...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Pollution >Application of solid waste of ductile cast iron industry for treatment of wastewater contaminated by reactive blue dye via appropriate nano- porous magnesium oxide
【24h】

Application of solid waste of ductile cast iron industry for treatment of wastewater contaminated by reactive blue dye via appropriate nano- porous magnesium oxide

机译：球墨铸铁工业固体废物通过适当的纳米多孔氧化镁处理活性蓝染料污染的废水的应用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The solid waste of ductile iron industry, which contains at least 88.0% magnesium oxide, is one of the toxic materials, leading to land contamination. On the other hand, the removal of reactive dyes from wastewaters is difficult required effective adsorbent like nano-porous MgO. The novelty of present investigation is based on nano-porous magnesium oxide production by precipitation from the solid waste to treat the wastewaters contaminated by reactive dye which is abundantly used in the textile industry. In order to improve the adsorptive properties of extracted MgO powder, the combinations of surfactants, containing cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate (SDS) and polyoxyethylene octyl phenyl ether (TX100) were applied based on the mixture design algorithm in the precipitation. The effects of processing factors such as surfactant composition, powder calcination temperature, surfactant dose and pH were evaluated on the removal efficiency. The results revolved that the combination of SDS and TX100, 1:1, plays an effective role in the production of particles with the appropriate average pore size, 16 nm. The adsorbent prepared in the optimum condition indicated a significant affinity for the removal of reactive dye which shows relatively pH-independent efficiency in the range of 3-9. The applied producer for fabrication of adsorbent eventually overcomes the pH-dependent problem for the toxic dye uptake, leading to produce the adsorbent with maximal adsorption capacity of 1000 mg g(-1). (C) 2019 Elsevier Ltd. All rights reserved.
机译：球墨铸铁行业的固体废物至少含有88.0％的氧化镁，是有毒物质之一，导致土地污染。另一方面，难以从废水中去除反应性染料是必需的有效吸附剂，如纳米多孔MgO。本研究的新颖性是基于通过从固体废物中沉淀来生产纳米多孔氧化镁，以处理被纺织工业中广泛使用的被活性染料污染的废水。为了提高提取的MgO粉末的吸附性能，在沉淀过程中，基于混合物设计算法，使用了含有十六烷基三甲基溴化铵（CTAB），十二烷基硫酸钠（SDS）和聚氧乙烯辛基苯基醚（TX100）的表面活性剂组合。评估了诸如表面活性剂组成，粉末煅烧温度，表面活性剂剂量和pH等处理因素对去除效率的影响。结果表明，SDS和TX100的比例为1：1的组合在生产具有适当平均孔径（16 nm）的颗粒中起着有效作用。在最佳条件下制备的吸附剂对去除活性染料具有显着的亲和力，在3-9的范围内显示出相对于pH无关的效率。吸附剂制造的应用生产商最终克服了有毒染料吸收的pH依赖性问题，从而生产出最大吸附容量为1000 mg g（-1）的吸附剂。 （C）2019 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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