...
首页> 外文期刊>Journal of industrial and engineering chemistry >Arsenic(III) removal performances in the absence/presence of groundwater occurring ions of agglomerated Fe(III)-Al(III) mixed oxide nanoparticles
【24h】

Arsenic(III) removal performances in the absence/presence of groundwater occurring ions of agglomerated Fe(III)-Al(III) mixed oxide nanoparticles

机译:附聚的Fe(III)-Al(III)混合氧化物纳米颗粒在不存在地下水存在离子的情况下去除砷(III)的性能

获取原文
获取原文并翻译 | 示例
           

摘要

Performances of As(III) adsorption by agglomerated nanoparticles of calcined (250 °C) hydrous Fe(III)-Al(III) mixed oxide (NHIAO-250 °C) were investigated at 30 °C and pH 7.0 in the absence/presence of background ions occurring in groundwater. Kinetics and equilibrium data described, respectively, the pseudo-second order and the Langmuir isotherm equations well. Higher (15-35%) monolayer capacity (58.30 ± 3.15 mg g~(-1)) of As(III) system in absence of any background ions implied the adverse influence of the incorporated ions over As(III) sorption. Increased entropy (positive △S~°) was responsible for the endothermic reactions (positive △H~°) and spontaneous nature (△G° = negative). Thomas model described the fixed-bed breakthrough curves of As(III) removal from spiked groundwater well.
机译:在30°C和pH 7.0下,在不存在/存在的条件下研究了煅烧(250°C)含水Fe(III)-Al(III)混合氧化物(NHIAO-250°C)的团聚纳米颗粒对As(III)的吸附性能在地下水中发生的背景离子。动力学和平衡数据分别描述了伪二级和Langmuir等温方程。在没有任何背景离子的情况下,较高的(15-35%)单层容量(58.30±3.15 mg g〜(-1))的As(III)系统暗示掺入的离子对As(III)的吸附有不利影响。熵增加(正△S〜°)是吸热反应(正△H〜°)和自发性(△G°=负)的原因。 Thomas模型描述了从加标地下水井中去除As(III)的固定床穿透曲线。

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