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Application of Chlorine Dioxide for Restoring the Adsorption Capacity of Activated Carbon Wasted under Industrial Conditions
Journal of Water Chemistry and Technology ( IF 0.6 ) Pub Date : 2020-08-03 , DOI: 10.3103/s1063455x20030078
N. A. Klymenko , L. A. Savchyna , L. K. Patiuk , S. V. Grechanik

Abstract

The effect produced by the treatment of wasted activated carbons with chlorine dioxide on the restoration of the adsorption capacity of sorbents resided for a long time in the adsorbers incorporated into the tap water post-treatment system of a beverage production plant was investigated. The studies were performed by treating the carbon samples with chlorine dioxide solutions of different concentration, steaming at a temperature of 150°C, and combining the treatment with oxidant solutions and steaming on the laboratory bench. The structural and sorption characteristics of carbons were calculated according to the Langmuir and Freundlich models, and the iodine number of the studied samples was also determined. It has been shown that the combination of oxidative treatment with chlorine dioxide and the steaming of activated carbon provides not only the sanitation of the sorbent in an industrial adsorber, but also the restoration of the structural and sorption properties of carbon. The series of performed experiments can restore the adsorption capacity of activated carbon to ~75–85% of the initial level. The degree of restoring the adsorption capacity of sorbents depends on the time of load operation in the adsorption filters. Depending on the time of carbon operation in an adsorber, the microporous space of the sorbent can be completely or partially purified. This fact plays an important part in the removal of organochlorine compounds formed during the final disinfection of water.


中文翻译:

二氧化氯在恢复工业条件下废活性炭吸附能力中的应用

摘要

研究了用二氧化氯处理浪费的活性炭对恢复长期存在于饮料生产厂自来水后处理系统中的吸附器中吸附剂吸附能力的恢复所产生的影响。通过用不同浓度的二氧化氯溶液处理碳样品,在150°C的温度下蒸煮,并将处理与氧化剂溶液结合并在实验室的工作台上蒸煮来进行研究。根据Langmuir和Freundlich模型计算碳的结构和吸附特性,并确定所研究样品的碘值。已经表明,用二氧化氯进行的氧化处理和活性炭的汽化的结合不仅提供了工业吸附器中吸附剂的卫生,而且还提供了碳的结构和吸附性能的恢复。进行的一系列实验可以将活性炭的吸附能力恢复到初始水平的〜75–85%。吸附剂恢复吸附能力的程度取决于吸附过滤器中加载操作的时间。取决于吸附器中碳操作的时间,吸附剂的微孔空间可以被完全或部分净化。这一事实在去除水的最终消毒过程中形成的有机氯化合物方面起着重要作用。而且还可以恢复碳的结构和吸附性能。进行的一系列实验可以将活性炭的吸附能力恢复到初始水平的〜75–85%。吸附剂恢复吸附能力的程度取决于吸附过滤器中加载操作的时间。取决于吸附器中碳操作的时间,吸附剂的微孔空间可以被完全或部分净化。这一事实在去除水的最终消毒过程中形成的有机氯化合物方面起着重要作用。而且还可以恢复碳的结构和吸附性能。进行的一系列实验可以将活性炭的吸附能力恢复到初始水平的〜75–85%。吸附剂恢复吸附能力的程度取决于吸附过滤器中加载操作的时间。取决于吸附器中碳操作的时间,吸附剂的微孔空间可以被完全或部分净化。这一事实在去除水的最终消毒过程中形成的有机氯化合物方面起着重要作用。吸附剂恢复吸附能力的程度取决于吸附过滤器中加载操作的时间。取决于吸附器中碳操作的时间,吸附剂的微孔空间可以被完全或部分净化。这一事实在水的最终消毒过程中对形成的有机氯化合物的去除起着重要作用。吸附剂恢复吸附能力的程度取决于吸附过滤器中加载操作的时间。取决于吸附器中碳操作的时间,吸附剂的微孔空间可以被完全或部分净化。这一事实在去除水的最终消毒过程中形成的有机氯化合物方面起着重要作用。
更新日期:2020-08-03
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