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首页> 外文期刊>Separation and Purification Technology >Degradation of Crystal Violet by catalytic ozonation using Fe/activated carbon catalyst
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Degradation of Crystal Violet by catalytic ozonation using Fe/activated carbon catalyst

机译：铁/活性炭催化剂催化臭氧氧化降解紫罗兰

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An Fe/activated carbon catalyst was prepared and used in catalytic ozonation of Crystal Violet. The catalyst was characterized by SEM and XRD, and the results showed that the iron loaded on activated carbon existed in alpha-FeOOH phase. An improved effect was achieved in the decolorization of Crystal Violet via catalytic ozonation in the presence of Fe/activated carbon compared with ozonation alone. Almost complete decolorization (>96%) of 400 mg/L Crystal Violet was achieved after 30 min reaction under the conditions of 4.44 mg/min ozone dosage, 300 mL/min gas flow rate, 2.5 g/L catalyst dosage and pH 7, while 57% COD removal efficiency was obtained when the reaction time was prolonged to 90 min. The acute toxicity to Daphnia magna decreased during 90 min of catalytic zonation. The main intermediates were separated and identified by gas chromatography-mass spectrometry (GC-MS) technique and an initial degradation pathway of Crystal Violet was proposed. (C) 2015 Elsevier B.V. All rights reserved.
机译：制备了Fe /活性炭催化剂，并将其用于结晶紫的催化臭氧化。用SEM和XRD对催化剂进行了表征，结果表明负载在活性炭上的铁以α-FeO​​OH相存在。与单独的臭氧化相比，在存在Fe /活性炭的情况下，通过催化臭氧化对结晶紫进行脱色可实现更好的效果。在4.44 mg / min臭氧剂量，300 mL / min气体流量，2.5 g / L催化剂剂量和pH 7的条件下反应30分钟后，400 mg / L结晶紫几乎完全脱色（> 96％）。当反应时间延长至90分钟时，COD去除率为57％。在90分钟的催化分区内，对大型蚤（Daphnia magna）的急性毒性降低了。通过气相色谱-质谱（GC-MS）技术分离和鉴定了主要中间体，并提出了结晶紫的初步降解途径。 （C）2015 Elsevier B.V.保留所有权利。

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