A polysaccharide-based bioflocculant BP50-2 from banana peel waste: Purification, structure and flocculation performance

Ma, Xiaolei; Duan, Duomo; Chen, Xi; Feng, Xuemin; Ma, Yuhui

doi:10.1016/j.ijbiomac.2022.02.071

Cited by 14 publications

(2 citation statements)

References 28 publications

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“…The SEM revealed that the morphology of PSMT1 and PSMT2 mainly presented a spongy porous structure. The porous surface of PSMT1 and PSMT2 was comparable to polysaccharides puied from banana peel waste [43].…”

Section: Microstructural Analysis Of Psmt1 and Psmt2 By Semmentioning

confidence: 78%

Purification of polysaccharide isolated from “Matthiola longipetala”: structure characterization and antioxidant activities

Eljoudi,

Hajji,

et al. 2024

Preprint

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Purpose: In this study, the polysaccharides isolated from Matthiola logipetala (PSMT) purified by DEAE-Sepharose chromatography. Tow fractions of polysaccharides, PSMT1 and PSMT2 were obtained. Methods: The PSMT1 and PSMT2 structures and physicochemical proprieties were investigated using chemical and instrumental analysis, including Fourier transform infrared (FT-IR) spectroscopy, spectrum visible UV, nuclear magnetic spectroscopy (1H-NMR and 13C-NMR), X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). Results: The results of high-performance liquid chromatography (HPLC-MS) showed that the both purified polysaccharides PSMT1 and PSMT2 were mainly composed of rhamnose, arabinose, glucose and galactose in a molar percent in 39.69%, 29.59%, 8.81% and 21.89%, respectively for PSMT1 and 38.5%, 28.71%,15.1% and 17.676% respectively for PSMT2.The data of thermogravimetry analysis (TGA) and differential scanning calorimetry (DSC) indicated that PSMT1 and PSMT2 had relatively high thermal stability. The result of gel permeation chromatography (GPC) showed that PSMT1 and PSMT2 had a relative molecular weight of 9.779 kDa and 115.004 kDa respectively. Moreover, the in vitro antioxidant activities of PSMT were evaluated by DPPH free radical assay, ferrous iron–chelating, assay and total antioxidant activity. The experimental results showed that PSMT1 and PSMT2 exhibited an appreciable in vitro antioxidant potential. Conclusion: Our results revealed that PSMT1 and PSMT2, polysaccharides purified from Matthiola longipetala could be novel active biomolecules with antioxidant proprieties, which promoting their application in the food and pharmaceutical fields.

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Section: Microstructural Analysis Of Psmt1 and Psmt2 By Semmentioning

confidence: 78%

Purification of polysaccharide isolated from “Matthiola longipetala”: structure characterization and antioxidant activities

Eljoudi,

Hajji,

et al. 2024

Preprint

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“…However, dye wastewater contains a large amount of azoles and polycyclic aromatics that are challenging to degrade [2], which leads to environment pollution and serious threat to human health [3,4]. To solve those problems, various methods, including adsorption [5][6][7], occulation [8][9][10][11], biological oxidation [12][13][14], and photodegradation [15][16][17][18] are employed. Among these, photodegradation technology has garnered signi cant attention due to its merits, such as high e ciency, low cost, and ease of operation [19].…”

Section: Introductionmentioning

confidence: 99%

High-performance visible-light responsive BiPO4@ZnWO4 photocatalyst for enhancing photodegradation characteristics

Wang,

Liu

et al. 2024

Preprint

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The rational construction of heterostructures plays a pivotal role in enhancing both the separation of photogenerated carriers in semiconductors and the photocatalytic activity. This paper successfully constructs a novel BiPO4@ZnWO4 p-n type heterojunction photocatalyst by hydrothermal and ultrasonic stirring methods. The BiPO4@ZnWO4 heterojunction exhibits outstanding photocatalytic performance, achieving a degradation efficiency of 99% for rhodamine B (RhB) under visible light illumination in just 40 min. Furthermore, its photocatalytic reaction rate constant is 3.9 and 96.51 times higher than that of pure ZnWO4 and BiPO4, respectively. Electrochemical characterization demonstrates a more robust photocurrent response and lower resistance in the composite sample, facilitating efficient transport of photogenerated carriers. In addition, the 20% BiPO4@ZnWO4 heterojunction also exhibits desirable photodegradation stability, maintaining a RhB removal rate above 80% even after 5 cycles. Within the context of the photocatalytic reaction system, the superoxide radical (·O2-) plays a key role, succeeded by the hydroxyl radical (·OH) and the photoinduced hole (h+). This paper provides a feasible p-n type heterojunction photocatalyst for the treatment of dyeing wastewater.

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High-performance visible-light responsive BiPO4@ZnWO4 photocatalyst for enhancing photodegradation characteristics

Wang,

Liu

et al. 2024

J Sol-Gel Sci Technol

View full text Add to dashboard Cite

The rational construction of heterostructures plays a pivotal role in enhancing both the separation of photogenerated carriers in semiconductors and the photocatalytic activity. This paper successfully constructs a novel BiPO4@ZnWO4 p-n type heterojunction photocatalyst by hydrothermal and ultrasonic stirring methods. The BiPO4@ZnWO4 heterojunction exhibits outstanding photocatalytic performance, achieving a degradation e ciency of 99% for rhodamine B (RhB) under visible light illumination in just 40 min. Furthermore, its photocatalytic reaction rate constant is 3.9 and 96.51 times higher than that of pure ZnWO4 and BiPO4, respectively. Electrochemical characterization demonstrates a more robust photocurrent response and lower resistance in the composite sample, facilitating e cient transport of photogenerated carriers. In addition, the 20% BiPO4@ZnWO4 heterojunction also exhibits desirable photodegradation stability, maintaining a RhB removal rate above 80% even after 5 cycles. Within the context of the photocatalytic reaction system, the superoxide radical (•O2-) plays a key role, succeeded by the hydroxyl radical (•OH) and the photoinduced hole (h+). This paper provides a feasible p-n type heterojunction photocatalyst for the treatment of dyeing wastewater.

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A polysaccharide-based bioflocculant BP50-2 from banana peel waste: Purification, structure and flocculation performance

Cited by 14 publications

References 28 publications

Purification of polysaccharide isolated from “Matthiola longipetala”: structure characterization and antioxidant activities

Purification of polysaccharide isolated from “Matthiola longipetala”: structure characterization and antioxidant activities

High-performance visible-light responsive BiPO4@ZnWO4 photocatalyst for enhancing photodegradation characteristics

High-performance visible-light responsive BiPO4@ZnWO4 photocatalyst for enhancing photodegradation characteristics

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