...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of environmental science and health >Utilization Of Arachis Hypogaea Hull, An Agricultural Waste For The Production Of Activated Carbons To Remove Phenol From Aqueous Solutions
【24h】

Utilization Of Arachis Hypogaea Hull, An Agricultural Waste For The Production Of Activated Carbons To Remove Phenol From Aqueous Solutions

机译：利用荒地花生壳，一种农业废料，用于生产活性炭以去除水溶液中的苯酚

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

Arachis hypogaea hulls, an agricultural waste, were used to prepare activated carbon by chemical activation with zinc chloride under four different activation atmospheres. The most important parameter in chemical activation was found to be the chemical ratio (activating agent/precursor). Carbonization temperature and time are the other two important variables, which had significant effect on the pore structure of carbon. The maximum Brunquer-Emmett-Teller (BET) surface area and micropore volume of the activated carbon was found to be 418 m~2/g and 0.28 cm~3/g, respectively. The activated carbon developed shows substantial capability to adsorb phenol from aqueous solutions. The kinetic data were fitted to the models of intraparticle diffusion, pseudo-second-order, and Lagergren, and followed more closely the pseudo-second-order chemisorption model. The isotherm equilibrium data were well fitted by the Langmuir and Freundlich models. Solution pH has significant effect on adsorption and the maximum uptake of phenol was reported at pH 3.5.
机译：在四个不同的活化气氛下，使用农业废弃物Arachis hypogaea外壳，通过用氯化锌进行化学活化来制备活性炭。发现化学活化中最重要的参数是化学比（活化剂/前体）。碳化温度和时间是另外两个重要的变量，它们对碳的孔结构有重要影响。发现活性炭的最大Brunquer-Emmett-Teller（BET）表面积和微孔体积分别为418 m〜2 / g和0.28 cm〜3 / g。所开发的活性炭显示出从水溶液中吸附苯酚的强大能力。将动力学数据拟合到粒子内扩散模型，拟二级化学模型和Lagergren模型，并更严格地遵循拟二级化学吸附模型。 Langmuir和Freundlich模型很好地拟合了等温线平衡数据。溶液的pH值对吸附有显着影响，据报道在pH 3.5时苯酚的最大吸收量。

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