• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Polymers and the Environment >Aminated Acrylic Fabric Waste Derived Sorbentfor Cd(Ⅱ) Ion Removal from Aqueous Solutions: Mechanism, Equilibria and Kinetics
【24h】

Aminated Acrylic Fabric Waste Derived Sorbentfor Cd(Ⅱ) Ion Removal from Aqueous Solutions: Mechanism, Equilibria and Kinetics

机译：胺化的丙烯酸织物废物衍生的索入镭（Ⅱ）离子去除水溶液：机理，均衡和动力学

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

An aminated acrylic fiber waste has been utilized as an adsorbent material for the removal of Cd(II) ions from aqueous solution after treatment of acrylic fiber waste with hydroxylamine hydrochloride under basic conditions, and characterized for surface chemistry, surface morphology and textural properties. The ability of this sorbent to adsorb Cd(II) ions was examined via batch adsorption methods, studying the effect of pH, sorbent and sorbate concentrations, as well as contact time. Results obtained confirm that this sorbent was effective for Cd(II) ion adsorption, with uptakes promoted by high active site density, however, the adsorption process is independent of sorbent surface area. The values obtained exceed those previously reported within the literature. Isotherm analysis using arrange of two- and three- parameter models, evaluated using non-linear regression methods with error analysis, showed that the Langmuir isotherm model most appropriately described the experimental data obtained, indicating mono layer adsorption occurs. Kinetic analysis using arrange of models in their non-linear forms provided mechanistic information, showing that pseudo -second-order behavior is involved. The synthesized aminated acrylic fiber waste derived sorbents offer significant potential for the removal of Cd(II) ions from aqueous solution through a mechanism of chelation between the electron- donating oxygen-and nitrogen-containing groups in the sorbent and the electron-accepting Cd(II) ions.
机译：胺化丙烯酸纤维废物已被用作吸附材料，用于在碱性条件下用羟胺处理丙烯酸纤维废物后从水溶液中除去CD（II）离子，并表征表面化学，表面形态和纹理性质。通过分批吸附方法检查该吸附剂对吸附CD（II）离子的能力，研究pH，吸附剂和山梨酸盐浓度的影响，以及接触时间。得到的结果证实，该吸附剂对于CD（II）离子吸附有效，具有高活性位点密度促进的摄取，然而，吸附过程与吸附剂表面积无关。获得的值超过先前在文献中报告的值。使用非线性回归方法进行误差分析的非线性回归方法评估的等温分析，显示Langmuir等温模型最适当描述所获得的实验数据，表明单层吸附。使用模型在其非线性表单中排列的动力学分析提供了机械信息，显示涉及伪排序的行为。合成的胺化丙烯酸纤维废弃物衍生的吸附剂具有通过吸附剂中的电子提供氧和含氮基团之间的螯合机制从水溶液中除去CD（II）离子的显着潜力和通过吸附剂中的含氮基团和电子接受的CD（ II）离子。

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