• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>American Journal of Analytical Chemistry >Aqueous Lead Removal under Optimized Conditions Using Phosphoric Acid Activated Coconut Coir Activated Carbon
【24h】

Aqueous Lead Removal under Optimized Conditions Using Phosphoric Acid Activated Coconut Coir Activated Carbon

机译：使用磷酸活性椰子益官活性炭在优化条件下进行含水铅去除

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The global burden of heavy metal environmental pollution remains one of the most challenging issues to be addressed urgently. Lead (Pb) has been well recognized as a toxic environmental pollutant. The main objective of this study was to examine the adsorption efficiency of phosphoric activated coconut coir activated carbon for lead (II) removal from an aqueous solution. Synthesized activated carbon was characterized before and after the adsorption of Pb(II) by powder X-Ray diffraction, Fourier transforms infrared spectroscopy and scanning electron microscopy coupled with energy dispersive X-Ray. Furthermore, the removal efficiency of Pb(II) of synthesized activated carbon was tested with different concentrations of Pb(II) solutions, pH levels, adsorbent dosages, and contact time. Atomic absorption spectroscopy was used to analyze the Pb(II) concentrations in water samples. The maximum Pb(II) removal percentage of 100% was obtained with 50 mL of 5 mg/L Pd(II) ion solution and 0.20 g of the synthesized activated carbon. Adsorption data were well fitted with the Freundlich adsorption isotherm model, and adsorption kinetics were fitted with the pseudo-second-order kinetic model with R ~(2) of 0.99. These results conclude that the synthesized activated carbon can be used as a potential sorbent for the removal of lead from wastewaters.
机译：全球重金属环境污染的负担仍然是紧急解决的最具挑战性问题之一。铅（PB）得到了很好的认可，作为有毒的环境污染物。本研究的主要目的是检测磷活化的椰子益官活性炭的吸附效率，用于从水溶液中除去铅（II）。通过粉末X射线衍射吸附Pb（II）的吸附之前和之后的合成活性炭，傅里叶转化红外光谱和扫描电子显微镜与能量分散X射线。此外，用不同浓度的Pb（II）溶液，pH水平，吸附剂剂量和接触时间来测试合成活性炭Pb（II）的去除效率。原子吸收光谱法用于分析水样中的Pb（II）浓度。用50ml 5mg / L Pd（II）离子溶液和0.20g合成的活性炭获得100％的最大Pb（II）除去百分比。吸附数据充分配备Freundlich吸附等温线模型，并配有吸附动力学，配有伪二阶动力学模型，其中纯度二阶动力学模型为 R〜（2）为0.99。这些结果得出结论，合成的活性炭可用作从废水中除去铅的潜在吸附剂。

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