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. 2021 Jun 11;6(24):15885-15891.
doi: 10.1021/acsomega.1c01444. eCollection 2021 Jun 22.

PEG/Sodium Tripolyphosphate-Modified Chitosan/Activated Carbon Membrane for Rhodamine B Removal

Jingjing Yang  1 , Yijun Han  1 , Zhiwei Sun  1 , Xiaoyu Zhao  1 , Fan Chen  2 , Tao Wu  3 , Yanyan Jiang  1   4   5
Affiliations

PEG/Sodium Tripolyphosphate-Modified Chitosan/Activated Carbon Membrane for Rhodamine B Removal

Jingjing Yang et al. ACS Omega. .

Abstract

Textile dyes from wastewater effluent are highly toxic to both living species and aqueous environments. An environmentally friendly method to remove hazardous dyes from wastewater in the textile industry has been a challenge. Chitosan (CS) and activated carbon (AC) are widely used as adsorbents for dye removal. However, the poor porosity and unsatisfactory stability of CS and the unfriendly cost of AC limited their applications to be used alone as a single adsorbent. Here, we report a novel method to prepare a CS/AC membrane using PEG10000 as a porogen and sodium tripolyphosphate (TPP) as a cross-linking agent. The adsorption efficiency and reusability of the PEG/TPP-modified CS/AC membrane to remove RhB were investigated based on dynamic and static adsorption models. The results reveal that the adsorption performance of CS/AC membranes was significantly improved after the PEG/TPP modification based on the abundance macroporous structure. The modified CS/AC membrane with a 30% AC doping ratio exhibited an excellent adsorption efficiency of 91.29 and 73.91% in the dynamic and static adsorption processes, respectively. These results provide new insights into designing membranes to remove dyes from wastewater efficiently.

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Conflict of interest statement

The authors declare no competing financial interest.

Figures

Figure 1
Figure 1
Scanning electron microscopy images of the TPP cross-linking P-CS membrane. (a) Surface macromorphology, magnification = 500, (b) cross-sectional, magnification = 500, and surface microtopography, (c) magnification = 5000 and (d) magnification = 10,000.
Figure 2
Figure 2
Scanning electron micrographs of TPP cross-linking P-CS/AC membranes with different AC doping ratios, (a) 40, (b) 30, (c) 20, and (d) 10%.
Figure 3
Figure 3
Adsorption efficiency of (a) first used and (b) reused N-CS/AC membranes and P-CS/AC membranes with different AC doping ratios.
Figure 4
Figure 4
Adsorption efficiency of N-CS/AC membranes and P-CS/AC membranes in a static adsorption experiment.
Figure 5
Figure 5
Adsorption quantity of N-CS/AC membranes and P-CS/AC membranes with different AC doping ratios.
Figure 6
Figure 6
Adsorption efficiency of first used and reused CS/AC membranes with 30 and 40% AC doping ratios (R1: first used membranes and R2: reused membranes).
See this image and copyright information in PMC

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References

    1. Hu E.; Shang S.; Chiu A. K. Removal of Reactive Dyes in Textile Effluents by Catalytic Ozonation Pursuing on-Site Effluent Recycling. Molecules 2019, 24, 2755.10.3390/molecules24152755. - DOI - PMC - PubMed
    1. Nithya R.; Thirunavukkarasu A.; Sathya A. B.; Sivashankar R. Magnetic materials and magnetic separation of dyes from aqueous solutions: a review. Environ. Chem. Lett. 2021, 19, 1275.10.1007/s10311-020-01149-9. - DOI
    1. Banat I. M.; Nigam P.; Singh D.; Marchant R. Microbial decolorization of textile-dyecontaining effluents: A review. Bioresour. Technol. 1996, 58, 217–227. 10.1016/s0960-8524(96)00113-7. - DOI
    1. Moradihamedani P. Recent advances in dye removal from wastewater by membrane technology: a review. Polym. Bull. 2021, 10.1007/s00289-021-03603-2. - DOI
    1. Figueiredo S. A.; Boaventura R. A.; Loureiro J. M. Color removal with natural adsorbents: modeling, simulation and experimental. Sep. Purif. Technol. 2000, 20, 129–141. 10.1016/s1383-5866(00)00068-x. - DOI