• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Separation and Purification Technology >Effect of characteristics of activated carbon on removal of bromate
【24h】

Effect of characteristics of activated carbon on removal of bromate

机译：活性炭特性对去除溴酸盐的影响

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

This study evaluates how the characteristics of activated carbon (AC) influence the adsorption-reduction of bromate (BrO_3~-) by performing kinetic and isotherm tests. Experimental results reveal that both physical and chemical effects simultaneously affect the adsorption-reduction process. The wood-based carbons contained more mesopores than coconut- and coal-based carbons, resulting in the adsorption of more BrO_3~-. The equilibrium- and maximum-adsorption capacities were calculated as a function of the effect of mesopore volume. The carbon surface chemistry seems to be significant in the adsorption-reduction process. Activated carbons with high pH_(zpc) values and many basic groups exhibit a neutral or positive charge under typical pH conditions, promoting BrO_3~- adsorption-reduction at the carbon surface. The kinetic data obtained from three forms of carbons have been analyzed using three kinetic models—pseudo-first-order, pseudo-second-order and intraparticle diffusion models. Among the kinetic models studied, the intraparticle diffusion was the best applicable model to describe the adsorption of BrO_3~- onto AC.
机译：本研究通过进行动力学和等温线测试来评估活性炭（AC）的特性如何影响溴酸盐（BrO_3〜-）的吸附还原。实验结果表明，物理和化学作用同时影响吸附-还原过程。与椰子和煤基碳相比，木基碳包含更多的中孔，从而导致更多的BrO_3〜-吸附。根据中孔体积的影响计算平衡和最大吸附容量。碳表面化学在吸附还原过程中似乎很重要。具有高pH_（zpc）值和许多碱性基团的活性炭在典型的pH条件下表现出中性或正电荷，从而促进了碳表面BrO_3〜-的吸附还原。使用三种动力学模型（伪一级，伪二级和颗粒内扩散模型）分析了从三种碳形式获得的动力学数据。在研究的动力学模型中，粒子内扩散是描述BrO_3〜-在AC上的吸附的最佳适用模型。

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