Removal of direct dyes from aqueous solution by oxidized starch cross-linked chitosan/silica hybrid membrane

He, Xuemei; Du, Ming; Li, Hui; Zhou, Tianchi

doi:10.1016/j.ijbiomac.2015.11.005

Cited by 82 publications

(23 citation statements)

References 47 publications

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“…The rapid adsorption of GY by the three PSX/MSA adsorbents occurred in the first 2 h, and the increase in adsorption time up to 11 h showed that the GY removal tended to slow till equilibrium. The rapid adsorption at the start could be attributed to the adsorption of dye molecules on the upper surface of these adsorbents [35], and then it became slow due to the slow passing of the dye molecules into the inner porous structure of the adsorbents [21]. Another possible reason was that large number of exchangeable sites in the beginning of adsorption contributed to the adsorption and then saturation occurred at the exchangeable sites [36].…”

Section: Adsorption Of Gymentioning

confidence: 99%

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Synthesis of porous starch xerogels modified with mercaptosuccinic acid to remove hazardous gardenia yellow

Bao

Zhu

Dai

et al. 2016

International Journal of Biological Macromolecules

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Section: Adsorption Of Gymentioning

confidence: 99%

“…More importantly, natural polysaccharides contained abundant active functionalities such as hydroxyl, carboxyl and amino groups, which enabled their further modification for effective dyes removal [1,[21][22][23]. Starch was one of the natural polysaccharides functioning as an important energy source for humans.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of porous starch xerogels modified with mercaptosuccinic acid to remove hazardous gardenia yellow

Bao

Zhu

Dai

et al. 2016

International Journal of Biological Macromolecules

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“…The flux reduction is due to the gradual increase of concentration of salt and dye with increasing recoveries, which results in severer concentration polarization and more dye molecular adsorption. As we discuss earlier, the coated membrane carries more negative charges, exhibiting stronger charge repulsion with the dye molecules which are also negatively charged . Therefore, the membrane shows better fouling resistance to dye and consequently a slower decline of flux with increasing recoveries.…”

Section: Resultsmentioning

confidence: 84%

Depositing lignin on membrane surfaces for simultaneously upgraded reverse osmosis performances: An upscalable route

Zhang

et al. 2017

AIChE Journal

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Reverse osmosis (RO) have been widely used to produce clean water and there is a strong need to enhance their permeability at no sacrifice of their other performances, e.g., selectivity. We deposit low‐cost biopolymer, lignin, onto the surface of RO membranes by a simple filtration method. Lignin is deposited to the membrane surface via both hydrogen bonding and π‐π interaction. Lignin deposition reduces the surface roughness of the membrane and enhances its negatively charging, while the surface hydrophilicity is maintained. Surprisingly, water permeation, salt rejection, and fouling resistance of the lignin‐deposited membranes are simultaneously improved. More importantly, we demonstrate that this deposition method can be easily extended to modify commercial RO membrane modules, indicating the excellent upscalability of this method. We use the lignin‐deposited membranes to treat real effluents of dyeing and papermaking and they perform much better than the virgin, unmodified membranes. © 2017 American Institute of Chemical Engineers AIChE J, 63: 2221–2231, 2017

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“…To make photo‐Fenton‐like catalysts with highly selective degradation ability and reusability, the new molecularly imprinted inorganic‐framework Fe–TiO 2 composites (MIP/Fe–TiO 2 ) were prepared using the sol–gel method. In industrial applications, acid orange II (AOII) is one of the most constantly used dyes for the dyeing and printing of cellulosic fibers and their blends . It was, therefore, chosen as the target pollutant in this work.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of an inorganic‐framework molecularly imprinted Fe‐doped TiO₂ composite and its selective photo‐Fenton‐like degradation of acid orange II

Song

Rong

Shang

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND The heterogeneous photo‐Fenton‐like process is emerging as a promising treatment of dye‐containing wastewater because of its economic feasibility and high efficiency. However, it is still required to develop photo‐Fenton‐like catalysts with highly selective degradation ability and reusability. RESULTS Inorganic‐framework molecularly imprinted Fe‐doped TiO2 composites (MIP/Fe–TiO2) were successfully prepared by the sol–gel method, with acid orange II as the template and TiO2 as the matrix material. The photo‐Fenton‐like catalysts were characterized using FESEM, EDS, BET, X‐ray diffraction, FT‐IR spectroscopy and UV–vis diffuse reflectance spectroscopy. These methods revealed the well‐crystallized anatase phase and good nanometer‐level particle sizes. The adsorption property and photo‐Fenton‐like activity of the catalysts were also studied in single and binary systems, respectively. CONCLUSIONS Compared with non‐imprinted Fe–TiO2 composites (NIP/Fe–TiO2), MIP/Fe–TiO2 showed higher adsorption capacity and selectivity toward the template molecule. In addition, it was found that the molecular recognition ability of MIP/Fe–TiO2 provided the catalysts with rapidly selective photo‐Fenton‐like degradation of low target pollutant levels (20 mg L−1) in the presence of high levels of interferential pollutant sodium dodecyl benzene sulfonate (100 mg L−1). Moreover, because of the stable physicochemical properties of the inorganic framework, the new photo‐Fenton‐like catalysts were resistant to photochemical attack and showed favorable reusability. © 2017 Society of Chemical Industry

show abstract

Removal of direct dyes from aqueous solution by oxidized starch cross-linked chitosan/silica hybrid membrane

Cited by 82 publications

References 47 publications

Synthesis of porous starch xerogels modified with mercaptosuccinic acid to remove hazardous gardenia yellow

Synthesis of porous starch xerogels modified with mercaptosuccinic acid to remove hazardous gardenia yellow

Depositing lignin on membrane surfaces for simultaneously upgraded reverse osmosis performances: An upscalable route

Synthesis of an inorganic‐framework molecularly imprinted Fe‐doped TiO₂ composite and its selective photo‐Fenton‐like degradation of acid orange II

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Removal of direct dyes from aqueous solution by oxidized starch cross-linked chitosan/silica hybrid membrane

Cited by 82 publications

References 47 publications

Synthesis of porous starch xerogels modified with mercaptosuccinic acid to remove hazardous gardenia yellow

Synthesis of porous starch xerogels modified with mercaptosuccinic acid to remove hazardous gardenia yellow

Depositing lignin on membrane surfaces for simultaneously upgraded reverse osmosis performances: An upscalable route

Synthesis of an inorganic‐framework molecularly imprinted Fe‐doped TiO2 composite and its selective photo‐Fenton‐like degradation of acid orange II

Contact Info

Product

Resources

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Synthesis of an inorganic‐framework molecularly imprinted Fe‐doped TiO₂ composite and its selective photo‐Fenton‐like degradation of acid orange II