• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Materials >Egg By-Products as a Tool to Remove Direct Blue 78 Dye from Wastewater: Kinetic Equilibrium Modeling Thermodynamics and Desorption Properties
【2h】

Egg By-Products as a Tool to Remove Direct Blue 78 Dye from Wastewater: Kinetic Equilibrium Modeling Thermodynamics and Desorption Properties

机译：鸡蛋副产品作为去除废水中直接蓝78染料的工具：动力学平衡模型热力学和解吸特性

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Eggshell, a waste material from food manufacturing, can be used as a potential ecofriendly adsorbent for the elimination of textile dyes from water solutions. The adsorption process was evaluated varying factors such as initial dye load, contact time, pH, quantity of adsorbent, and temperature. The initial dye load (Direct Blue 78) was in the range of 25–300 mg/L. The kinetics of adsorption were analyzed using different models, such as pseudo-first-order, pseudo-second-order, and intraparticle diffusion model. Also, the experimental data at equilibrium were studied using Freundlich, Langmuir, and Temkin isotherms. The kinetics followed pseudo-second-order, then pseudo-first-order, and finally the model of intraparticle diffusion. The results obtained for data at equilibrium follow the order: Freundlich > Langmuir > Temkin. The adsorption equilibrium showed a maximum capacity of adsorption (q ) of 13 mg/g at pH 5, and using 0.5 g of eggshell. Dye adsorption was enhanced with increasing temperatures. The thermodynamic study revealed the spontaneity and endothermic nature of the adsorption process. The desorption study shows that the eggshell could be reused in different adsorption/desorption cycles. A novel advanced oxidation process could degrade more than 95% of the dye. The results show that eggshell is a waste material useful to remove hazardous dyes from wastewater, which may alleviate the environmental impact of dyeing industries.
机译：蛋壳是食品生产中的一种废料，可以用作潜在的环保吸附剂，以消除水溶液中的纺织品染料。评估吸附过程的各种因素，例如初始染料负载，接触时间，pH，吸附剂数量和温度。初始染料负载量（直接蓝78）为25-300 mg / L。使用不同的模型分析吸附的动力学，例如伪一阶，伪二阶和粒子内扩散模型。同样，使用Freundlich，Langmuir和Temkin等温线研究了平衡状态下的实验数据。动力学遵循伪二级，然后伪一级，最后是粒子内扩散模型。平衡数据获得的结果遵循以下顺序：Freundlich> Langmuir> Temkin。吸附平衡显示在pH 5和使用0.5 g蛋壳的情况下，最大吸附容量（q）为13 mg / g。染料的吸附随着温度的升高而增强。热力学研究揭示了吸附过程的自发性和吸热性。解吸研究表明，蛋壳可以在不同的吸附/解吸循环中重复使用。一种新颖的高级氧化工艺可以降解超过95％的染料。结果表明，蛋壳是一种废料，可用于去除废水中的有害染料，这可能减轻染色行业对环境的影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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