In the study, Reactive Black 5 (RB5) was removed from synthetic wastewater using Fenton's oxidation (FO) process. Batch experiments were conducted on the samples containing 50, 250 and 500 mg/L of RB5. The study was performed in the systematic optimum value of H2O2 and FeSO4 concentrations, pH and temperature. Optimum pH and temperature for 250 mg/L RB-5 were observed at 3.0 and 40°C respective...

In this research, fabrication and functionalization of MnO2 nanoparticles with cetyltrimethylammonium bromide (MnO2 NPs-CTAB) were confirmed for removal two reactive anionic sulfonated azo dyes: remazol red (RR) black 5 (RB5). The modified nanosorbent was characterized via X-ray diffraction, thermogravimetric analysis, Fourier transform infrared spectroscopy, BET SEM HRTEM studies. Various adju...

In the present study we examined the performance of a thermoalkalophilic bacterial consortium, where the predominant strain was Bacillus sp. SF, in the degradation of Reactive Black 5 (RB5). We used a reactor working in continuous mode and investigated the effects of pH, hydraulic retention time (HRT) and several added salts on colour and chemical oxygen demand (COD) reductions. For the chosen ...

An electrochemical treatment (EC) was applied at different intensities to degrade the chromophoric groups of dyes C.I. Reactive Black 5 (RB5) and C.I. Reactive Blue 7 (Rb7) until uncolored species were obtained. Decolorization rate constants of the azo dye RB5 were higher than the phtalocyanine Rb7 ones. In addition, the EC treatment was more efficient at higher intensities, but these condition...

In this study, the Bohart and Adams’ model taking into account bed depth, and influent dye concentration was studied to exhibit adsorption process of textile dyes (Basic Blue 41 – BB41 and Reactive Black 5 – RB5) in glass columns using tree barks (Eucalyptus camaldulensis). Adsorption capacity coefficient values are determined using the Bohart and Adams’ bed depth service model. The model indic...

High oxygen evolution overpotential and inexpensive Ti/Co3O4/PbO2/(SnO2+Sb2O3) and (Ti/(SnO2+Sb2O3) electrodes were investigated in this work. These electrodes were prepared and used as anodes for removal of Reactive Black 5 (RB5) dye in aqueous solution. In some local cases in Palestine, wastewater color was found to be the only problem in meeting local effluent standards. This investigation r...

Reactive Black 5（RB5）またはReactive Orange 16（RO16）を32 mg/L含む合成廃水を2 Lバッチリアクターでオゾン処理した。RB5とRO16を含む廃水の色度は、オゾン処理（6.3 g－O3/m3, 4 L/min）によって、8分間でそれぞれ835から50、2780から750に減少し、15分間で両者とも検出下限の50未満になった。一次脱色速度定数はRB5が0.35 min－1、RO16が0.47 min－1であった。活性汚泥微生物を用いた生分解試験では、オゾン処理により染料廃液のBOD濃度が増加することが示された。RB5含有廃水の全有機物（TOC）濃度は、生分解単独で8.9 mg/Lから8.4 mg/L、オゾン処理単独で5.8 mg/L、オゾン処理と生分解によって3.3 mg/Lとなった。RO16含有廃水のTOC濃度は、生分解単独で13.9 m...

UNLABELLED Although Mn(2+) is the most abundant substrate of versatile peroxidases (VPs), repression of Pleurotus ostreatus vp1 expression occurred in Mn(2+)-sufficient medium. This seems to be a biological contradiction. The aim of this study was to explore the mechanism of direct oxidation by VP1 under Mn(2+)-deficient conditions, as it was found to be the predominant enzyme during fungal gro...