Removal of bisphenol a from wastewater by adsorption and membrane separation: Performances and mechanisms

Cheng, Feng; Wang, Jianlong

doi:10.1016/j.cej.2024.149414

Cited by 26 publications

(1 citation statement)

References 188 publications

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“…Due to the superior catalytic activity of DAC–Fe–Co, the performance of the DAC–Fe–Co/PMS system in the removal of other organic pollutants was investigated. In addition to SMX, bisphenol A, phenol, atrazine, and nitrobenzene were also used as emerging contaminants because they are ubiquitous in water and wastewater. − The DAC–Fe–Co/PMS system could also remove phenol, bisphenol A, atrazine and nitrobenzene (Figure S14). For phenol and bisphenol A, they had a much faster degradation rate than nitrobenzene and atrazine.…”

Section: Resultsmentioning

confidence: 99%

Discrepant Catalytic Activity of Biochar-Based Fe and Co Homonuclear and Heteronuclear Diatomic Catalysts for Activating Peroxymonosulfate to Degrade Emerging Pollutants

Wang,

2024

ACS EST Eng.

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In this study, biochar-based Fe and Co homonuclear (DAC−Fe−Co) and heteronuclear (DAC-Fe/Co) diatomic catalysts were first prepared via controlling the ligands of Fe and Co, and used to activate peroxymonosulfate (PMS) for the degradation of emerging organic pollutants, such as sulfamethoxazole (SMX), bisphenol A, phenol, atrazine, and nitrobenzene. The results showed that acid pretreatment of biochar was necessary for biochar to synthesize atomic catalysts. The DAC-Fe/Co had higher contents of Fe and Co than DAC−Fe−Co, but lower catalytic activity, in which the SMX first-order kinetics rate constant for DAC−Fe−Co was 4.1 times higher than that for DAC-Fe/Co, achieving 0.32 min −1 . DAC−Fe−Co and DAC-Fe/Co could activate PMS to produce similar reactive species, including radicals and nonradicals. But DAC−Fe−Co produced a higher concentration of radicals than DAC-Fe/Co. The density functional theory (DFT) calculation indicated that compared to DAC-Fe/Co, DAC−Fe−Co had a higher adsorption capacity for PMS (−7.90 eV) and lower energy barrier for the regeneration of Fe (−1.20 eV) and Co (−1.16 eV) active sites. The enhanced regeneration of Fe and Co active sites promoted the formation of radicals, which explained the faster SMX removal rate in the system of DAC−Fe−Co/PMS than DAC-Fe/Co/PMS. The DAC−Fe−Co/PMS system exhibited high resistance to inorganic anions and showed excellent catalytic stability in the cycling experiments. This study provides insight into the discrepant catalytic activity of homonuclear and heteronuclear diatomic catalysts for PMS activation to degrade emerging organic contaminants, and offers a new way to prepare the homonuclear diatomic catalyst.

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Section: Resultsmentioning

confidence: 99%

Discrepant Catalytic Activity of Biochar-Based Fe and Co Homonuclear and Heteronuclear Diatomic Catalysts for Activating Peroxymonosulfate to Degrade Emerging Pollutants

Wang,

2024

ACS EST Eng.

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Multiwalled carbon nanotubes@pectin/κ‐carrageenan‐based nanocomposite biohydrogel prepared by gamma irradiation for efficient methylene blue dye sequestration

Aboelkhir,

Sayed,

Eldondaity

et al. 2024

J of Applied Polymer Sci

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This study addresses the critical issue of removing toxic dyes from industrial wastewater to protect the environment and human health. To address this challenge, a bio‐based composite hydrogel was synthesized using gamma irradiation, 20 kGy, incorporating multiwalled carbon nanotubes@pectin/κ‐carrageenan/polyacrylic acid (MWCNTs PC/KC/PAAc) for removing methylene blue (MB) dye from aqueous solutions. The prepared composites underwent characterization through Fourier‐transform infrared spectroscopy, x‐ray diffraction, and thermogravimetric analyses. Brunauer–Emmett–Teller analysis demonstrated a significant increase in surface area upon the addition of MWCNTs. Specifically, the surface area increased from 342.5 m2 g−1 for PC/KC/PAAc to 689.5 m2 g−1 when 0.175&#x02009;wt% of MWCNTs were added. Also, scanning electron microscopy and atomic force microscopy were utilized to examine the surface topography of PC/KC/PAAc and MWCNTs@PC/KC/PAAc. The results reveal that at 0.175&#x02009;wt% of MWCNTs, there was a more uniform surface topography with well‐distributed MWCNTs within the matrix. In the adsorption study of MB dye, it was found that the highest MB removal efficiency was achieved at pH&#x02009;11, with values of 68.21% and 96% for PC/KC/PAAc and MWCNTs@PC/KC/PAAc, respectively. Furthermore, upon studying the effect of MWCNTs (%), the results showed that the removal (%) of PC/KC/PAAc was 68.21&#x02009;±&#x02009;1.02%, and this percentage increased rapidly with the addition of MWCNTs, reaching a maximum of 96&#x02009;±&#x02009;0.85% when 0.175 (wt%) of MWCNTs was added. Isotherm and kinetic modeling demonstrated that MB adsorption follows the Freundlich isotherm for PC/KC/PAAc and the Redlich–Peterson isotherm for MWCNTs@PC/KC/PAAc, both following a pseudo‐second‐order kinetics model. In addition, from AFM data, after MB removal, the height increased significantly from 322&#x02009;nm for PC/KC/PAAc to 810&#x02009;nm for MWCNTs@PC/KC/PAAc (0.175&#x02009;wt%), indicating a substantially higher adsorption of MB by MWCNTs@PC/KC/PAAc.

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A comprehensive review on advanced trends in treatment technologies for removal of Bisphenol A from aquatic media

Waleed,

Haroon,

Ullah

et al. 2024

Environ Monit Assess

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Removal of bisphenol a from wastewater by adsorption and membrane separation: Performances and mechanisms

Cited by 26 publications

References 188 publications

Discrepant Catalytic Activity of Biochar-Based Fe and Co Homonuclear and Heteronuclear Diatomic Catalysts for Activating Peroxymonosulfate to Degrade Emerging Pollutants

Discrepant Catalytic Activity of Biochar-Based Fe and Co Homonuclear and Heteronuclear Diatomic Catalysts for Activating Peroxymonosulfate to Degrade Emerging Pollutants

Multiwalled carbon nanotubes@pectin/κ‐carrageenan‐based nanocomposite biohydrogel prepared by gamma irradiation for efficient methylene blue dye sequestration

A comprehensive review on advanced trends in treatment technologies for removal of Bisphenol A from aquatic media

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