• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文OA文献 >The effect of homogeneous catalyst for the degradation of sodium dodecylbenzene sulfonate in water by means of ultrasonic irradiation
【2h】

The effect of homogeneous catalyst for the degradation of sodium dodecylbenzene sulfonate in water by means of ultrasonic irradiation

机译：均相催化剂对超声降解水中十二烷基苯磺酸钠的影响。

页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Linear Alkylbenzene Sulfonate (LAS) is a major anionic surfactant used widely in industrial detergents and the production of household products throughout the world because of its effectiveness. Its presence in wastewaters may cause environmental concern. Ultrasound has proven to be a very useful tool in enhancing the reaction rates in a variety of reacting systems. Additionally, it has successfully increased and enhanced the removal and destruction of volatile compounds in aqueous solution. The aim of this research is to study the treatment of synthetic aqueous solutions containing a commercial Linear Alkylbenzene Sulfonate (LAS), namely Sodium Dodecylbenzene Sulfonate (SDBS), by means of ultrasound irradiation. The possibility of coupling ultrasound with a suitable oxidation catalyst to improve treatment efficiency will also be investigated. HPLC, TOC, COD and pH analyses will be carried out to investigate the effect of degradation of SDBS. In this research, SDBS degradation with three different treatments (US alone, US with H2O2and US with Fenton reagent) was investigated. All treatment presented in this research were performed in triplicate by using sonication bath at 30 °C, 40 kHz , 500 W and sonication time of 120 min. From the discussion, by using the US + Fenton treatment appears to be the highest in terms of % TOC removal which is 67% and followed by the others two treatment which is US + H2O2 and US alone treatment have been achieved at 55% and 12%. It was found that the main degradation of SDBS proceeds via a reaction with OH radicals and since SDBS is anionic surfactant of negligible volatility. The initial degradation rate (d[SDBS]/dt, within the first 30 min) increases by using the US + Fenton treatment which is 0.68 M/min followed by US + H2O2 and US alone were achieved at 0.52 M/min and 0.44 M/min respectively.
机译：线性烷基苯磺酸盐（LAS）是一种主要的阴离子表面活性剂，由于其有效性，在世界范围内广泛用于工业洗涤剂和家用产品的生产中。它在废水中的存在可能引起环境问题。事实证明，超声波是提高各种反应系统中反应速率的非常有用的工具。另外，它已经成功地增加和增强了水溶液中挥发性化合物的去除和破坏。这项研究的目的是通过超声波辐照来处理含有市售线性烷基苯磺酸盐（LAS），即十二烷基苯磺酸钠（SDBS）的合成水溶液。还将研究将超声与合适的氧化催化剂偶联以提高治疗效率的可能性。将进行HPLC，TOC，COD和pH分析，以研究SDBS降解的影响。在这项研究中，研究了SDBS在三种不同处理方式下的降解情况（仅美国使用，H2O2使用美国和Fenton试剂使用美国）。本研究中提出的所有处理均通过在30°C，40 kHz，500 W和120分钟的超声处理时间下使用超声浴一式三份进行。从讨论中可以看出，使用US + Fenton处理似乎是最高的TOC去除率，为67％，其次是其他两种处理，分别为US + H2O2和US处理，分别达到55％和12 ％。发现SDBS的主要降解通过与OH基的反应进行，并且由于SDBS是挥发性可忽略的阴离子表面活性剂。使用US + Fenton处理的初始降解速率（在最初的30分钟内为d [SDBS] / dt）增加，为0.68 M / min，随后使用US + H2O2，仅在0.52 M / min和0.44 M的条件下达到US / min。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号