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首页> 外文期刊>Polymers research journal >Application of Surfactant Modified polypyrrole nano blocomposite for Adsorption of Basic Dyes from Aqueous Solutions Using Non-Equilibrium Continuous Mode
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Application of Surfactant Modified polypyrrole nano blocomposite for Adsorption of Basic Dyes from Aqueous Solutions Using Non-Equilibrium Continuous Mode

机译：表面活性剂修饰的聚吡咯纳米复合物在非平衡连续模式下从水溶液中吸附碱性染料的应用

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摘要

In this paper, we present the potential use of a novel and efficient adsorbent for basic dye removal from aqueous solutions. Wood sawdust (SD) as a waste biomaterial was first coated by polypyrrole to prepare a new nano-biocomposite (PPy/SD). PPy/SD was then treated with anionic surfactant of dodecyl benzene sulfonic acid (DBS/PPy/SD) in order to increase the active sites of the sorbent for dye uptake, methylene blue (MB) a basic or cationic dye was employed as test probe. Adsorption experiments were conducted in nonequilibrium continuous system. The sorption performances of four selected adsorbents (SD, DBS/SD, PPy/SD, and DBS/PPy/SD) toward MB dye uptake were then compared. The effects of fundamental parameters such as initial pH value, influent dye concentration, flow rate and sorbent dosage on MB dye removal onto DBS/PPy/SD were investigated. Among the selected adsorbents, DBS/PPy/SD showed the highest sorption capacity. The adsorption data were then treated with Thomas dynamic adsorption model under various conditions. The maximum adsorption capacity of 166.65 mg g~(-1) was obtained for DBS/PPy/SD at optimal pH value of 10, 50 mg L~(-1) initial dye concentration, 3 mL min~(-1) flow rate, and 2.0 g adsorbent dosage with 11 cm bed depth. Regeneration of the adsorbent was possible with high performance without any considerable drop in sorption capacity after at least three adsorption/desorption cycles.
机译：在本文中，我们介绍了一种新型有效吸附剂从水溶液中去除碱性染料的潜在用途。首先将木屑（SD）用作废生物材料，然后用聚吡咯涂层以制备新的纳米生物复合材料（PPy / SD）。然后使用十二烷基苯磺酸的阴离子表面活性剂（DBS / PPy / SD）处理PPy / SD，以增加吸附剂的活性以吸收染料。亚甲基蓝（MB）采用碱性或阳离子染料作为测试探针。吸附实验是在非平衡连续系统中进行的。然后比较了四种选择的吸附剂（SD，DBS / SD，PPy / SD和DBS / PPy / SD）对MB染料的吸附性能。考察了初始pH值，进水染料浓度，流速和吸附剂用量等基本参数对MBS去除DBS / PPy / SD上MB染料的影响。在所选的吸附剂中，DBS / PPy / SD显示出最高的吸附容量。然后在各种条件下用Thomas动态吸附模型处理吸附数据。在最适pH值为10时，DBS / PPy / SD的最大吸附能力为166.65 mg g〜（-1），初始染料浓度为50 mg L〜（-1），流速为3 mL min〜（-1） ，以及2.0 g的吸附剂剂量，床深为11 cm。在至少三个吸附/解吸循环后，高性能的吸附剂再生是可能的，而吸附能力没有任何显着下降。

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