Lignin-based hyper-cross-linked resin as an adsorbent for aniline from aqueous solution

Gui Chen; Dexuan Xiang; Zheng Luo; Lu Feng; Jixia Li; Yiting Lin; Zhenghong Luo; Manying Li; Xiaoru Xie; Bailin Xiang

doi:10.1016/j.ijbiomac.2024.138892

Lignin-based hyper-cross-linked resin as an adsorbent for aniline from aqueous solution

Int J Biol Macromol. 2024 Dec 17:289:138892. doi: 10.1016/j.ijbiomac.2024.138892. Online ahead of print.

Authors

Gui Chen¹, Dexuan Xiang², Zheng Luo³, Lu Feng³, Jixia Li³, Yiting Lin³, Zhenghong Luo³, Manying Li³, Xiaoru Xie³, Bailin Xiang⁴

Affiliations

¹ College of Chemistry and Materials, Huaihua University, Huaihua 418000, PR China; Key Laboratory of Preparation and Application of Environmentally Friendly Functional Materials, Huaihua University, Huaihua 418000, PR China.
² College of Chemistry and Materials, Huaihua University, Huaihua 418000, PR China; Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Materia, Huaihua University, Huaihua 418000, PR China. Electronic address: [email protected].
³ College of Chemistry and Materials, Huaihua University, Huaihua 418000, PR China.
⁴ College of Chemistry and Materials, Huaihua University, Huaihua 418000, PR China; Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Materia, Huaihua University, Huaihua 418000, PR China. Electronic address: [email protected].

PMID: 39701246
DOI: 10.1016/j.ijbiomac.2024.138892

Abstract

Lignin serves as an ideal substrate for the synthesis of chemically functionalized hyper-cross-linked resins due to the structural composition of its aromatic rings, aliphatic side chains, and multiple active functional groups. These resins have shown to be highly effective in the adsorption of aromatic compounds. In this study, hyper-cross-linked polymer (HCPs-3), synthesized using 1,3,5-triphenyl and lignin, demonstrated a significant adsorption capacity for aniline, with a maximum adsorption capacity (q_max) of 189.2 mg/g at 303 K. This adsorption capacity reached equilibrium within 80 min, supporting the suitability of the pseudo-first-order rate model for kinetics analysis. The process benefited significantly from the high surface area and presence of abundant micro/mesopores. Acid-base interactions and hydrogen bonding were found to be crucial in enhancing the adsorption efficiency.

Keywords: Aniline adsorption; Hyper-cross-linked resin; Lignin-based.