Bi-functionalized lignin with amino and sulfonic groups (ASL) was synthesized via Mannich
reaction and sulfomethylation. It was systematically characterized by FT-IR, element …

The pollution of heavy metal ions in wastewater has caused a certain degree of threat to the
environment and the human body, so the removal of heavy metals in wastewater has …

The removal of heavy metals ions from wastewater by an economic, high-effective, and
environmentally friendly method is particularly important. In this study, an effective lignin …

N-Acetyl-l-cysteine-functionalized lignin (CFL) was synthesized via UV-initiated thiol–ene
click reaction. The structure and morphology of CFL were characterized by FT-IR, 1H NMR …

In this work, silanized and aminated lignin (SAL) was synthesized in one step and its
adsorption of Congo red and Cu (II) ions in aqueous solution was explored. Lignin was …

Novel biosorbents, graft copolymers, were prepared via Mannich reaction from enzymatic
hydrolysis lignin with glycine and cystine, respectively. The element content, FT-IR and …

Functionalized lignin-based biosorbent has become popular in wastewater treatment and
extraction of valuable metals. Amination and metallization modification can effectively …

Water is essential for the development of life on earth; therefore, its decontamination is
essential. Among the pollutants that threaten this water resources are metal ions, since they …

Water pollution by heavy metal ions is currently of great concern due to their high toxicity
and carcinogenicity. In recent years, great efforts have been devoted to the search for new …

Lignin is a widely used adsorbent for removing heavy metal ions from water. Lignin can be
extracted from black liquor and its inert surface properties limit its adsorption performance. In …