Location: Bio-oils ResearchTitle: Lignin-based biosorbent for application in selective removal of Pb(II)
|Liu, Zengshe - Kevin|
|JIN, CAN - Chinese Academy Of Forestry|
Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 3/30/2022
Publication Date: N/A
Technical Abstract: A novel 1-Aza-18-crown-6 functionalized lignin-based adsorbent (AFL) has been prepared through the Mannich reaction in a one-step process. Characterizations of the AFL were carried out by Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, elemental analysis, and X-ray photoelectron spectroscopy. The AFL was observed to display enhanced adsorption capacity (Qmax = 91.4 mg/g) and superior selectivity toward Pb(II) ions, due to a display of crown ether units and their interaction with metal ions. This AFL could be regenerated by desorption of Pb(II) ions and remained at over 80% adsorption efficiency after four adsorption-desorption cycles. Therefore, the AFL displayed acceptable adsorption performance and would serve as a bioresource-based and recyclable adsorbent material, portending a new expectation in the application for water purification engineering.