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Advanced oxidation processes for in-situ production of hydrogen peroxide/hydroxyl radical for textile wastewater treatment: A review

机译：现场氧化用过氧化氢/羟基自由基处理纺织品废水的先进氧化工艺：综述

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摘要

Fenton Process, a type of Advanced Oxidation Processes is an efficient method for treating textile wastewaters. However, excessive use of hydrogen peroxide and catalyst has made this process economically non-feasible. Besides, industrial grade hydrogen peroxide costs 390-500 per ton. One of the means to overcome this problem is the in-situ production of hydrogen peroxide. In this paper, a detailed review was conducted on the generation methods, degradation potential and optimum operating parameters for in-situ production of hydrogen peroxide/hydroxyl radicals. Additionally the scavenging aspect for hydroxyl radicals was also investigated. From this review, it can be concluded that hydroxyl radical is highly oxidative and non selective in nature and its in-situ production can be performed through application of catalyst, ozonation, photocatalysis, electro and microbial fuel cells. Furthermore, optimization of operating parameters can result in an increase in the yield of hydroxyl radicals/hydrogen peroxide. Sonolysis as an auxiliary tool has potential to induce synergetic effects in combination with Advanced Oxidation Processes to increase in-situ hydrogen peroxide production. However, the problem of the scavenging effect is an aspect that needs to be dealt with, as hydroxyl radicals are prone to deactivation by scavengers. Therefore based on the review, it is concluded that insitu production of hydrogen peroxide/hydroxyl radical for treating textile wastewater is economically viable and practically feasible if careful selection of process is conducted through selective research. (C) 2014 Elsevier Ltd. All rights reserved.
机译：Fenton工艺（一种高级氧化工艺）是一种处理纺织品废水的有效方法。但是，过氧化氢和催化剂的过量使用使该方法在经济上不可行。此外，工业级过氧化氢的成本为每吨390-500。解决该问题的方法之一是原位生产过氧化氢。在本文中，对过氧化氢/羟基自由基的产生方法，降解潜力和最佳操作参数进行了详细的综述。另外，还研究了羟基自由基的清除方面。从该综述可以得出结论，羟基自由基本质上是高度氧化且非选择性的，并且其原位生产可以通过施加催化剂，臭氧化，光催化，电和微生物燃料电池来进行。此外，操作参数的优化可以导致羟基自由基/过氧化氢的产率增加。声分解作为辅助工具与先进的氧化工艺相结合，具有潜在的协同作用，可增加原位过氧化氢的产生。然而，清除效果的问题是一个必须解决的方面，因为羟基自由基易于被清除剂减活。因此，基于该综述，可以得出结论，如果通过选择性研究进行仔细的选择，原位生产用于处理纺织品废水的过氧化氢/羟基自由基在经济上是可行的，并且在实践中是可行的。 （C）2014 Elsevier Ltd.保留所有权利。

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