Bio-inspired Ni2+-polyphenol hydrophilic network to achieve unconventional high-flux nanofiltration membranes for environmental remediation

2017 ◽  
Vol 53 (45) ◽  
pp. 6128-6131 ◽  
Author(s):  
Fangjie You ◽  
Yanchao Xu ◽  
Xiaobin Yang ◽  
Yanqiu Zhang ◽  
Lu Shao
Keyword(s):  
Environmental Remediation ◽  
High Flux ◽  
Dye Wastewater ◽  
Wastewater Remediation ◽  
Nanofiltration Membranes ◽  
Hydrophilic Coating ◽  
Highly Efficient ◽  
Hydrophilic Network

A Ni2+-polyphenol network was synthesized as a hydrophilic coating to achieve highly efficient nanofiltration membranes with an unconventional high flux for dye wastewater remediation.

A Co3O4 nano-needle mesh for highly efficient, high-flux emulsion separation

2016 ◽  
Vol 4 (31) ◽  
pp. 12014-12019 ◽  
Author(s):  
Yuee Chen ◽  
Nü Wang ◽  
Fengyun Guo ◽  
Lanlan Hou ◽  
Jingchong Liu ◽  
...  
Keyword(s):  
High Flux ◽  
High Concentration ◽  
Highly Efficient ◽  
Emulsion Separation

Highly efficient, high-flux emulsion separation by using a Co3O4 nano-needle mesh not only for neutral emulsions but also for strong alkali and high-concentration salt emulsions.

Scalable Sulfonate-Coated Cotton Fibers as Facile Recyclable and Biodegradable Adsorbents for Highly Efficient Removal of Cationic Dyes

2021 ◽  
Author(s):  
Linhua Li ◽  
Baojie Dou ◽  
Jianwu Lan ◽  
Jiaojiao Shang ◽  
Yafang Wang ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Large Scale ◽  
Ph Value ◽  
Cationic Dyes ◽  
Cotton Fibers ◽  
Wastewater Remediation ◽  
Efficient Removal ◽  
Adsorption Sites ◽  
Highly Efficient ◽  
Coated Cotton

Abstract Adsorbents with superior adsorption capacity and facile recyclability are viewed as promising materials for dye wastewater treatment. In this work, a novel sulfonate decorated cotton fiber as a biodegradable and recyclable adsorbent was fabricated for highly efficient removal of cationic dyes. Herein, the poly(sodium p-styrenesulfonate-co-N-methylol acrylamide) (P(SSNa-co-NMAM)) with SSNa units as adsorption sites and NMAM units as thermal-crosslinking points was synthesized for modification of cotton fibers in a large scale at high temperature (160 oC). The various characterization investigations confirmed the successful construction of the P(SSNa-co-NMAM) coated cotton fibers (PCF). As expected, the as-obtained adsorbent presented outstanding adsorption performance toward cationic dyes in the both static and dynamic states, even in the synthetic effluent. The adsorption processes of cationic dyes onto the PCF were well fitted by the Langmuir isotherm model and Pseudo-second-order kinetics, respectively. The thermodynamics study showed that the adsorption reaction of the cationic dyes onto PCF was a spontaneous and endothermic process. The maximum adsorption capacities of PCF toward MEB, RhB and MG were 3976.10, 2879.80 and 3071.55 mg/g, respectively. The responsible adsorption of dyes ontothe PCF was electrostatic interaction. Moreover, the adsorption capacity of PCF toward cationic dyes was slight influenced by pH value of solution, because of the stable feature of sulfonate moiety in acid and alkali. In addition, the as-prepared PCF exhibited satisfactory recyclability and reusability. Given the aforementioned results, the as-obtained PCF is a promising adsorbent with great potential for practical application in the dye-contaminated wastewater remediation.

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