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首页> 外文期刊>Journal of Chemical and Engineering Data: the ACS Journal for Data >Single and Binary System Dye Removal from Colored Textile Wastewater by a Dendrimer as a Polymeric Nanoarchitecture: Equilibrium and Kinetics
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Single and Binary System Dye Removal from Colored Textile Wastewater by a Dendrimer as a Polymeric Nanoarchitecture: Equilibrium and Kinetics

机译：树枝状大分子作为聚合物纳米体系结构从有色纺织废水中去除单一和二元体系染料：平衡和动力学

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This paper deals with the removal of textile dyes from aqueous solutions by a poly(propylene imine) dendrimer (PPI) as a polymeric nanoarchitecture in single and binary (mixture of dyes) systems. Direct Blue 78 (DB78) and Acid Black 26 (AB26) were used as model dyes. The effects of operational parameters such as dendrimer concentration, contact time, dye concentration, inorganic anions (salts), and pH have been studied on dye removal. Adsorption isotherms (Langmuir, Freundlich, and Tempkin models), adsorption kinetics (pseudofirst order, pseudOsecond order, and intraparticle diffusion), and dye desorption were studied in single and binary dye systems. It was found that the isotherm data of DB78 and AB26 in single and binary systems of dyes followed the Langmuir isotherm. Adsorption kinetics of dyes in single and binary dye systems were found to conform to a pseudosecond order model. Desorption tests showed that the maximum dye releases of 93 % for DB78 and 86 % for AB26 in a single system and 90 % for DB78 and 84 % for AB26 in a binary system of dyes were achieved in aqueous solution at pH 12. On the basis of the data of the present study, it can be concluded that the dendrimer as a polymeric nanoarchitecture is an eco-friendly adsorbent with a relatively large adsorption capacity and may be a suitable alternative for elimination of dyes from aqueous media.
机译：本文涉及通过聚丙烯（亚胺）树枝状聚合物（PPI）从水溶液中去除纺织品染料，该聚合物是在单一和二元（染料混合物）体系中的聚合物纳米结构。直接蓝78（DB78）和酸性黑26（AB26）被用作模型染料。已经研究了诸如树枝状聚合物浓度，接触时间，染料浓度，无机阴离子（盐）和pH值等操作参数对染料去除的影响。在单一和二元染料系统中研究了吸附等温线（Langmuir，Freundlich和Tempkin模型），吸附动力学（伪一阶，pseudOsecond阶和粒子内扩散）和染料解吸。发现在染料的单和二元体系中，DB78和AB26的等温线数据遵循Langmuir等温线。发现单一和二元染料体系中染料的吸附动力学符合伪二级模型。解吸测试表明，在pH值为12的水溶液中，单个系统中DB78的最大染料释放量为93％，AB26的最大染料释放量为84％，AB26二元系统的最大释放量为AB26的84％。根据本研究的数据，可以得出结论，作为聚合物纳米结构的树枝状聚合物是一种具有相对较大吸附容量的环保型吸附剂，并且可能是从水性介质中消除染料的合适替代品。

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