• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Fe(II) adsorption onto natural polymers derived from low-grade lignites
【24h】

Fe(II) adsorption onto natural polymers derived from low-grade lignites

机译：Fe（II）吸附到低级褐煤衍生的天然聚合物上

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

In comparison with conventional chemical treatment methods for Fe(II) ions, adsorption and ion exchange are considered more easily applicable and economical, depending on the material used. Polymeric rnaterials are the examples used in these commonly applied removal processes. In this study, the adsorption of Fe(II) ions from aqueous solutions onto two different natural polymers, insoluble humic acids (IHAs) extracted from low-grade lignites from Beysehir and Ermenek (in the central Anatolia region, Konya, Turkey), was investigated. The IHAs were synthesized through a series of acid-base reactions, and the obtained precipitates were chemically stable and had about 40% humic matter together with functional carboxyl and hydroxyl groups. The effects of the time and initial metal concentration on the effectiveness of the IHAs for Fe(II) adsorption were determined through batch experiments; the adsorption isotherms and capacities were calculated. The IHAs were effective, with capacities of 59 mg/g for the Beysehir IHA and 57 mg/g for the Ermenek IHA, for Fe removal under neutral pH conditions. The adsorption followed mainly a Freundlich isotherm for both IHAs, and the calculated adsorption rates were 0.86 for the Beysehir IHA and 0.81 for the Ermenek IHA. This indicated that the effectiveness of the Beysehir IHA was slightly higher than that of the Ermenek IHA. The results confirmed the real possibility of the practical application of IHAs for the separation of Fe(II) in aqueous systems. (C) 2007 Wiley Periodicals, Inc.
机译：与用于Fe（II）离子的常规化学处理方法相比，根据所使用的材料，吸附和离子交换被认为更容易应用且更经济。聚合纳米材料是在这些通常应用的去除工艺中使用的实例。在这项研究中，Fe（II）离子从水溶液中吸附到两种不同的天然聚合物上，即从Beysehir和Ermenek（位于土耳其安纳托利亚中部地区）的低品位褐煤中提取的不溶性腐殖酸（IHA）。调查。通过一系列的酸碱反应合成了IHA，并且所获得的沉淀物是化学稳定的，并且具有约40％的腐殖质以及功能性羧基和羟基。通过分批实验确定了时间和初始金属浓度对IHAs吸附Fe（II）有效性的影响。计算吸附等温线和容量。这些IHA有效，在中性pH条件下对Beysehir IHA的去除能力为59 mg / g，对Ermenek IHA的去除能力为57 mg / g。两种IHA的吸附主要遵循Freundlich等温线，并且Beysehir IHA的计算吸附率为0.86，Ermenek IHA的计算吸附率为0.81。这表明，Beysehir IHA的有效性略高于Ermenek IHA。结果证实了实际应用IHA分离水系统中Fe（II）的真实可能性。 （C）2007 Wiley期刊公司

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