Fabrication of a versatile lignin-based nano-trap for heavy metal ion capture and bacterial inhibition

Xiao, Duo; Ding, Wei; Zhang, Jiubing; Ge, Yuanyuan; Wu, Zijun; Li, Zhili

doi:10.1016/j.cej.2018.10.037

Cited by 108 publications

(36 citation statements)

References 68 publications

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“…Nowadays, the development of NPs from lignin has gained interest, given its nature, for drug delivery systems [9][10][11], delivery of hydrophobic molecules [12], improvement of UV barrier [13,14], as reinforcing agent in nanocomposites [15], sorbents for heavy metal ions and other environmental pollutants, and antibacterial and antioxidant applications [16][17][18][19]. They have also been used as an alternative to inorganic NPs due to some safety issues raised in recent years [8].…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of lignin nano- and micro-particles: Physicochemical characterization, bioactive properties and cytotoxicity assessment

Freitas

Cerqueira

Gonçalves

et al. 2020

International Journal of Biological Macromolecules

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Lignin particles (LPs) have gained prominence due to their biodegradability and bioactive properties. LP production at nano and micro scale produced from organosolv lignin and the understanding of size's effect on their properties is unexplored. This work aimed to produce and characterize lignin nanoparticles and microparticles using a green synthesis process, based on ethanol-solubilized lignin and water. Spherical shape LPs, with a mean size of 75 nm and 215 nm and with a low polydispersity were produced, as confirmed by transmission electron microscopy and dynamic light scattering. LPs thermal stability improved over raw lignin, and the chemical structure of lignin was not affected by the production method. The antimicrobial tests proved that LPs presented a bacteriostatic effect on Escherichiacoli and Salmonella enterica. Regarding the antioxidant potential, LPs had a good antioxidant activity that increased with the reaction time and LPs concentration. LPs also presented an antioxidant effect against intracellular ROS, reducing the intracellular ROS levels significantly. Furthermore, the LPs showed a low cytotoxic effect in Caco-2 cell line. These results showed that LPs at different scales (nano and micro) present biological properties and are safe to be used in different high value industrial sectors, such as biomedical, pharmaceutical and food.

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Section: Introductionmentioning

confidence: 99%

Green synthesis of lignin nano- and micro-particles: Physicochemical characterization, bioactive properties and cytotoxicity assessment

Freitas

Cerqueira

Gonçalves

et al. 2020

International Journal of Biological Macromolecules

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“…A new peak of 168.7 eV emerged in AL-PEI-CS 2 -Cu(II) complexes, which was attributed to S-Cu. These results demonstrated that S atom of the -CSS-group in AL-PEI-CS 2 accounted for binding with Cu(II) [53]. The binding energies of N 1s for -N-CS 2 (403.9 eV) and -NH/-NH 2 groups (399.5 eV) carried by AL-PEI-CS 2 were observed to be shifted to 400.9 eV and 399.2 eV in AL-PEI-CS 2 -Cu(II) complexes (Fig.…”

Section: Adsorption Mechanismmentioning

confidence: 74%

Performance of a modified alkaline lignin towards copper adsorption under different conditions

Zheng

Wang

Dai³

et al. 2021

Environmental Engineering Research

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Polyethyleneimine and carbon disulfide were employed to modify alkaline lignin (AL) in order to introduce -NH, -NH2 and -CSS- groups. Its adsorption performance towards Cu(II) was evaluated based on the residual concentration (Cr) against the discharge permissible concentration for Cu(II) (2.0 mg/L) established by the World Health Organization. The evaluation was operated under different conditions such as adjusting the solution pH, Cu(II) coexisting with K(I), Na(I), Ca(II) or Mg(II), changing the contact time (t) and initial concentration of Cu(II) (C0), as well as regeneration. When t and C0 equaled to 180 min and 50 mg/L, Cr was less than 2.0 mg/L at pH of 5.03 to 5.65. Under the situation of Cu (II) coexisting with 50 mg/L of K(I), Na(I), Ca(II) or Mg(II), Cr was as low as 1.96, 1.53, 1.97 or 1.55 mg/L (t = 180 min, C0 = 50 mg/L), respectively. Even the modified AL was regenerated and reused four times, Cr was closed to 2 mg/L for each time (t = 180 min, C0 = 51 mg/L). By comparing with other lignin-based materials according to the adsorption equilibrium time, the maximum adsorption capacity, and Cr, the modified AL exhibited higher application potential in copper-loaded water treatment.

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“…The combination of physical and chemical adsorption seemed to be of major interests due to the combined effects of the large surface area and functional complexation interaction in relationship with both operational modes. A lignin-based nano-trap (LBNT) through functionalizing one of the most abundant biomass on Earth, lignin, had been synthesized and used in the adsorption of Hg(II) among other heavy metals (Ag(I), Cd(II), Cu(II), Zn(II), and Pb(II)) [112]. LBNT presented a removal efficiency greater than 99%.…”

Section: 6-diaminopyridine (Pd) and Polyamine Compoundsmentioning

confidence: 99%

Adsorption Processing for the Removal of Toxic Hg(II) from Liquid Effluents: Advances in the 2019 Year

López

2020

Metals

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Mercury is a toxic metal, thus, it is an element which has more and more restrictions in its uses, but despite the above, the removal of this metal, from whatever the form in which it is encountered (zero valent metal, inorganic, or organic compounds), and from different sources, is of a widespread interest. In the case of Hg(II), or Hg2+, the investigations about the treatment of Hg(II)-bearing liquid effluents (real or in most cases synthetic solutions) appear not to end, and from the various separation technologies, adsorption is the most popular among researchers. In this topic, and in the 2019 year, more than 100 publications had been devoted to this field: Hg(II)-removal-adsorption. This work examined all of them.

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Fabrication of a versatile lignin-based nano-trap for heavy metal ion capture and bacterial inhibition

Cited by 108 publications

References 68 publications

Green synthesis of lignin nano- and micro-particles: Physicochemical characterization, bioactive properties and cytotoxicity assessment

Green synthesis of lignin nano- and micro-particles: Physicochemical characterization, bioactive properties and cytotoxicity assessment

Performance of a modified alkaline lignin towards copper adsorption under different conditions

Adsorption Processing for the Removal of Toxic Hg(II) from Liquid Effluents: Advances in the 2019 Year

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