Recovery of Bisphenol A by pH-Triggered Magnetic Nanoparticles

NANO ◽  
2019 ◽  
Vol 14 (05) ◽  
pp. 1950065
Author(s):  
Yongsheng Jia ◽  
Enze Li ◽  
Zhiping Du ◽  
Jianfeng Li ◽  
Fangqin Cheng
Keyword(s):  
Aqueous Solution ◽  
Magnetic Nanoparticles ◽  
Bisphenol A ◽  
Industrial Wastewater ◽  
Epoxy Resins ◽  
Recovery Efficiency ◽  
Desorption Process ◽  
Modified Magnetic Nanoparticles ◽  
Text Interaction ◽  
Adsorption Desorption

Bisphenol A is not only one of the frequent contaminants of industrial wastewater, but also one of the main ingredients in polycarbonate and epoxy resins. This study synthesizes a pH-triggered Fe3O4@mSiO2@DPDES adsorbent for recycling Bisphenol A through adsorption–desorption process. Due to the strong [Formula: see text]–[Formula: see text] interaction between the phenyl groups in diphenyldiethoxysilane modified magnetic nanoparticles (MNPs) and Bisphenol A, absorbance reached 120.17[Formula: see text]mg/g at pH 7, allowing the bisphenol A adsorbed to Fe3O4@mSiO2@DPDES to be trivially separated from aqueous solutions with a magnet. Desorption of the adsorbed bisphenol A in aqueous solution occurred at pH 2, allowing an impressive 95% recovery rate. The durability of the Fe3O4@mSiO2@DPDES adsorbent was tested by repeated separation of bisphenol A from an aqueous solution, with the recovery efficiency remaining greater than 85% after five cycles.

scholarly journals Polyaniline modified magnetic nanoparticles coated with dicationic ionic liquid for effective removal of rhodamine B (RB) from aqueous solution

RSC Advances ◽  
2018 ◽  
Vol 8 (58) ◽  
pp. 33180-33192 ◽  
Author(s):  
Mohamad Shariff Shahriman ◽  
Nur Nadhirah Mohamad Zain ◽  
Sharifah Mohamad ◽  
Ninie Suhana Abdul Manan ◽  
Suhaila Mohd Yaman ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquid ◽  
Magnetic Nanoparticles ◽  
Rhodamine B ◽  
Schematic Diagram ◽  
Effective Removal ◽  
Dicationic Ionic Liquid ◽  
Modified Magnetic Nanoparticles

Schematic diagram of the removal procedure of RB on MNP-PANI-DICAT.

Preparation of Bead-on-String Nanofibers and its Application for the Removal of Bisphenol A

2015 ◽  
Vol 814 ◽  
pp. 125-131
Author(s):  
Fang Qiu ◽  
Min Le Peng ◽  
Zhi Mei Wei ◽  
Gang Zhang ◽  
Sheng Ru Long ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Bisphenol A ◽  
Kinetic Data ◽  
Processing Parameters ◽  
Order Kinetic ◽  
Average Width ◽  
First Order ◽  
Pseudo Second Order ◽  
Pseudo First Order ◽  
Adsorption Desorption

Bead-on-string nanofibers were prepared by electrospinning, in this work, . The effect of processing parameters and property of solutions on the morphology of bead-on-string nanofibers were systematically investigated. The results revealed that the morphology of beads on nanofibers transformed from spherical into spindle-like with increased concentration of solution, applied voltage and needle-collector distance. Average width of beads became smaller as increasing all the values of processing parameters. Meanwhile, the application for the removal of bisphenol A (BPA) from aqueous solution was investigated, and results showed that the bead-on-string nanofibers could effectively remove BPA from aqueous solution. The kinetic data were analyzed by the pseudo-first-order, pseudo-second-order kinetic models. The reusability of the composite nanofiber was also determined after five adsorption–desorption cycles.

scholarly journals Heavy Metal Adsorption Using Magnetic Nanoparticles for Water Purification: A Critical Review

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7500
Author(s):  
Christos Liosis ◽  
Athina Papadopoulou ◽  
Evangelos Karvelas ◽  
Theodoros E. Karakasidis ◽  
Ioannis E. Sarris
Keyword(s):  
Heavy Metal ◽  
Magnetic Nanoparticles ◽  
Adsorption Capacity ◽  
Water Purification ◽  
Metal Ion ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Desorption Process ◽  
Potential Applications ◽  
Modified Magnetic Nanoparticles

Research on contamination of groundwater and drinking water is of major importance. Due to the rapid and significant progress in the last decade in nanotechnology and its potential applications to water purification, such as adsorption of heavy metal ion from contaminated water, a wide number of articles have been published. An evaluating frame of the main findings of recent research on heavy metal removal using magnetic nanoparticles, with emphasis on water quality and method applicability, is presented. A large number of articles have been studied with a focus on the synthesis and characterization procedures for bare and modified magnetic nanoparticles as well as on their adsorption capacity and the corresponding desorption process of the methods are presented. The present review analysis shows that the experimental procedures demonstrate high adsorption capacity for pollutants from aquatic solutions. Moreover, reuse of the employed nanoparticles up to five times leads to an efficiency up to 90%. We must mention also that in some rare occasions, nanoparticles have been reused up to 22 times.

Contributions of Phosphate to DNA Adsorption/Desorption Behaviors on Aminosilane-Modified Magnetic Nanoparticles

Langmuir ◽  
2009 ◽  
Vol 25 (5) ◽  
pp. 2956-2961 ◽  
Author(s):  
Tsuyoshi Tanaka ◽  
Ririko Sakai ◽  
Ryosuke Kobayashi ◽  
Keiichi Hatakeyama ◽  
Tadashi Matsunaga
Keyword(s):  
Magnetic Nanoparticles ◽  
Dna Adsorption ◽  
Modified Magnetic Nanoparticles ◽  
Adsorption Desorption

Hemoglobin (Hb) immobilized on amino-modified magnetic nanoparticles for the catalytic removal of bisphenol A

Chemosphere ◽  
2011 ◽  
Vol 83 (3) ◽  
pp. 255-264 ◽  
Author(s):  
Tiantian Tang ◽  
Hai Fan ◽  
Shiyun Ai ◽  
Ruixia Han ◽  
Yanyan Qiu
Keyword(s):  
Magnetic Nanoparticles ◽  
Bisphenol A ◽  
Modified Magnetic Nanoparticles ◽  
Catalytic Removal
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