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Adsorption and recovery of methylene blue from aqueous solution through ultrafiltration technique

机译：超滤技术从水溶液中吸附和回收亚甲基蓝

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摘要

Adsorption and recovery of methylene blue (MB) from aqueous solution through ultrafiltration technique with polyethersulfone (PES) membrane was developed. Cationic dye MB can be adsorbed by PES membrane from aqueous solution. The amount of adsorbed MB on PES membrane was higher at the condition of basic solution and lower ionic strength. The electrostatic interaction may be the important driving force of MB adsorption. During ultrafiltration, the rejection ratio of MB can reach 100% in the initial operation stage due to convection mass transport through membrane pores and adsorption of MB on the surface and pores of PES membrane. The final recovery of MB in the permeate solution was easily achieved by decreasing the solution pH to desorb MB. The adsorption and recovery of dyes from aqueous solution through ultrafiltration technique have potential application in wastewater treatment.
机译：利用聚醚砜（PES）膜通过超滤技术从水溶液中吸附和回收亚甲基蓝（MB）。阳离子染料MB可以被PES膜从水溶液中吸附。在碱性溶液和较低的离子强度条件下，PES膜上MB的吸附量较高。静电相互作用可能是MB吸附的重要驱动力。在超滤过程中，由于对流通过膜孔的传质以及MBS在PES膜表面和孔上的吸附，MB在初始操作阶段的排斥率可以达到100％。通过降低溶液的pH值使MB解吸，可以轻松实现渗透液中MB的最终回收。通过超滤技术从水溶液中吸附和回收染料具有潜在的废水处理应用。

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