Rani Manviri, Shanker Uma, Jassal Vidhisha
Department of Chemistry, Dr B R Ambedkar National Institute of Technology Jalandhar, Punjab, 144011, India.
Department of Chemistry, Dr B R Ambedkar National Institute of Technology Jalandhar, Punjab, 144011, India.
J Environ Manage. 2017 Apr 1;190:208-222. doi: 10.1016/j.jenvman.2016.12.068. Epub 2017 Jan 2.
Organochlorines (OCs) are the most hazardous class of pesticides, therefore, banned or restricted in several countries. The major sources of OCs include food industries, agriculture and sewage wastes. Their effluents discharged into the water bodies contain extremely high concentration of OCs which ultimately causes environmental concern. Because of their high persistence, toxicity and potential to bioaccumulation, their removal from wastewater is imperative. The degradation techniques are now advanced using nanomaterials of various kinds. During the last few years, nanoparticles such as TiO and Fe are found to be excellent adsorbents and efficient photocatalysts for degrading more or less whole OCs as well as their toxic metabolites, which opens the opportunities for exploring various other nanoparticles as well. It is noteworthy that such methodologies are economic, fast and very efficient. In this review, the detailed information on different types of OC pesticides, their metabolites, environmental concern and present status on degradation methods using nanoparticles have been reviewed. An attempt has also been made to highlight the research gaps prevailing in the current research area.
有机氯化合物（OCs）是最具危害性的一类农药，因此在多个国家被禁止或限制使用。OCs的主要来源包括食品工业、农业和污水废物。它们排放到水体中的废水含有极高浓度的OCs，最终引发了环境问题。由于其高持久性、毒性和生物累积潜力，必须从废水中去除它们。目前利用各种纳米材料的降解技术已经很先进。在过去几年中，发现诸如TiO和Fe等纳米颗粒是出色的吸附剂和高效的光催化剂，可降解几乎所有的OCs及其有毒代谢物，这也为探索其他各种纳米颗粒提供了机会。值得注意的是，此类方法经济、快速且非常有效。在本综述中，已对不同类型的OC农药、其代谢物、环境问题以及使用纳米颗粒的降解方法现状进行了详细综述。还试图突出当前研究领域中存在的研究空白。
