Abstract:
:Lignin is a renewable source of aromatics, and the conversion of lignin to chemicals, fuels and materials is very attractive. Herein, a novel lignin-based cation exchange resin (LBR) was easily synthesized through an economical one-pot method. Results demonstrated that the sulfonic acid groups were successfully introduced into the skeleton of the resins, and the S contents and swelling capacity of the prepared LBRs gradually increased with the increment of the sulfonation reagents dosage. A maximum ion-exchange capacity of 2.26 mmol/g was achieved for the LBR obtained at 120 °C for 4 h with a molar ratio of phenol to formaldehyde (P:F) of 1:5 (SSPL-0.50), which was comparable to the commercial phenol type cation exchange resin. Furthermore, the SSPL-0.50 exhibited a high adsorption capacity (167.2 mg/g) for Pb (II) removal. The LBR can be considered as a promising substitute for the petroleum-based ion exchange resin in the purification of wastewater.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Chen X,Sun S,Wang X,Wen J,Wang Y,Cao X,Yuan T,Wang S,Shi Q,Sun Rdoi
10.1016/j.biortech.2019.122297subject
Has Abstractpub_date
2020-01-01 00:00:00pages
122297eissn
0960-8524issn
1873-2976pii
S0960-8524(19)31527-5journal_volume
295pub_type
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