Magnetic multi-porous bio-adsorbent modified with amino siloxane for fast removal of Pb(II) from aqueous solution

Zhou, Jianjun; Liu, Yaochi; Zhou, Xiaohui; Ren, Jia-Lin; Zhong, Chubin

doi:10.1016/j.apsusc.2017.08.110

Cited by 54 publications

(14 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In general, the composites prepared with the resin Dowex 50 WX4 were the most efficient in the removal of Ni(II), Cu(II), Cd(II) and Pb(II), showing an adsorption capacity of 384, 416, 398 and 380 mg/g, respectively [45]. These values are higher than the data registered for other composites obtained from carbon nanotubes [34], α-cellulose [40], chitosan [41][42][43], silica [53], starch [54] and different types of biomass such as waste orange peel, pine bark and Cyclosorus interruptus (see Table 3) [33,50,55]. Additionally, it is relevant to mention that for the removal of Cr(VI), the composite obtained with poly(vinylidene fluoride) shows the higher adsorption capacity (1423.4 mg/g) in comparison with the samples prepared from chitosan (46 mg/g), cotton (3.74 mg/g) and Dowex 50 WX4 resin (400 mg/g) [41,44,45].…”

Section: Magnetic Adsorbentsmentioning

confidence: 86%

“…The term "magnetic adsorbent" is commonly used to describe the materials derived from iron (particles of γ-Fe 2 O 3 , Fe 3 O 4 and CoFe 2 O 3 ) or composites prepared from different types of matrix modified with iron compounds, which are used in the adsorption of water contaminants [33]. Particularly, for the adsorption of heavy metals from water, the principal magnetic adsorbents used are the composites, which are prepared with different methodologies using iron compounds and a specific matrix such as activated carbon, biochar, carbon nanotubes, α-cellulose, chitosan, cotton, resins, silica, starch, polymers, different type of biomass, and so on (see Table 3) .…”

Section: Magnetic Adsorbentsmentioning

confidence: 99%

See 1 more Smart Citation

Removal of Heavy Metals Using Adsorption Processes Subject to an External Magnetic Field

Virgen¹,

Vázquez²,

Montoya³

et al. 2018

Heavy Metals

View full text Add to dashboard Cite

Adsorption is a broadly used process for the removal of heavy metals and the world trend is directed to the application of new technologies to intensify existing processes. The properties of the magnetic field (intensity and arrangement) and the intrinsic magnetic properties of the adsorbent and the adsorbate are decisive for satisfactory results. The intensity of the magnetic field is important, because this implies that the greater number of spins present will align with the magnetic field according to the magnetic nature present, allowing the mobility of the adsorbate and generating heterogeneity on the surface of the adsorbent. Similarly, the arrangement of the magnetic field will determine the direction of the magnetic field lines. The application of a magnetic field as an alternative for the intensification of the adsorption process based on the consideration that the magnetic field is safe, environmentally friendly and economic.

show abstract

Section: Magnetic Adsorbentsmentioning

confidence: 86%

Section: Magnetic Adsorbentsmentioning

confidence: 99%

Removal of Heavy Metals Using Adsorption Processes Subject to an External Magnetic Field

Virgen¹,

Vázquez²,

Montoya³

et al. 2018

Heavy Metals

View full text Add to dashboard Cite

show abstract

“…To date, magnetic adsorbents for the removal of heavy metals have been developed as a composite of iron oxide and other compounds (i.e., biochar, chitosan, cellulose, graphene oxide, and titanate) [9,10,[22][23][24]. Among them, only a few materials, such as magnetic ion-imprinted polymer and magnetic biomaterial coated with amino siloxane, have been reported as selective adsorbents for lead [25,26].…”

Section: Introductionmentioning

confidence: 99%

Removal of Lead from Water Solution by Reusable Magnetic Adsorbent Incorporating Selective Lead-Binding Peptide

Yoo

2020

Applied Sciences

View full text Add to dashboard Cite

As a reusable adsorbent to remove lead from water, a peptide-based magnetic adsorbent incorporating lead-binding peptide was constructed. First, a 7-mer lead-binding peptide (TNTLSNN) was covalently bonded onto the surface of a magnetic bead. Compared to the adsorption capacity of a bare magnetic bead (4.0 mg lead/g bead), the peptide-linked bead exhibited a capacity more than eight times higher than that of a bare bead (34.1 mg lead/g bead). The regenerated peptide bead, by desorbing the lead from the bead with EDTA, could be repeatedly used (tested over six cycles) for the following round of lead adsorption without any significant loss of adsorption capacity. The selective removal of lead in the presence of other interfering metals was demonstrated with the individual or the combinatory use of four metal ions, namely Pb(II), Ni(II), Co(II), and Cu(II), where the amount of adsorbed Pb(II) was remarkably higher than those of the other metal ions. The adsorption isotherm followed the Langmuir model well, with the maximum adsorption loading (qmax) of 70.4 mg lead/g bead.

show abstract

“…Many technologies, such as membrane filtration, electrolysis, ion‐exchange, adsorption and precipitation, have been studied for the treatment of heavy metals in effluents. Specially, adsorption is considered to be one of the most effective methods for removal of contaminants . For the adsorption method, the focus of the research is to obtain adsorptive materials with excellent properties and easy preparation process.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Pb (II) adsorption in aqueous of 2D/2D g‐C₃N₄/MnO₂ composite

Guo

Chen

Zhou

et al. 2019

Applied Organom Chemis

Self Cite

View full text Add to dashboard Cite

A novel g‐C3N4/MnO2 composite was prepared by in situ deposition of MnO2 on graphitic carbon nitride (g‐C3N4) nanosheets, and its adsorption properties were evaluated for removal of Pb (II) in aqueous. Fourier transform‐infrared, spectrometer scanning electron microscopy and transmission electron microscopy characterization showed the g‐C3N4/MnO2 composite had a two‐dimensional/two‐dimensional (2D/2D) structure with ample active sites. The Brunauer–Emmett–Teller specific surface area of g‐C3N4/MnO2 composites (234.9 m2/g) was 13.5 times larger than that of g‐C3N4 (17.37 m2/g), providing better conditions for adsorption. The adsorption kinetic data were better fitted with the pseudo‐second‐order model. The Langmuir model was more suitable for describing the experimental equilibrium data of g‐C3N4/MnO2, and the maximum adsorption capacity was 204.1 mg/g for Pb (II). The adsorption of g‐C3N4/MnO2 composite for Pb (II) was an endothermic and spontaneous process, and reached adsorption equilibrium rapidly within initial 150 min. This composite was an excellent adsorbent because of its higher adsorption capacity and facile preparation progress.

show abstract

Magnetic multi-porous bio-adsorbent modified with amino siloxane for fast removal of Pb(II) from aqueous solution

Cited by 54 publications

References 41 publications

Removal of Heavy Metals Using Adsorption Processes Subject to an External Magnetic Field

Removal of Heavy Metals Using Adsorption Processes Subject to an External Magnetic Field

Removal of Lead from Water Solution by Reusable Magnetic Adsorbent Incorporating Selective Lead-Binding Peptide

Preparation and Pb (II) adsorption in aqueous of 2D/2D g‐C₃N₄/MnO₂ composite

Contact Info

Product

Resources

About

Magnetic multi-porous bio-adsorbent modified with amino siloxane for fast removal of Pb(II) from aqueous solution

Cited by 54 publications

References 41 publications

Removal of Heavy Metals Using Adsorption Processes Subject to an External Magnetic Field

Removal of Heavy Metals Using Adsorption Processes Subject to an External Magnetic Field

Removal of Lead from Water Solution by Reusable Magnetic Adsorbent Incorporating Selective Lead-Binding Peptide

Preparation and Pb (II) adsorption in aqueous of 2D/2D g‐C3N4/MnO2 composite

Contact Info

Product

Resources

About

Preparation and Pb (II) adsorption in aqueous of 2D/2D g‐C₃N₄/MnO₂ composite