Ozonation for Decolorization and Biodegradability Enhancement of Synthetic Wastewater Containing Reactive Black 5 and Reactive Orange 16
نویسندگان
چکیده
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 mg/Lから12.9 mg/L、オゾン処理単独で7.1 mg/L、オゾン処理と生分解によって4.0 mg/Lとなった。これらの結果から、オゾン処理が生物処理の有効な前処理となることが示唆された。
منابع مشابه
Bisubstrate Kinetic Model for Enzymatic Decolorization of Reactive Black 5 by Coprinus cinereus Peroxidase
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. Experiment...
متن کاملDecolorization of a Reactive Dye by UV-Enhanced Ozonation
In the present study the treatment efficiency of O3 and UV+O3 processes were compared for the oxidation of simulated dyebath effluent containing a mixture of a reactive dye (C.I. Reactive Blue 19) and various dye auxiliary chemicals. The color, COD and TOC removal rates were assessed for different processes. The effect of initial dye concentration and presence of sodium hydroxide and sodium car...
متن کاملEquilibrium and Thermodynamics Studies for Decolorization of Reactive Black 5 by Adsorption onto Acid Modified Banana Leaf Ash
Abstract Background: At present study, acid modified banana leaf ash was used as an adsorbent for the successful removal of Reactive Black 5 (RB5) dye from aqueous environments. Materials and methods: The effect of various operating parameters such as pH of solution, dye concentration, contact time, adsorbent dosage, and the temperature was investigated. Results: Maximum adsorption capacity of ...
متن کاملDecolorization of Continuous Dyeing Wastewater by Ozonation
Since discharge limits are becoming stricter for industrial wastes, textile manufacturers are searching for 3fficient and economical methods of pollution reduction. This is typical of :he situation facing the textile ndustry, especially in the area of :olor pollution emitted into the zarth's waterways. Ozone treatment ;o remove color from wastewater :ould be a solution to the problem of
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Japanese Journal of Water Treatment Biology
سال: 2023
ISSN: ['0910-6758', '1881-0438']
DOI: https://doi.org/10.2521/jswtb.59.33