Synthesis and performance analysis of a mesoporous polydopamine-functionalized magnetic microcapsule adsorbent in water treatment

Zhou, Gang; Jiang, Wenjing; Xu, Zhuo; Yang, Siao; Jia, Xianchao; Tian, Yichun; Luan, Guoliang

doi:10.1016/j.jwpe.2022.102894

Cited by 7 publications

(2 citation statements)

References 47 publications

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“…Figure 11 b compares the adsorption capacity of P2P and P2 microcapsules with other dye adsorbents reported previously [ 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 ]. Clearly, both P2P and P2 microcapsules display the highest adsorption capacities for ROKG, DY5G, RhB and MB.…”

Section: Resultsmentioning

confidence: 88%

“… ( a ) Dye removal rate after three cycles of adsorption and desorption, ( b ) Comparison of some recently reported adsorbents with high maximum adsorption capacities to reactive orange, direct yellow, RhB and MB [ 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 ]. ( c , d ) SEM images of the P2P–ROKG micro-particles after three cycles of adsorption and desorption, ( e , f ) SEM images of the P2–MB micro-particles after three cycles of adsorption and desorption.…”

Section: Figures Scheme and Tablesmentioning

confidence: 99%

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Rapid, Highly-Efficient and Selective Removal of Anionic and Cationic Dyes from Wastewater Using Hollow Polyelectrolyte Microcapsules

Zhao

Zhou²,

Han

et al. 2023

Molecules

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Herein, poly (allylamine hydrochloride) (PAH)/ poly (styrene sulfonic acid) sodium salt (PSS) microcapsules of (PAH/PSS)2PAH (P2P MCs) and (PAH/PSS)2 (P2 MCs) were obtained by a layer-by-layer method. The P2 MCs show high adsorption capacity for Rhodamine B (642.26 mg/g) and methylene blue (909.25 mg/g), with an extremely low equilibrium adsorption time (~20 min). The P2P MCs exhibited high adsorption capacities of reactive orange K-G (ROKG) and direct yellow 5G (DY5G) which were 404.79 and 451.56 mg/g. Adsorption processes of all dyes onto microcapsules were best described by the Langmuir isotherm model and a pseudo-second-order kinetic model. In addition, the P2P MCs loaded with reactive dyes (P2P–ROKG), could further adsorb rhodamine B (RhB) dye, and P2 MCs that had adsorbed cationic MB dyes could also be used for secondary adsorption treatment of direct dye waste-water, respectively. The present work confirmed that P2P and P2 MCs were expected to become an excellent adsorbent in the water treatment industry.

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