5 (99%) mainly owing to contribution peroxyl radicals and/or Fe(IV). Fe2+/H2O2 showed relatively PVA (28%) resulting from ·OH. comparative removals ANL. Additionally, more sensitive...
The removal of the azo dyes Orange II (OII) and Reactive Black 5 (RB5) from aqueous solutions was studied using three types adsorbents derived chitosan: unmodified chitosan beads (un-Ch), tuned with a deep eutectic solvent (DES) composed choline chloride:urea at 1:2 molar ratio (Ch-DES), along FeO nanoparticles added to modified DES (Ch-FeO-DES). Both were effectively removed in 3–4 h when Ch-D...
در این تحقیق بررسی پارامترهای مؤثر در حذف دو رنگزای آزو RB5 و RR120 بهروش فتوکاتالیستی توسط نانو ذرات TiO2 تثبیت شده بر بستر بتنی مورد مطالعه قرار گرفت و اثر پارامترهای مؤثر شامل میزان فتوکاتالیست، pH اولیه، غلظت آلاینده و توان UV بررسی شد. نتایج نشان داد افزایش غلظت رنگزا و کاهش pH باعث کاهش نرخ رنگبری میشود. همچنین بهمنظور مقایسه رنگبری، حذف حلقههای بنزنی و فنلی بهترتیب در طول موجهای UV2...
Background and Aim: The development of industry has recently led to the release of 2 × 105 tons of colored wastewater into the environment. The presence of these solutions due to their toxicity and carcinogenic potential can be a threat to human health. The aim of this study was to investigate the efficiency of MWCNTs-CuNiFe2O4 nanocomposite in activating peroxymonosulfate (PMS) for degradatio...
The batik industry generates large amounts of highly colored wastewater. Azo dyes in wastewater can cause environmental pollution. In this study, synthetic containing 32 mg/L Reactive Black 5 (RB5) and Orange 16 (RO16) was treated by ozonation a 2 L batch reactor. color unit reduced from 4240 to 70 after 10 min below 50 15 (7.3 g O3/m3, 4 L/min). first-order decay constant for determined be 1.1...
An isolated fungus, Aspergillus foetidus had the ability to decolourize growth unsupportive medium containing 100 mg L(-1) of reactive black 5 (RB5) dye with >99% efficiency at acidic pH (2-3). Pre-treatment of fungal biomass by autoclaving or exposure to 0.1M sodium hydroxide facilitated more efficient uptake of dye as compared to untreated fungal biomass. Pre-equilibrium biosorption of RB5 dy...
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