文摘

合成沸石fromcrop农药清除废物及其应用

作者(年代):Uzaira Rafique Nosheen Ayub

可持续发展是著名的有前途的文化和多方面的方法包括环境、生态、科学、经济、社会和政治问题的全球意义。关键的方面可持续发展的能源和化学角度开发更多的可再生能源和产品来减少污染。农业残留物吸引广泛关注对可再生能源发电和大型燃烧。这些产品的燃烧导致的一代的灰烬的硅源合成的沸石吸附剂。本研究旨在合成的沸石浪费农业地区提出一个废物管理系统。实现目标,浪费小麦(吸管)和化学(鲸蜡trimethylammoniumbromide CTAB)改性小麦混合了铝箔的解决方案,分别获得Si-Al沸石。合成的产品特点是傅里叶变换红外光谱(FTIR)和x射线衍射(XRD)。合成沸石的吸附效率评估农药的去除(2,4 -滴)。红外光谱峰Si-O——(Si)和Si-O——(Al) 1200 - 400 cm - 1确认铝矽酸盐的合成沸石。表征材料在XRD显示晶体形态和纳米级粒子(0.24海里)的合成沸石。 The two newly synthesized zeolites were applied as adsorbents for the removal of selected pesticides (2, 4-D (herbicide) and carbaryl (insecticide)) used on agricultural fields. The results indicated that modified zeolites are better adsorbents with percent removal of 5 and 15 orders higher for carbaryl and 2,4-D, respectively. This is attributed to the enhanced surface area and porosity due to surfactant (CTAB) addition. The sequence of removal on Zeolites suggests that basic insecticide (carbaryl) is less efficiently removed than acidic 2, 4-D. The study proposes novel agro-based adsorbents for management of pesticides in agricultural settings.